Sysadmin Mega Thread

zlynx · May 13, 2020, 6:02pm

I’ve had a few Linux game problems here and there with Proton versions or installing the right set of Vulkan libraries, but nothing that GPU monitoring would have helped.

SgtAwesomesauce · May 14, 2020, 12:17am

My offsite backups are now 5TB in size. Time to prune them back a bit…

fires up linode instance for processing

cdoublejj · May 14, 2020, 3:44am

fry

Been trying to figure out lancache and it’s very … uh … not…

Well i’m not sure i can find words for LanCache. It’s great in concept but, MY GOD the installation AND the manual assumes sooo many things. I’m not sure it can accommodate storing cache on seperate drive or share!?

anyone here think they could help me figure out LanCache?

…going to RTFM yet again…

nx2l · May 14, 2020, 10:24am

Previously called steamcache?

Dynamic_Gravity · May 14, 2020, 12:21pm

Yeah they changed the name.

nx2l · May 14, 2020, 12:29pm

have you looked at the guide here on the forum?

Guide - steamcache on Centos7/podman Wikis & How-to Guides

Preface: I write this guide from POV of the root user I wont cover OS install or drive/disk/filesystem setup I am using a file system mounted at /mnt/cached mkdir -p /mnt/cached/cache/{riot,origin,blizzard,steam}/{data,logs} I set selinux on that directory: semanage fcontext -a -t container_file_t ‘/mnt/cached(/.*)?’ The number of IP addresses you need to use can vary. If only doing steamcache: two Ip addresses should be enough Be sure to use whatever you desire for your upstream dns * Step one: install Centos7 (minimal) Step two: setup static networking vim /etc/sysconfig/network-scripts/ifcfg-eth0 nmcli con reload && nmcli con up eth0 ip add or nmtui nmcli con reload && nmcli con up eth0 ip add Step three: install packages and updates yum install vim bash-completion setroubleshoot epel-release net-snmp && yum upgrade shutdown -r +4 wait for reboot yum install podman Step four: scripts Create three executable scripts from the below text Edit them if you have different IP’s or are using a different folder/mount point. The first two should be all you need, unless you need to cleanup and start over. #!/bin/bash # Steam sudo podman run \ --restart always -d \ --name steam-cache \ -v /mnt/cached/cache/steam/data:/data/cache \ -v /mnt/cached/cache/steam/logs:/data/logs \ -p 192.168.0.50:80:80 \ lancachenet/generic:latest #Origin sudo podman run \ --restart always -d \ --name origin-cache \ -v /mnt/cached/cache/origin/data:/data/cache \ -v /mnt/cached/cache/origin/logs:/data/logs \ -p 192.168.0.51:80:80 \ lancachenet/generic:latest #Blizzard / Battle.net sudo podman run \ --restart always -d \ --name blizzard-cache \ -v /mnt/cached/cache/blizzard/data:/data/cache \ -v /mnt/cached/cache/blizzard/logs:/data/logs \ -p 192.168.0.52:80:80 \ lancachenet/generic:latest #Riot Games sudo podman run \ --restart always -d \ --name riot-cache \ -v /mnt/cached/cache/riot/data:/data/cache \ -v /mnt/cached/cache/riot/logs:/data/logs \ -p …

Dynamic_Gravity · May 14, 2020, 1:08pm

@nx2l since podman is basically 1:1 to docker do you think it would be possible to use it for GitLab runners?

nx2l · May 14, 2020, 1:19pm

I am unfamiliar with this term

Dynamic_Gravity · May 14, 2020, 1:21pm

It’s for their built in CI/CD pipeline. A runner can be configured to use docker, so what I am assuming is they could theoretically also use podman.

nx2l · May 14, 2020, 1:24pm

should be… i did notice the restart option names changed coming from docker to podman, but otherwise I just replaced docker with podman in the command

SgtAwesomesauce · May 14, 2020, 4:26pm

As long as you mount /var/run/docker.sock, probably.

There’s also this guide I found from a quick google:

https://tech.immerda.ch/2019/10/gitlab-ci-with-podman/

Dynamic_Gravity · May 14, 2020, 9:38pm

Putting them threads to work

Server is doing F@H in a virtual machine allocated 8 cores, and the rest is doing a H264 encode.

@oO.o

That heatsink is doing a good job keeping this beast cool. The fans are currently at 38%.

SgtAwesomesauce · May 15, 2020, 9:34pm

Question for those familiar with flash memory. I cooked the SLOG and cache SSDs on my zpool this week. They’re down to 50MB/s sequential write. Can someone recommend a high-endurance replacement either 240 or 480GB? Ideally, I’d like to see somewhere around 1GB/s sequential. I also have no idea what I’m willing to pay since I don’t really know exactly what I’m getting myself into… I know this isn’t really the ideal amount of info, the issue is that I’m pretty out of the game lately.

nx2l · May 15, 2020, 10:21pm

what were the old slog/cache devices?

how old were they?

I use an optane 905p… its been a few months since I last checked the smartmon data… but its over a year old now…

mutation666 · May 15, 2020, 11:39pm

I second optane for endurance and speed

2bitmarksman · May 16, 2020, 12:40am

SATA, SAS, M.2, or addin card?

SgtAwesomesauce · May 16, 2020, 5:40am

970 evos 250GB each

2ish years?

either m.2 or PCIe. Preferably PCIe.

nx2l · May 16, 2020, 11:42am

Almost 17000 hours
available spare 100%
1.5 billion write commands

SgtAwesomesauce · May 16, 2020, 6:58pm

Hmmm, that’s impressive. But damn, I wasn’t hoping to spend that much…

I guess high-wear-level flash is expensive though.

nx2l · May 16, 2020, 8:52pm

The title of this just caught my eye…