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f9179b36d3
When galera is used we want a stop to kill off not only the mysqld process but the entire process group created by galera to perform sst or wsrep_notify_cmd.`
174 lines
5.5 KiB
SYSTEMD
174 lines
5.5 KiB
SYSTEMD
# Multi instance version of mariadb. For if you run multiple versions at once.
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# Also used for mariadb@bootstrap to bootstrap Galera.
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#
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# create config file @sysconf2dir@/my{instancename}.cnf
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#
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# start as systemctl start mariadb@{instancename}.server
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# This file is free software; you can redistribute it and/or modify it
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# under the terms of the GNU Lesser General Public License as published by
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# the Free Software Foundation; either version 2.1 of the License, or
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# (at your option) any later version.
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#
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# Thanks to:
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# Daniel Black
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# Erkan Yanar
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# David Strauss
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# and probably others
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# Inspired from https://gitweb.gentoo.org/repo/gentoo.git/tree/dev-db/mysql-init-scripts/files/mysqld_at.service
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[Unit]
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Description=MariaDB @VERSION@ database server (multi-instance)
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Documentation=man:mysqld(8)
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Documentation=https://mariadb.com/kb/en/library/systemd/
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After=network.target
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After=syslog.target
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ConditionPathExists=@sysconf2dir@/my%I.cnf
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[Install]
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WantedBy=multi-user.target
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Alias=mysql.service
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Alias=mysqld.service
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[Service]
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##############################################################################
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## Core requirements
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##
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Type=notify
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# Setting this to true can break replication and the Type=notify settings
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# See also bind-address mysqld option.
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PrivateNetwork=false
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##############################################################################
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## Package maintainers
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##
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User=mysql
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Group=mysql
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# To allow memlock to be used as non-root user if set in configuration
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CapabilityBoundingSet=CAP_IPC_LOCK
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# Prevent writes to /usr, /boot, and /etc
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ProtectSystem=full
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# Doesn't yet work properly with SELinux enabled
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# NoNewPrivileges=true
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PrivateDevices=true
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# Prevent accessing /home, /root and /run/user
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ProtectHome=true
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# Execute pre and post scripts as root, otherwise it does it as User=
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PermissionsStartOnly=true
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# Perform automatic wsrep recovery. When server is started without wsrep,
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# galera_recovery simply returns an empty string. In any case, however,
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# the script is not expected to return with a non-zero status.
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# It is always safe to unset _WSREP_START_POSITION%I environment variable.
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# Do not panic if galera_recovery script is not available. (MDEV-10538)
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ExecStartPre=/bin/sh -c "systemctl unset-environment _WSREP_START_POSITION%I"
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ExecStartPre=/bin/sh -c "[ ! -e @bindir@/galera_recovery ] && VAR= || \
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VAR=`@bindir@/galera_recovery --defaults-file=@sysconf2dir@/my%I.cnf`; [ $? -eq 0 ] \
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&& systemctl set-environment _WSREP_START_POSITION%I=$VAR || exit 1"
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# Alternate: (remove ConditionPathExists above)
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# use [mysqld.INSTANCENAME] as sections in my.cnf
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#
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#ExecStartPre=/bin/sh -c "[ ! -e @bindir@/galera_recovery ] && VAR= || \
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# VAR=`@bindir@/galera_recovery --defaults-group-suffix=%I`; [ $? -eq 0 ] \
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# && systemctl set-environment _WSREP_START_POSITION%I=$VAR || exit 1"
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# Needed to create system tables etc.
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# ExecStartPre=@scriptdir@/mysql_install_db -u mysql
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# Start main service
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# MYSQLD_OPTS here is for users to set in /etc/systemd/system/mariadb@.service.d/MY_SPECIAL.conf
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# Use the [Service] section and Environment="MYSQLD_OPTS=...".
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# This isn't a replacement for my.cnf.
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# _WSREP_NEW_CLUSTER is for the exclusive use of the script galera_new_cluster
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# Note: Place $MYSQLD_OPTS at the very end for its options to take precedence.
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ExecStart=@sbindir@/mysqld --defaults-file=@sysconf2dir@/my%I.cnf \
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$_WSREP_NEW_CLUSTER $_WSREP_START_POSITION%I $MYSQLD_OPTS
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# Alternate: (remove ConditionPathExists above)
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# use [mysqld.INSTANCENAME] as sections in my.cnf
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#
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# ExecStart=@sbindir@/mysqld --defaults-group-suffix=%I \
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# $_WSREP_NEW_CLUSTER $_WSREP_START_POSITION%I $MYSQLD_OPTS
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# Unset _WSREP_START_POSITION environment variable.
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ExecStartPost=/bin/sh -c "systemctl unset-environment _WSREP_START_POSITION%I"
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KillSignal=SIGTERM
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# Don't want to see an automated SIGKILL ever
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SendSIGKILL=no
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# Restart crashed server only, on-failure would also restart, for example, when
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# my.cnf contains unknown option
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Restart=on-abort
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RestartSec=5s
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UMask=007
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##############################################################################
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## USERs can override
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##
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##
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## by creating a file in /etc/systemd/system/mariadb.service.d/MY_SPECIAL.conf
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## and adding/setting the following below [Service] will override this file's
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## settings.
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# Useful options not previously available in [mysqld_safe]
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# Kernels like killing mysqld when out of memory because its big.
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# Lets temper that preference a little.
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# OOMScoreAdjust=-600
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# Explicitly start with high IO priority
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# BlockIOWeight=1000
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# If you don't use the /tmp directory for SELECT ... OUTFILE and
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# LOAD DATA INFILE you can enable PrivateTmp=true for a little more security.
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PrivateTmp=false
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##
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## Options previously available to be set via [mysqld_safe]
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## that now needs to be set by systemd config files as mysqld_safe
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## isn't executed.
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##
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# Number of files limit. previously [mysqld_safe] open-file-limit
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LimitNOFILE=16364
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# Maximium core size. previously [mysqld_safe] core-file-size
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# LimitCore=
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# Nice priority. previously [mysqld_safe] nice
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# Nice=-5
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# Timezone. previously [mysqld_safe] timezone
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# Environment="TZ=UTC"
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# Library substitutions. previously [mysqld_safe] malloc-lib with explicit paths
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# (in LD_LIBRARY_PATH) and library name (in LD_PRELOAD).
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# Environment="LD_LIBRARY_PATH=/path1 /path2" "LD_PRELOAD=
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# Flush caches. previously [mysqld_safe] flush-caches=1
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# ExecStartPre=sync
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# ExecStartPre=sysctl -q -w vm.drop_caches=3
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# numa-interleave=1 equalivant
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# Change ExecStart=numactl --interleave=all @sbindir@/mysqld......
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# crash-script equalivent
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# FailureAction=
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