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804 points jryio | 1 comments | 21 Oct 25 20:28 UTC | HN request time: 0.205s | source

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speedgoose ◴[21 Oct 25 21:12 UTC] No.45661785[source]▶

Looking at the htop screenshot, I notice the lack of swap. You may want to enable earlyoom, so your whole server doesn't go down when a service goes bananas. The Linux Kernel OOM killer is often a bit too late to trigger.

You can also enable zram to compress ram, so you can over-provision like the pros'. A lot of long-running software leaks memory that compresses pretty well.

Here is how I do it on my Hetzner bare-metal servers using Ansible: https://gist.github.com/fungiboletus/794a265cc186e79cd5eb2fe... It also works on VMs.

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RobRivera ◴[22 Oct 25 05:35 UTC] No.45665226[source]▶

>>45661785 #

To learn tricks like this what resource do you recommend I read? System administrators handbook? (Still on my TOREAD queue)

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1. eitland ◴[22 Oct 25 10:41 UTC] No.45667176[source]▶

>>45665226 #

"The practice of System and Network administration" by Tom Limoncelli and Christine Hogan[1] was, together with "Principles of Network and Systems Administration" by Mark Burgess have probably been the books that influenced my approach to sysadmin the most. I still have them. Between them they covered at a high level (at least back when I was sysadmin before devops and Kubernets etc) anything and everything from

- hardware, networks, monitoring, provisioning, server room locations in existing buildings, how to prepare server rooms

- and so on up to hiring and firing sysadmins, salary negotiations[2], vendor negotiations and the first book even had a whole chapter dedicated to "Being happy"

[1] There is a third author as well now, but those two were the ones that are on the cover of my book from 2005 and that I can remember

[2] Has mostly worked well after I more or less left sysadmin behind as well

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