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Super Soaker Party!
May 4, 2006

He may be a madposter but he's OUR madposter

Bob Morales posted:

If you guys need some network PDU's i got ya

Lovin' this post.

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taqueso
Mar 8, 2004









ok I probably don't want to know but I also have to know - why not choose another way to deal with that capacitor, like removing it or making it smaller or adding a bleeder resistor

Methanar
Sep 26, 2013
ASK ME ABOUT NOT TIPPING DELIVERY DRIVERS, OR ABOUT MY DIET OF CANNED BABY CORN AND CHICKEN NUGGETS

taqueso posted:

ok I probably don't want to know but I also have to know - why not choose another way to deal with that capacitor, like removing it or making it smaller or adding a bleeder resistor

We weren't the hardware manufacturers, just abusing the hardware we did buy.


Methanar posted:


Plan B was to take a pair of pliers and pry off that capacitor. Which had the effect of it always being discharged
This is why in the later-built trays you see the wiring is different and the blue boxes are missing.

Vulture Culture
Jul 14, 2003

I was never enjoying it. I only eat it for the nutrients.


MrMoo posted:

But was the software running on that as bad or worse than the hardware?
you've never seen a more secure Firefox installation

Methanar posted:

The software involved a 1000 line shell script interacting with X11 every 0.1 second forever
This is still the best awful code I have ever written, and the thing in my career that I am most least proud of

Thanks Ants posted:

Which data centre allows you to do that in their halls
They didn't have a problem with the lot of Mean Well power supplies that we bought in bulk off of Alibaba. They did have a problem with our attempts to passively cool the entire rack, because our entire space had no negative pressure and completely hosed up the airflow for customers downstream of us. They ended up making us go back to our mechanical contractor and build cabinet doors end-to-end full of 120mm Panaflo fans

The first run of test infrastructure also sagged because of an oversight in the tray design, so the prototype unit was literally supported by Donald Trump campaign signs that were stolen from the side of the road and cut into strips

Vulture Culture fucked around with this message at 13:52 on May 9, 2020

Methanar
Sep 26, 2013
ASK ME ABOUT NOT TIPPING DELIVERY DRIVERS, OR ABOUT MY DIET OF CANNED BABY CORN AND CHICKEN NUGGETS

Cooling of these racks was a big deal. 720 devices stuck in a rack each with a TDP of 6 watt gets insanely hot.

Early tray designs had this center channel cut out because we thought we needed better airflow.



Unfortunately, the trays were also very densely packed into the rack and and were heavy. A combination of two separate design flaws lead to the trays sagging and resting on top of the tray below. Which was Bad.

One design flaw was that the trays rails for the raid were bolted in with only a single bolt, you can sort of see it here. This meant that when the heavy trays were set in, the rails themselves had a tendency to rotate downwards slightly causing that 1.75 inch RU to become more like 1.5. So we had to redo all of the rails to instead have two bolt slots to prevent that rotation.



The other flaw was having the channel cut out in the middle. With the channel the trays would flex and sag just from the weight. The very first workaround for this was to throw more zipties at the problem and make a bit of a hammock to catch the cable bundle before it interfered with the stuff below it. Sliding the tray into a rack had the tendency of ripping off the pinheaders that connected over the top of the Nvidia boards (the thing necessary to power them on and off with the arduino) because of this. Also they were near impossible to pull out once slid in.



Plan B was to find a more solid bit of structural support. The most readily available such material we could find in 15 minutes was donald trump campaign signs. Solid, wouldn't melt, not made of cardboard, lightweight. So we literally stole a few from the side of the road and fished a bunch out of datacenter dumpsters. They were cut them up and slid over top of the channel and it fixed the problem of the cable bundle drooping until we could get the next batch of trays made.

Methanar fucked around with this message at 17:26 on May 9, 2020

Methanar
Sep 26, 2013
ASK ME ABOUT NOT TIPPING DELIVERY DRIVERS, OR ABOUT MY DIET OF CANNED BABY CORN AND CHICKEN NUGGETS

Vulture Culture posted:

They ended up making us go back to our mechanical contractor and build cabinet doors end-to-end full of 120mm Panaflo fans


Fans that would blow hot air directly into the cold aisle of shopify.

Podima
Nov 4, 2009

You've got the Shine
You've got the power

lomarf


It's May. New thread title time?

Schadenboner
Aug 15, 2011

I MEAN, TURN OFF YOURE MONITOR, MIGTH EXPLAIN YOUR BAD POSTS, HOPE THIS HELPS?!



Podima posted:

It's May. New thread title time?

Working in IT 3.0.1: Pluralsight was free for April

FISHMANPET
Mar 3, 2007

Sweet 'N Sour
Can't
Melt
Steel Beams


Wait so what was the purpose of those bizarre Nvidia rack Mount monstrosities?

Methanar
Sep 26, 2013
ASK ME ABOUT NOT TIPPING DELIVERY DRIVERS, OR ABOUT MY DIET OF CANNED BABY CORN AND CHICKEN NUGGETS

FISHMANPET posted:

Wait so what was the purpose of those bizarre Nvidia rack Mount monstrosities?

watching video with friends

TheParadigm
Dec 10, 2009



Schadenboner posted:

Working in IT 3.0.1: Pluralsight was free for April

Working in IT 3.0.1: May we all work from home forever

Kashuno
Oct 9, 2012

Where the hell is my SWORD?


Grimey Drawer

TheParadigm posted:

Working in IT 3.0.1: May we all work from home forever

Schadenboner
Aug 15, 2011

I MEAN, TURN OFF YOURE MONITOR, MIGTH EXPLAIN YOUR BAD POSTS, HOPE THIS HELPS?!



Working in IT 3.0.1: Maintenance Patches Only During Forever-Virus

George H.W. Cunt
Oct 6, 2010



Podima posted:

Serious Hardware / Software Crap › Working in IT 3.0: Not Remotely Working

Internet Explorer
Jun 1, 2005


Yup, that's it. That's the winner.

CLAM DOWN
Feb 13, 2007


RICKARUS

It's Moot baby!




Podima posted:

Serious Hardware / Software Crap › Working in IT 3.0: Not Remotely Working

Done

Super Soaker Party!
May 4, 2006

He may be a madposter but he's OUR madposter

Methanar posted:

watching video with friends

Uh, special crystal charging friends? I thought you worked for a porn site.

Rexxed
May 1, 2010

Dis is amazing!
I gotta try dis!



Super Soaker Party! posted:

Uh, special crystal charging friends? I thought you worked for a porn site.

When these came up on the ServeTheHome hot deals forum the rumor is that they were from rabb.it:
https://en.wikipedia.org/wiki/Rabb.it

That's a lot of hardware for $300 but you've gotta have a really specific use case, I guess.

Methanar
Sep 26, 2013
ASK ME ABOUT NOT TIPPING DELIVERY DRIVERS, OR ABOUT MY DIET OF CANNED BABY CORN AND CHICKEN NUGGETS

Super Soaker Party! posted:

Uh, special crystal charging friends? I thought you worked for a porn site.

You could watch whatever type of video you wanted with your friends

Methanar
Sep 26, 2013
ASK ME ABOUT NOT TIPPING DELIVERY DRIVERS, OR ABOUT MY DIET OF CANNED BABY CORN AND CHICKEN NUGGETS

Also notice that there isn't any kind of persistent storage on those trays for the NUCs.

It was impressively hacky to get 720 devices per rack pxe booting to nfs root filesystems.

I had a nasty shell script that would scrape the arp table of the top of rack switch to get a list of all mac addresses and the physical tray they were on (tray 1 = port 1) which were used for templating out dhcpd.conf entries and tftp configs for each device. Then we'd have a whole bunch of zfs-backed filesystems we'd clone out and let the devices mount as their root fs. All keyed by mac address of the device since that was the only real piece of identifying information available before bootstrapping.

The Iron Rose
May 12, 2012

Cat Army


can i get a quick resume check? I have an phone screen tomorrow afternoon for a security engineer position I really want and I have till noon to submit my resume.

https://1drv.ms/b/s!Avct7YQ-auOFgcM1LANwNlrcwelTFQ


also methanar that project is easily one of the most impressive things i've seen posted in this thread in the last few years, drat

Proteus Jones
Feb 28, 2013





The Iron Rose posted:

can i get a quick resume check? I have an phone screen tomorrow afternoon for a security engineer position I really want and I have till noon to submit my resume.

https://1drv.ms/b/s!Avct7YQ-auOFgcM1LANwNlrcwelTFQ


also methanar that project is easily one of the most impressive things i've seen posted in this thread in the last few years, drat

I know this is cutting it fine time-wise, but I see a lot of "what you know" and not much on "what you've done".

When I'm looking at resumes/CVs, I like to see what projects have been worked on. Have you materially impacted the implementation in any way (say you were the lead on Project X which was done to achieve Y). Did you realize the objectives of the projects (saved X man-hours per week/month/year leading to a cost savings of Y). Numbers are impressive.

For example: "Building custom automation scripts with Bash, PowerShell, Python, RESTful APIs". So what practical application of this have you done? Tell me what you did as well why you did it and what the overall result was.

I also like to see these broken down by work history. It gives me an idea of overall progression in your career.

It's likely time for you to move to adding another page (or two). I have no problem receiving multi-page as long as they are relevant to the position.

I'd prune anything you think may be irrelevant to the job you are applying for. In the past I've more or less customized my resume to highlight my history and knowledge that matches up with the job listing.

Finally format: I like to see work history up front with relevant bullet points for each. Followed by any additional 'what you know' you think is important and any education/certifications at the end. (and the standard references upon request at the very end)

Proteus Jones fucked around with this message at 23:45 on May 10, 2020

cheque_some
Dec 6, 2006
The Wizard of Menlo Park

Proteus Jones posted:

I know this is cutting it fine time-wise, but I see a lot of "what you know" and not much on "what you've done".

When I'm looking at resumes/CVs, I like to see what projects have been worked on. Have you materially impacted the implementation in any way (say you were the lead on Project X which was done to achieve Y). Did you realize the objectives of the projects (saved X man-hours per week/month/year leading to a cost savings of Y). Numbers are impressive.

For example: "Building custom automation scripts with Bash, PowerShell, Python, RESTful APIs". So what practical application of this have you done? Tell me what you did as well why you did it and what the overall result was.

I also like to see these broken down by work history. It gives me an idea of overall progression in your career.

It's likely time for you to move to adding another page (or two). I have no problem receiving multi-page as long as they are relevant to the position.

I'd prune anything you think may be irrelevant to the job you are applying for. In the past I've more or less customized my resume to highlight my history and knowledge that matches up with the job listing.

Finally format: I like to see work history up front with relevant bullet points for each. Followed by any additional 'what you know' you think is important and any education/certifications at the end. (and the standard references upon request at the very end)

I'm going to agree with most of this. Explaining, and showing how you used these skills in your work experience will count for more than just listing them, and I'm more familiar with having the work experience ahead of the "other skills" section.

I would disagree about putting it to two pages if at all possible though. Sometimes it's better to have one page of highly relevant skills that stand out to the recruiter or hiring manager rather than two pages of all your skills and they inadvertantly skim over the ones most relevant to the job.

Good luck!

Methanar
Sep 26, 2013
ASK ME ABOUT NOT TIPPING DELIVERY DRIVERS, OR ABOUT MY DIET OF CANNED BABY CORN AND CHICKEN NUGGETS

Proteus Jones posted:

It's likely time for you to move to adding another page (or two).

I'd prune anything you think may be irrelevant to the job you are applying for

cheque_some posted:

I would disagree about putting it to two pages if at all possible though

When I was interviewing I had a longform resume that for each job I'd customize by removing parts that seemed irrelevant for the given posting.

Methanar fucked around with this message at 02:32 on May 11, 2020

The Iron Rose
May 12, 2012

Cat Army


thanks folks, y'all are the best!

made a bunch of changes. it's a bit more than 1 page now, but all the most relevant stuff is on page 1

https://1drv.ms/w/s!Avct7YQ-auOFgcM...FqLLAw?e=eY35Gd

vv implemented the below bit, the rest of the proofreading can wait till tomorrow. thanks again! Also I'm 24 so alas, 4 years and change is all I got! Kinda exciting to think about how much cool tech I'll get to play with in the next forty years or so though.

The Iron Rose fucked around with this message at 03:14 on May 11, 2020

Proteus Jones
Feb 28, 2013





The Iron Rose posted:

thanks folks, y'all are the best!

made a bunch of changes. it's a bit more than 1 page now, but all the most relevant stuff is on page 1

https://1drv.ms/b/s!Avct7YQ-auOFgcM1LANwNlrcwelTFQ

That looks so much more impressive now.

One nit. Change

quote:

Buildinga secure, production-grade SAML auth based Cisco AnyConnect VPN, currently with 100% uptime, within 3 hours of touching a Cisco ASA for the first time
to this

quote:

Building a secure, SAML auth based Cisco AnyConnect VPN on $DATE, which has experienced zero downtime since entering service.

"within 3 hours of touching..." gives off a real "where angels fear to tread" vibe and could turn off some shops with a more conservative mindset. It may be something you can bring up organically in the course of the interview. You'll have a better feel at that point. I'd definitely leave the "production-grade" off as it implies it wasn't an official project used in a production environment.

You have the space, so I'd add any other work experience even it's just brief entry level/internship stuff. Most places would expect 10-ish years of general stuff. If you're relatively young in either age or IT experience it's not as important.

Definitely give it another eyeball for typos, things like missing spaces between words (like I found in my example), and using homonyms (there/they're/their) by accident. But wait until tomorrow AM if you can to do it. Too fresh and your mind can elide over that stuff.

NPR Journalizard
Feb 14, 2008



Proteus Jones posted:

Definitely give it another eyeball for typos, things like missing spaces between words (like I found in my example), and using homonyms (there/they're/their) by accident. But wait until tomorrow AM if you can to do it. Too fresh and your mind can elide over that stuff.
I used to run text like this through grammerly and it picked up a bunch of stuff.

Antigravitas
Dec 8, 2019

Outside Context Problem


Dear Diary,

I moved my workstation and everything related to it into a spare room. I should have done this much, much sooner.

For some reason, even though I moved every device, I now have about half of the cables i pulled out of the rats nest as leftovers. This is some weird poo poo.

Also, the room has horrible acoustics. It's basically unfurnished, wooden floorboards, naked walls 2.8m high, 2.3x4.2m. My mechanical keyboard sounds like the SATAN typing.

So I did what any reasonable person would do and spent 100€ on acoustic foam. Apparently BASOTECT is the hottest poo poo so I bought a 2 m² of 7cm thick foam. Let's see if it helps…

Antigravitas
Dec 8, 2019

Outside Context Problem


Also I solved a bunch of tickets that I caused by typoing a subnet, so I was actually doing actual work!

GreenNight
Feb 19, 2006
Turning the light on the darkest places, you and I know we got to face this now. We got to face this now.

Antigravitas posted:

Also I solved a bunch of tickets that I caused by typoing a subnet, so I was actually doing actual work!

It's real work when you resolve 50 tickets on fuckups you yourself did.

skipdogg
Nov 29, 2004
Resident SRT-4 Expert


Antigravitas posted:

Also I solved a bunch of tickets that I caused by typoing a subnet, so I was actually doing actual work!

Metrics are gonna look awesome

GnarlyCharlie4u
Sep 23, 2007

I have an unhealthy obsession with motorcycles.

Proof


Antigravitas posted:

Dear Diary,

I moved my workstation and everything related to it into a spare room. I should have done this much, much sooner.

For some reason, even though I moved every device, I now have about half of the cables i pulled out of the rats nest as leftovers. This is some weird poo poo.

Also, the room has horrible acoustics. It's basically unfurnished, wooden floorboards, naked walls 2.8m high, 2.3x4.2m. My mechanical keyboard sounds like the SATAN typing.

So I did what any reasonable person would do and spent 100€ on acoustic foam. Apparently BASOTECT is the hottest poo poo so I bought a 2 m² of 7cm thick foam. Let's see if it helps…

Yeah that poo poo is great but it is expensiiiiiiive.
It is really neat stuff though.
https://www.youtube.com/watch?v=0tyABDoIexI

For about what you spent on a single block of that foam (maybe a little more depending on what fabric you cover it with) you could have built six 4'x3' panels that are 3" thick stuffed with Roxul.

Antigravitas
Dec 8, 2019

Outside Context Problem


I'll see if I have to construct wool stuff later. For now I have two bags of old clothes sitting in the corners to take some of the bass out.

My mic didn't pick up my typing this loud before, but now I'm sitting between two naked walls and I sound like the angriest typist on the planet. Like, so angry I'd bash your head in with my keyboard, then type your obituary with it. Because it's Hitler's Buzzsaw Keyboard and I can do that. I'm barely exaggerating.

Thanks Ants
May 21, 2004

Bless You Ants, Blants



I've bought stuff from these people before, they can make you nice cloud shapes

https://www.woollyshepherd.co.uk/our-products/

CloFan
Nov 5, 2004







Fun Shoe

80% of my server infra was installed over a decade ago, and virtualization is a foreign concept here. We don't have a huge workload, so I'm looking at Hyperconvergence..

Have any of you ever used Scale Computing? https://www.scalecomputing.com/ I met them at a conference last year and was real impressed by their product and all their customers that I spoke with had nothing but good things to say.

kensei
Dec 27, 2007

He has come home, where he belongs. The Ancient Mariner returns to lead his first team to glory, forever and ever. Amen!



CloFan posted:

80% of my server infra was installed over a decade ago, and virtualization is a foreign concept here. We don't have a huge workload, so I'm looking at Hyperconvergence..

Have any of you ever used Scale Computing? https://www.scalecomputing.com/ I met them at a conference last year and was real impressed by their product and all their customers that I spoke with had nothing but good things to say.

I deployed it multiple times at a previous job, good stuff. As far as I know they are still using it and it's going well

Sickening
Jul 15, 2007

Black summer was the best summer.

I am becoming jaded in projects much easier than normal. I was in a meeting today where someone setup a bunch of K8s for things that could be handled by some loving lambda functions. It even has a virtual machine in the build to facilitate the k8's for incredibly weak reasons. It also has an SQL database. This is for a product that is going into aws. I asked point blank why this product needs SQL and the answer I got was "I know SQL better than the other options". I also heard a person say "I need the messaging bus to be kafka because its the only thing that will work.".

Today I am going offline much earlier than normal.

The Fool
Oct 16, 2003



You have some hilariously bad employees.

Sickening
Jul 15, 2007

Black summer was the best summer.

The Fool posted:

You have some hilariously bad employees.

Its fine. I am pretty blunt in my report. I labeled this as a poo poo show full of needless security risks because the architect and team has an outdated skillset. The devops team lead is backing me up by saying this is a shitshow that will cost way more than it needs to and won't scale for poo poo.

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Methanar
Sep 26, 2013
ASK ME ABOUT NOT TIPPING DELIVERY DRIVERS, OR ABOUT MY DIET OF CANNED BABY CORN AND CHICKEN NUGGETS

Using technologies that the devs are familiar with rather than going hogwild on a nosql db for the sake of it isn't a bad thing.

Why do you care if they use aurora or dynamodb

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