Join devRant
Do all the things like
++ or -- rants, post your own rants, comment on others' rants and build your customized dev avatar
Sign Up
Pipeless API
From the creators of devRant, Pipeless lets you power real-time personalized recommendations and activity feeds using a simple API
Learn More
-
When the senior Linux engineer puts a terminal game on a server everyone uses which launched at login and after a little you start hearing oh's, wtf's, laughing and everything and then you suddenly have a whole room of Linux engineers playing some kinda terminal space invaders game while doing customer support.
😆14 -
https://git.kernel.org/…/ke…/... sure some of you are working on the patches already, if you are then lets connect cause, I am an ardent researcher for the same as of now.
So here it goes:
As soon as kernel page table isolation(KPTI) bug will be out of embargo, Whatsapp and FB will be flooded with over-night kernel "shikhuritee" experts who will share shitty advices non-stop.
1. The bug under embargo is a side channel attack, which exploits the fact that Intel chips come with speculative execution without proper isolation between user pages and kernel pages. Therefore, with careful scheduling and timing attack will reveal some information from kernel pages, while the code is running in user mode.
In easy terms, if you have a VPS, another person with VPS on same physical server may read memory being used by your VPS, which will result in unwanted data leakage. To make the matter worse, a malicious JS from innocent looking webpage might be (might be, because JS does not provide language constructs for such fine grained control; atleast none that I know as of now) able to read kernel pages, and pawn you real hard, real bad.
2. The bug comes from too much reliance on Tomasulo's algorithm for out-of-order instruction scheduling. It is not yet clear whether the bug can be fixed with a microcode update (and if not, Intel has to fix this in silicon itself). As far as I can dig, there is nothing that hints that this bug is fixable in microcode, which makes the matter much worse. Also according to my understanding a microcode update will be too trivial to fix this kind of a hardware bug.
3. A software-only remedy is possible, and that is being implemented by all major OSs (including our lovely Linux) in kernel space. The patch forces Translation Lookaside Buffer to flush if a context switch happens during a syscall (this is what I understand as of now). The benchmarks are suggesting that slowdown will be somewhere between 5%(best case)-30%(worst case).
4. Regarding point 3, syscalls don't matter much. Only thing that matters is how many times syscalls are called. For example, if you are using read() or write() on 8MB buffers, you won't have too much slowdown; but if you are calling same syscalls once per byte, a heavy performance penalty is guaranteed. All processes are which are I/O heavy are going to suffer (hostings and databases are two common examples).
5. The patch can be disabled in Linux by passing argument to kernel during boot; however it is not advised for pretty much obvious reasons.
6. For gamers: this is not going to affect games (because those are not I/O heavy)
Meltdown: "Meltdown" targeted on desktop chips can read kernel memory from L1D cache, Intel is only affected with this variant. Works on only Intel.
Spectre: Spectre is a hardware vulnerability with implementations of branch prediction that affects modern microprocessors with speculative execution, by allowing malicious processes access to the contents of other programs mapped memory. Works on all chips including Intel/ARM/AMD.
For updates refer the kernel tree: https://git.kernel.org/…/ke…/...
For further details and more chit-chats refer: https://lwn.net/SubscriberLink/...
~Cheers~
(Originally written by Adhokshaj Mishra, edited by me. )
23 -
Holy fucking hell!
Who the fuck sets up a local network with an 255.255.0.0 subnet mask and then lets the dhcp-server distribute clients onto the 192.249.x.x., 192.2.x.x and the 192.22.x.x networks AT FUCKING RANDOM???
I need to SSH onto 40 routers distributed across the entire campus and have a WORKING internet connection while doing so and you make me spin the connect-disconnect-wheel. Fucking hell dude, don't give me that "Uh, it wasn't intended for this size"-bullshit. You have about 200 active devices. And in one subnet you have space for more than 60 000. Fuck you, dumbass! OH, YOUR FUCKING LIST IS FUCKING WRONG AND YOU DON'T REMEMBER THE IP OF THE ROUTERS? OH FUCK YOU EVEN HARDER!!!
Goddamn people why does legacy maintenance always suck so much?😭😭😭4 -
Friend: You make games right?
Me: Yea I try to atleast, why?
Friend: I have this cool idea for an MMORPG with fantasy elements and dragons and stuff!
Me: Well thats a lot of work, just setting up serv-
Friend: We can have a bunch of cool stuff like Sandbox stuff, Guild battles and 100v100 pvp
Me: As I was trying to say, it would requi-
Friend: OH We need space for atleast 10 thousand people on each server!
Me: ... Good luck buddy!6 -
One comment from @Fast-Nop made me remember something I had promised myself not to. Specifically the USB thing.
So there I was, Lieutenant Jr at a warship (not the one my previous rants refer to), my main duties as navigation officer, and secondary (and unofficial) tech support and all-around "computer guy".
Those of you who don't know what horrors this demonic brand pertains to, I envy you. But I digress. In the ship, we had Ethernet cabling and switches, but no DHCP, no server, not a thing. My proposition was shot down by the CO within 2 minutes. Yet, we had a curious "network". As my fellow... colleagues had invented, we had something akin to token ring, but instead of tokens, we had low-rank personnel running around with USB sticks, and as for "rings", well, anyone could snatch up a USB-carrier and load his data and instructions to the "token". What on earth could go wrong with that system?
What indeed.
We got 1 USB infected with a malware from a nearby ship - I still don't know how. Said malware did the following observable actions(yes, I did some malware analysis - As I said before, I am not paid enough):
- Move the contents on any writeable media to a folder with empty (or space) name on that medium. Windows didn't show that folder, so it became "invisible" - linux/mac showed it just fine
- It created a shortcut on the root folder of said medium, right to the malware. Executing the shortcut executed the malware and opened a new window with the "hidden" folder.
Childishly simple, right? If only you knew. If only you knew the horrors, the loss of faith in humanity (which is really bad when you have access to munitions, explosives and heavy weaponry).
People executed the malware ON PURPOSE. Some actually DISABLED their AV to "access their files". I ran amok for an entire WEEK to try to keep this contained. But... I underestimated the USB-token-ring-whatever protocol's speed and the strength of a user's stupidity. PCs that I cleaned got infected AGAIN within HOURS.
I had to address the CO to order total shutdown, USB and PC turnover to me. I spent the most fun weekend cleaning 20-30 PCs and 9 USBs. What fun!
What fun, morons. Now I'll have nightmares of those days again.9 -
As a full time remote employee it gets lonely. Im getting ready to turn my home into a co-working space :
* Plenty of space with tables and couches
* Gigabit Internet backed by enterprise networking gear
* Lots of fresh ground coffee
* Local Kubernetes server !
* dog friendly chill space
* kid friendly play areas during the summer
* Mountain home with backyard hiking trails , wildlife lookout (wild deer live in my back yard), and fireplaces
What else would you want in your co-work space-at-my-place (TM)?12 -
Ok story of my most most recent job search (not sure devRant could handle the load if I was to go through them all)
First a little backstory on why I needed to search for a new job:
Joined a small startup in the blockchain space. They were funded through grants from a non-profit setup by the folks who invented the blockchain and raised funds (they gave those funds out to companies willing to build the various pieces of the network and tools).
We were one of a handful of companies working on the early stages of the network. We built numerous "first"s on the network and spent the majority of our time finding bugs and issues and asking others to fix them so it would become possible, for us to do what we signed up for. We ended up having to build multiple server side applications as middleware to plug massive gaps. All going great, had a lot of success, were told face to face by the foundation not to worry about securing more funds at least for the near term as we were "critical to the success of the network".
1 month later a bug was discovered in our major product, was nasty and we had to take it offline. Nobody lost any funds.
1-2 months later again, the inventor of the blockchain (His majesty, Lord dickhead of cuntinstein) decided to join the foundation as he wasn't happy with the orgs progress and where the network now stood. Immediately says "see that small startup over there ... yeah I hate them. Blackball them from getting anymore money. Use them as an example to others that we are not afraid to cut funds if you fuck up"
Our CEO was informed. He asked for meetings with numerous people, including His royal highness, lord cockbag of never-wrong. The others told our CEO that they didn't agree with the decision, but their hands were tied and they were deeply sorry. Our CEO's pleas with The ghost of Christmas cuntyness, just fell on deaf ears.
CEO broke the news to us, he had 3 weeks of funds left to pay salaries. He'd pay us to keep things going and do whatever we could to reduce server costs, so we could leave everything up long enough for our users to migrate elsewhere. We reduced costs a lot by turning off non essential features, he gave us our last pay check and some great referrals. That was that and we very emotionally closed up shop.
When news got out, we then had to defend ourselves publicly, because the loch ness moron, decided to twist things in his favour. So yeah, AMAZING experience!
So an unemployed and broken man, I did the unthinkable ... I set my linkedin to "open to work". Fuck me every moronic recruiter in a 10,000 mile radius came after me. Didn't matter if I was qualified, didn't matter if I had no experience in that language or type of system, didn't matter if my bio explicitly said "I don't work with X, Y or Z" ... that only made them want me more.
I think I got somewhere around 20 - 30 messages per week, 1 - 2 being actually relevant to what I do. Applied to dozens of jobs myself, only contacted back by 1, who badly fucked up the job description and I wasn't a fit at all.
Got an email from company ABC, who worked on the same blockchain we got kicked off of. They were looking for people with my skills and the skills of one other dev in the preious company. They heard what happened and our CEO gave us a glowing recommendation. They largely offered us the job, but both of us said that we weren't interested in working anywhere near, that kick needing prick, again. We wanted to go elsewhere.
Went back to searching, finding nothing. The other dev got a contract job elsewhere. The guy from ABC message me again to say look, we understand your issues, you got fucked around. We can do out best to promise you'll never have to speak to, the abominable jizz stain, again. We'll also offer you a much bigger role, and a decent salary bump on top of that.
Told them i'd think about it. We ended up having a few more calls where they showed me designs of all the things they wanted to do, and plans on how they would raise money if the same thing was to ever happen to them. Eventually I gave in and signed up.
So far it was absolutely the right call. Haven't had to speak to the scrotum at all. The company is run entirely by engineers. Theres no 14 meetings per week to discuss "where we are" which just involves reading our planning tool tickets, out loud. I'm currently being left alone 99% of the week to get work done. and i'm largely in-charge of everything mobile. It was a fucking hellhole of a trip, but I came out the other side better off
I'm sure there is a thought provoking, meaningful quote I could be writing now about how "things always work out" or that crap. But remembering it all just leaves me with the desire to find him and shove a cactus where the sun don't shine
.... happy job hunting everyone!10 -
!Story
The day I became the 400 pound Chinese hacker 4chan.
I built this front-end solution for a client (but behind a back end login), and we get on the line with some fancy European team who will handle penetration testing for the client as we are nearing dev completion.
They seem... pretty confident in themselves, and pretty disrespectful to the LAMP environment, and make the client worry even though it's behind a login the project is still vulnerable. No idea why the client hired an uppity .NET house to test a LAMP app. I don't even bother asking these questions anymore...
And worse, they insist we allow them to scrape for vulnerabilities BEHIND the server side login. As though a user was already compromised.
So, I know I want to fuck with them. and I sit around and smoke some weed and just let this issue marinate around in my crazy ass brain for a bit. Trying to think of a way I can obfuscate all this localStorage and what it's doing... And then, inspiration strikes.
I know this library for compressing JSON. I only use it when localStorage space gets tight, and this project was only storing a few k to localStorage... so compression was unnecessary, but what the hell. Problem: it would be obvious from exposed source that it was being called.
After a little more thought, I decide to override the addslashes and stripslashes functions and to do the compression/decompression from within those overrides.
I then minify the whole thing and stash it in the minified jquery file.
So, what LOOKS from exposed client side code to be a simple addslashes ends up compressing the JSON before putting it in localStorage. And what LOOKS like a stripslashes decompresses.
Now, the compression does some bit math that frankly is over my head, but the practical result is if you output the data compressed, it looks like mandarin and random characters. As a result, everything that can be seen in dev tools looks like the image.
So we GIVE the penetration team login credentials... they log in and start trying to crack it.
I sit and wait. Grinning as fuck.
Not even an hour goes by and they call an emergency meeting. I can barely contain laughter.
We get my PM and me and then several guys from their team on the line. They share screen and show the dev tools.
"We think you may have been compromised by a Chinese hacker!"
I mute and then die my ass off. Holy shit this is maybe the best thing I've ever done.
My PM, who has seen me use the JSON compression technique before and knows exactly whats up starts telling them about it so they don't freak out. And finally I unmute and manage a, "Guys... I'm standing right here." between gasped laughter.
If only it was more common to use video in these calls because I WISH I could have seen their faces.
Anyway, they calmed their attitude down, we told them how to decompress the localStorage, and then they still didn't find jack shit because i'm a fucking badass and even after we gave them keys to the login and gave them keys to my secret localStorage it only led to AWS Cognito protected async calls.
Anyway, that's the story of how I became a "Chinese hacker" and made a room full of penetration testers look like morons with a (reasonably) simple JS trick.
9 -
We had issues with lack of disk space on our production SQL server. Another developer decided to delete the databases he thought weren't in use to clear some space.
Ever think about checking first?!
Production chaos!7 -
ONLY TODAY did I learn that the ".js" is optional in node when running a script.
I always ran "node server.js"
But by accident I ran "node server .js" with a space and it worked, I wondered why, and then ran
"node server" and it just fucking works. That's awesome.12 -
I hate Wordpress. I hate Wordpress. I hate Wordpress.
Wordpress can take a big shit on itself and crawl into a deep dark hole far away from all that is good.
Who even uses Wordpress? Bloggers? Come on, let’s be honest, they’re using more intuitive sites like weebly, wix, and square space. So WHAT is Wordpress for? I’ll tell you, it’s just to FUCKING TORTURE PEOPLE.
So, being the “techy guy” of the family, a relative contacts me asking for some help with their website because they need to install an SSL certificate but they don’t know how to. I tell them I’d gladly do it because, sure, they’re family and how long can it possibly take to install a certificate? I’ve done it before!
Well, I get to work and log into the sluggish Wordpress dashboard and try to use a plugin that would issue a LetsEncrypt certificate because they are free and just as good as any other SSL. But one plugin after the next I keep getting errors about how my hosting wouldn’t allow it.
So I contact GoDaddy (don’t get me fucking started) and ask them about the issue. The guy tells me it’s “policy” to only be able to use GoDaddy’s certificates. How much do they cost? Oh, how about $100 a year?! Fuck you.
I figured out the only way to escape this hell was to ask them to open an economy Linux hosting account with cPanel on GoDaddy (the site was formerly hosted on a “Managed Wordpress” account which is just bullshit for not wanting to give you any control over your own goddamn content). So now I have to deal with migrating the site.
GoDaddy representative tells me that it should only take 20 minutes for me to do this (I’ve already spent way too much time on this but whatever) so I go forward with the new account. I decide I should migrate the site by exporting a backup and manually placing everything on the new server. Doesn’t it end up taking an entire hour to back up a 200MB site because GoDaddy throttled the processing speed?!
So, it’s another hour later and I’ve installed all the databases and carried over all the files. At this point, I’m really at the end of my rope and can’t wait to install the certificate and be done with this fuckery.
I install the certificate and finally get ready to be on my way, but then I see it. A warning. A warning from my browser telling me the site is only partially secure. It turns out the certificate was properly installed but whoever initially made the site HARDCODED ALL THE LINKS to images, websites, and style sheets to be http instead of https.
I’m gonna explode.
I swear, I’m gonna fucking explode.
After a total of 5 hours of work, I finally get the site secure by using search and replace on every fucking file.
Wordpress can go suck a big one. Actually, Wordpress can go suck the largest fuckin one in existence and choke on it.
TL;DR I agree to install an SSL certificate but end up with much more work than I bargained.38 -
!WTF
Take a look at how big my SSD is(220GB).
Take a look at how much space I can remove with MS Disk Cleanup.
So there is a very very 👌 small risk that I will now erase the whole Windows Update File Server at Microsoft, lets see what's happens 🤞
16 -
Sometimes I think back to all the funny shit that happened and how simple stuff fucks everyone
- tired Database engineer deleting (not dropping, literally rm -rf) the database files on the wrong server
- Microsoft delivering viruses through updates
- Pissed and stubborn dev deleting his one line library repo which does something like removing a char left side of string fucking an unmeasurable amount of other projects
- Adobe getting hacked and exposed for storing passwords in plain texts
- a doubled line causing a bug called heartbleed in a fuckton of webservers
- a Tutorial Company getting kicked from github because their repo got so big github staff had to maintain the repo manually
- and an old one: bad code crashed a space shuttle16 -
Today - after a successful launch of my own GitLab-Server - I finished my other project!
It's a Resouce Panel for my Homeserver to check it's stats like:
- CPU usage
- RAM usage
- Network Traffic
- Disk Space
It works like a charm and only need php <3
If you guys want a download link, I'll send one in :)
51 -
Lead dev: Hey boss, you really do like Python right?
Me: No
Lead dev: Well it's cuz I was think....wait what? WTF do you mean no, you have automated a fuckload of BS with Python and we are still using it, why tf would you use Python if you don't like it?
Me: I like it enough for the automation scripts that we have and for parsing documents or generating glue scripts, its already installed in every server that we have, so testing bs in dev and then using them in prod is cake, it doesn't mean I LOVE python, I like it for what we use it.
Lead dev: Well ain't already bash and perl installed as well?
Me: Do you know bash and or perl?
Lead dev: No, don't you?....
Me: No......
L Dev: (using a Jim Carrey impersonation) WELLL ALLRIGTHY THEN! What is the other language that you used for X project?
Me: Clojure, do you remember that one?
* he said paren paren paren paren yes paren i space paren do close paren close paren etc etc
L Dev: (((((((yes (i (do)))))))) and nevermind, I'll get back to working more with Python
Me: das what I fucking thought esse6 -
Okay, story time.
Back during 2016, I decided to do a little experiment to test the viability of multithreading in a JavaScript server stack, and I'm not talking about the Node.js way of queuing I/O on background threads, or about WebWorkers that box and convert your arguments to JSON and back during a simple call across two JS contexts.
I'm talking about JavaScript code running concurrently on all cores. I'm talking about replacing the god-awful single-threaded event loop of ECMAScript – the biggest bottleneck in software history – with an honest-to-god, lock-free thread-pool scheduler that executes JS code in parallel, on all cores.
I'm talking about concurrent access to shared mutable state – a big, rightfully-hated mess when done badly – in JavaScript.
This rant is about the many mistakes I made at the time, specifically the biggest – but not the first – of which: publishing some preliminary results very early on.
Every time I showed my work to a JavaScript developer, I'd get negative feedback. Like, unjustified hatred and immediate denial, or outright rejection of the entire concept. Some were even adamantly trying to discourage me from this project.
So I posted a sarcastic question to the Software Engineering Stack Exchange, which was originally worded differently to reflect my frustration, but was later edited by mods to be more serious.
You can see the responses for yourself here: https://goo.gl/poHKpK
Most of the serious answers were along the lines of "multithreading is hard". The top voted response started with this statement: "1) Multithreading is extremely hard, and unfortunately the way you've presented this idea so far implies you're severely underestimating how hard it is."
While I'll admit that my presentation was initially lacking, I later made an entire page to explain the synchronisation mechanism in place, and you can read more about it here, if you're interested:
http://nexusjs.com/architecture/
But what really shocked me was that I had never understood the mindset that all the naysayers adopted until I read that response.
Because the bottom-line of that entire response is an argument: an argument against change.
The average JavaScript developer doesn't want a multithreaded server platform for JavaScript because it means a change of the status quo.
And this is exactly why I started this project. I wanted a highly performant JavaScript platform for servers that's more suitable for real-time applications like transcoding, video streaming, and machine learning.
Nexus does not and will not hold your hand. It will not repeat Node's mistakes and give you nice ways to shoot yourself in the foot later, like `process.on('uncaughtException', ...)` for a catch-all global error handling solution.
No, an uncaught exception will be dealt with like any other self-respecting language: by not ignoring the problem and pretending it doesn't exist. If you write bad code, your program will crash, and you can't rectify a bug in your code by ignoring its presence entirely and using duct tape to scrape something together.
Back on the topic of multithreading, though. Multithreading is known to be hard, that's true. But how do you deal with a difficult solution? You simplify it and break it down, not just disregard it completely; because multithreading has its great advantages, too.
Like, how about we talk performance?
How about distributed algorithms that don't waste 40% of their computing power on agent communication and pointless overhead (like the serialisation/deserialisation of messages across the execution boundary for every single call)?
How about vertical scaling without forking the entire address space (and thus multiplying your application's memory consumption by the number of cores you wish to use)?
How about utilising logical CPUs to the fullest extent, and allowing them to execute JavaScript? Something that isn't even possible with the current model implemented by Node?
Some will say that the performance gains aren't worth the risk. That the possibility of race conditions and deadlocks aren't worth it.
That's the point of cooperative multithreading. It is a way to smartly work around these issues.
If you use promises, they will execute in parallel, to the best of the scheduler's abilities, and if you chain them then they will run consecutively as planned according to their dependency graph.
If your code doesn't access global variables or shared closure variables, or your promises only deal with their provided inputs without side-effects, then no contention will *ever* occur.
If you only read and never modify globals, no contention will ever occur.
Are you seeing the same trend I'm seeing?
Good JavaScript programming practices miraculously coincide with the best practices of thread-safety.
When someone says we shouldn't use multithreading because it's hard, do you know what I like to say to that?
"To multithread, you need a pair."18 -
Every year my team runs an award ceremony during which people win “awards” for mistakes throughout the year. This years was quite good.
The integration partner award- one of our sysAdmins was talking with a partner from another company over Skype and was having some issues with azure. He intended to send me a small rant but instead sent “fucking azure can go fuck itself, won’t let me update to managed disks from a vhd built on unmanaged” to our jv partner.
Sysadmin wannabe award (mine)- ran “Sudo chmod -R 700 /“ on one of our dev systems then had to spend the next day trying to fix it 😓
The ain’t no sanity clause award - someone ran a massive update query on a prod database without a where clause
The dba wannabe award - one of our support guys was clearing out a prod dB server to make some disk space and accidentally deleted one of the databases devices bringing it down.
The open source community award - one of the devs had been messing about with an apache proxy on a prod web server and it ended up as part of a botnet
There were others but I can’t remember them all4 -
So, after weeks of reading spicy rants from all of you, I finally decided to join your community ; even if I'm only a student, I've encountered some solid crap in my internships.
Let's go back in time bois. Two years ago, I started my first intership at a Fortune 500 company (this doesn't exists in France, but whatever, this is nearly the same category). I was supposed to build some file sharing system for the office. Before getting into it, I briefly thought aboyt what technos I could use to build it and make a sweet interface for my co-workers, in 10 weeks, and not a single another day.
Expectations
> Nice team with devs that I could ask things about and learn solid tricks that would even amaze David Copperfield
> Having a nice dev environment
Reality
> Alone on this project
> No fucking dev environment, I had to build everything on Notepad
> No CI
> No SCM
> And, the worst, Ladies and Gentlemans,
I FUCKING HAD TO WORK IN A SINGLE FILE IN A CLOSED ENVIRONMENT.
NO WEBSERVER, NO DEDICATED SPACE.
I HAD TO REQUEST A SPECIFIC ENVIRONMENT IN A CLOSED CUSTOM CMS THAT WAS SERVING FILES, SO THIS FORMAT COULD BE READ ON FOLDER OPENING IN IE9 (FIREFOX FORBIDDEN).
YOU HAD TO MIX HTML, CSS AND JS IN A SINGLE FILE. NO SERVER-SIDE LANGUAGES, ONLY STATIC LINKS, NO FRAMEWORKS (if we can call jQuery, Bootstrap, Semantic UI and all these thinks "Frameworks").
> mfw at the end of the intership
13 -
I've found and fixed any kind of "bad bug" I can think of over my career from allowing negative financial transfers to weird platform specific behaviour, here are a few of the more interesting ones that come to mind...
#1 - Most expensive lesson learned
Almost 10 years ago (while learning to code) I wrote a loyalty card system that ended up going national. Fast forward 2 years and by some miracle the system still worked and had services running on 500+ POS servers in large retail stores uploading thousands of transactions each second - due to this increased traffic to stay ahead of any trouble we decided to add a loadbalancer to our backend.
This was simply a matter of re-assigning the IP and would cause 10-15 minutes of downtime (for the first time ever), we made the switch and everything seemed perfect. Too perfect...
After 10 minutes every phone in the office started going beserk - calls where coming in about store servers irreparably crashing all over the country taking all the tills offline and forcing them to close doors midday. It was bad and we couldn't conceive how it could possibly be us or our software to blame.
Turns out we made the local service write any web service errors to a log file upon failure for debugging purposes before retrying - a perfectly sensible thing to do if I hadn't forgotten to check the size of or clear the log file. In about 15 minutes of downtime each stores error log proceeded to grow and consume every available byte of HD space before crashing windows.
#2 - Hardest to find
This was a true "Nessie" bug.. We had a single codebase powering a few hundred sites. Every now and then at some point the web server would spontaneously die and vommit a bunch of sql statements and sensitive data back to the user causing huge concern but I could never remotely replicate the behaviour - until 4 years later it happened to one of our support staff and I could pull out their network & session info.
Turns out years back when the server was first setup each domain was added as an individual "Site" on IIS but shared the same root directory and hence the same session path. It would have remained unnoticed if we had not grown but as our traffic increased ever so often 2 users of different sites would end up sharing a session id causing the server to promptly implode on itself.
#3 - Most elegant fix
Same bastard IIS server as #2. Codebase was the most unsecure unstable travesty I've ever worked with - sql injection vuns in EVERY URL, sql statements stored in COOKIES... this thing was irreparably fucked up but had to stay online until it could be replaced. Basically every other day it got hit by bots ended up sending bluepill spam or mining shitcoin and I would simply delete the instance and recreate it in a semi un-compromised state which was an acceptable solution for the business for uptime... until we we're DDOS'ed for 5 days straight.
My hands were tied and there was no way to mitigate it except for stopping individual sites as they came under attack and starting them after it subsided... (for some reason they seemed to be targeting by domain instead of ip). After 3 days of doing this manually I was given the go ahead to use any resources necessary to make it stop and especially since it was IIS6 I had no fucking clue where to start.
So I stuck to what I knew and deployed a $5 vm running an Nginx reverse proxy with heavy caching and rate limiting linked to a custom fail2ban plugin in in front of the insecure server. The attacks died instantly, the server sped up 10x and was never compromised by bots again (presumably since they got back a linux user agent). To this day I marvel at this miracle $5 fix.1 -
Jim comes in and tells me that server RENEGADE-DB1 has no more space left and that he tried to remove a few ridiculous sized log files, but that the system wouldn't allow him. So he used some 3rd party tool to shutdown the processes that used those log files and then succesfully removed them.
Now the database is not working and Jim needs my help.
Hello darkness my old friend.11 -
Customer has thousands of clients - puts each client site under a subdomain of the main domain on a shared server. What happens to every single website when the server runs out of space?
But that'll never happen, right? We have lots of space. It certainly won't happen on day one of the main tech dev's holiday.
...twice...
It's fine, there's a backup, or atleast a redirect, right
.....right?
4 -
So probably about a decade ago at this point I was working for free for a friend's start-up hosting company. He had rented out a high-end server in some data center and sold out virtualized chunks to clients.
This is back when you had only a few options for running virtual servers, but the market was taking off like a bat out of hell. In our case, we used User-Mode Linux (UML).
UML is essentially a kernel hack that lets you run the kernel in user space. That alone helps keep things separate or jailed. I'm pretty sure some of you can shed more light on it, but that's as I understood it at the time and I wasn't too shabby at hacking the kernel when we'd have driver issues.
Anyway, one of the ways my friend would on-board someone was to generate a new disk image file, mount it, and then chroot to that mount path. He'd basically use a stock image to do this and then wipe it out before putting it live.
I'm not sure exactly what he was doing at the time, but I got a panicked message on New Years Day saying that he had deleted everything. By everything, he had done an rm -fr /home as root on what he had thought was the root of a drive image.
It wasn't an image. It was the host server.
In the stoke of a single command, all user data was lost. We were pretty much screwed, but I have a knack for not giving up - so I spent a ton of time investigating linux file recovery.
Fun fact about UML - since the kernel runs in user space as a regular ol' process, anything it opens is attached to that process. I had noticed that while the files were "gone", I could still see disk usage. I ended up finding the images attached to their file pointers associated with each running kernel - and thankfully all customers were running at the time.
The next part was crazy, and I still think is crazy. I don't remember the command, but I had to essentially copy the image from the referenced path into a new image file, then shutdown the kernel and power it back on from the new image. We had configs all set aside, so that was easy. When it finally worked I was floored.
Rinse and repeat, I managed to drag every last missing bit out of /proc - with the only side effect being that all MySQL databases needed to be cleaned up.3 -
21:30, sysadmin, chatting with my colleagues, when one posts a screenshot of a message he just received from a dev :
"Hello, sorry for bothering you this late but we have a demo tomorrow morning and the app is completely stalled. It fails with the message 'cannot write to <file>, no space left on device'"
I say "I bet that they somehow managed to make their DB grow uncontrollably".
Colleague asks which server hosts the app, Dev answers "one of ours", then adds after a few seconds "wait, do you need the IP of the server? Dev2 should be able to provide it", before finally adding "we use a scheme in <other project> DB actually".
Finally, Dev2 declares that the bug is solved: "There was a loop that caused a DB view to grow constantly and it filled the filesystem".
Me: "Called it".
They cleaned the view: 41GB freed.3 -
My worst experience was at my job where they told me I have to move to a permanent position from 3 years of contracting without a specific offer.
Why is that bad? In my country it means approximatly 40% lower wage.
I came into the job with PHP knowledge when they were looking for Perl on a project one year behind schedule. I learned the language and finished working demo in 6 weeks.
After that, every project that was ever assigned to me was done within 5-15% of the allocated time. I'm not kidding here. My manager loved be, because I was reliable, fast and I even 'accidentaly' solved other problems, like for instance I developed simple syslog search tool and benchmarked zip algos for reading speed, and the fastest had 70% better compression than the algo used before (gzip into plzip on 1-2gb files). That solved anothet problem - syslog servers did not have enough disk space and they didn't have money to upgrade the server.
The number of projects I touched or developed was over 20.
I also lead and developed our team's most successful tool, that every customer was throwing money to buy, while cutting down costs everywhere.
And after three years of that, my manager says that there are no more money for contractors. And the only possibility is going for employment. Without any specific offer! Just 'we cant do this anymore'.
Which I understand, that can happen in corporation, but ffs after all I've done, I expected warmer attitude. Not like 'you may have to leave, since we do not really care'.
I liked the people there, even though the corporation environment was lacking in many respects, but I wanted to help our local branch with everything I could and they gave up on me like that.
So I started looking elsewhere and I found a startup which offered 6 times the money I had in my previous job and promises to relocate me to USA. Which is the best thing that has happened to me that year and second best in my whole life!3 -
Did a bunch more cowboy coding today as I call it (coding in vi on production). Gather 'round kiddies, uncle Logan's got a story fer ya…
First things first, disclaimer: I'm no sysadmin. I respect sysadmins and the work they do, but I'm the first to admit my strengths definitely lie more in writing programs rather than running servers.
Anyhow, I recently inherited someone else's codebase (the story of my profession career, but I digress) and let me tell you this thing has amateur hour written all over it. It's written in PHP and JavaScript by a self-taught programmer who apparently discovered procedural programming and decided there was nothing left to learn and stopped there (no disrespect to self-taught programmers).
I could rant for days about the various problems this codebase has, but today I have a very specific story to tell. A story about errors and logs.
And it all started when I noticed the disk space on our server was gradually decreasing.
So today I logged onto our API server (Ubuntu running Apache/PHP) and did a df -h to check the disk space, and was surprised to see that it had noticeably decreased since the last time I'd checked when everything was running smoothly. But seeing as this server does not store any persistent customer data (we have a separate db server) and purely hosts the stateless API, it should NOT be consuming disk space over time at all.
The only thing I could think of was the logs, but the logs were very quiet, just the odd benign message that was fully expected. Just to be sure I did an ls -Sh to check the size of the logs, and while some of them were a little big, nothing over a few megs. Nothing to account for gigabytes of disk space gradually disappearing.
What could it be? I wondered.
cd ../..
du . | sort --sort=numeric
What's this? 2671132 K in some log folder buried in the api source code? I cd into it and it turns out there are separate PHP log files in there, split up by customer, so that each customer of ours (we have 120) has their own respective error log! (Why??)
Armed with this newfound piece of (still rather unbelievable) evidence I perform a mad scramble to search the codebase for where this extra logging is happening and sure enough I find a custom PHP error handler that is capturing (most) errors and redirecting them to these individualized log files.
Conveniently enough, not ALL errors were being absorbed though, so I still knew the main error_log was working (and any time I explicitly error_logged it would go there, so I was none the wiser that this other error-catching was even happening).
Needless to say I removed the code as quickly as I found it, tail -f'd the error_log and to my dismay it was being absolutely flooded with syntax errors, runtime PHP exceptions, warnings galore, and all sorts of other things.
My jaw almost hit the floor. I've been with this company for 6 months and had no idea these errors were even happening!
The sad thing was how easy to fix all the errors ended up being. Most of them were "undefined index" errors that could have been completely avoided with a simple isset() check, but instead ended up throwing an exception, nullifying any code that came after it.
Anyway kids, the moral of the story is don't split up your log files. It makes absolutely no sense and can end up obscuring easily fixable bugs for half a year or more!
Happy coding.6 -
Should’ve posted this after it happened, but it requires a bit of background anyway.
There’s this guy that oversees our OpenStack environment. My team often make jokes and groan about him in private because he’s so overbearing. A few months back, he had to take us to our data center to show us our new racks, and he kept saying stupid stuff like “you break this and it costs me $30,000” as if he owns everything. He’s just... one of THOSE people. Always speaks in such a condescending way. We make jokes that he is our “best friend”.
Our company is shifting most of our products to the cloud in response to the coronavirus (trying to make it an opportunity for “innovation”). This has involved some structural and responsibility changes in our department, and long story short, I’m now heading the OpenStack environment alongside other projects.
This means going through grueling 1-on-1 meetings with our “best friend”. It’s not too bad, I can be pretty patient with people, so I didn’t mind too much at first. Then a few things happened.
1. He sent a shared folder that he owned containing info related to the environments. Several documents were outdated and incomplete, so I downloaded them, corrected them, and then uploaded the documents to my teams file share, as I was supposed to since we now own the projects.
2. Several files were missing, and when I asked about them, he said “Oh, did you refresh the browser?”. I told him no, that I downloaded them locally and republished them to my teams server, because he was supposed to hand everything off to us at once. He says “Well, silly, how are you going to get updates if you’re looking at them locally?” and kind of chuckles at me like I’m stupid.
3. He insists on training me how to remote into one of the servers to check on cluster space, which in itself is fine. I understand others wanting to make sure things will be done right by the people who come after them. But he tells me to download SuperPutty. I tell him, “oh no, that’s alright. I don’t need putty”. He says “oh cool, what tool do you use for ssh?”. I answer him “Just Git. If I want to I can use a CentOs bash terminal too, because we have WSL installed”. He responds “You can’t ssh through Git”.
I was actually a little shocked. I didn’t know if he was serious or not so I was silent for a few seconds before hesitantly saying “yes you can”. He says “this is news to me” and I so I tell him “every single one of our build jobs fetches code from Git with ssh” and he seemed genuinely shocked and surprised by that.... so then it occurs to me to show him that you can ssh in Powershell and that REALLY blew his mind. He would not shut up about it for several minutes. I was amused until it just got annoying.
Needless to say, my team had been previously teasing me about having to work with him, so they found it hilarious when I told them afterwards.8 -
So we have an API that my team is supposed send messages to in a fire and forget kind of style.
We are dependent on it. If it fails there is some annoying manual labor involved to clean that mess up. (If it even can be cleaned up, as sometimes it is also time-sensitive.)
Yet once in a while, that endpoint just crashes by letting the request vanish. No response, no error, nothing, it is just gone.
Digging through the log files of that API nothing pops up. Yet then I realize the size of the log files. About ~30GB on good old plain text log files.
It turns out that that API has taken the LOG EVERYTHING approach so much too heart that it logs to the point of its own death.
Is circular logging such a bleeding edge technology? It's not like there are external solutions for it like loggly or kibana. But oh, one might have to pay for them. Just dump it to the disk :/
This is again a combination of developers thinking "I don't need to care about space! It's cheap!" and managers thinking "100 GB should be enough for that server cluster. Let's restrict its HDD to 100GB, save some money!"
And then, here I stand trying to keep my sanity :/1 -
Was just recalling one of the worst calls I ever got in IT...
Many years ago we had a single rack for all of our servers, network and storage (pre virtualization too!).
We had a new security system installed in the building and the facilities manager let the guy into the server room to run all the sensor cables in because that is where they wanted their panel... the guy was too lazy to get up on the roof and in the attic repeatedly so after he checked it out he went around every where and drilled a hole straight up where he wanted the sensor wire to go... well the server room was not under an attic space... when he found he had drilled through to the out side... HE FILLED IT WITH EXPANDING FOAM.... the membrane on the roof was damaged... that night it rained... I got a call at 4 am that systems were acting funky and I went in... when I opened the door it was literally raining through the corners of the drop ceiling onto the rack... An excellent DR plan saved our asses but the situation cost the vendor's insurance company $30k in dead equipment and another $10k in emergency labor. Good thing for him we had so little equipment in that room back in.
Moral of the story... always have a good DR plan... you never know when it will rain in the server room.... :)3 -
I provide hosting for my clients. About 3 months ago I discovered that the hosting company that I'd been using had been swallowed up by EIG, which explained why the tech support had gone downhill.
So, I jumped to another hosting company. Same shit different company!
Apparently the fact that my browsers sit at "connecting" for up to 30 seconds, and I get a "could not connect to" message half the time while I'm trying to fucking work on a deadline is the fault of some plug-in in a WordPress installation!
Oh yeah? Why then does this shit happen when I'm working on a pure html/css site?
Why then did it start happening after they "updated" my shared server?!
Oh, but the bastards suggest that I buy Cloudflare or pay for more space!
You fuckers made my work take 3 times as long, and you made an important migration fail!
Network places make mistakes. We all do. That's cool. Fucking own up to it, talk to me like a techie, and DON'T TRY TO BLAME IT ON ME OR MY TOOLS!
Fuck you! I think I'm gonna give Google Cloud a try, and do this shit myself!7 -
Built a Media server using emby and then realized that one of my old TV shows with only 5 seasons was taking 129GB of storage space and I would need to transcode them, did my research and decided to use VP9 for the codec (YouTube, native browser support, etc.) found that it reduced my shows size to 51GB with great quality still. And then found out that emby doesn't allow direct play of VP9 on browsers and it's transcoding back to H264 Everytime I watch it. Submitted a issues, we'll see what happens now.1
-
How could I only name one favorite dev tool? There are a *lot* I could not live without anymore.
# httpie
I have to talk to external API a lot and curl is painful to use. HTTPie is super human friendly and helps bootstrapping or testing calls to unknown endpoints.
https://httpie.org/
# jq
grep|sed|awk for for json documents. So powerful, so handy. I have to google the specific syntax a lot, but when you have it working, it works like a charm.
https://stedolan.github.io/jq/
# ag-silversearcher
Finding strings in projects has never been easier. It's fast, it has meaningful defaults (no results from vendors and .git directories) and powerful options.
https://github.com/ggreer/...
# git
Lifesaver. Nough said.
And tweak your command line to show the current branch and git to have tab-completion.
# Jetbrains flavored IDE
No matter if the flavor is phpstorm, intellij, webstorm or pycharm, these IDE are really worth their money and have saved me so much time and keystrokes, it's totally awesome. It also has an amazing plugin ecosystem, I adore the symfony and vim-idea plugin.
# vim
Strong learning curve, it really pays off in the end and I still consider myself novice user.
# vimium
Chrome plugin to browse the web with vi keybindings.
https://github.com/philc/vimium
# bash completion
Enable it. Tab-increase your productivity.
# Docker / docker-compose
Even if you aren't pushing docker images to production, having a dockerfile re-creating the live server is such an ease to setup and bootstrapping the development process has been a joy in the process. Virtual machines are slow and take away lot of space. If you can, use alpine-based images as a starting point, reuse the offical one on dockerhub for common applications, and keep them simple.
# ...
I will post this now and then regret not naming all the tools I didn't mention. -
Not a hack but more of an orchestrated attack. It was high school and our computer labs ran windows and all of them were connected to a central server. Now i had just learnt about windows api and how it can be used to check the space available on a disk. So i wrote a small script to to write chunks of 5mb files in the directory where TURBO C++ was installed and let it run till the system ran out of space.
Then in the spirit of conspiracy i added the said script to the central node and asked everyone in the lab to copy it locally and execute.
Then a few days later, the poor lab incharge corners me and say who added the ms91.dll file(do not remember the exact name😐). I said that it is a standard Microsoft dll and also how would I know. Then he goes on saying how he had to reinstall windows on all computers. At first I felt sorry but then the spirit of satan rose in me and I denied any responsibility about it and returned back to class where each of my classmates had a good laugh about it. 😂😂 -
Incredibly drunk last night.
Decided to take the CD/DVD drive out of my old PC (now a server) and put it into my new gaming PC.
Required a partial rebuild because:
1) GPU was too close to PSU to plug in a new SATA power line
2) CPU cooling lines were directly in the way of the space for the DVD/CD bay
3) Had to route the new power cables of course
Incredibly, even though I couldn't stand, I was able to perfectly execute the maintenance on both machines and I'm even using the new PC to write this rant now.
I must be a God.5 -
This occurred on a company wide chat
Developer: Getting an error insufficient space on disk when uploading to server, any clues?
CTO: Let me Google the error a second.
Not sure if he was joking...2 -
I've fucking had it with youtube, fucking jizz slapping knob butlers. I'm going to setup a mirror on my server, the idea is:
- Setup a youtube-dl cron that fetches multiple times a day both audio and video versions of the music playlist I have, hopefully with some sort of progress tracking of each download and total, so I could check if it has run successfully and have a nice dashboard, might need to do that myself (except if compactd proves itself to manage that all)
- Need to figure out a way to download the "best" quality but not go beyond 1080p, since if some videos for some reason are uploaded @ 4k, that'll be a waste of space
- Have Compactd/Funkwhale/Koel as the music player frontend for the audio version of the files, preferably one of them should offer download of the files too, so I could have a similar setup to spotify, though I could probably also just have some filebrowser installed or have a password protected index.
- Not sure what to use for the video versions, since sometimes the video goes with the music; plex? emby? suggestions are welcome
- Saw somebody (ab)using google drive as their backup for all the music they download, so I want to setup something similar, rsyncing all videos and music to some account, so in case shit majorly hits the fan, I can just download everything back
15 -
"Hello, the drive of your XYZ server is getting full, would it be possible to prune some of the unused and/or old docker images and layers there please? Alternatively, we can offer to replace the drives with a higher capacity models for FOO extra per month"
"Hello, the disk use keeps growing and has reached the 95% mark, please prune some of your images to make space for new. If you wanted to choose the alternate option of disk capacity increase, we would have to do that as soon as possible, otherwise you may run out of space before the RAID array rebuilds"
"Hello, your server XYZ has completely ran out of disk space. Any changes that would require data being saved on disk may and probably will fail. Please free some space as soon as possible"
Ugh, I hate clients that just don't cooperate until shit hits the fan...
And no, we could not prune the space ourselves, its not our data to delete whenever we think it necessary.
We merely manage the machine's operation, keeping it online and its services running.2 -
Was running low on ssd space, so I decided to have a thorough look at what was occupying all of it. First I found out that I had about 5 gigs (!) of leftovers from microsoft sql server which I unfortunately had to use once (thanks microsoft for your shit uninstallers). Then I found I still had a .gradle folder (uninstalled a while ago, maven ftw) with another 5 gigs of cache. That should give me some room to breathe.4
-
Rant
Wtf is Instagram. Seriously how many times do you have to be hit in the head with a fucking shovel to be even moderately amused by that garbage fire. You can't even upload more than ten files at once?! I mean I get server space but fuck me! That shit is goddamn fucking pathetic as fuck. These cock licking cockroaches who find interest in this banal baby vomit green trash are using precious oxygen. Seriously, to upload multiple photos took like twenty minutes. And then they were all wrong because I shot them 4:3. But this is a fucking photo sharing application and crops wrong with 4:3. What the living, breathing, fucking fuck? People actually live with this shit and use this?! ARE YOU FUCKING KIDDING ME?! How narcissistic and stupid do you have to be to put with an application that doesn't even fucking run in browser. This was my first time ever attempting this fucking black hole of vapid self destruction. Never again. And fuck people willing to do it.6 -
I am currently doing my first ever internship. It is a medium-ish sized IT company and I basically do stuff in networking and software development. I sit on my chair, wheel it back and forth the small space behind my desk for like and hour. Then I go to the cafeteria, eat whatever is there (it’s absolutely free? Hopefully). There is a pool table which is always occupied. Then I sit in the lab and configure routers till 8 in the night. Boring.
I am developing a management system side by side so I break my head over server side routes (seriously, they are confusing) over the night.
So coffee is my mantra and boring is my life.2 -
Can someone help me understand?
I subscribed to a nifty IT-releated magazine, and on its back, there's an ad for "Dedicated root server hosting", nothing unusual at a first glance, but after I read the issue, I decided to humor them and see what it is that they offered, and... It just... Doesn't make sense to me!
An ad for "Dedicated Root Server" - What is a dedicated root server first of all? Root servers of any infrastructure sound pretty important.
But, the ad also boasts "High speed performance with the new Intel Core i9-9900K octa-core processor", that's the first weird thing.
Why would anyone responsible enough want to put an i9 into a highly-reliable root server, when the thing doesn't even support ECC? Also, come on, octa-core isn't much, I deal with servers that have anywhere between 2 and 24 cores. 8 isn't exactly a win, even if it has a higher per-core clock.
Oh, also, further down the ad has a list of, seeming, advantages/specs of the servers, they proclaim that the CPU "incl. Hyper-Threading-Technology"... Isn't that... Standard when it comes to servers? I have never seen a server without hyperthreading so far at my job.
"64 GBs of DDR4 RAM" - Fair enough, 64 gigs is a good amount, but... Again, its not ECC, something I would never put into a server.
"2 x 8 TB SATA Enterprise Hard Drive 7200 rpm" - Heh, "enterprise hard drive", another cheap marketing word, would impress me more if they mentioned an actual brand/model, but I'll bite, and say that at least the 7200 rpm is better than I expected.
"100 GBs of Backup Space" - That's... Really, really little. I've dealt with clients who's single database backup is larger than that. Especially with 2x8 TB HDD (Even accounting for software raids on top)
This one cracks me up - "Traffic unlimited"
Whaaaat?! You are not gonna give me a limit to the total transferred traffic to the internet for my server in your data center? Oh, how generous of you, only, the other case would make the server just an expensive paperweight! I thought this ad was for semi-professionals at least, so why mention traffic, and not bandwidth, the thing that matters much more when it comes to servers? How big of a bandwidth do I get? Don't tell me you use dialup for your "Dedicated Root Server"s!
"Location Germany or Finland" - Fair enough, geolocation can matter when it comes to latency.
"No minimum contract" - Oooh, how kiiiind of you, again, you are not gonna charge me extra for using the server only as long as I pay? How nice!
"Setup Fee £60" - I guess, fair enough, the server is not gonna set itself up, only...
The whole ad is for "monthly from £55.50", that's quite the large fee for setup.
Oh, and a cherry on top, the tiny print on the bottom mentions: "All prices exclude VAT and are a subject to..." blah blah blah.
Really? I thought that this sort of almost customer deceipt is present only in the common people's sphere!
I must say, there's being unimpressed, and then... There's this. Why, just... Why? Anyone understands this? Because I don't...12 -
!rant
Need some opinions. Joined a new company recently (yippee!!!). Just getting to grips with everything at the minute. I'm working on mobile and I will be setting up a new team to take over a project from a remote team. Looking at their iOS and Android code and they are using RxSwift and RxJava in them.
Don't know a whole lot about the Android space yet, but on iOS I did look into Reactive Cocoa at one point, and really didn't like it. Does anyone here use Rx, or have an opinion about them, good or bad? I can learn them myself, i'm not looking for help with that, i'm more interested in opinions on the tools themselves.
My initial view (with a lack of experience in the area):
- I'm not a huge fan of frameworks like this that attempt to change the entire flow or structure of a language / platform. I like using third party libraries, but to me, its excessive to include something like this rather than just learning the in's / out's of the platform. I think the reactive approach has its use cases and i'm not knocking the it all together. I just feel like this is a little bit of forcing a square peg into a round hole. Swift wasn't designed to work like that and a big layer will need to be added in, in order to change it. I would want to see tremendous gains in order to justify it, and frankly I don't see it compared to other approaches.
- I do like the MVVM approach included with it, but i've easily managed to do similar with a handful of protocols that didn't require a new architecture and approach.
- Not sure if this is an RxSwift thing, or just how its implemented here. But all ViewControllers need to be created by using a coordinator first. This really bugs me because it means changing everything again. When I first opened this app, login was being skipped, trying to add it back in by selecting the default storyboard gave me "unwrapping a nil optional" errors, which took a little while to figure out what was going on. This, to me, again is changing too much in the platform that even the basic launching of a screen now needs to be changed. It will be confusing while trying to build a new team who may or may not know the tech.
- I'm concerned about hiring new staff and having to make sure that they know this, can learn it or are even happy to do so.
- I'm concerned about having a decrease in the community size to debug issues. Had horrible experiences with this in the past with hybrid tech.
- I'm concerned with bugs being introduced or patterns being changed in the tool itself. Because it changes and touches everything, it will be a nightmare to rip it out or use something else and we'll be stuck with the issue. This seems to have happened with ReactiveCocoa where they made a change to their approach that seems to have caused a divide in the community, with people splitting off into other tech.
- In this app we have base Swift, with RxSwift and RxCocoa on top, with AlamoFire on top of that, with Moya on that and RxMoya on top again. This to me is too much when only looking at basic screens and networking. I would be concerned that moving to something more complex that we might end up with a tonne of dependencies.
- There seems to be issues with the server (nothing to do with RxSwift) but the errors seem to be getting caught by RxSwift and turned into very vague and difficult to debug console logs. "RxSwift.RxError error 4" is not great. Now again this could be a "way its being used" issue as oppose to an issue with RxSwift itself. But again were back to a big middle layer sitting between me and what I want to access. I've already had issues with login seeming to have 2 states, success or wrong password, meaning its not telling the user whats actually wrong. Now i'm not sure if this is bad dev or bad tools, but I get a sense RxSwift is contributing to it in some fashion, at least in this specific use of it.
I'll leave it there for now, any opinions or advice would be appreciated.16 -
TL;DR my first vps got hacked, the attacker flooded my server log when I successfully discovered and removed him so I couldn't use my server anymore because the log was taking up all the space on the server.
The first Linux VPN I ever had (when I was a noob and had just started with vServers and Linux in general, obviously) got hacked within 2 moths since I got it.
As I didn't knew much about securing a Linux server, I made all these "rookie" mistakes: having ssh on port 22, allowing root access via ssh, no key auth...
So, the server got hacked without me even noticing. Some time later, I received a mail from my hoster who said "hello, someone (probably you) is running portscans from your server" of which I had no idea... So I looked in the logs, and BAM, "successful root login" from an IP address which wasn't me.
After I found out the server got hacked, I reinstalled the whole server, changed the port and activated key auth and installed fail2ban.
Some days later, when I finally configured everything the way I wanted, I observed I couldn't do anything with that server anymore. Found out there was absolutely no space on the server. Made a scan to find files to delete and found a logfile. The ssh logfile. I took up a freaking 95 GB of space (of a total of 100gb on the server). Turned out the guy who broke into my server got upset I discovered him and bruteforced the shit out of my server flooding the logs with failed login attempts...
I guess I learnt how to properly secure a server from this attack 💪3 -
Fuck you scp. I was uploading 6GB file to an EC2 server. Well, needless to say, "no space left on device" after all 6GB transferred was the biggest FUCK YOU moment. Seriously. Send the file size and check before you waste 30 minutes of my time. Oh, and don't read CLI command data as part of the transfer. You suck.8
-
In modern applications it's media files that take up so much space, code files are relatively s-
*checks size of Rust project* -> 4GB wtf?
Turns out Rust Language Server generated fucking 3.6 gigabytes of "code analysis"!
Hey, I like what they're doing with RLS but seriously, 3.6 GB? I'm on an SSD, people. Every byte counts.
Rust is still 😍 though -
PouchDB.
It promised full-blown CRDT functionality. So I decided to adopt it.
Disappointment number one: you have to use CouchDB, so your data model is under strict regulations now. Okay.
Disappointment number two: absolutely messed up hack required to restrict users from accessing other users’ data, otherwise you have to store all the user data in single collection. Not the most performant solution.
Disappointment number three: pagination is utter mess. Server-side timestamps are utter mess. ANY server-side logic is utter mess.
Just to set it to work, you need PouchDB itself, websocket adapter (otherwise only three simultaneous syncs), auth adapter (doesn’t work via sockets), which came out fucking large pile of bullshit at the frontend.
Disappointment number four, the final one: auth somehow works but it doesn’t set cookie. I don’t know how to get access.
GitHub user named Wohali, number one CouchDB specialist over there, doesn’t know that either.
It also doesn’t work at Incognito mode, doesn’t work at Firefox at all.
So, if you want to use PouchDB, bear that in mind:
1. CouchDB only
2. No server-side logic
3. Authorization is a mess
4. Error logs are mess too: “ERROR 83929629 broken pipe” means “out of disk space” in Erlang, the CouchDB language.
5. No hosting solutions. No backup solutions, no infrastructure around that at all. You are tied to bare metal VPS and Ansible.
6. Huge pile of bullshit at frontend. Doesn’t work at Incognito mode, doesn’t work at Firefox.8 -
I think I am going to start doing lets play series for minecraft and post online. I spend a lot of time playing modpacks with my kids and I should just start recording and add audio commentary later. I can compress the video and do speedups for boring parts and cut other segments. If I create a spreadsheet for the modpack and do it by numbers then I can burn through the modpack fast. I like watching lets play series to figure out modpacks. Especially direwolf. However, these lets play episodes are a good 30 to 45 minutes long. I want to play, not watch someone else play. I hate the ones where they don't know how to do the modpack and they don't cut the video. Direwolf does a great job editing his videos. His video is FULL of good content.
If I can get the videos short enough it will keep the attention span of the mass plebes that cannot find their way out of a paper bag. This is definitely catering to the lowest denominator. I can turn my hobby into something useful. I want to try and compress the 30 minute video into 5 to 10 minutes. It will be a minecraft junky playthrough. Maybe add some time lapse stuff too.
I think I should do the playthrough first, reset server and do again with video capture. I want to incorporate comedy into the videos too. Gaming should be fun. I wonder how much space a 30 minutes video will take?6 -
One poor pepega like me will spend days optimizing a web app, reducing the bundle size, reusing components as much as possible to save space, carefully choosing the right libraries for the right jobs and doing some careful tayloring to bring them in line with your needs, choosing the right webpack plugins to compile everything exactly like you want and keeping track of every dependency to make sure nothing unwanted makes its way to the final product, caching results to avoid any unnecessary call to the server, then some random team leader randomly forces you to drop in jquery-era plugins just because they look nice and won't listen to a word you're saying.
I KNOW WHAT THE FUCK IS A SWEET ALERT; I DIDN'T USE IT FOR A FUCKING REASON.2 -
Soo... Let me get this straight... My boss reeeeeeally wants me to reconfigure our database system to sync data between each of our 15 sites... Let me this about this...
Our database is an MS Access database originally written about 17 years ago. It was written as a standalone database that runs a unique instance for each of our sites.The person responsible for the database (still not the original developer) before I took over 6 years ago bragged about how they were "an 80s developer" (w...t...f!). Even with all of the fixes and additions (additions because... F&$#ing of course there are!) It's still basically held together by duct tape and spit.
Hmmm... Ok, still possible. What's the environment I'm working in... I have absolutely ZERO control of our workplace network... That's a whole other department. Due to the nature of the workplace (and it's sites) there is extreme limitation on network access.
Well... If I'm Reeeeeeally nice to the people in charge of the network, maaaaaybe they can give me access to a little server space.
A very long shot, but, doab.... Oh, the boss would really like this handled in the next couple months...
F$#k you! There is no way on God's (still) green earth that I... Alone... Can rewrite a legacy database... written across 4 or 5 different versions of FU$KING MS Access, and give 15 sites, with extremely limited networking, real time data sync in... Oh, a few months.
Now, I do not work with "computer people". I'm usually lucky when my coworkers remember their passwords (which, even if they don't, WHY tell ME! I don't run the network!)
And when I tell my boss basically what I just said... In a nice, pleasant way... They suggest I'm not giving the problem enough thought...
FU#K YOU IGNORANT ASS! Write me a ToDo list in MS Access (no, I'm not going to tell you where to start) in under an hour then, MAYBE, we can talk about... No... Just NO... Can't be done!
*Takes deep breath* so... Lovely weather we're having, right?3 -
After learning a bit about alife I was able to write
another one. It took some false starts
to understand the problem, but afterward I was able to refactor the problem into a sort of alife that measured and carefully tweaked various variables in the simulator, as the algorithm
explored the paramater space. After a few hours of letting the thing run, it successfully returned a remainder of zero on 41.4% of semiprimes tested.
This is the bad boy right here:
tracks[14]
[15, 2731, 52, 144, 41.4]
As they say, "he ain't there yet, but he got the spirit."
A 'track' here is just a collection of critical values and a fitness score that was found given a few million runs. These variables are used as input to a factoring algorithm, attempting to factor
any number you give it. These parameters tune or configure the algorithm to try slightly different things. After some trial runs, the results are stored in the last entry in the list, and the whole process is repeated with slightly different numbers, ones that have been modified
and mutated so we can explore the space of possible parameters.
Naturally this is a bit of a hodgepodge, but the critical thing is that for each configuration of numbers representing a track (and its results), I chose the lowest fitness of three runs.
Meaning hypothetically theres room for improvement with a tweak of the core algorithm, or even modifications or mutations to the
track variables. I have no clue if this scales up to very large semiprime products, so that would be one of the next steps to test.
Fitness also doesn't account for return speed. Some of these may have a lower overall fitness, but might in fact have a lower basis
(the value of 'i' that needs to be found in order for the algorithm to return rem%a == 0) for correctly factoring a semiprime.
The key thing here is that because all the entries generated here are dependent on in an outer loop that specifies [i] must never be greater than a/4 (for whatever the lowest factor generated in this run is), we can potentially push down the value of i further with some modification.
The entire exercise took 2.1735 billion iterations (3-4 hours, wasn't paying attention) to find this particular configuration of variables for the current algorithm, but as before, I suspect I can probably push the fitness value (percentage of semiprimes covered) higher, either with a few
additional parameters, or a modification of the algorithm itself (with a necessary rerun to find another track of equivalent or greater fitness).
I'm starting to bump up to the limit of my resources, I keep hitting the ceiling in my RAD-style write->test->repeat development loop.
I'm primarily using the limited number of identities I know, my gut intuition, combine with looking at the numbers themselves, to deduce relationships as I improve these and other algorithms, instead of relying strictly on memorizing identities like most mathematicians do.
I'm thinking if I want to keep that rapid write->eval loop I'm gonna have to upgrade, or go to a server environment to keep things snappy.
I did find that "jiggling" the parameters after each trial helped to explore the parameter
space better, so I wrote some methods to do just that. But what I wouldn't mind doing
is taking this a bit of a step further, and writing some code to optimize the variables
of the jiggle method itself, by automating the observation of real-time track fitness,
and discarding those changes that lead to the system tending to find tracks with lower fitness.
I'd also like to break up the entire regime into a training vs test set, but for now
the results are pretty promising.
I knew if I kept researching I'd likely find extensions like this. Of course tested on
billions of semiprimes, instead of simply millions, or tested on very large semiprimes, the
effect might disappear, though the more i've tested, and the larger the numbers I've given it,
the more the effect has become prevalent.
Hitko suggested in the earlier thread, based on a simplification, that the original algorithm
was a tautology, but something told me for a change that I got one correct. Without that initial challenge I might have chalked this up to another false start instead of pushing through and making further breakthroughs.
I'd also like to thank all those who followed along, helped, or cheered on the madness:
In no particular order ,demolishun, scor, root, iiii, karlisk, netikras, fast-nop, hazarth, chonky-quiche, Midnight-shcode, nanobot, c0d4, jilano, kescherrant, electrineer, nomad,
vintprox, sariel, lensflare, jeeper.
The original write up for the ideas behind the concept can be found at:
https://devrant.com/rants/7650612/...
If I left your name out, you better speak up, theres only so many invitations to the orgy.
Firecode already says we're past max capacity!5 -
Story time;
Major project, multi million budget, huge business and IT coordination, board level status updates, meeting started back in March 2018 for a Go Live of Aug 2019.
Based on draft requirements (and experience) I request the test environment be built for half of the work. Turns out that no one told Server Eng and they are out of space in both dev and prod until Q2 of 2019. We went from Green to Red because a Service Request.5 -
Few days back, I developed an app for a client where users can buy textile designs online.
The designs to be uploaded on the server must be square to display correctly on the app. so I had to make them square manually (by either pattern repetition or by filling extra space).
I was like "fuck me!", 800 design image to make it square and each takes like 1 and half minute. I did uploaded 30 to 40 images and then...
I got really frustrated and I was lazy to make more designs square anymore.. So I developed an algorithm that would identify the type of design and then it automatically makes it square by self decision.
so that was my little anti-laziness for my big laziness. -
Hello, world!
Okay, guys and gals... I need your creative minds. I need a concept for sort of a property manager for my game.. I have an idea of my own, feel free to tear it apart or throw it out the window.
So basically.. You'll no longer have one Computer System (and you wont instantly hit the login screen for that System on startup) Instead, you'll have a lot of things. They will probably only be represented using text and menu's (likely no 3D or 2D environments or anything.. Though, a setup like News Tycoon would be epic, but I think that would be too much for this game.) You'll basically start off with a small space (probably a basement) with x amount of free space. In that space, you'll need to add things like a desk, chair, and a laptop, or tower + monitor. You can also buy things like server rigs with a ton of space, but those are pricy and bulky. Each item costs X amount and takes up X amount of space. Also, you'll need a desk for a monitor (or multiples..) and other things.. (Like your rubber duck collection ;P JK) You can also rent and manage servers. (renting is more exspensive in the long run, but things on your server are not on your property. But, if you own a server on your property you can rent space to to NPCs) As well as manage your devices, properties, stocks, etc..
Also, there will be in-game time. Depending on how "comfortable" you are will determine how long you can stay up in a day. In-game events will take place later on at specific times so staying up (or not..) will need to be managed well. Especially if you're being targeted by a rival (NPC) hacker.7 -
Manager ran docker prune on a server that had run out of drive space. One of our internal sites/automation tools was running on said server in docker. Fortunately the only persistent info that was wiped is user/passwords, we don't even bother backing it up, but a bit of tedious admin this morning...4
-
10 Signs You Picked the Wrong ISP !!
10. Their company logo: two tin cans and a length of string.
9. You check out their address, and it's a phone booth containing a Compaq portable and an acoustic coupler.
8. Their chief technical officer lives in a 10-foot-by-7-foot shack in the woods.
7. Their proud boast: "We've been on the Internet since it was CB radio."
6. Their promo materials use the words "information" and "superhighway" in the same sentence.
5. You order an SLIP/PPP connection, e-mail, and 2MB of server space for your personal Web site, and the voice on the other end of the phone asks, "Would you like fries with that?"
4. "As seen in Better Business Bureau special reports."
3. "Access speeds up to 9,600 bps in most areas."
2. They hawk both domain names and Rolexes on street corners.
1. They charge by the word.2 -
junior developer raises an issue saying that there's an application deployment error on one of their dev clusters.
sysadmin asks them to go back and look at the error logs and come back with the problem.
they come back saying, "No space left on device"
sysadmin takes a look at server. finds this :
5 -
It was about 2:30am.. The darkness had been dominating the outside for a while, and I was having issues with my partitions on my CentOS server. Yup that's correct. I think.
I really wanted to go to bed. Last thing I had to do, was re-allocate some space from centos-home to centos-root. But I fucked up, of course I did.
After about half an hour of making food and trying different stuff to solve the "Can't read superblock error" error, I found an answer that just lead to "Can't read secondary superblock error, sorry".
At least they apologize now lol.
I ended up trashing the centos-home volume (is volume and partition the same ?) and just smashing it all onto centos-root. I lost some data, but screw that, stuff is working and I'm not going to bed.
Yeah, stuff is working. I hope. No errors encountered yet.
Moral of the story: Home partition isn't needed and it's okay to kill it1 -
No actual data loss here, but the feeling of data loss.
After having my data scattered across several devices i decided to get a grip on it use a cloud. I'm too paranoid for a real cloud so i used a local nextcloud installation. That was done via docker and with a 2TB raid1-array.
I noticed that after restarting the server the cloud was somehow reset and pointed me to the setup-page, afterwards my files were already there. It did strike me as odd but i figured "maybe don't restart the server in the next time".
But i did restart it. And this time i had to setup the cloud again, but my files were gone. I got close to a heart attack, even though all those files weren't that valuable. I ripped one disk from the usb hub, connected it to my laptop and tried to mount it, but raid array. Instead i started photorec and recovered a bunch of files, even though their names were some random hex and i knew i'd spend my next weeks sorting my files. While photorec ran i inspected the docker container and saw that there were only 10GB of space available. After a while and one final df i found the culprit: the raid. For some reason the raid wasn't mounted at boot and docker created the volumes on the servers hard disk, same goes for the container data. After re-adding the disk to the hub i mounted the raid and inspected everything again. All my files were still there.
At no point did i lose my data, but the thought was shocking enough. It'd be best not to fiddle with this server in the next time. -
5 minutes till I go home. And server breaks... Out of space and a bunch of the automation tools have thus done harm. I'm no DevOps. But I just want to go home but have to sort it out.
-
One of my uncle is becoming a classic nightmare.
He was kind of getting offended that I never payed much attention to his request of making a website for his impromptu travel agent sidejob.
He claims he gets approached by some people for tour packages. His revenue model is simply taking the payment from them with his commission and passing over responsibilities and everything else to some other travel agent. I don't know how he has the connections to make it happen or build it as a sustainable business but that's none of my business.
Anyway, what irritates me most is that he doesn't seem willing to invest in building the site. I strongly suspect he expects me to build it free ( free as in I cover expense for server and domain ) for him. He didn't have a solid plan on what features he is looking for in the website or even come up with a proper name for the site. He basically told me to buy whatever I think is good.
When I asked him to pay some money for buying the server space, he has gone mum about it.
My best guess is that he is probably looking on internet to do it himself and outsmart me.
Well, good for me.1 -
Stores uploaded files in the cloud to save space on server. Caches them locally to save accessing cloud..
1 -
So we started to get build failures because the build server is full. Team leader asked the co-owner for more space. Got told we should just do less builds. You know stuff is outrageous when even your team leader goes on a rant about how stupid that is and how things are going to crash and burn in the future but nobody gives a damn.3
-
Best shell (bash) utilities to install? Looking to pimp up my headless server. So far I have tree (path visualizer), tmux, and nnn (disk space tool)8
-
So, today, I wanted to try setting up a wireguard VPN server on my little raspberry pi at home. I... expected /some/ issues, but what I found dumbfounded me.
1 - I already had the wireguard package from the unstable branch of the main raspbian repo installed... Huh, okay.
2 - Setting up config was extremely easy... Wow, so the rumors were true. Wireguard really is almost dumb-simple.
3 - Failed to create a network interface? Oh, trouble, here it is! So lets see... modprobe wireguard... Nope. Don't have the module? What?
4 - Reconfigure package to rebuild the module - missing kernel headers? Huh... weird
This was the simple stuff... Then I went down the rabbit hole of the Raspberry Pi ecosystem:
1 - There is the Raspberry Pi Bootloader, that is apparently separate from the Kernel itself. And I didn't seem to have any of the standard linux-image-* installed... What? Weird, yet there I was, running a 4.19.42-v7+ kernel...
2 - No kernel and no headers... What... The... Fuck
3 - Okay, so... Lets just... try to install the latest kernel image then? One apt-get install... It downloaded the image, but during package configuration, it failed because... I didn't have... its headers? What? What for? And if it needs them (for whatever reason), why isn't the headers package as a dependency? Ugh, whatever...
4 - Another apt-get install and... Okay, building the initrd image aaaaand...
FAIL
WHAT. What is it this time!?
Oh... Ran... No more space on device? What? Is /boot independent? Of course it is, it has to be, its a bloody different filesystem
Okay, so, lets che-OH MY GOD WTF.
Its just bloody 45 MBs big! The entire /boot is just 45 MBs large. WHY. THE. FUCK.
This was a default raspbian install from I have no idea when. But... Why. Oh WHY would ANYONE pre-configure /boot to be this incredibly tiny!?
No wonder the new init ramdisk couldn't fit in there! Its already used up from 64%!
Thanks, Raspbian Devs, now I gotta reinstall the whole system because, yes, the /boot is, of course, sector 8192. Just far enough from 2048 that there are *some* sectors free - About 3 MBs.
So what did I try? Remove the partition and recreate it from the very beginning. Only... I never tried in in the past, and okay, kernel doesn't like having the partition where its image resides deleted on the fly, it will not give up FDs pointing there or something.
So now, I have a system I cannot reboot, or it will never boot back up :|
Thanks, Raspbian!
I need to get a cheap 1U somewhere or something T.T1 -
I'm trying to install ubuntu server 19.04 on a machine that also has windows 10 on it. The SSD is already split into two parts, one is an ntfs partition for windows and the other is free space with no partition. That's where I want to install the server, but the installer doesn't seem to be aware of the windows partition and I don't want to accidentally format it, overwrite it or make it unbootable.
Is it even possible to dual boot with ubntu server 19.04?10 -
I'm just dumping 10 GB of data remotely from a mysql db, because my el cheapo VPS run out of space
can you suggest a good book?
oh, actually I already found one, the title is "Prepare your fucking server/workspace properly if you want to play around with a lot of data"5 -
Been reading for a while now, finally frustrated enough to add my rant...
Backing up my home server with Veeam to finally ditch raid 5 and add some space. 38% finished when we had to leave for a Thanksgiving dinner. Thought that was perfect because I'd come home to a finished backup, install the new drives and get Plex/webserver back up and running. Nope. Win 10 decides to update and reboot in the middle of my freaking backup at 79% complete. Now, I've just told the friends and family I was with to expect the outage in the next hour or two thinking I was ready. Nope. Start all over again. None of this is truly important, really... But Jesus, that's annoying.
Win 10, you have a special place in hell. And Veeam, as much as I love you, you can be right beside them for not letting me run backup console on Linux.1 -
Today at work, I had to do a dry run of our new production environment config for our VM server.
So I setup ESXi in a vm in my workstation. Installed it it, no problem. Setup some VMs, still going good. Then my supervisor came and said I have to make some tweaks and use vCenter. I thought: meh, that came late but ok. Download the vCenter installer from our internal CDN and ran it. Sorry general config, blah blah blah. "Setup with embedded or external platform service controller?" -"Embedded" - "minimal requirements: 11GB ram, 250GB disk storage, 2 CPU cores". Well... Fuck me. My workstation specs: 8 GB RAM, 128 GB SSD, 4 cores.
What the bloody fucking hell does this stuff need 250 GB disk space for?!
Well at least I've got a permanent upgrade for my workstation.1 -
Not a rant more like a question
Hello devRant,
I am currently planning to purchase a small home server + media client (with Kodi).
A small Linux Distro running the Hometheateroftware Kodi will run on the media clients (Odroid C2). The control is then over an app over the local network. The database of Kodi should be on the server in the form of a MySQL database. The movies, pictures, music are also streamed by the server (max. 2 simultaneously) via SMB (simplest variant). In addition, the server is to be accessible to the outside via a web interface to act as a cloud (maybe nextcloud). The whole should be optimized for stability and longevity. In addition, a small GitLab CE instance will probably run on the server. Do you have any comments or objections? The fact that I only take 2x ne 2 TB hard drive has the simple reason that I currently have no need for more space. Sometimes it happens to me that I forget completely obvious things :D -
Don't intentionally discard data you can not recover from at least 1 other source. Log everything. Disk space costs less than critical data loss. Especially important working with server to server systems.
-
Currently debugging a project that was written over 4 years ago...
At first all was well in the world, besides the ever present issue off our goddamn legacy framework. This framework was written 7 years ago on top of an existing open source one, because the existing one was 'lacking some features' & 'did not feel right'.
Now those might be perfectly fine reasons to write a layer on top of a framework, but please, for all future devs sanities, write fucking documentation and maintain it if you're going to use said framework in all major projects!!
Anyhow back to the situation at hand, I'm getting familiar with the project, sighing at the use of our stupid legacy framework, attempting to recreate the reported bugs...
Turns out I can't, well I get other bugs & errors, but not the reported ones. I go to the production server, where I suddenly do can reproduce them...
Already thinking, fuck my life, and scared for the results... I try a 'git status' on the production server....
And yep, there it is, lo and behold, fucking changes on production, that are not in git, fuck you previous dev who worked on this and your stupid lazy ass modifcations on production!
Bleh, already feeling royally pissed, there's only 1 thing I can do, push changes back to git in a seperate branch, and pray I can merge them back in master on my dev environment without to much issues...
Only I first have to get our sysadmi. to allow pushing from a production server back to our git server...
Sigh, going to put on my headphones, retreat to my me space and try to sort out this shitpile now... -
We have a dashboard that does stuff and one of the things that you can do is to turn these devices on or off. I the front-end guy made it look better and added some new visuals from the back-end data for better use. So I wanted to disable the off button if the device is off and vice versa. So I found out that when I turn it off or on let's say on, the device turns on but the data I get from the back-end still shows it to me as off because the data comes from the server and even though a device is on it updates the server about that periodically so I wait 10 seconds for that update.
The back-end guy tells me he just can't do anything about it and that's why it was like that at first. Then a few hours later this guy complains about this little space in between elements. Like dude, if you are such a perfect guy go find a way to make your thing work so the dashboard can have up to date information.2 -
me: this installation needs swap space on server
ops: we don't do swap space on AWS
me: ಠ_ಠ OK, what other solution can you provide me?
ops: here, use this real (bare metal) server we have
me: will it have all the same access and installed packages I had used on the AWS server?
ops: no, you need to create tickets for that
me: ಠ_ಠ -
External Storage recommendation questions.
Im in need of some sort of external storage, either a harddrive or a NAS server, but idk what to get.
Price should be reasonable for the security and storage space it gives, so heres what i figured so far for pros and cons:
NAS Server:
+ Bigger capacity
+ Raid option
+ Easily expandable
+ Always accessible via the network (local)
- Difficult to transport (not gonna do that, but still)
- Expensive
- Physically larger
- Consumes power 24/7 (i dont pay for power currently)
Harddrive:
+ Easy to pack away and transport
+ Cheaper
- If drive fails, youre fucked
- If you want larger capacity, you end up with two external backups
What do you guys do? Im not sure what i should do :i
Any advice is appreciated.
It will be used for external backup, as mentioned. For my server and my own pc.12 -
I have set up a VM on Azure as a small build server - nothing fancy yet, just being able to manually build LineageOS. I only spin it up when I need it, so when I do, I can assign quite a beefy machine and that's all fine. But: It needs a lot of hard drive space and the additional data disk needs to be paid 24/7, whether the VM is up or not. As such, it is eating up my (free MSDN) credits. I am not too well versed with Azure yet, so maybe there is a better way.
Does anybody know a cheap way to get a large-ish SSD on Azure? Maybe with ephemeral OS disks, potentially running on another (small) VM in the same network and sharing it? -
I build an video-course platform on a VPS. But the videos uploaded are filling up its space really fast.
Am I doing it wrong? What would you choose to host the videos?
4 -
My current "file/media server" is a crappy old falling apart windows box with a stupid mismash of internal and external drives with no redundancy. That sucks for a number of reasons, so planning on dropping around a grand or so (including drives) on doing it properly.
Space requirement would be around 20TB-ish of usable space, with 1 disk's worth of redundancy. That can include a newish 5TB drive I have lying around however. Would also run either Plex / Jellyfin, so some horsepower for transcoding would be nice (but no need for more than a single 1080 stream at once.) 24/7 operation, so don't want anything too power hungry.
Current (loose) thinking on the hardware side is an AM4 board and a reasonably low end CPU, 3x8TB WD golds. Software side, probably CentOS, then mergerfs + snapraid. Anyone got any insight as to other options? Hardware not my speciality in particular, so open to suggestions.14 -
Considering using a node.js based library for a simple interface on an embedded ARM system. I have zero experience with node.js. At the very least I will use this as a test rig outside of the embedded system.
How much space will a minimal node.js server take?
Note: If its in the gigs my guess is this will be too large for our system.10 -
Fuck! After spending the day playing shit with our servers FS to extract more space, I had to restart the servers for the changes to be applied all this because of a shitty architecture and a minor desire from the management!
The ssh server didn't start with the server, what am I supposed to do now..4 -
Something on my server suddenly ate away all the hdd space. Like, 300gb in a few days. Nice. Now I have to investigate that instead of doing my work..4
-
Someone asked me to check on his Wordpress site. Can't upload media. 'Failure to write to disk' Updating fails too. Directory and file permissions are ok. Server has enough space. Cleared tmp. Any more ideas?8
-
Okay, I hope a few people can help me with this; what are the benefits/reasons to use MS technologies? I'm talking about .NET, ASP, Windows Server, Powershell...
I've never understood it. I love Nodejs because you don't have any packages unless you ask for them. Alpine Linux is amazing! It runs on 8MB of RAM from fresh and doesn't need much more space to install.
You want .NET core? 140MB download. You're configuring database connection strings? Feel free to type in whatever you like, it'll parse and replace with some magic variables that have come from some other random file.
I was using Powershell recently, needed to set an env variable. Bash is happy with "export name=value". You want to do that in Powershell? I just googled it and found an entire 40-minute read discussing how to set env vars. Why?! It should be one command, and I don't know who thought that "Get-ChildItem" was _obviously_ referring to env variables.
It seems to me that everywhere MS has got their hands on development-wise, it inherits the typical sales bullshit. No no, you can't call them "websockets", they have to be branded "SignalR" and add tons of overhead. You can't say "disable notifications" it has to be "focus assist". I'm really surprised something as simple as a keyboard hasn't become a "varied user input device" or something of the like.
Am I alone in thinking this?4 -
I have a server that's is happy being full. Well atleast that's how I think of it ... I deleted all the logs and anything I thought was taking up space the server will go from 93GB space ussd out of 120Gb. To 119GB used in least than 10 minutes... am tired I fell like just turn it off physically in the server room and going to sleep .. f%$$%k this . I have cleared logs like 10 times now4
-
-- Have you ever self hosted a Linux/Free Bsd server at home?
-- What was the maintenance like in terms of operation and cost compared to an online service?
I and my partner are planning to self host our Ubuntu server locally because currently though we spend less than $1100 a month on Azure with moderate CPU usage but we plan to scale out with believes that the server cost might sky-rocket.
We made a budget of $25k for the setup which includes cost of hardware, bandwidth and power.
We also made some research concerning most used hardwares for home servers because we really are newbees talk of hardware. What we found are options related to the Intel Xeon as CPU, some others say use NAS, while some are more of advertising.
$25k on the desk,
we care more about speed than of space. How can we make the setup totally worth it? You don't have to spare us a change, just some headlight and way to go.
Your advice are needed. Thank you.8 -
I am super frustrated and don't have the energy to translate into a general language so here goeas some hinglish venting:
bc bosses ne leni deni kr rkhi hai... itna badhiya relaxed hoke chutti se wapis aaya tha, 2 din me mood ka bhosada kr diya apni harkato se.
yes, bosses , saala systummm chal rha h boss pe boss pe boss ka.
sardi me saare velle huye pade hai to harr aadhe ghnte me meeting le rhe h.
almost saari team ne aukaat dikhai hui hai , koi 5 din ki chutti pe to koi 7 din ki chutti pe, to jo mil rha h bs usi ko pele jaa rhe hai ye ppt ke chode.
mereko ek feature banane ko diya hua h... saala har cheez pehle idhr udhr delegate krke 15 din ke kaam ko 45 din ka bana diya, ab release deadline pass hai to meeting pe meeting rakh rhe h . bhosadiwaalo , meeting rakhne se tumhare baap ka code tumhari maa likhegi?
upr se thand bc.... itti thand me kon tumhare tatte chaatne office jaa rha h? jo jaa rha h usi ko bulao mereko ghr pe rajai me kaam krne do. saala gaand sookh ke aadu ho gyi h thand se, nd inhe fir bhi metro se 2 ghnte lgane ke baad banda office me chahiye . team me bs 7 lund h(technically 5 lund and 2 !lund) nd unke se 5 bahane maar ke ghr pe baithe huye h... ek langoorni manager aa jati h apne boss ke boss ka hilane... nd expect krti hai mai bhi aake saathme hilau. mereko nahi hilana yaar :'(
4 gnte to travel me waste krwa do, parking space maango to bolenge ki tumhara band level kam h, office me inka wifi vpn ke saath apni maa chudata h 2kbps ki speed se . emulator gaand marvate hai, nd fir bhi inhe banda chahiye office me nd feature ready chahiye 2 din me.
agar khud gaand me ungal nahi dete , to inki policies gaand me ungli krti h... saala 9 bje app le saare dev server band... oh maiiyavo din me 5 ghnte meeting rkhne ke baad tumhe lgta h ki koi kaam hua hoga.. nd bande ko khane hugne mootne me bhi 1-2 ghnte chale jaate h ghr pe... ek to tumhara time waste ko compensate krna chah rha hu apni marzi se raat me kaam krke, but tumhari gaand me usse bhi keede hai... to rote raho bc. meri jhaat tumhe degi festure banake Christmas se pehle.. bhupp
saala kachha utaar ke khol ke baith jaata hu, aake saare bosses ekek krke meri maar lo5
Top Tags
Weekly Rant
View