systemctl "enable" doesn't work on symlinked units

[Sergey Gotliv]

I am trying to create mysql database using my Fedora 20 image but I fail to enable mysql on boot.

2014-06-17 05:15:06.110 521 TRACE trove.openstack.common.rpc.amqp ProcessExecutionError: Unexpected error while running command.
2014-06-17 05:15:06.110 521 TRACE trove.openstack.common.rpc.amqp Command: sudo systemctl enable mysqld
2014-06-17 05:15:06.110 521 TRACE trove.openstack.common.rpc.amqp Exit code: 1
2014-06-17 05:15:06.110 521 TRACE trove.openstack.common.rpc.amqp Stdout: ''
2014-06-17 05:15:06.110 521 TRACE trove.openstack.common.rpc.amqp Stderr: 'Failed to issue method call: No such file or directory\n'

The reason for that problem is that mysql on Fedora 20 is actually mariadb and /usr/lib/systemd/system/mysqld.service is a symbolic link to /usr/lib/systemd/system/mariadb.service and currently systemctl limitation is that it's "enable" doesn't work on symlinked inits, see this bug:

https://bugzilla.redhat.com/1014311

start and stop do work for symlinks.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/100504

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/100504
Committed: https://git.openstack.org/cgit/openstack/trove/commit/?id=3482d5f4e6175e9e99e78eeaef6eeb730d6c239a
Submitter: Jenkins
Branch: master

commit 3482d5f4e6175e9e99e78eeaef6eeb730d6c239a
Author: Sergey Gotliv <email address hidden>
Date: Tue Jun 17 14:30:55 2014 +0300

    Fix enable on boot when working with systemd and symlinked units

    mysql on Fedora20 is actually mariadb and /usr/lib/systemd/system/mysqld.service
    is a symbolic link to /usr/lib/systemd/system/mariadb.service. systemctl "enable"
    doesn't work on symlinked inits like described in:

    https://bugzilla.redhat.com/1014311

    So in order to enable mysqld service properly in this case we need to
    replace a service name with the real path to service file.

    Closes-Bug: #1330937
    Change-Id: Id823b3e377c4d0d5f1e5452fad9826232bc1f904