#!/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 64 36
# description: A very fast and reliable SQL database engine.
# Comments to support LSB init script conventions
### BEGIN INIT INFO
# Provides: mysql
# Required-Start: $local_fs $network $remote_fs
# Should-Start: ypbind nscd
ldap ntpd xntpd
# Required-Stop: $local_fs $network $remote_fs
# Default-Start: 2 3 4 5
# Default-Stop: 0 1 6
# Short-Description: start and stop MySQL
# Description: MySQL is a very fast and reliable SQL database engine.
### END INIT INFO
# If you install MySQL on some other places than /usr/local/mysql, then you
# have to do one of the following things for this script to work:
#
# - Run this script from within the MySQL installation directory
# - Create a /etc/my.cnf file with the following information:
# [mysqld]
# basedir
=<path-to-mysql-installation-directory>
# - Add the above to any other configuration file
(for example ~/.my.ini
)
# and copy my_print_defaults to /usr/bin
# - Add the path to the mysql-installation-directory to the basedir variable
# below.
#
# If you want to affect other MySQL variables, you should make your changes
# in the /etc/my.cnf, ~/.my.cnf or other MySQL configuration files.
# If you change base dir, you must also change datadir. These may get
# overwritten by settings in the MySQL configuration files.
basedir
=
datadir
=
# Default value, in seconds, afterwhich the script should timeout waiting
# for server start.
# Value here is overriden by value in my.cnf.
# 0 means don't wait at all
# Negative numbers mean to wait indefinitely
service_startup_timeout
=900
# Lock directory for RedHat / SuSE.
lockdir
='/var/lock/subsys'
lock_file_path
="$lockdir/mysql"
# The following variables are only set for letting mysql.server find things.
# Set some defaults
mysqld_pid_file_path
=
if test -z "$basedir"
then
basedir
=/usr/local/mysql
bindir
=/usr/local/mysql/bin
if test -z "$datadir"
then
datadir
=/usr/local/mysql/data
fi
sbindir
=/usr/local/mysql/bin
libexecdir
=/usr/local/mysql/bin
else
bindir
="$basedir/bin"
if test -z "$datadir"
then
datadir
="$basedir/data"
fi
sbindir
="$basedir/sbin"
libexecdir
="$basedir/libexec"
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! $@"
}
fi
PATH
="/sbin:/usr/sbin:/bin:/usr/bin:$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
="$basedir/bin"
if test -z "$datadir_set"; then
datadir
="$basedir/data"
fi
sbindir
="$basedir/sbin"
libexecdir
="$basedir/libexec"
;;
--datadir
=*
) datadir
=`echo "$arg" | sed -e 's/^[^
=]*
=//'`
datadir_set
=1
;;
--pid-file
=*
) mysqld_pid_file_path
=`echo "$arg" | sed -e 's/^[^
=]*
=//'` ;;
--service-startup-timeout
=*
) service_startup_timeout
=`echo "$arg" | sed -e 's/^[^
=]*
=//'` ;;
esac
done
}
wait_for_pid
() {
verb
="$1" # created | removed
pid
="$2" # process ID of the program operating on the pid-file
pid_file_path
="$3" # path to the PID file.
i
=0
avoid_race_condition
="by checking again"
while test $i -ne $service_startup_timeout ; do
case "$verb" in
'created'
)
# wait for a PID-file to pop into existence.
test -s "$pid_file_path" && i
='' && break
;;
'removed'
)
# wait for this PID-file to disappear
test ! -s "$pid_file_path" && i
='' && break
;;
*
)
echo "wait_for_pid
() usage: wait_for_pid created|removed pid pid_file_path"
exit 1
;;
esac
# if server isn't running, then pid-file will never be updated
if test -n "$pid"; then
if kill -0 "$pid" 2>/dev/null; then
: # the server still runs
else
# The server may have exited between the last pid-file check and now.
if test -n "$avoid_race_condition"; then
avoid_race_condition
=""
continue # Check again.
fi
# there's nothing that will affect the file.
log_failure_msg "The server quit without updating PID file
($pid_file_path
)."
return 1 # not waiting any more.
fi
fi
echo $echo_n ".$echo_c"
i
=`expr $i + 1`
sleep 1
done
if test -z "$i" ; then
log_success_msg
return 0
else
log_failure_msg
return 1
fi
}
# Get arguments from the my.cnf file,
# the only group, which is read from now on is [mysqld]
if test -x "$bindir/my_print_defaults"; then
print_defaults
="$bindir/my_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
="$d/bin/my_print_defaults"
break
fi
done
fi
# Hope it's in the PATH ... but I doubt it
test -z "$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 $basedir/my.cnf"
fi
parse_server_arguments `$print_defaults $extra_args mysqld server mysql_server mysql.server`
#
# Set pid file if not given
#
if test -z "$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
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" $other_args >/dev/null &
wait_for_pid created "$!" "$mysqld_pid_file_path"; return_value
=$?
# 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
)"
fi
;;
'stop'
)
# Stop daemon. We use a signal here to avoid having to know the
# root password.
if test -s "$mysqld_pid_file_path"
then
# signal mysqld_safe that it needs to stop
touch "$mysqld_pid_file_path.shutdown"
mysqld_pid
=`cat "$mysqld_pid_file_path"`
if
(kill -0 $mysqld_pid 2>/dev/null
)
then
echo $echo_n "Shutting down MySQL"
kill $mysqld_pid
# mysqld should remove the pid file when it exits, so wait for it.
wait_for_pid removed "$mysqld_pid" "$mysqld_pid_file_path"; return_value
=$?
else
log_failure_msg "MySQL server process #$mysqld_pid is not running!"
rm "$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!"
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 $other_args
else
log_failure_msg "Failed to stop running server, so refusing to try to start."
exit 1
fi
;;
'reload'|'force-reload'
)
if test -s "$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"
else
log_failure_msg "MySQL PID file could not be found!"
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
)"
exit 0
else
log_failure_msg "MySQL is not running, but PID file exists"
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"
exit 2
fi
log_failure_msg "MySQL is not running"
exit 3
else
log_failure_msg "MySQL is running but PID file could not be found"
exit 4
fi
fi
;;
*
)
#
usage
basename
=`basename "$0"`
echo "
Usage: $basename {start|stop|restart|reload|force-reload|status} [ MySQL server options ]"
exit 1
;;
esac
exit 0
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