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Systemd: Hidden Gems for a Better Linux (tadeubento.com)

submitted 1 year ago by TCB13@lemmy.world to c/linux@lemmy.ml

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After a few conversations with people on Lemmy and other places it became clear to me that most aren't aware of what it can do and how much more robust it is compared to the usual "jankiness" we're used to.

In this article I highlight less known features and give out a few practice examples on how to leverage Systemd to remove tons of redundant packages and processes.

And yes, Systemd does containers. :)

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[-] Quazatron@lemmy.world 18 points 1 year ago

Very interesting article with lots of links that I'm sure to revisit often. I use Linux daily and was not aware of all the possibilities that systemd has to offer.

Some of the cruft I use nowadays to manage Linux machines can be optimized by simply moving over to the systemd equivalent. Of particular interest to me are: triggers, timers, file monitoring, and ntp.

[-] TCB13@lemmy.world 5 points 1 year ago

Thank you. NTP and DNS are the easiest to get into. Simply enable the services and move on.

[-] t0m5k1@lemmy.world 5 points 1 year ago

I stopped using resolved as it tends to ignore what I tell it to do and still grab DNS from the router which I don't want and can't disable on the proprietary router.

openresolv/Resolveconf was never broken in the first place so I'm not sure what systemd was trying to fix with this.

[-] TCB13@lemmy.world 3 points 1 year ago* (last edited 1 year ago)

That's most likely because... you didn't read the manual! :D

FallbackDNS= A space-separated list of IPv4 and IPv6 addresses to use as the fallback DNS servers. Please see DNS= for acceptable format of addresses. Any per-link DNS servers obtained from systemd-networkd.service(8) take precedence over this setting, as do any servers set via DNS= above or /etc/resolv.conf.

Assuming your network is DHCP, edit your config eg. /etc/systemd/network/10-eth0.network:

[DHCPv4]
UseNTP=no
UseDNS=no
UseHostname=no

Your system will not pick NTP and DNS servers and also ignore the hostname provided by the router. Also make sure you ln -sf /run/systemd/resolve/resolv.conf /etc/resolv.conf

https://www.freedesktop.org/software/systemd/man/systemd.network.html#%5BDHCPv4%5D%20Section%20Options

[-] nicman24@kbin.social 1 points 1 year ago

not even that for ntp you just set it with timedatectl

this post was submitted on 10 Aug 2023

327 points (96.6% liked)

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