#!/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/S99
mysql and /etc/rc0.d/K01
mysql.
# 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 $remote_fs
# Default-Start: 2 3 4 5
# Default-Stop: 0 1 6
# Short-Description: start and stop
MySQL
# Description:
MySQL is a very fast and reliable SQL database engine.
### END INIT INFO
# If you install
MySQL on some other places than /usr/local/
mysql, then you
# have to do one of the following things for this script to work:
#
# - Run this script from within the
MySQL installation directory
# - Create a /etc/my.cnf
file with the following information:
# [
mysqld]
# basedir=<path-to-
mysql-installation-directory>
# - Add the above to any other configuration
file (for example ~/.my.ini
)
# and copy my_print_defaults to /usr/bin
# - Add the path to the
mysql-installation-directory to the basedir variable
#
below.
#
# If you want to affect other
MySQL variables, you should make your changes
# in the /etc/my.cnf, ~/.my.cnf or other
MySQL configuration
files.
# If you change base dir, you must also change datadir. These may get
# overwritten by settings in the
MySQL configuration
files.
LOCALPATH=$
(dirname $
(readlink -f "$0"
))
basedir=${LOCALPATH}/software
datadir=${LOCALPATH}/data
# Default value, in seconds, afterwhich the script should timeout waiting
# for server start.
# Value here is overriden by value in my.cnf.
# 0 means don't wait at all
# Negative num
bers mean to wait indefinitely
service_startup_timeout=900
# Lock directory for RedHat / SuSE.
lockdir="${LOCALPATH}/lock"
lock_
file_path="${lockdir}/
mysql.lock"
# The following variables are only set for letting
mysql.server find things.
# Set some defaults
mysqld_
pid_
file_path="${LOCALPATH}/
pid/
mysql.
pid"
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
li
bexecdir=/usr/local/
mysql/bin
else
bindir="$basedir/bin"
if test -z "$datadir"
then
datadir="$basedir/data"
fi
sbindir="$basedir/sbin"
li
bexecdir="$basedir/li
bexec"
fi
# datadir_set is used to determine if datadir was set
(and so should
be
# *
not* set inside of the --basedir= handler.
)
datadir_set=1
#
# 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"
li
bexecdir="$basedir/li
bexec"
;;
--datadir=*
) datadir=`echo "$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=${LOCALPATH}/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 "${LOCALPATH}/etc/my.cnf"
then
extra_args="-e ${LOCALPATH}/etc/my.cnf"
fi
parse_server_arguments `$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.
$bindir/
mysqld_safe --defaults-
file=${LOCALPATH}/etc/my.cnf $other_args >/dev/null &
wait_for_
pid created "$!" "$
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 $li
bexecdir/
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
博客介绍了在Linux系统下杀死MySQL线程的方法，通过执行ps -ef |grep mys命令查出MySQL线程并将其杀死，操作简单。
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