** Tags added: id-5c53201e63be5660c62cfdcf
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https://bugs.launchpad.net/bugs/1772222
Title:
dangling symlink in /etc/rsyslog.d breaks rsyslogd
Status in rsyslog package in Ubuntu:
New
Status in rsyslog source package in Bionic:
New
Bug description:
Since upgrading from artful to bionic, I noticed that
/var/log/kern.log, etc., were not being updated on my machine.
In comparing to another machine running a fresh install of bionic, I
discovered that this seems to be the culprit:
[agnew(etc)] ls -l /etc/rsyslog.d/99-conjure-up.conf
lrwxrwxrwx 1 root root 45 Jun 14 2017 /etc/rsyslog.d/99-conjure-up.conf ->
/usr/share/conjure-up/conjure-up-rsyslog.conf
[agnew(etc)] ls -l /usr/share/conjure-up/conjure-up-rsyslog.conf
ls: cannot access '/usr/share/conjure-up/conjure-up-rsyslog.conf': No such
file or directory
[agnew(etc)] _
Before deletion:
[agnew(etc)] sudo lsof -n -p $(cat /run/rsyslogd.pid) | grep /var/log
lsof: WARNING: can't stat() fuse.gvfsd-fuse file system /run/user/1000/gvfs
Output information may be incomplete.
[agnew(etc)] _
After deletion:
[agnew(etc)] sudo rm /etc/rsyslog.d/99-conjure-up.conf
[agnew(etc)] sudo service rsyslog restart
[agnew(etc)] sudo lsof -n -p $(cat /run/rsyslogd.pid) | grep /var/log
lsof: WARNING: can't stat() fuse.gvfsd-fuse file system /run/user/1000/gvfs
Output information may be incomplete.
rsyslogd 30686 syslog 8w REG 253,1 22782 15213384
/var/log/syslog
rsyslogd 30686 syslog 9w REG 253,1 2065 15219687
/var/log/auth.log
[agnew(etc)] _
It didn't occur to me to check the service status until writing this
bug report, but in fact it does report the problem on startup:
May 20 14:39:27 agnew rsyslogd[31786]: error during parsing file
/etc/rsyslog.d/postfix.conf, on or before line 1: error accessing config file
or directory '/etc/rsyslog.d/99-conjure
May 20 14:39:27 agnew rsyslogd[31786]: CONFIG ERROR: there are no active
actions configured. Inputs will run, but no output whatsoever is created.
[v8.32.0 try http://www.rsyslog.com
However, it's unlikely this warning will be discovered until it's too
late, if ever -- consider a remote syslogging setup on a machine that
has since been decommissioned or reinstalled -- and so it would
probably better for rsyslogd to cope with dangling symlinks. Indeed,
given the age of the symlink, this is a regression from artful or
earlier.
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