Difference between revisions of "Systemd"

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* systemd-journald: <code>[[journalctl]]</code>
 
* systemd-journald: <code>[[journalctl]]</code>
 
* [[systemd-logind]]: <code>[[loginctl]]</code>
 
* [[systemd-logind]]: <code>[[loginctl]]</code>
* systemd-networkd: <code>[[networkctl]]</code>, [[netplan]]
+
* [[systemd-networkd]]: <code>[[networkctl]]</code>, [[netplan]]
 
* systemd-timesyncd
 
* systemd-timesyncd
 
* systemd-resolved: [[systemd-resolve]], <code>[[hostnamectl]]</code>
 
* systemd-resolved: [[systemd-resolve]], <code>[[hostnamectl]]</code>

Revision as of 16:16, 19 January 2020

systemd is a Linux initialization system and service manager introduced in 2010 and adopted by default in RHEL 7.0, that includes features like:

  • On-demand starting of daemons
  • Inhibitor Locks which allows to block or delay system sleep and shutdown requests from the user [1][2]
  • Mount and automount point maintenance (systemd-mount[3], systemd-umount )
  • Snapshot support
  • Processes tracking using Linux control groups (systemd-cglssystemd-cgtop)
  • Logging daemon, see journalctl and systemd-cat

Config files:

  • /etc/systemd/logind.conf


Systemd components of daemons and binaries[4]:

/lib/systemd/systemd-fsck

See also

  • https://www.freedesktop.org/wiki/Software/systemd/inhibit/
  • http://manpages.ubuntu.com/manpages/bionic/man1/systemd-inhibit.1.html
  • https://www.freedesktop.org/software/systemd/man/systemd.mount.html
  • https://wiki.ubuntu.com/DebuggingSystemd
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