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Re: mysqld_safe and pid files
On Tue, Sep 26, 2017 at 02:20:18PM -0400, Brian Evans wrote:
> On 9/26/2017 2:03 PM, Ruben Safir wrote:
> > hello monty et al
> > i'm trying to write an init script for maria and artix, which is using openrc
> > I got it to start up but the pid-file is a problem and I think that the
> > command line options for mysqld_safe is not working. it doesnt
> > create the specified pid file
> Gentoo's OpenRC startup script does not use mysqld_safe because of such
> We have start-stop-daemon create the pidfile and call mysqld directly
I was considering doing it like that but I realized that would mean
rewritting a significant part of my.conf and combing through mysqld_safe
and try to lock it down as much as monty already has... I trust monty :)
If I do this, I will make it all complaint to the current architecture
and build a package.
I finally got it to work by making a /run/mariadb directory, chowon to
maria.mariadb, and changing the pid file in my.conf and
/etc/init.d/mariadb (using the start-stop-daemon) to /run/mariadb/mariadb.pid
Seems to work for the time being.
> Alternatively, OpenRC's supervise-daemon could be used if one wanted to
> have the server "always available", but I believe that a database crash
> should be investigated by an admin.
100% I'm on board with that.
> > [www3 ~]# tail -f /usr/local/var/www3.err
> > 2017-09-26 10:41:53 139828287336192 [Note] InnoDB: 128 rollback segment(s) are active.
> > 2017-09-26 10:41:53 139828287336192 [Note] InnoDB: Waiting for purge to start
> > 2017-09-26 10:41:53 139828287336192 [Note] InnoDB: Percona XtraDB (http://www.percona.com) 5.6.36-82.0 started; log sequence number 1601111
> > 2017-09-26 10:41:53 139828287336192 [Note] Plugin 'FEEDBACK' is disabled.
> > 2017-09-26 10:41:53 139827658368768 [Note] InnoDB: Dumping buffer pool(s) not yet started
> > 2017-09-26 10:41:53 139828287171328 [Warning] Failed to load slave replication state from table mysql.gtid_slave_pos: 1146: Table 'mysql.gtid_slave_pos' doesn't exist
> > 2017-09-26 10:41:53 139828287336192 [Note] Server socket created on IP: '::'.
> > 2017-09-26 10:41:53 139828286868224 [ERROR] mysqld: Can't create/write to file '/run/mariadb.pid' (Errcode: 13 "Permission denied")
> > 2017-09-26 10:41:53 139828286868224 [ERROR] Can't start server: can't create PID file: Permission denied
> > 170926 10:41:53 mysqld_safe mysqld from pid file /run/mariadb.pid ended
> MySQL and MariaDB attempt to create the pidfile as the user that mysqld
> is running as.. which may be a potential security issue if that user is
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