fa6ea0b137
mysqld_safe is the recommended way to start the server on non-systemd systems ([1]). For instance, it has a crash detection with auto-restart function, can update ulimits, setup core files, set the niceness of the server etc. It looks like it could also be helpful when trying to set up clusters. It's maintained upstream and adding it means we don't need to add these features into our init script. mysqld_safe is a script itself, so it's added to conffiles in case users want to edit it. It can't be run under procd, so the init script is converted to a normal System V type. To stop the server and to reload the privileges tables mysqladmin is used. To that end mysqladmin is moved into the server package. While changing the init script, the Debian init script was used for ideas. It wasn't copied verbatim and adapted a bit here and there. Thanks to whoever wrote it! This commit removes the support for starting the service as a user other than "mariadb". This makes the init script simpler. If anybody wants to play around with the user then it's up to them to fix the permissions. [1] https://mariadb.com/kb/en/mysqld_safe/ Signed-off-by: Sebastian Kemper <sebastian_ml@gmx.net>
146 lines
2.8 KiB
Bash
146 lines
2.8 KiB
Bash
#!/bin/sh /etc/rc.common
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# Copyright (C) 2010-2018 OpenWrt.org
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START=95
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STOP=10
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NAME=mysqld
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LOGGER="/usr/bin/logger -p user.err -s -t $NAME --"
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MYSQLADMIN=/usr/bin/mysqladmin
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MYSQLD=/usr/bin/$NAME
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MYSQLDSAFE=/usr/bin/mysqld_safe
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# mysqladmin likes to read /root/.my.cnf which could cause issues.
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export HOME=/etc/mysql
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# Safeguard (relative paths, core dumps...)
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cd /
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mysqld_get_param() {
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$MYSQLD --print-defaults \
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| tr " " "\n" \
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| grep -- "--$1" \
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| tail -n 1 \
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| cut -d= -f2
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}
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# Checks if a server is running and accessible.
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#
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# check_alive insists on a pingable server
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# check_dead also fails if there is a lost mysqld in the process list
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#
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# Usage: boolean mysqld_status [check_alive|check_dead]
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mysqld_status() {
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if $MYSQLADMIN ping >/dev/null 2>&1; then
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ping_alive=1
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else
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ping_alive=0
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fi
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ps_alive=0
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pidfile=$(mysqld_get_param pid-file)
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if [ -f "$pidfile" ] && kill -0 $(cat "$pidfile") >/dev/null 2>&1; then
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ps_alive=1
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fi
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if { [ "$1" = check_alive ] && [ $ping_alive = 1 ]; } || \
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{ [ "$1" = check_dead ] && [ $ping_alive = 0 ] \
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&& [ $ps_alive = 0 ]; }
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then
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return 0 # EXIT_SUCCESS
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else
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return 1 # EXIT_FAILURE
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fi
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}
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start() {
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conf=/etc/mysql/my.cnf
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logdir=/var/log/mysql
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rundir=/var/run/mysqld
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hint="please fix your server configuration in /etc/mysql/"
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for i in $MYSQLD $MYSQLADMIN $MYSQLDSAFE; do
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if [ ! -x $i ]; then
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$LOGGER $i is missing
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exit 1
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fi
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done
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if [ ! -r $conf ]; then
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$LOGGER $conf cannot be read
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exit 1
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fi
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config_load $NAME
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config_get_bool enabled general enabled 0
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if [ $enabled -eq 0 ]; then
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$LOGGER service not enabled in /etc/config/$NAME
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exit 1
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fi
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config_get options general options
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datadir=$(mysqld_get_param datadir)
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tmpdir=$(mysqld_get_param tmpdir)
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if [ -z "$datadir" ]; then
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$LOGGER datadir is not set
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$LOGGER $hint
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exit 1
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fi
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if [ -z "$tmpdir" ]; then
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$LOGGER tmpdir is not set
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$LOGGER $hint
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exit 1
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fi
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if [ ! -f "$datadir/mysql/tables_priv.MAD" ]; then
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args="--force"
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basedir=$(mysqld_get_param basedir)
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[ -n "$basedir" ] && args="$args --basedir=$basedir"
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$LOGGER Cannot detect privileges table. You might need to run
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$LOGGER \'mysql_install_db "$args"\'
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$LOGGER to initialize the system tables.
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exit 1
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fi
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# Start daemon
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if mysqld_status check_alive; then
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$LOGGER already running
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else
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for i in $logdir $rundir; do
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opts="-m 0750"
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if ! [ -e $i ]; then
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# $rundir needs to be accessible for
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# clients
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if [ $i = $rundir ]; then
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opts=
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fi
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mkdir -p $opts $i
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[ -d $i ] && chown mariadb:mariadb $i
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fi
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done
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$MYSQLDSAFE $options >/dev/null 2>&1 &
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fi
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}
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stop() {
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if ! mysqld_status check_dead; then
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$MYSQLADMIN shutdown
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fi
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}
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reload() {
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if mysqld_status check_alive; then
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$MYSQLADMIN reload
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else
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$LOGGER not running
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fi
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}
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