File /server created on startup

[Stefan Pasel]

On startup an empty file /server for user mysql.mysql is created:
-rw-r----- 1 mysql mysql

If there is a directory in place with this name, the directory gets chmodded and the ownership changes (even if the directory is owned by root only)

I have installed Percona-XtraDB-Cluster-server-56 on CentOS 7.x via the official repositories.

The installed version is 5.6.28-25.14.1.el7 , the problem also happened with 5.6.24-25.11.1.el7 on a different setup.

The problem occurs whenever i start or restart the mysql/percona process using systemctl, e.g.
systemctl start <email address hidden> or systemctl start mysql.service

Unfortunately we are using /server already which is leading to nasty problems and we are currently required to always move this directory somewhere else.

It does not matter where i put datadir, basedir or any other path variable.

[Stefan Pasel (pasel)]

I have found a way to work around this issue by setting the log_error var in the mysql cnf.

The problem itself is resulting in the file

/usr/bin/mysql-systemd

The responsible lines are (Lines 48 ff) :

if [ ! -z $log ]; then
        [ -e $log ] || touch $log
        chmod 0640 $log
        chown mysql:mysql $log || exit 1
        if [ -x /usr/sbin/restorecon ]; then
            /usr/sbin/restorecon $log
        fi
    fi

[Shahriyar Rzayev (rzayev-sehriyar)]

Percona now uses JIRA for bug reports so this bug report is migrated to: https://jira.percona.com/browse/PXC-1894