My current job is all Ubuntu LTS, my job before that was all CentOS, and my job before that was a mixture of Debian and FreeBSD.
this post was submitted on 25 Jul 2023
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So basically your resume goes backwards... ;)
Started with RHEL years ago, migrated to CentOS to get away from the license fees etc. Have since moved to Amazon Linux since we subsequently migrated everything to AWS.
I was working as a DWDM technician sometime ago and IIRC most of DWDM hardware (or at least the Infinera ones, as I had used those the most) were actually running on Gentoo, which was kinda surprising for me.
But in "regular" environments I have mainly seen Ubuntu or Debian.
So what are the biggest differences. Or is it mostly the same? Also thanks for the responses!
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I work for a big enterprise, we have RHEL on all our Linux servers save for a few that are SuSe for SAP.
At work: Alpine-based docker containers. Flatcar Container Linux for host VMs.
Personally: Ubuntu Server. Some alpine docker containers.
The default Linux image on AWS (Amazon Linux) is RPM-based; but the default image on Google Cloud currently appears to be Debian "bullseye" (the April 2023 release) with an option for "bookworm" (brand new this month). I'm not sure about Microsoft Azure but their docs suggest a Debian default as well.
So that's one impression. Knowing both dpkg/apt and rpm will serve you well.
Major tech companies have their own internal distributions in their production datacenters, which focus much more on their specific needs. Any major tech company using Linux in datacenters will have an engineering team specifically building what they need.
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I think Ubuntu is the most popular distro in the cloud, at least based on cloud provider metrics. Dockerhub shows like 30 million downloads a week for it regularly, which is a lot compared to most images. Debian would be good to learn as that's what Ubuntu is based on and all the major software with will probably target it. Alpine is good to learn as it's super slim, tends to be used for containers a lot.
I don't use Linux at work (I wish I did), but I default to Ubuntu Server for at-home Docker needs. I might switch to plain Debian at some point.
I recently finished reading a good docker book. They explained why alpine is so great to use: its like 16 MBs or something. I deployed a Minecraft server with it just for fun. Pretty cool. Shrunk the image a good 15 percent from a debian version I believe. Check it out if you want. Have a good one.
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anyone using nixOS?
For production server? No. mostly NixOS is for desktop.
Ansible cover what nixOS doesn't in Debian/RHEL space, and it's idempotent and better than nixOS config. Unless they change their approach for server, I don't see any way in near future it will be massively adopted.