In previous Fedora distros was (IMHO) right way to log only to syslog,
without journald and its (for me) unwanted annoying binary logs, by using
configuration as:
*) Set systemd log target to syslog:
systemd.log_target=syslog (syslog-or-kmsg) ---- on kernel cmdline
systemd.default_standard_output=syslog --/
and
LogTarget=syslog ---- in systemd.conf
DefaultStandardOutput=syslog --/
*) configuring rsyslog to listen on /dev/log unix socket:
$SystemLogSocketName /dev/log ------ in rsyslog.conf
$ModLoad imuxsock ----/
$OmitLocalLogging off ---/
$AddUnixListenSocket /run/systemd/journal/syslog --/(legacy directives)
$AddUnixListenSocket /run/systemd/journal/socket -/
$AddUnixListenSocket /run/systemd/journal/stdout /
(not sure when all last three directives needed)
*) prevent to run journald:
systemctl mask systemd-journald.service
(and maybe mask systemd-journal-flush.service)
And it works fine.
But in actual Fedora 24 in systemd man page values syslog-or-kmsg and
syslog are missing in LogTarget option. As systemd/journald man pages
say hardly anything about exact mean of appropriate configuration for
this purpose, then please when someone more knowledgeable can advise:
- where to direct the systemd output? Maybe to kmsg an then read it in
rsyslog via imklog?
(rsyslog should have also imkmsg module, but is not in rsyslog-8.12.0-3.fc24)
- what about /run/log/journal/.../system.journal ?
On my test F24 system it have open rsyslogd, abrt-dump-journal-oops and
abrt-dump-journal-xorg (no need for these last two) processes. Uses it
also something else?
- what about /run/systemd/journal/{dev-log,socket,stdout} unix sockets?
Should rsyslogd listen on them?
- /dev/log seems be now symlink to /run/systemd/journal/dev-log socket
(as defined by systemd-journald-dev-log.socket) Should it be left
(because now something sends to /run/systemd/journal/dev-log), or can
be /run/systemd/journal/dev-log removed?
Thanks in advance for some clarification about this.
Franta Hanzlik