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theperminator
Sep 16, 2009

by Smythe
Fun Shoe

RFC2324 posted:

I guess this is situational, i would use a dns entry for external (since if that dns goes down you have bigger issues)but ip for internal (if that dns goes down the broken connections can cause way worse issues).

I'm the same, even though I've never actually seen a well implemented DNS system crash and burn I'm still paranoid.
If it's something somebody is going to have to use themselves it gets a DNS entry and we use that, if it's a server-server connection i.e vSphere to ESXI Hosts it uses IP.

I guess if everything you have is AD Integrated, DNS somehow breaking really will gently caress up your day but everywhere I've worked has been almost 100% linux with separate auth for production and office stuff.

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theperminator
Sep 16, 2009

by Smythe
Fun Shoe

MC Fruit Stripe posted:

but, gently caress it, let it stay down, I'll ask surprised when it's discovered.

I'm guessing you work in the kind of place where it's usually you who ends up fighting the fires and giving up your life while the shitheels you work with live it up?
I've been there, and I've done that.

theperminator
Sep 16, 2009

by Smythe
Fun Shoe

MC Fruit Stripe posted:

Well I mean here's the thing, I don't really work more hours. In fact by working at home I probably work less. But I just do not understand the mentality of pretending to not see something that you're clearly looking right at. Luckily I don't manage or direct the team so I'm not 100% responsible for it, but I hate these standoffs where it's not going to get done until someone says something.

Yeah, I think people get a certain expectation of those of us who jump on poo poo straight away and don't sleep until an issue is resolved. so they never have and never will have to worry about that poo poo in their minds.

theperminator
Sep 16, 2009

by Smythe
Fun Shoe

Collateral Damage posted:

If there's one thing I've learned in my years as a sysadmin it's that people who should know better still suck at deploying/managing RAID storage systems.

"Our RAID 6 is reporting multiple disks in a pre-fail state, lets replace two drives at once to make it rebuild quicker"

Hell no, I just know that one of the other disks would choose a time during that rebuild to fail.

theperminator
Sep 16, 2009

by Smythe
Fun Shoe

RFC2324 posted:

Can someone explain what is wrong with large RAID 5 arrays? I know that it increases chance of failure, but shouldn't the fault tolerance of RAID 5 counter that?

Even thinking about a Raid 5 rebuild gives me an anxiety attack now... the more data/disks there are the longer and more taxing on the rest of the disks the rebuild will be.

Biggest array I ever built was a RAID 6+0 of 45 4TB drives in a 45Drives Storinator.
3 Groups of 14 in Raid 6, all 3 groups striped together with 3 hotspares.

theperminator
Sep 16, 2009

by Smythe
Fun Shoe

reddit liker posted:

it bothers me when people do stupid command line poo poo

code:
cat file | grep words
ps aux | grep -v grep

The first one at least does something, did you ask what they're thinking with the second?

theperminator
Sep 16, 2009

by Smythe
Fun Shoe

Thanks Ants posted:

Why was that person not escorted out?

They probably got a promotion, they sound like management material.

theperminator
Sep 16, 2009

by Smythe
Fun Shoe
Building management pisses me off, there's a couple of motorcycle parking spaces in the car park, they're big enough to fit two bikes so there's been this unspoken thing where we all make sure to leave room for another bike.

I got in this morning and there's a sign from building management saying that anyone caught doing so will have their access to the garage revoked. wtf...

theperminator
Sep 16, 2009

by Smythe
Fun Shoe
The steelcase leap is better than the Aeron, I had an Aeron for 5 years at my last job and I don't think they're that great tbh.
Tried a Leap & Gesture and they were both awesome.

theperminator
Sep 16, 2009

by Smythe
Fun Shoe

SIR FAT JONY IVES posted:

My old manager used to have a widescreen monitor. He had it set to 4:3 resolution so it was all stretched out. I showed him how to fix it and he argued that it was the right ration before. I ended up googling a picture of a circle and showing him, but he still didn't believe me.

Don't try to help people, they'll just act like that even when it's blindingly obvious they're wrong.
A moron I worked with at my last job for some reason had never heard of tabbed browsing, his task bar was always full of 200 Firefox Windows all the time and took up like 3 inches at the bottom of the screen. And was a "sysadmin" apparently.

theperminator
Sep 16, 2009

by Smythe
Fun Shoe

MC Fruit Stripe posted:

Guy I work with angles for sympathy because his commute is 90 minutes in each direction.

Uh, sorry you don't know how to sell your house or get a new job, I guess?

These people drive me crazy too

"Sorry I'd like to stay back and do X task but I'll miss the last train"

It shits me more that they're allowed to get away with that poo poo. maybe I should just say I moved that far away too.

theperminator
Sep 16, 2009

by Smythe
Fun Shoe
Yeah that sounds all kinds of wrong,
On the physical server I'd have two partitions, one smaller one for the OS of the server itself and a second one to store the VM disks.

For your SQL VM I'd still create a second virtual disk for D: but that will be stored on the same partition as its OS virtual disk on the physical server.

Depending on the performance you're expecting you might want SAS instead of SATA disks too, you're probably better off dealing with a server vendor directly instead, you can generally tell your account manager what you're looking for and they can help you spec up a system without being incompetent like your server guy.

theperminator fucked around with this message at 22:59 on Oct 27, 2015

theperminator
Sep 16, 2009

by Smythe
Fun Shoe

jaegerx posted:

You can't bin/bash rhel7?

This is the procedure but you also need to do an SELinux relabel for it to take effect if I recall.

theperminator
Sep 16, 2009

by Smythe
Fun Shoe

RFC2324 posted:

It really is fun watching people reject the objectively better Win 10 just because the UI got changed and they have to learn something new.

What about the Ads, or the forced updates (their updates are notorious for causing massive issues), uninstalling crap they deem "incompatible", data mining etc.

Not everyone is some mindless sycophant like you.

theperminator
Sep 16, 2009

by Smythe
Fun Shoe

DigitalMocking posted:

Do you spell microsoft using a dollar sign for the s unironically?

Nah I run Windows 8.1 not Linux.

theperminator
Sep 16, 2009

by Smythe
Fun Shoe

RFC2324 posted:

I was guessing OSX

Well yeah I have a macbook but my main pc & work machine are both windows.

Apple are fart huffers too, i.e "The battery life on our new laptops sucks rear end, better remove the time remaining counter from the OS!"

theperminator
Sep 16, 2009

by Smythe
Fun Shoe

MiniFoo posted:

coconutBattery.

Yes, I'm not sure what that has to do with Apple removing a battery meter because they don't like people calling them out for lovely battery life?
They claim it was "innacurate", with all the talent they have they can't "fix" the estimate?

theperminator
Sep 16, 2009

by Smythe
Fun Shoe

RFC2324 posted:

The post install monstrosity I just wrote up. It was originally going to be manually run, but then it occurred to me I can put it in the kickstart so made a couple tweaks(like commenting out the reboot at the end). I still need to go back and clean up the parsing of the nslookup output, maybe change it to dig or get better at awk.

I've used this snippet for IP > DNS mapping in the past
code:
ip -o -4 addr show eth0 | awk -F "[ /]+" '{print $4}' | xargs dig +short -x
Are you working towards provisioning bare-metal? or VMs?

theperminator
Sep 16, 2009

by Smythe
Fun Shoe

flosofl posted:

I'm not sure how it would be in Linux, but in macOS you could use the following to get the interface that has a the default route.
code:
route get default | awk '/interface: / {print $2}'

This doesn't work on centos 7 at least but inspired me, and also answers this

anthonypants posted:

What do you do if the interface isn't eth0?

Given the above inspiration
code:
ip -o -4 ro | sed -rn 's/^.*src ([0-9]+\.[0-9]+\.[0-9]+\.[0-9]+).*$/\1/gp' | xargs dig +short -x
Theres probably a million ways to skin this cat.

:edit: and another much shorter one
code:
ip -4 ro get 1 | awk '{print $NF;exit}' | xargs dig +short -x

theperminator fucked around with this message at 11:35 on Dec 20, 2016

theperminator
Sep 16, 2009

by Smythe
Fun Shoe
You think you're having a bad day?
https://twitter.com/gitlabstatus/status/826591961444384768
Except apparently their backups didn't work?
https://docs.google.com/document/d/1GCK53YDcBWQveod9kfzW-VCxIABGiryG7_z_6jHdVik/pub

theperminator
Sep 16, 2009

by Smythe
Fun Shoe

xzzy posted:

systemd can gently caress right off. At first I hated it because it was different. Now I hate it because I understand it and realize it was designed by self inflated assholes that have no idea what they're doing.

Pretty much, any interaction with any of the morons involved makes it clear that the only knowledge these idiots have of linux servers is that they heard someone vaguely describe what it was.

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theperminator
Sep 16, 2009

by Smythe
Fun Shoe

ptier posted:

I just upgraded a EqualLogic PS6100X Group from Firmware 5.11 to 9.1.1. That was a fun day and half of update one, reboot, update the other, reboot. Is the front end up? No, ok FTP time etc.

The storage guy from Dell told me that the new firmwares will probably interpret the SMART data differently and find drives that are predicted to fail. But only a couple. Ensured that the drive firmware is up to date on the arrays before upgrades. So far one node had thrown 3 drives and the other is getting antsy on one at least. I am so glad I evacuated the drat thing before doing this. Going from X.3 to X.11.. sure from 5.X to 9.X? no thank you.

This is part of a massive scramble to rebuild our ERP system from the poo poo rear end PowerPC Gen 7 AIX 6.2 poo poo to RHEL in a VM Environment. It sucks, but I will do whatever is needed to take that PowerPC box to the firing range.

I feel for you, but you should be glad you stuck with 5.x firmware for so long, at my last job we had a fleet of equallogics to take care of and it honestly shaved years off my life.
7.x firmwares had some horrendous bugs like controllers rebooting after 300 days uptime, or when I did a point release upgrade and the controllers got stuck in a reboot loop for 8 hours until a Dell tech came out. we had clusters that never moved on from 5/6 series firmwares that had no issues for years.

I'm extremely glad I haven't touched that poop in years.

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