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Adjust the mysql-log-rotate script in several ways:
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* Use the correct log file pathname for Red Hat installations.
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* Enable creation of the log file by logrotate (needed since
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/var/log/ isn't writable by mysql user); and set the same 640
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permissions we normally use.
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* Comment out the actual rotation commands, so that user must edit
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the file to enable rotation. This is unfortunate, but the fact
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that the script will probably fail without manual configuration
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(to set a root password) means that we can't really have it turned
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on by default. Fortunately, in most configurations the log file
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is low-volume and so rotation is not critical functionality.
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See discussions at RH bugs 799735, 547007
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* Note they are from Fedora 15 / 16
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Update 3/2017
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* it would be big unexpected change for anyone upgrading, if we start shipping it now.
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Maybe it is good candidate for shipping with MariaDB 10.2 ?
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* the 'mysqladmin flush logs' doesn´t guarantee, no entries are lost
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during flushing, the operation is not atomic.
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We should not ship it in that state
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Update 6/2018
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* the SIGHUP causes server to flush all logs. No password admin needed, the only constraint is
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beeing able to send the SIGHUP to the process and read the mysqld pid file, which root can.
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* Submited as PR: https://github.com/MariaDB/server/pull/807
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Update 02/2021
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* Enhance the script as proposed in:
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https://mariadb.com/kb/en/rotating-logs-on-unix-and-linux/
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* Discussion continues in:
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https://jira.mariadb.org/browse/MDEV-16621
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--- mariadb-10.5.8/support-files/mysql-log-rotate.sh 2021-02-12 08:37:47.857289694 +0100
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+++ mariadb-10.5.8/support-files/mysql-log-rotate.sh_pacthed 2021-02-12 08:40:26.420372325 +0100
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@@ -3,35 +3,22 @@
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# in the [mysqld] section as follows:
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#
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# [mysqld]
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-# log-error=@localstatedir@/mysqld.log
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-#
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-# If the root user has a password you have to create a
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-# /root/.my.cnf configuration file with the following
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-# content:
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-#
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-# [mysqladmin]
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-# password = <secret>
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-# user= root
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-#
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-# where "<secret>" is the password.
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-#
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-# ATTENTION: This /root/.my.cnf should be readable ONLY
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-# for root !
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+# log-error=@LOG_LOCATION@
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-@localstatedir@/mysqld.log {
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- # create 600 mysql mysql
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+@LOG_LOCATION@ {
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+ create 600 mysql mysql
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notifempty
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daily
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rotate 3
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missingok
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compress
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+ delaycompress
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+ sharedscripts
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postrotate
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# just if mariadbd is really running
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- if test -x @bindir@/mysqladmin && \
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- @bindir@/mysqladmin ping &>/dev/null
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- then
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- @bindir@/mysqladmin --local flush-error-log \
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- flush-engine-log flush-general-log flush-slow-log
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- fi
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+ if [ -e @PID_FILE_DIR@/@DAEMON_NO_PREFIX@.pid ]
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+ then
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+ kill -1 $(<@PID_FILE_DIR@/@DAEMON_NO_PREFIX@.pid)
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+ fi
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endscript
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}
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