Jay Larson
b3f6944280
* Moved to newer version scheme * Added modified my.cnf * corrected function log_info_msg to log_init_msg * Updated usher to install my.cnf
292 lines
7.9 KiB
Bash
Executable File
292 lines
7.9 KiB
Bash
Executable File
#!/bin/sh
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### BEGIN INIT INFO
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# Provides: mysql
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# Required-Start: $local_fs $network $remote_fs
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# Should-Start: ypbind nscd ldap ntpd xntpd
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# Required-Stop: $local_fs $network $remote_fs
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# Default-Start: 2 3 4 5
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# Default-Stop: 0 1 6
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# Short-Description: start and stop MySQL
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# Description: MySQL is a very fast and reliable SQL database engine.
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### END INIT INFO
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# Default value, in seconds, afterwhich the script should timeout waiting
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# for server start.
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# Value here is overriden by value in my.cnf.
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# 0 means don't wait at all
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# Negative numbers mean to wait indefinitely
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service_startup_timeout=900
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basedir=/usr
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bindir="$basedir/bin"
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sbindir="$basedir/sbin"
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libexecdir=$sbindir
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datadir=/var/lib/mysql
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# datadir_set is used to determine if datadir was set (and so should be
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# *not* set inside of the --basedir= handler.)
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datadir_set=
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. /lib/lsb/init-functions
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mode=$1 # start or stop
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[ $# -ge 1 ] && shift
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other_args="$*" # uncommon, but needed when called from an RPM upgrade action
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# Expected: "--skip-networking --skip-grant-tables"
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# They are not checked here, intentionally, as it is the
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# resposibility of the "spec" file author to give
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# correct arguments only.
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parse_server_arguments() {
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for arg do
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case "$arg" in
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--basedir=*) basedir=`echo "$arg" | sed -e 's/^[^=]*=//'`
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bindir="$basedir/bin"
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if test -z "$datadir_set"; then
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datadir="$basedir/data"
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fi
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sbindir="$basedir/sbin"
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if test -f "$basedir/bin/mysqld"
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then
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libexecdir="$basedir/bin"
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else
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libexecdir="$basedir/libexec"
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fi
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libexecdir="$basedir/libexec"
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;;
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--datadir=*) datadir=`echo "$arg" | sed -e 's/^[^=]*=//'`
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datadir_set=1
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;;
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--log-basename=*|--hostname=*|--loose-log-basename=*)
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mysqld_pid_file_path=`echo "$arg.pid" | sed -e 's/^[^=]*=//'`
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;;
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--pid-file=*) mysqld_pid_file_path=`echo "$arg" | sed -e 's/^[^=]*=//'` ;;
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--service-startup-timeout=*) service_startup_timeout=`echo "$arg" | sed -e 's/^[^=]*=//'` ;;
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esac
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done
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}
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# Get arguments from the my.cnf file,
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# the only group, which is read from now on is [mysqld]
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parse_server_arguments `my_print_defaults mysqld`
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# wait for the pid file to disappear
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wait_for_gone () {
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pid="$1" # process ID of the program operating on the pid-file
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pid_file_path="$2" # path to the PID file.
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i=0
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crash_protection="by checking again"
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while test $i -ne $service_startup_timeout ; do
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if kill -0 "$pid" 2>/dev/null; then
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: # the server still runs
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else
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if test ! -s "$pid_file_path"; then
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# no server process and no pid-file? great, we're done!
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log_success_msg
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return 0
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fi
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# pid-file exists, the server process doesn't.
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# it must've crashed, and mysqld_safe will restart it
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if test -n "$crash_protection"; then
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crash_protection=""
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sleep 5
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continue # Check again.
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fi
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# Cannot help it
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log_failure_msg "The server quit without updating PID file ($pid_file_path)."
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return 1 # not waiting any more.
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fi
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echo -n ".$echo_c"
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i=`expr $i + 1`
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sleep 1
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done
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log_failure_msg
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return 1
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}
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wait_for_ready () {
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i=0
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while test $i -ne $service_startup_timeout ; do
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if $bindir/mysqladmin ping >/dev/null 2>&1; then
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log_success_msg
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return 0
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elif kill -0 $! 2>/dev/null ; then
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: # mysqld_safe is still running
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else
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# mysqld_safe is no longer running, abort the wait loop
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break
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fi
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echo -n ".$echo_c"
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i=`expr $i + 1`
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sleep 1
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done
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log_failure_msg
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return 1
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}
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#
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# Set pid file
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#
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mysqld_pid_file_path=$datadir/`hostname`.pid
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case "$mode" in
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'start')
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# Start daemon
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# Safeguard (relative paths, core dumps..)
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cd $basedir
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log_init_msg "Starting MySQL"
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if test -x $bindir/mysqld_safe
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then
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# Give extra arguments to mysqld with the my.cnf file. This script
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# may be overwritten at next upgrade.
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$bindir/mysqld_safe --datadir="$datadir" --pid-file="$mysqld_pid_file_path" $other_args >/dev/null 2>&1 &
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wait_for_ready; return_value=$?
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exit $return_value
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else
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log_failure_msg "Couldn't find MySQL server ($bindir/mysqld_safe)"
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fi
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;;
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'stop')
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# Stop daemon. We use a signal here to avoid having to know the
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# root password.
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if test -s "$mysqld_pid_file_path"
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then
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mysqld_pid=`cat "$mysqld_pid_file_path"`
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if (kill -0 $mysqld_pid 2>/dev/null)
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then
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log_init_msg "Shutting down MySQL"
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kill $mysqld_pid
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# mysqld should remove the pid file when it exits, so wait for it.
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wait_for_gone $mysqld_pid "$mysqld_pid_file_path"; return_value=$?
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else
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log_failure_msg "MySQL server process #$mysqld_pid is not running!"
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rm "$mysqld_pid_file_path"
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fi
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exit $return_value
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elif ! pidof $sbindir/mysqld
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then
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log_failure_msg "MySQL server is not running!"
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else
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log_failure_msg "MySQL server PID file could not be found!"
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fi
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;;
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'restart')
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# Stop the service and regardless of whether it was
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# running or not, start it again.
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if $0 stop $other_args; then
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if ! $0 start $other_args; then
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log_failure_msg "Failed to restart server."
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exit 1
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fi
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else
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log_failure_msg "Failed to stop running server, so refusing to try to start."
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exit 1
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fi
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;;
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'reload'|'force-reload')
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if test -s "$mysqld_pid_file_path" ; then
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read mysqld_pid < "$mysqld_pid_file_path"
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kill -HUP $mysqld_pid && log_success_msg "Reloading service MySQL"
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touch "$mysqld_pid_file_path"
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else
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log_failure_msg "MySQL PID file could not be found!"
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exit 1
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fi
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;;
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'status')
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# First, check to see if pid file exists
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if test -s "$mysqld_pid_file_path" ; then
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read mysqld_pid < "$mysqld_pid_file_path"
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if kill -0 $mysqld_pid 2>/dev/null ; then
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log_success_msg "MySQL running ($mysqld_pid)"
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exit 0
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else
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log_failure_msg "MySQL is not running, but PID file exists"
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exit 1
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fi
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else
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# Try to find appropriate mysqld process
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mysqld_pid=`pidof $libexecdir/mysqld`
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# test if multiple pids exist
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pid_count=`echo $mysqld_pid | wc -w`
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if test $pid_count -gt 1 ; then
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log_failure_msg "Multiple MySQL running but PID file could not be found ($mysqld_pid)"
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exit 5
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elif test -z $mysqld_pid ; then
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log_failure_msg "MySQL is not running"
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exit 3
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else
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log_failure_msg "MySQL is running but PID file could not be found"
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exit 4
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fi
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fi
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;;
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'configtest')
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# Safeguard (relative paths, core dumps..)
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cd $basedir
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echo -n "Testing MySQL configuration syntax"
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daemon=$bindir/mysqld
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if test -x $libexecdir/mysqld
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then
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daemon=$libexecdir/mysqld
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elif test -x $sbindir/mysqld
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then
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daemon=$sbindir/mysqld
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elif test -x `which mysqld`
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then
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daemon=`which mysqld`
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else
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log_failure_msg "Unable to locate the mysqld binary!"
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exit 1
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fi
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help_out=`$daemon --help 2>&1`; r=$?
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if test "$r" != 0 ; then
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log_failure_msg "$help_out"
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log_failure_msg "There are syntax errors in the server configuration. Please fix them!"
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else
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log_success_msg "Syntax OK"
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fi
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exit $r
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;;
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'bootstrap')
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# Bootstrap the cluster, start the first node
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# that initiate the cluster
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echo -n "Bootstrapping the cluster.. "
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$0 start $other_args --wsrep-new-cluster
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exit $?
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;;
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*)
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# usage
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basename=`basename "$0"`
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echo "Usage: $basename {start|stop|restart|reload|force-reload|status|configtest|bootstrap} [ MySQL server options ]"
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exit 1
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;;
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esac
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exit 0
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