This is page to collect logcheck rules for systemd.

ignore.d.server/systemd:

^\w{3} [ :[:digit:]]{11} [._[:alnum:]-]+ systemd\[[[:digit:]]+\]: (Starting|Started) Session [[:digit:]]+ of user [^[:space:]]+\.$
^\w{3} [ :[:digit:]]{11} [._[:alnum:]-]+ systemd\[1\]: (Reexecuting|Reloading)\.$
^\w{3} [ :[:digit:]]{11} [._[:alnum:]-]+ systemd\[1\]: systemd [[:digit:]]+ running in system mode. \((\+[[:alnum:]]+ ?)+\)$
^\w{3} [ :[:digit:]]{11} [._[:alnum:]-]+ systemd\[1\]: Expecting device [^[:space:]]+\.device\.\.\.$
^\w{3} [ :[:digit:]]{11} [._[:alnum:]-]+ systemd\[1\]: Start(ing|ed) Cleanup of Temporary Directories\.+$
^\w{3} [ :[:digit:]]{11} [._[:alnum:]-]+ systemd\[1\]: Start(ing|ed) Run anacron jobs\.+$
^\w{3} [ :[:digit:]]{11} [._[:alnum:]-]+ systemd-logind\[[[:digit:]]+\]: New session [[:digit:]]+ of user [^[:space:]]+\.$
^\w{3} [ :[:digit:]]{11} [._[:alnum:]-]+ systemd-logind\[[[:digit:]]+\]: Removed session [[:digit:]]+\.$
^\w{3} [ :[:digit:]]{11} [._[:alnum:]-]+ systemd\[[[:digit:]]+\]: Stopping (Timers|Default|Basic System|Paths|Sockets)\.$
^\w{3} [ :[:digit:]]{11} [._[:alnum:]-]+ systemd\[[[:digit:]]+\]: Stopped target (Timers|Default|Basic System|Paths|Sockets)\.$
^\w{3} [ :[:digit:]]{11} [._[:alnum:]-]+ systemd\[[[:digit:]]+\]: Starting (Shutdown|Exit the Session\.\.|Timers|Default|Basic System|Paths|Sockets)\.$
^\w{3} [ :[:digit:]]{11} [._[:alnum:]-]+ systemd\[[[:digit:]]+\]: Reached target (Shutdown|Timers|Default|Basic System|Paths|Sockets)\.$
^\w{3} [ :[:digit:]]{11} [._[:alnum:]-]+ systemd\[[[:digit:]]+\]: Received SIGRTMIN\+24 from PID [[:digit:]]+ \(kill\)\.$
^\w{3} [ :[:digit:]]{11} [._[:alnum:]-]+ systemd\[[[:digit:]]+\]: Startup finished in [[:digit:]]+ms\.$