145 lines
3.6 KiB
Bash
145 lines
3.6 KiB
Bash
#!/bin/bash
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#
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# mysqld This shell script takes care of starting and stopping
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# the MySQL subsystem (mysqld).
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#
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# chkconfig: - 64 36
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# description: MySQL database server.
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# processname: mysqld
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# config: /etc/my.cnf
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# pidfile: /var/run/mysqld/mysqld.pid
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# Source function library.
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. /etc/rc.d/init.d/functions
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# Source networking configuration.
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. /etc/sysconfig/network
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prog="MySQL"
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# extract value of a MySQL option from /etc/my.cnf
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# Usage: get_mysql_option FILE VARNAME DEFAULT
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# result is returned in $result
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# Ugly as this is, it knows nothing of option file sections ...
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get_mysql_option(){
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result=`sed -n "s/^[ \t]*$2[ \t]*=[ \t]*//p" "$1" 2>/dev/null | tail -n 1`
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if [ -z "$result" ]; then
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# not found, use default
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result="$3"
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else
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# found, still have to deal with quoting and end-of-line comments
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dequoted=`echo "$result" | sed "s/^'\([^']*\)'.*$/\1/"`
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if [ x"$dequoted" != x"$result" ]; then
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result="$dequoted"
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else
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dequoted=`echo "$result" | sed 's/^"\([^"]*\)".*$/\1/'`
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if [ x"$dequoted" != x"$result" ]; then
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result="$dequoted"
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else
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result=`echo "$result" | sed 's/^\([^ \t#]*\).*$/\1/'`
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fi
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fi
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fi
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}
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get_mysql_option /etc/my.cnf datadir "/var/lib/mysql"
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datadir="$result"
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get_mysql_option /etc/my.cnf socket "$datadir/mysql.sock"
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socketfile="$result"
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get_mysql_option /etc/my.cnf err-log "/var/log/mysqld.log"
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errlogfile="$result"
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get_mysql_option /etc/my.cnf pid-file "/var/run/mysqld/mysqld.pid"
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mypidfile="$result"
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start(){
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touch "$errlogfile"
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chown mysql:mysql "$errlogfile"
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chmod 0640 "$errlogfile"
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[ -x /sbin/restorecon ] && /sbin/restorecon "$errlogfile"
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if [ ! -d "$datadir/mysql" ] ; then
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action $"Initializing MySQL database: " /usr/bin/mysql_install_db
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ret=$?
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chown -R mysql:mysql "$datadir"
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if [ $ret -ne 0 ] ; then
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return $ret
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fi
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fi
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chown -R mysql:mysql "$datadir"
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chmod 0755 "$datadir"
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# The reason for explicitly specifying --pid-file is that there may
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# be no such entry in my.cnf, and the default behavior will be to not
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# create it at all...
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/usr/bin/mysqld_safe --defaults-file=/etc/my.cnf --pid-file="$mypidfile" >/dev/null 2>&1 &
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ret=$?
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# Spin for a maximum of N seconds waiting for the server to come up.
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# Rather than assuming we know a valid username, accept an "access
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# denied" response as meaning the server is functioning.
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if [ $ret -eq 0 ]; then
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STARTTIMEOUT=10
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while [ $STARTTIMEOUT -gt 0 ]; do
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RESPONSE=`/usr/bin/mysqladmin -uUNKNOWN_MYSQL_USER ping 2>&1` && break
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echo "$RESPONSE" | grep -q "Access denied for user" && break
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sleep 1
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let STARTTIMEOUT=${STARTTIMEOUT}-1
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done
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if [ $STARTTIMEOUT -eq 0 ]; then
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echo "Timeout error occurred trying to start MySQL Daemon."
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action $"Starting $prog: " /bin/false
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else
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action $"Starting $prog: " /bin/true
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fi
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else
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action $"Starting $prog: " /bin/false
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fi
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[ $ret -eq 0 ] && touch /var/lock/subsys/mysqld
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return $ret
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}
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stop(){
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/bin/kill `cat "$mypidfile" 2>/dev/null ` >/dev/null 2>&1
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ret=$?
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if [ $ret -eq 0 ]; then
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sleep 2
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rm -f /var/lock/subsys/mysqld
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rm -f "$socketfile"
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action $"Stopping $prog: " /bin/true
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else
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action $"Stopping $prog: " /bin/false
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fi
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return $ret
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}
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restart(){
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stop
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start
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}
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condrestart(){
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[ -e /var/lock/subsys/mysqld ] && restart || :
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}
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# See how we were called.
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case "$1" in
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start)
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start
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;;
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stop)
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stop
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;;
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status)
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status mysqld
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;;
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restart)
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restart
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;;
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condrestart)
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condrestart
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;;
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*)
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echo $"Usage: $0 {start|stop|status|condrestart|restart}"
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exit 1
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esac
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exit $?
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