153 lines
4.2 KiB
Bash
153 lines
4.2 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 config files
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# Usage: get_mysql_option SECTION VARNAME DEFAULT
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# result is returned in $result
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# We use my_print_defaults which prints all options from multiple files,
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# with the more specific ones later; hence take the last match.
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get_mysql_option(){
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result=`/usr/bin/my_print_defaults "$1" | sed -n "s/^--$2=//p" | tail -n 1`
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if [ -z "$result" ]; then
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# not found, use default
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result="$3"
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fi
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}
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get_mysql_option mysqld datadir "/var/lib/mysql"
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datadir="$result"
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get_mysql_option mysqld socket "$datadir/mysql.sock"
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socketfile="$result"
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get_mysql_option mysqld_safe log-error "/var/log/mysqld.log"
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errlogfile="$result"
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get_mysql_option mysqld_safe pid-file "/var/run/mysqld/mysqld.pid"
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mypidfile="$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 $"Initializing MySQL database: " /usr/bin/mysql_install_db --datadir="$datadir" --user=mysql
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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 $ret
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fi
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fi
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chown mysql:mysql "$datadir"
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chmod 0755 "$datadir"
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# Pass all the options determined above, to ensure consistent behavior.
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# In many cases mysqld_safe would arrive at the same conclusions anyway
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# but we need to be sure.
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/usr/bin/mysqld_safe --datadir="$datadir" --socket="$socketfile" \
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--log-error="$errlogfile" --pid-file="$mypidfile" \
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--user=mysql >/dev/null 2>&1 &
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ret=$?
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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=30
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while [ $STARTTIMEOUT -gt 0 ]; do
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RESPONSE=`/usr/bin/mysqladmin --socket="$socketfile" --user=UNKNOWN_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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ret=1
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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 $ret
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}
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stop(){
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MYSQLPID=`cat "$mypidfile" 2>/dev/null `
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if [ -n "$MYSQLPID" ]; then
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/bin/kill "$MYSQLPID" >/dev/null 2>&1
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ret=$?
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if [ $ret -eq 0 ]; then
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STOPTIMEOUT=60
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while [ $STOPTIMEOUT -gt 0 ]; do
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/bin/kill -0 "$MYSQLPID" >/dev/null 2>&1 || break
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sleep 1
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let STOPTIMEOUT=${STOPTIMEOUT}-1
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done
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if [ $STOPTIMEOUT -eq 0 ]; then
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echo "Timeout error occurred trying to stop MySQL Daemon."
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ret=1
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action $"Stopping $prog: " /bin/false
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else
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rm -f /var/lock/subsys/mysqld
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rm -f "$socketfile"
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action $"Stopping $prog: " /bin/true
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fi
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else
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action $"Stopping $prog: " /bin/false
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fi
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else
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ret=1
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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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