F20 System Wide Change: No Default Syslog
jreznik at redhat.com
Mon Jul 15 08:44:44 UTC 2013
= Proposed System Wide Change: No Default Syslog =
Change owner(s): Lennart Poettering <lennart at poettering net>, Matthew
Miller <mattdm at fedoraproject org>
No longer install a traditional syslog service by default. (Specifically,
remove rsyslog from the @core or @standard groups in comps.)
The systemd journal will be the default logging solution. Rsyslog, Syslog-NG,
and even traditional sysklogd will continue to cover use cases outside of the
== Detailed description ==
Let's change the default install to no longer install a syslog service by
default — let's remove rsyslog from the "comps" default.
The journal has been around for a few releases and is well tested. F19 already
enabled persistent journal logging on disk, thus all logs have been stored
twice on disk, once in journal files and once in /var/log/messages. This
feature hence recommends no longer installing rsyslog by default, leaving only
the journal in place.
rsyslog will remain the recommended option to install if users require
/var/log/messages, need support for the syslog network protocol, or need to
enforce strict data lifecycle policies. It's sufficient to install and start
rsyslog to get /var/log/messages and BSD syslog support.
Also see previous attempt:  and previous mailing list discussion at 
== Scope ==
Simply remove "rsyslog" from all default install groups in "comps".
Packages which strictly require /var/log/messages to exist might need updating
to gain dependencies on some kind of syslog daemon (but they needed that
before too, so this is mostly just bugfixing that's useful anyway). If any of
the packages in the default install is one of those, we need to look at it in
detail, and find a solution. However, currently no package of the default
install is requiring a syslog implementation.
Some tools such as logcheck might need to be updated to process data from the
journal instead of /var/log/message. This should be fairily easy as
"journalctl" generates the same output as "cat /var/log/messages" previously
Proposal owners: Commit a change to "comps" to remove "rsyslog" from it. Drop
in a file /var/log/README informing users where the log files went, and how do
get to the same data as before.
Other developers: logcheck needs updating to stay useful. It needs to grep
through the output of "journalctl", rather than /var/log/messages.
Release engineering: nothing really.
Policies and guidelines: Guidelines should clarify that /var/log/message
doesn't exist on many systems, but that was already the case before -- so
little changes. QA should add a few tests and release criteria about journal
Note that logrotate should stay in the default install, as it is required to
rotate wtmp and btmp (the journal synchronously rotates before writing and
does not require logrotate for operation).
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