User:Michich/systemd handbook

systemd for users

theory of operation

• initial system setup, manager loop
• units
  • their types
  • dependencies
    • ordering
    • requirement
• jobs
  • types, transactions, installed jobs
• cgroups
• socket activation

usage, detailed

• everything about systemctl
• overriding units, .include
• systemd-cgls
• systemd-analyze

diagnosing problems

• common issues
• increasing verbosity
• log targets
• early shell
• kbrequest
• startup, shutdown

systemd for developers

writing units

• organization of manpages: systemd.unit, systemd.exec, systemd.service, ...
• good practices, note some bad ones
• systemd-tmpfiles, ...

patching daemons

• racy fork+exit
• sd_notify()
• sd_listen_fds()
• password agent

the journal

• what it is, how it works
• journalctl

logind

• what it is, how it works
• loginctl

systemd-nspawn

• example usage