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377 lines
10 KiB
377 lines
10 KiB
5 months ago
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#!/bin/sh
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# Copyright Abandoned 1996 TCX DataKonsult AB & Monty Program KB & Detron HB
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# This file is public domain and comes with NO WARRANTY of any kind
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# MySQL daemon start/stop script.
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# Usually this is put in /etc/init.d (at least on machines SYSV R4 based
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# systems) and linked to /etc/rc3.d/S99mysql and /etc/rc0.d/K01mysql.
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# When this is done the mysql server will be started when the machine is
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# started and shut down when the systems goes down.
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# Comments to support chkconfig on RedHat Linux
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# chkconfig: 2345 64 36
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# description: A very fast and reliable SQL database engine.
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# Comments to support LSB init script conventions
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### BEGIN INIT INFO
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# Provides: mysql
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# Required-Start: $local_fs $network $remote_fs
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# Should-Start: ypbind nscd ldap ntpd xntpd
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# Required-Stop: $local_fs $network $remote_fs
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# Default-Start: 2 3 4 5
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# Default-Stop: 0 1 6
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# Short-Description: start and stop MySQL
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# Description: MySQL is a very fast and reliable SQL database engine.
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### END INIT INFO
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# If you install MySQL on some other places than @prefix@, then you
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# have to do one of the following things for this script to work:
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#
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# - Run this script from within the MySQL installation directory
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# - Create a /etc/my.cnf file with the following information:
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# [mysqld]
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# basedir=<path-to-mysql-installation-directory>
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# - Add the above to any other configuration file (for example ~/.my.ini)
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# and copy my_print_defaults to /usr/bin
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# - Add the path to the mysql-installation-directory to the basedir variable
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# below.
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#
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# If you want to affect other MySQL variables, you should make your changes
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# in the /etc/my.cnf, ~/.my.cnf or other MySQL configuration files.
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# If you change base dir, you must also change datadir. These may get
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# overwritten by settings in the MySQL configuration files.
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basedir=
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datadir=
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# Default value, in seconds, afterwhich the script should timeout waiting
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# for server start.
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# Value here is overriden by value in my.cnf.
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# 0 means don't wait at all
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# Negative numbers mean to wait indefinitely
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service_startup_timeout=900
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# Lock directory for RedHat / SuSE.
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lockdir='/var/lock/subsys'
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lock_file_path="$lockdir/mysql"
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# The following variables are only set for letting mysql.server find things.
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# Set some defaults
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mysqld_pid_file_path=
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if test -z "$basedir"
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then
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basedir=@prefix@
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bindir=@bindir@
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if test -z "$datadir"
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then
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datadir=@localstatedir@
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fi
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sbindir=@sbindir@
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libexecdir=@sbindir@
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else
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bindir="$basedir/bin"
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if test -z "$datadir"
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then
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datadir="$basedir/data"
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fi
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sbindir="$basedir/sbin"
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libexecdir="$basedir/libexec"
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fi
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# datadir_set is used to determine if datadir was set (and so should be
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# *not* set inside of the --basedir= handler.)
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datadir_set=
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#
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# Use LSB init script functions for printing messages, if possible
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#
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lsb_functions="/lib/lsb/init-functions"
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if test -f $lsb_functions ; then
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. $lsb_functions
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else
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log_success_msg()
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{
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echo " SUCCESS! $@"
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}
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log_failure_msg()
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{
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echo " ERROR! $@"
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}
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fi
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PATH="/sbin:/usr/sbin:/bin:/usr/bin:$basedir/bin"
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export PATH
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mode=$1 # start or stop
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[ $# -ge 1 ] && shift
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other_args="$*" # uncommon, but needed when called from an RPM upgrade action
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# Expected: "--skip-networking --skip-grant-tables"
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# They are not checked here, intentionally, as it is the resposibility
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# of the "spec" file author to give correct arguments only.
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case `echo "testing\c"`,`echo -n testing` in
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*c*,-n*) echo_n= echo_c= ;;
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*c*,*) echo_n=-n echo_c= ;;
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*) echo_n= echo_c='\c' ;;
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esac
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parse_server_arguments() {
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for arg do
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case "$arg" in
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--basedir=*) basedir=`echo "$arg" | sed -e 's/^[^=]*=//'`
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bindir="$basedir/bin"
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if test -z "$datadir_set"; then
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datadir="$basedir/data"
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fi
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sbindir="$basedir/sbin"
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libexecdir="$basedir/libexec"
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;;
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--datadir=*) datadir=`echo "$arg" | sed -e 's/^[^=]*=//'`
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datadir_set=1
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;;
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--pid-file=*) mysqld_pid_file_path=`echo "$arg" | sed -e 's/^[^=]*=//'` ;;
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--service-startup-timeout=*) service_startup_timeout=`echo "$arg" | sed -e 's/^[^=]*=//'` ;;
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esac
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done
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}
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wait_for_pid () {
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verb="$1" # created | removed
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pid="$2" # process ID of the program operating on the pid-file
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pid_file_path="$3" # path to the PID file.
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i=0
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avoid_race_condition="by checking again"
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while test $i -ne $service_startup_timeout ; do
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case "$verb" in
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'created')
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# wait for a PID-file to pop into existence.
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test -s "$pid_file_path" && i='' && break
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;;
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'removed')
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# wait for this PID-file to disappear
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test ! -s "$pid_file_path" && i='' && break
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;;
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*)
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echo "wait_for_pid () usage: wait_for_pid created|removed pid pid_file_path"
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exit 1
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;;
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esac
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# if server isn't running, then pid-file will never be updated
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if test -n "$pid"; then
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if kill -0 "$pid" 2>/dev/null; then
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: # the server still runs
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else
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# The server may have exited between the last pid-file check and now.
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if test -n "$avoid_race_condition"; then
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avoid_race_condition=""
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continue # Check again.
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fi
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# there's nothing that will affect the file.
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log_failure_msg "The server quit without updating PID file ($pid_file_path)."
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return 1 # not waiting any more.
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fi
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fi
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echo $echo_n ".$echo_c"
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i=`expr $i + 1`
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sleep 1
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done
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if test -z "$i" ; then
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log_success_msg
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return 0
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else
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log_failure_msg
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return 1
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fi
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}
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# Get arguments from the my.cnf file,
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# the only group, which is read from now on is [mysqld]
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if test -x "$bindir/my_print_defaults"; then
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print_defaults="$bindir/my_print_defaults"
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else
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# Try to find basedir in /etc/my.cnf
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conf=/etc/my.cnf
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print_defaults=
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if test -r $conf
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then
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subpat='^[^=]*basedir[^=]*=\(.*\)$'
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dirs=`sed -e "/$subpat/!d" -e 's//\1/' $conf`
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for d in $dirs
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do
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d=`echo $d | sed -e 's/[ ]//g'`
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if test -x "$d/bin/my_print_defaults"
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then
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print_defaults="$d/bin/my_print_defaults"
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break
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fi
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done
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fi
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# Hope it's in the PATH ... but I doubt it
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test -z "$print_defaults" && print_defaults="my_print_defaults"
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fi
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#
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# Read defaults file from 'basedir'. If there is no defaults file there
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# check if it's in the old (depricated) place (datadir) and read it from there
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#
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extra_args=""
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if test -r "$basedir/my.cnf"
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then
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extra_args="-e $basedir/my.cnf"
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fi
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parse_server_arguments `$print_defaults $extra_args mysqld server mysql_server mysql.server`
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#
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# Set pid file if not given
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#
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if test -z "$mysqld_pid_file_path"
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then
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mysqld_pid_file_path=$datadir/`hostname`.pid
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else
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case "$mysqld_pid_file_path" in
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/* ) ;;
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* ) mysqld_pid_file_path="$datadir/$mysqld_pid_file_path" ;;
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esac
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fi
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case "$mode" in
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'start')
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# Start daemon
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# Safeguard (relative paths, core dumps..)
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cd $basedir
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echo $echo_n "Starting MySQL"
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if test -x $bindir/mysqld_safe
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then
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# Give extra arguments to mysqld with the my.cnf file. This script
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# may be overwritten at next upgrade.
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$bindir/mysqld_safe --datadir="$datadir" --pid-file="$mysqld_pid_file_path" $other_args >/dev/null &
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wait_for_pid created "$!" "$mysqld_pid_file_path"; return_value=$?
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# Make lock for RedHat / SuSE
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if test -w "$lockdir"
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then
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touch "$lock_file_path"
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fi
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exit $return_value
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else
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log_failure_msg "Couldn't find MySQL server ($bindir/mysqld_safe)"
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fi
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;;
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'stop')
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# Stop daemon. We use a signal here to avoid having to know the
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# root password.
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if test -s "$mysqld_pid_file_path"
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then
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# signal mysqld_safe that it needs to stop
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touch "$mysqld_pid_file_path.shutdown"
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mysqld_pid=`cat "$mysqld_pid_file_path"`
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if (kill -0 $mysqld_pid 2>/dev/null)
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then
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echo $echo_n "Shutting down MySQL"
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kill $mysqld_pid
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# mysqld should remove the pid file when it exits, so wait for it.
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wait_for_pid removed "$mysqld_pid" "$mysqld_pid_file_path"; return_value=$?
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else
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log_failure_msg "MySQL server process #$mysqld_pid is not running!"
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rm "$mysqld_pid_file_path"
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fi
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# Delete lock for RedHat / SuSE
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if test -f "$lock_file_path"
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then
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rm -f "$lock_file_path"
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fi
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exit $return_value
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else
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log_failure_msg "MySQL server PID file could not be found!"
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fi
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;;
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'restart')
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# Stop the service and regardless of whether it was
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# running or not, start it again.
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if $0 stop $other_args; then
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$0 start $other_args
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else
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log_failure_msg "Failed to stop running server, so refusing to try to start."
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exit 1
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fi
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;;
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'reload'|'force-reload')
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if test -s "$mysqld_pid_file_path" ; then
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read mysqld_pid < "$mysqld_pid_file_path"
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kill -HUP $mysqld_pid && log_success_msg "Reloading service MySQL"
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touch "$mysqld_pid_file_path"
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else
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log_failure_msg "MySQL PID file could not be found!"
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exit 1
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fi
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;;
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'status')
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# First, check to see if pid file exists
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if test -s "$mysqld_pid_file_path" ; then
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read mysqld_pid < "$mysqld_pid_file_path"
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if kill -0 $mysqld_pid 2>/dev/null ; then
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log_success_msg "MySQL running ($mysqld_pid)"
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exit 0
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else
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log_failure_msg "MySQL is not running, but PID file exists"
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exit 1
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fi
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else
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# Try to find appropriate mysqld process
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mysqld_pid=`@PIDOF@ $libexecdir/mysqld`
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# test if multiple pids exist
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pid_count=`echo $mysqld_pid | wc -w`
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if test $pid_count -gt 1 ; then
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log_failure_msg "Multiple MySQL running but PID file could not be found ($mysqld_pid)"
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exit 5
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elif test -z $mysqld_pid ; then
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if test -f "$lock_file_path" ; then
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log_failure_msg "MySQL is not running, but lock file ($lock_file_path) exists"
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exit 2
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fi
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log_failure_msg "MySQL is not running"
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exit 3
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else
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log_failure_msg "MySQL is running but PID file could not be found"
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exit 4
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fi
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fi
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;;
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*)
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# usage
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basename=`basename "$0"`
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echo "Usage: $basename {start|stop|restart|reload|force-reload|status} [ MySQL server options ]"
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exit 1
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;;
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esac
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exit 0
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