diff options
Diffstat (limited to 'mysql.init')
| -rw-r--r-- | mysql.init | 237 |
1 files changed, 237 insertions, 0 deletions
diff --git a/mysql.init b/mysql.init new file mode 100644 index 0000000..7d53f5d --- /dev/null +++ b/mysql.init @@ -0,0 +1,237 @@ +#!/bin/sh +# +# mysqld This shell script takes care of starting and stopping +# the MySQL subsystem (mysqld). +# +# chkconfig: - 64 36 +# description: MySQL database server. +# processname: mysqld +# config: /etc/my.cnf +# pidfile: /var/run/mysqld/mysqld.pid +### BEGIN INIT INFO +# Provides: mysqld +# Required-Start: $local_fs $remote_fs $network $named $syslog $time +# Required-Stop: $local_fs $remote_fs $network $named $syslog $time +# Short-Description: start and stop MySQL server +# Description: MySQL database server +### END INIT INFO + +# Source function library. +. /etc/rc.d/init.d/functions + +# Source networking configuration. +. /etc/sysconfig/network + + +exec="/usr/bin/mysqld_safe" +prog="mysqld" + +# Set timeouts here so they can be overridden from /etc/sysconfig/mysqld +STARTTIMEOUT=120 +STOPTIMEOUT=60 +MYOPTIONS= + +[ -e /etc/sysconfig/$prog ] && . /etc/sysconfig/$prog + +lockfile=/var/lock/subsys/$prog + + +# extract value of a MySQL option from config files +# Usage: get_mysql_option SECTION VARNAME DEFAULT +# result is returned in $result +# We use my_print_defaults which prints all options from multiple files, +# with the more specific ones later; hence take the last match. +get_mysql_option(){ + result=`/usr/bin/my_print_defaults "$1" | sed -n "s/^--$2=//p" | tail -n 1` + if [ -z "$result" ]; then + # not found, use default + result="$3" + fi +} + +get_mysql_option mysqld datadir "/var/lib/mysql" +datadir="$result" +get_mysql_option mysqld socket "$datadir/mysql.sock" +socketfile="$result" +get_mysql_option mysqld_safe log-error "/var/log/mysqld.log" +errlogfile="$result" +get_mysql_option mysqld_safe pid-file "/var/run/mysqld/mysqld.pid" +mypidfile="$result" + + +start(){ + [ -x $exec ] || exit 5 + # check to see if it's already running + RESPONSE=`/usr/bin/mysqladmin --socket="$socketfile" --user=UNKNOWN_MYSQL_USER ping 2>&1` + if [ $? = 0 ]; then + # already running, do nothing + action $"Starting $prog: " /bin/true + ret=0 + elif echo "$RESPONSE" | grep -q "Access denied for user" + then + # already running, do nothing + action $"Starting $prog: " /bin/true + ret=0 + else + # prepare for start + touch "$errlogfile" + chown mysql:mysql "$errlogfile" + chmod 0640 "$errlogfile" + [ -x /sbin/restorecon ] && /sbin/restorecon "$errlogfile" + if [ ! -d "$datadir/mysql" ] ; then + # First, make sure $datadir is there with correct permissions + if [ ! -e "$datadir" -a ! -h "$datadir" ] + then + mkdir -p "$datadir" || exit 1 + fi + chown mysql:mysql "$datadir" + chmod 0755 "$datadir" + [ -x /sbin/restorecon ] && /sbin/restorecon "$datadir" + # Now create the database + action $"Initializing MySQL database: " /usr/bin/mysql_install_db --datadir="$datadir" --user=mysql + ret=$? + chown -R mysql:mysql "$datadir" + if [ $ret -ne 0 ] ; then + return $ret + fi + fi + chown mysql:mysql "$datadir" + chmod 0755 "$datadir" + # If startsos + if [ "$1" = "sos" ] ; then + MYOPTIONS="$MYOPTIONS --skip-grant-tables --skip-networking" + fi + # Pass all the options determined above, to ensure consistent behavior. + # In many cases mysqld_safe would arrive at the same conclusions anyway + # but we need to be sure. (An exception is that we don't force the + # log-error setting, since this script doesn't really depend on that, + # and some users might prefer to configure logging to syslog.) + # Note: set --basedir to prevent probes that might trigger SELinux + # alarms, per bug #547485 + $exec --datadir="$datadir" --socket="$socketfile" \ + --pid-file="$mypidfile" \ + $MYOPTIONS \ + --basedir=/usr --user=mysql >/dev/null 2>&1 & + safe_pid=$! + # Spin for a maximum of N seconds waiting for the server to come up; + # exit the loop immediately if mysqld_safe process disappears. + # Rather than assuming we know a valid username, accept an "access + # denied" response as meaning the server is functioning. + ret=0 + TIMEOUT="$STARTTIMEOUT" + while [ $TIMEOUT -gt 0 ]; do + RESPONSE=`/usr/bin/mysqladmin --socket="$socketfile" --user=UNKNOWN_MYSQL_USER ping 2>&1` + mret=$? + if [ $mret -eq 0 ]; then + break + fi + # exit codes 1, 11 (EXIT_CANNOT_CONNECT_TO_SERVICE) are expected, + # anything else suggests a configuration error + if [ $mret -ne 1 -a $mret -ne 11 ]; then + echo "$RESPONSE" + echo "Cannot check for MySQL Daemon startup because of mysqladmin failure." + ret=1 + break + fi + echo "$RESPONSE" | grep -q "Access denied for user" && break + if ! /bin/kill -0 $safe_pid 2>/dev/null; then + echo "MySQL Daemon failed to start." + ret=1 + break + fi + sleep 1 + let TIMEOUT=${TIMEOUT}-1 + done + if [ $TIMEOUT -eq 0 ]; then + echo "Timeout error occurred trying to start MySQL Daemon." + ret=1 + fi + if [ $ret -eq 0 ]; then + action $"Starting $prog: " /bin/true + touch $lockfile + else + action $"Starting $prog: " /bin/false + fi + fi + return $ret +} + +stop(){ + if [ ! -f "$mypidfile" ]; then + # not running; per LSB standards this is "ok" + action $"Stopping $prog: " /bin/true + return 0 + fi + MYSQLPID=`cat "$mypidfile"` + if [ -n "$MYSQLPID" ]; then + /bin/kill "$MYSQLPID" >/dev/null 2>&1 + ret=$? + if [ $ret -eq 0 ]; then + TIMEOUT="$STOPTIMEOUT" + while [ $TIMEOUT -gt 0 ]; do + /bin/kill -0 "$MYSQLPID" >/dev/null 2>&1 || break + sleep 1 + let TIMEOUT=${TIMEOUT}-1 + done + if [ $TIMEOUT -eq 0 ]; then + echo "Timeout error occurred trying to stop MySQL Daemon." + ret=1 + action $"Stopping $prog: " /bin/false + else + rm -f $lockfile + rm -f "$socketfile" + action $"Stopping $prog: " /bin/true + fi + else + action $"Stopping $prog: " /bin/false + fi + else + # failed to read pidfile, probably insufficient permissions + action $"Stopping $prog: " /bin/false + ret=4 + fi + return $ret +} + +restart(){ + stop + start +} + +condrestart(){ + [ -e $lockfile ] && restart || : +} + + +# See how we were called. +case "$1" in + start) + start + ;; + startsos) + start sos + ;; + stop) + stop + ;; + status) + status $prog + ;; + restart) + restart + ;; + condrestart|try-restart) + condrestart + ;; + reload) + exit 3 + ;; + force-reload) + restart + ;; + *) + echo $"Usage: $0 {start|stop|status|restart|condrestart|try-restart|reload|force-reload|startsos}" + exit 2 +esac + +exit $? |