标签：mysql init.d启动脚本
在实际生产环境中mysql服务的环境一般是使用官网下载的二进制通用包部署的，它可以快速部署mysql的环境（具体部署可以看http://jim123.blog.51cto.com/4763600/1835010），但是它的启动和关闭或者重启的时候会有些麻烦需要用到mysql环境路径下的bin文件夹里的工具，它并没有在/etc/rc.d/init.d/里添加启动脚本，如果需要管理多台环境不一样的mysql重启的时候就用这些方法效率就会很低，有可能还会在启动时忘记指定用户带来的错误等等，所以我们可以在/etc/rc.d/init.d/路径下添加mysq的启动脚本来实现，这样我们平时就可以通过使用service mysqld restart或者是/etc/init.d/mysqld retsart来快速重启或关闭mysql
#!/bin/sh
basedir=/usr/local/mysql#mysql的环境路径
datadir=/data/mysqldata#mysql的库文件路径
service_startup_timeout=900
pid_file=
server_pid_file=
use_mysqld_safe=1
user=mysql
if test -z "$basedir"
then
basedir=/usr/local/mysql
bindir=./bin
if test -z "$datadir"
then
datadir=/usr/local/mysql/data
fi
sbindir=./bin
libexecdir=./bin
else
bindir="$basedir/bin"
if test -z "$datadir"
then
datadir="$basedir/data"
fi
sbindir="$basedir/sbin"
libexecdir="$basedir/libexec"
fi
datadir_set=
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=$1 # start or stop
shift
other_args="$*"
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
;;
--user=*) user=`echo "$arg" | sed -e ‘s/^[^=]*=//‘` ;;
--pid-file=*) server_pid_file=`echo "$arg" | sed -e ‘s/^[^=]*=//‘` ;;
--service-startup-timeout=*) service_startup_timeout=`echo "$arg" | sed -e ‘s/^[^=]*=//‘` ;;
--use-mysqld_safe) use_mysqld_safe=1;;
--use-manager) use_mysqld_safe=0;;
esac
done
}
parse_manager_arguments() {
for arg do
case "$arg" in
--pid-file=*) pid_file=`echo "$arg" | sed -e ‘s/^[^=]*=//‘` ;;
--user=*) user=`echo "$arg" | sed -e ‘s/^[^=]*=//‘` ;;
esac
done
}
wait_for_pid () {
verb="$1"
manager_pid="$2"
i=0
avoid_race_condition="by checking again"
while test $i -ne $service_startup_timeout ; do
case "$verb" in
‘created‘)
test -s $pid_file && i=‘‘ && break
;;
‘removed‘)
test ! -s $pid_file && i=‘‘ && break
;;
*)
echo "wait_for_pid () usage: wait_for_pid created|removed manager_pid"
exit 1
;;
esac
if test -n "$manager_pid"; then
if kill -0 "$manager_pid" 2>/dev/null; then
:
else
if test -n "$avoid_race_condition"; then
avoid_race_condition=""
continue
fi
log_failure_msg "Manager of pid-file quit without updating file."
return 1
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
}
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
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="$d/bin/mysql_print_defaults"
break
fi
done
fi
test -z "$print_defaults" && print_defaults="my_print_defaults"
fi
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 $extra_args mysqld server mysql_server mysql.server`
parse_manager_arguments `$print_defaults $extra_args manager`
if test -z "$pid_file"
then
pid_file=$datadir/mysqlmanager-`/bin/hostname`.pid
else
case "$pid_file" in
/* ) ;;
* ) pid_file="$datadir/$pid_file" ;;
esac
fi
if test -z "$server_pid_file"
then
server_pid_file=$datadir/`/bin/hostname`.pid
else
case "$server_pid_file" in
/* ) ;;
* ) server_pid_file="$datadir/$server_pid_file" ;;
esac
fi
case "$mode" in
‘start‘)
cd $basedir
manager=$bindir/mysqlmanager
if test -x $libexecdir/mysqlmanager
then
manager=$libexecdir/mysqlmanager
elif test -x $sbindir/mysqlmanager
then
manager=$sbindir/mysqlmanager
fi
echo $echo_n "Starting MySQL"
if test -x $manager -a "$use_mysqld_safe" = "0"
then
if test -n "$other_args"
then
log_failure_msg "MySQL manager does not support options ‘$other_args‘"
exit 1
fi
"$manager" --mysqld-safe-compatible --user="$user" --pid-file="$pid_file" >/dev/null 2>&1 &
wait_for_pid created $!; return_value=$?
if test -w /var/lock/subsys
then
touch /var/lock/subsys/mysqlmanager
fi
exit $return_value
elif test -x $bindir/mysqld_safe
then
pid_file=$server_pid_file
$bindir/mysqld_safe --datadir=$datadir --pid-file=$server_pid_file $other_args >/dev/null 2>&1 &
wait_for_pid created $!; return_value=$?
if test -w /var/lock/subsys
then
touch /var/lock/subsys/mysql
fi
exit $return_value
else
log_failure_msg "Couldn‘t find MySQL manager ($manager) or server ($bindir/mysqld_safe)"
fi
;;
‘stop‘)
lock_dir=/var/lock/subsys/mysqlmanager
if test ! -s "$pid_file"
then
pid_file=$server_pid_file
lock_dir=/var/lock/subsys/mysql
fi
if test -s "$pid_file"
then
mysqlmanager_pid=`cat $pid_file`
if (kill -0 $mysqlmanager_pid 2>/dev/null)
then
echo $echo_n "Shutting down MySQL"
kill $mysqlmanager_pid
wait_for_pid removed "$mysqlmanager_pid"; return_value=$?
else
log_failure_msg "MySQL manager or server process #$mysqlmanager_pid is not running!"
rm $pid_file
fi
if test -f $lock_dir
then
rm -f $lock_dir
fi
exit $return_value
else
log_failure_msg "MySQL manager or server PID file could not be found!"
fi
;;
‘restart‘)
if $0 stop $other_args; then
$0 start $other_args
else
log_failure_msg "Failed to stop running server, so refusing to try to start."
exit 1
fi
;;
‘reload‘|‘force-reload‘)
if test -s "$server_pid_file" ; then
read mysqld_pid < $server_pid_file
kill -HUP $mysqld_pid && log_success_msg "Reloading service MySQL"
touch $server_pid_file
else
log_failure_msg "MySQL PID file could not be found!"
exit 1
fi
;;
‘status‘)
if test -s "$server_pid_file" ; then
read mysqld_pid < $server_pid_file
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
mysqld_pid=`pidof $libexecdir/mysqld`
if test -z $mysqld_pid ; then
if test "$use_mysqld_safe" = "0" ; then
lockfile=/var/lock/subsys/mysqlmanager
else
lockfile=/var/lock/subsys/mysql
fi
if test -f $lockfile ; then
log_failure_msg "MySQL is not running, but lock 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
;;
*)
echo "Usage: $0 {start|stop|restart|reload|force-reload|status} [ MySQL server options ]"
exit 1
;;
esac
exit 0 这样我们就可以快速管理mysql的服务器了，当然可能实际生产环境中还有很多的服务并没有启动脚本，也需要我们手动去修改添加启动脚本。
本文出自 “技术随笔” 博客，转载请与作者联系！
标签：mysql init.d启动脚本
原文地址：http://jim123.blog.51cto.com/4763600/1837807
