#!/bin/sh # Copyright Abandoned 1996 TCX DataKonsult AB & Monty Program KB & Detron HB # This file is public domain and comes with NO WARRANTY of any kind # MySQL daemon start/stop script. # Usually this is put in /etc/init.d (at least on machines SYSV R4 based # systems) and linked to /etc/rc3.d/S99mysql and /etc/rc0.d/K01mysql. # When this is done the mysql server will be started when the machine is # started and shut down when the systems goes down. # Comments to support chkconfig on RedHat Linux # chkconfig: 2345 11 90 # description: A very fast and reliable SQL database engine. # Comments to support LSB init script conventions ### BEGIN INIT INFO # Provides: mysqld # Required-Start: $local_fs $network $remote_fs # Should-Start: ypbind ldap ntpd # Required-Stop: $local_fs $network $remote_fs # Default-Start: 2 3 4 5 # Default-Stop: 0 1 6 # Short-Description: start and stop MySQL # Description: MySQL is a very fast and reliable SQL database engine. ### END INIT INFO # If you install MySQL on some other places than /usr, then you # have to do one of the following things for this script to work: # # - Run this script from within the MySQL installation directory # - Create a /etc/my.cnf file with the following information: # [mysqld] # basedir=<path-to-mysql-installation-directory> # - Add the above to any other configuration file (for example ~/.my.ini) # and copy my_print_defaults to /usr/bin # - Add the path to the mysql-installation-directory to the basedir variable # below. # # If you want to affect other MySQL variables, you should make your changes # in the /etc/my.cnf, ~/.my.cnf or other MySQL configuration files. # If you change base dir, you must also change datadir. These may get # overwritten by settings in the MySQL configuration files. # Source function library. . /etc/rc.d/init.d/functions basedir=/usr datadir= # Default value, in seconds, afterwhich the script should timeout waiting # for server start. # Value here is overriden by value in my.cnf. # 0 means don't wait at all # Negative numbers mean to wait indefinitely service_startup_timeout=900 # Lock directory for RedHat / SuSE. lockdir='/var/lock/subsys' lock_file_path="$lockdir/mysqld" # The following variables are only set for letting mysql.server find things. # Set some defaults mysqld_pid_file_path= if test -z "$basedir" then basedir=/usr bindir=/usr/bin if test -z "$datadir" then datadir=/var/lib/mysql fi sbindir=/usr/sbin libexecdir=/usr/sbin else bindir="$basedir/bin" if test -z "$datadir" then datadir="$basedir/data" fi sbindir="$basedir/sbin" if test -f "$basedir/bin/mysqld" then libexecdir="$basedir/bin" else libexecdir="$basedir/libexec" fi fi # datadir_set is used to determine if datadir was set (and so should be # *not* set inside of the --basedir= handler.) datadir_set= # # Use LSB init script functions for printing messages, if possible # lsb_functions="/lib/lsb/init-functions" if test -f $lsb_functions ; then . $lsb_functions else log_success_msg() { echo " SUCCESS! $@" } log_failure_msg() { echo " ERROR! $@" } fi # Source mysql configuration. [ -f /etc/sysconfig/mysqld ] && . /etc/sysconfig/mysqld PATH="/sbin:/usr/sbin:/bin:/usr/bin:$basedir/bin" export PATH mode=$1 # start or stop [ $# -ge 1 ] && shift other_args="$*" # uncommon, but needed when called from an RPM upgrade action # Expected: "--skip-networking --skip-grant-tables" # They are not checked here, intentionally, as it is the resposibility # of the "spec" file author to give correct arguments only. case `echo "testing\c"`,`echo -n testing` in *c*,-n*) echo_n= echo_c= ;; *c*,*) echo_n=-n echo_c= ;; *) echo_n= echo_c='\c' ;; esac parse_server_arguments() { for arg do case "$arg" in --basedir=*) basedir=`echo "$arg" | sed -e 's/^[^=]*=//'` bindir="/usr/bin" if test -z "$datadir_set"; then datadir="/var/lib/mysql" fi sbindir="/usr/sbin" libexecdir="/usr/sbin" ;; --datadir=*) datadir=`echo "$arg" | sed -e 's/^[^=]*=//'` datadir_set=1 ;; --pid-file=*) mysqld_pid_file_path=`echo "$arg" | sed -e 's/^[^=]*=//'` ;; --socket=*) socket=`echo "$arg" | sed -e 's/^[^=]*=//'` ;; --service-startup-timeout=*) service_startup_timeout=`echo "$arg" | sed -e 's/^[^=]*=//'` ;; esac done } # Get arguments from the my.cnf file, # the only group, which is read from now on is [mysqld] if test -x ./bin/my_print_defaults then print_defaults="./bin/my_print_defaults" elif test -x $bindir/my_print_defaults then print_defaults="$bindir/my_print_defaults" elif test -x $bindir/mysql_print_defaults then print_defaults="$bindir/mysql_print_defaults" else # Try to find basedir in /etc/my.cnf conf=/etc/my.cnf print_defaults= if test -r $conf then subpat='^[^=]*basedir[^=]*=\(.*\)$' dirs=`sed -e "/$subpat/!d" -e 's//\1/' $conf` for d in $dirs do d=`echo $d | sed -e 's/[ ]//g'` if test -x "$d/bin/my_print_defaults" then print_defaults="$d/bin/my_print_defaults" break fi if test -x "$d/bin/mysql_print_defaults" then print_defaults="$d/bin/mysql_print_defaults" break fi done fi # Hope it's in the PATH ... but I doubt it test -z "$print_defaults" && print_defaults="my_print_defaults" fi # # Read defaults file from 'basedir'. If there is no defaults file there # check if it's in the old (depricated) place (datadir) and read it from there # extra_args="" if test -r "$basedir/my.cnf" then extra_args="-e $basedir/my.cnf" else if test -r "$datadir/my.cnf" then extra_args="-e $datadir/my.cnf" fi fi parse_server_arguments `$print_defaults $extra_args mysqld server mysql_server mysql.server` # wait for the pid file to disappear wait_for_gone () { pid="$1" # process ID of the program operating on the pid-file pid_file_path="$2" # path to the PID file. i=0 crash_protection="by checking again" while test $i -ne $service_startup_timeout ; do if kill -0 "$pid" 2>/dev/null; then : # the server still runs else if test ! -s "$pid_file_path"; then # no server process and no pid-file? great, we're done! log_success_msg return 0 fi # pid-file exists, the server process doesn't. # it must've crashed, and mysqld_safe will restart it if test -n "$crash_protection"; then crash_protection="" sleep 5 continue # Check again. fi # Cannot help it log_failure_msg "The server quit without updating PID file ($pid_file_path)."; echo return 1 # not waiting any more. fi echo $echo_n ".$echo_c" i=`expr $i + 1` sleep 1 done log_failure_msg return 1 } wait_for_ready () { test -n "$socket" && sockopt="--socket=$socket" i=0 while test $i -ne $service_startup_timeout ; do if $bindir/mysqladmin $sockopt ping >/dev/null 2>&1; then log_success_msg return 0 fi echo $echo_n ".$echo_c" i=`expr $i + 1` sleep 1 done log_failure_msg return 1 } # # Set pid file if not given # if test -z "$mysqld_pid_file_path" then mysqld_pid_file_path=$datadir/`hostname`.pid else case "$mysqld_pid_file_path" in /* ) ;; * ) mysqld_pid_file_path="$datadir/$mysqld_pid_file_path" ;; esac fi case "$mode" in 'start') # Start daemon # Safeguard (relative paths, core dumps..) cd $basedir # Bail out if there's no valid $datadir (/var/lib/mysql) if ! [ "$datadir" != "/" ]; then echo $echo_n "ERROR: invalid datadir ($datadir)" failure; echo exit 1 fi # Install a new database if $datadir/mysql is empty. if [ `ls -1A $datadir/mysql|wc -l` == "0" ]; then echo "Initializing the system database: " TMPDIR=/var/tmp $bindir/mysql_install_db RETVAL=$? if [ "$RETVAL" -gt "0" ]; then echo "ERROR: The database could not be initialized." failure; echo exit 1 fi # Assume this is a clean install when the above checks has passed. $libexecdir/mysqld --version | awk '{ print $3}' > $datadir/mysql_upgrade_info chown -R $user:$user "$datadir" chmod 0711 "$datadir" fi # play safe... if ! [ -f $datadir/mysql_upgrade_info ]; then $libexecdir/mysqld --version | awk '{ print $3}' > $datadir/mysql_upgrade_info fi # Check if the system database should be updated and alert the user. NEW_VER="`$libexecdir/mysqld --version | cut -d' ' -f4 | cut -d- -f 1`" OLD_VER="`cat $datadir/mysql_upgrade_info | cut -d' ' -f4 | cut -d- -f 1`" get_mysql_id() { MAJOR="`echo $1|cut -d. -f1`"; MINOR="`echo $1|cut -d. -f2`"; PATCH="`echo $1|cut -d. -f3`" expr 10000 \* ${MAJOR} + 100 \* ${MINOR} + ${PATCH} } if [ "`get_mysql_id $NEW_VER`" -gt "`get_mysql_id $OLD_VER`" ]; then upgrade_message="WARNING: mysql_upgrade should be run (as root). The upgrade from mysql-$OLD_VER to mysql-$NEW_VER may require it." echo $echo_n "$upgrade_message" logger -p daemon.info -t mysql $upgrade_message echo fi # Remove stale pidfiles. if [ -z "`/sbin/pidof $libexecdir/mysqld`" ] && [ -e $mysqld_pid_file_path ]; then echo $echo_n "Removing stale pid file (mysqld)." rm -f $mysqld_pid_file_path echo fi mysqld_safe_pid=`ps ax | grep $bindir/mysqld_safe | grep -v grep | awk '{ print $1 }'` if ! [ -z $mysqld_safe_pid ]; then echo $echo_n "mysqld_safe is already running: " failure; echo exit 1 fi echo $echo_n "Starting MySQL: " if test -x $bindir/mysqld_safe then # Give extra arguments to mysqld with the my.cnf file. This script # may be overwritten at next upgrade. $bindir/mysqld_safe --datadir="$datadir" --pid-file="$mysqld_pid_file_path" $other_args >/dev/null 2>&1 & wait_for_ready; return_value=$?; echo # Make lock for RedHat / SuSE if test -w "$lockdir" then touch "$lock_file_path" fi exit $return_value else log_failure_msg "Couldn't find MySQL server ($bindir/mysqld_safe)"; echo fi ;; 'stop') # Stop daemon. We use a signal here to avoid having to know the # root password. if test -s "$mysqld_pid_file_path" then mysqld_pid=`cat "$mysqld_pid_file_path"` if (kill -0 $mysqld_pid 2>/dev/null) then echo $echo_n "Shutting down MySQL" kill $mysqld_pid # mysqld should remove the pid file when it exits, so wait for it. wait_for_gone $mysqld_pid "$mysqld_pid_file_path"; return_value=$?; echo else log_failure_msg "MySQL server process #$mysqld_pid is not running!"; echo rm "$mysqld_pid_file_path" fi # Delete lock for RedHat / SuSE if test -f "$lock_file_path" then rm -f "$lock_file_path" fi exit $return_value else log_failure_msg "MySQL server PID file could not be found!"; echo fi ;; 'restart') # Stop the service and regardless of whether it was # running or not, start it again. if $0 stop $other_args; then $0 start $other_args else log_failure_msg "Failed to stop running server, so refusing to try to start."; echo exit 1 fi ;; 'reload'|'force-reload') if test -s "$mysqld_pid_file_path" ; then read mysqld_pid < "$mysqld_pid_file_path" kill -HUP $mysqld_pid && log_success_msg "Reloading service MySQL: " touch "$mysqld_pid_file_path"; echo else log_failure_msg "MySQL PID file could not be found!"; echo exit 1 fi ;; 'status') # First, check to see if pid file exists if test -s "$mysqld_pid_file_path" ; then read mysqld_pid < "$mysqld_pid_file_path" if kill -0 $mysqld_pid 2>/dev/null ; then log_success_msg "MySQL running ($mysqld_pid)"; echo exit 0 else log_failure_msg "MySQL is not running, but PID file exists"; echo exit 1 fi else # Try to find appropriate mysqld process mysqld_pid=`pidof $libexecdir/mysqld` # test if multiple pids exist pid_count=`echo $mysqld_pid | wc -w` if test $pid_count -gt 1 ; then log_failure_msg "Multiple MySQL running but PID file could not be found ($mysqld_pid)" exit 5 elif test -z $mysqld_pid ; then if test -f "$lock_file_path" ; then log_failure_msg "MySQL is not running, but lock file ($lock_file_path) exists"; echo exit 2 fi log_failure_msg "MySQL is not running"; echo exit 3 else log_failure_msg "MySQL is running but PID file could not be found"; echo exit 4 fi fi ;; 'configtest') # Safeguard (relative paths, core dumps..) cd $basedir echo $echo_n "Testing MySQL configuration syntax" daemon=$bindir/mysqld if test -x $libexecdir/mysqld then daemon=$libexecdir/mysqld elif test -x $sbindir/mysqld then daemon=$sbindir/mysqld elif test -x `which mysqld` then daemon=`which mysqld` else log_failure_msg "Unable to locate the mysqld binary!" exit 1 fi help_out=`$daemon --help 2>&1`; r=$? if test "$r" != 0 ; then log_failure_msg "$help_out" log_failure_msg "There are syntax errors in the server configuration. Please fix them!" else log_success_msg "Syntax OK" fi exit $r ;; *) # usage basename=`basename "$0"` echo "Usage: $basename {start|stop|restart|reload|force-reload|status|configtest} [ MySQL server options ]" exit 1 ;; esac exit 0