[packages/percona-server.git] / percona-server.init

#!/bin/sh
#
# mysql		A very fast and reliable SQL database engine
#
# chkconfig:	2345 84 25
#
# description:  A very fast and reliable SQL database engine.

# Source function library
. /etc/rc.d/init.d/functions

# Get network config
. /etc/sysconfig/network

# Get service config
if [ -f /etc/sysconfig/percona-server ]; then
	. /etc/sysconfig/percona-server
else
	nls "Error: %s not found" /etc/sysconfig/percona-server
	nls "%s can't be run." percona-server
	exit 1
fi

if [ -n "$MYSQL_DB_CLUSTERS" ]; then
	nls "Warning: MYSQL_DB_CLUSTERS is set. It's obsolete. Use %s instead." /etc/percona-server/clusters.conf
fi

if [ -f /etc/percona-server/clusters.conf ]; then
	MYSQL_DB_CLUSTERS=$(awk -F= '!/^#/ && /=/{print $2}' /etc/percona-server/clusters.conf)
	if [ -z "$MYSQL_DB_CLUSTERS" ]; then
		nls "Warning: there are no configured clusters."
	fi

else
	nls "Warning: Missing clusters config file %s" /etc/percona-server/clusters.conf
	if [ -z "$MYSQL_DB_CLUSTERS" ]; then
		nls "Warning: there are no configured clusters."
		nls "Using default cluster /var/lib/mysql (compatibility mode)"
		MYSQL_DB_CLUSTERS=/var/lib/mysql
	fi
fi


# Check that networking is up
if is_yes "${NETWORKING}"; then
	if [ ! -f /var/lock/subsys/network -a "$1" != stop -a "$1" != status -a "$1" != init ]; then
		msg_network_down percona-server
		exit 1
	fi
else
	exit 0
fi

sharedir=/usr/share/percona-server

action="$1"

# any db cluster as command line argument?
if [ $# -gt 1 ]; then
	shift
	# perform action for specified clusters only
	for a in "$@"; do
		# try auto resolving from /etc/percona-server/clusters.conf
		if [[ "$a" != /* ]]; then
			m=$(awk -va="$a" -F= 'substr($0, 1, length(a)) == a {print $1}' /etc/percona-server/clusters.conf)
			if [ -z "$m" ]; then
				echo >&2 "Cluster name '$a' did not match anything!"
				exit 1
			fi
			if [ $(echo "$m" | wc -l) -gt 1 ]; then
				echo >&2 "Cluster name '$a' ambiguous:" $m
				exit 1
			fi
			a=$(awk -va="$a" -F= 'substr($0, 1, length(a)) == a {print $2}' /etc/percona-server/clusters.conf)
		fi
		DB_CLUSTERS="$DB_CLUSTERS $a"
	done
else
	DB_CLUSTERS="$MYSQL_DB_CLUSTERS"
fi

# global error log, if mysqld.conf hasn't migrated to log-error style
MYSQL_ERRLOG=/var/log/percona-server/mysqld.log
MYSQL_STOP_WAIT_TIME=${MYSQL_STOP_WAIT_TIME:-900}

#
# Useful functions.
#

#
# check for percona-server status
#
# arguments:
# $1 - db cluster
# $2 - start|stop
#
# sets variables:
# MYSQL_STATUS = starting | running | not running | died
# MYSQL_PID    = pid of percona-server process
#
mysqlstatus() {
	clusterdir="$1"
	mode="$2"
	
	mysqlgetconfig "$clusterdir" status

	MYSQL_STATUS="not running"
	MYSQL_PID="unknown"
	MYSQL_PIDFILE_PID=""
	MYSQL_GREP_PID=""

	if [ -f "$MYSQL_PIDFILE" ]; then
		MYSQL_PIDFILE_PID=$(cat "$MYSQL_PIDFILE")
	fi
	
	if [ -n "$MYSQL_PIDFILE_PID" ]; then
		MYSQL_PID=$MYSQL_PIDFILE_PID
		if [ ! -d "/proc/$MYSQL_PID" ]; then
			MYSQL_STATUS="died"
			return
		elif (grep -qa "$MYSQL_PIDFILE" /proc/$MYSQL_PID/cmdline 2> /dev/null); then
			MYSQL_STATUS="running"
			return
		fi
	fi

	if [ "$mode" = "start" ]; then
		MYSQL_GREP_PID=$(grep -alE "^/usr/sbin/mysqld.*${MYSQL_PIDFILE}" /proc/[0-9]*/cmdline 2> /dev/null | awk -F "/" '{ print $3; exit; }')
		if [ -n "$MYSQL_GREP_PID" ]; then
			MYSQL_PID=$MYSQL_GREP_PID
			if grep -qa "$MYSQL_PIDFILE" /proc/$MYSQL_PID/cmdline 2> /dev/null; then
				if [ -f "$MYSQL_PIDFILE" ]; then
					MYSQL_PIDFILE_PID=$(cat "$MYSQL_PIDFILE")
				fi
				if [ -n "$MYSQL_PIDFILE_PID" ]; then
					MYSQL_PID=$MYSQL_PIDFILE_PID
					MYSQL_STATUS="running"
					return
				else
					MYSQL_STATUS="starting"
					return
				fi
			fi
		fi
	fi

	# else default, "not running"
}

# get mysql configuration in variables
# MYSQL_CONFIG MYSQL_CLUSTER_DIR
# MYSQL_DATA_DIR MYSQL_USER MYSQL_PIDFILE MYSQL_SOCKET MYSQL_PORT MYSQL_BIND_ADDRESS MYSQL_SKIP_NETWORKING MYSQL_LOG_ERROR
#
# arguments
# $1 - db cluster
# $2 - status | other

mysqlgetconfig() {
	local clusterdir="$1" config_file
	local mode="$2"

	# emulate old behaviour if only one cluster specified
	if [ "$clusterdir" = "$MYSQL_DB_CLUSTERS" -a "$clusterdir" = "/var/lib/mysql" -a -f /etc/mysqld.conf ]; then
		MYSQL_RA_COMPAT=yes
		config_file=/etc/mysqld.conf
	else
		local config=$(awk -F= -vclusterdir="$clusterdir" '!/^#/{ if (clusterdir == $2) print $1}' /etc/percona-server/clusters.conf)
		if [[ $config = /* ]]; then
			config_file="$config"
		elif [ -f "/etc/percona-server/$config" ]; then
			config_file="/etc/percona-server/$config"
		else
			config_file="$clusterdir/mysqld.conf"
		fi
	fi

	MYSQL_CLUSTER_DIR="$clusterdir"

	if [ -z "$config_file" ]; then
		nls "Error: Can't find config file for %s cluster" "$clusterdir"
		if [ "$mode" = "status" ]; then 
			exit 3
		else
			exit 6
		fi
	else
		MYSQL_CONFIG="$config_file"
	fi

	if [ ! -f "$config_file" ]; then
		nls "Error: config file %s not found" "$config_file"
		nls "percona-server can't be run. Did you initialize DB by doing \`$0 init'?"
		if [ "$mode" = "status" ]; then 
			exit 3
		else
			exit 6
		fi
	fi

	# reset to initial state
	MYSQL_DATA_DIR= MYSQL_USER= MYSQL_PIDFILE= MYSQL_SOCKET= MYSQL_PORT= MYSQL_BIND_ADDRESS= MYSQL_SKIP_NETWORKING= MYSQL_LOG_ERROR=

	eval `awk -F= '
	{
		# undos
		gsub(/\r$/, "");

		# trim spaces
		gsub(/^[\t ]+|[\t ]+$/, "", $1);
		gsub(/^[\t ]+|[\t ]+$/, "", $2);
	}

	# skip comments and empty lines
	/^[;#]|^ *$/ { next }

	/^[ \t]*\[.*\][ \t]*$/ {
		match($0, /\[.*\]/);
		section = substr($0, RSTART + 1, RSTART + RLENGTH - 3);
		next;
	}

	section == "mysqld" {
		if ($1 == "datadir") {
			printf("MYSQL_DATA_DIR=%s;", $2);
		} else if ($1 == "user") {
			printf("MYSQL_USER=%s;", $2);
		} else if ($1 == "pid-file") {
			printf("MYSQL_PIDFILE=%s;", $2);
		} else if ($1 == "socket") {
			printf("MYSQL_SOCKET=%s;", $2);
		} else if ($1 == "port") {
			printf("MYSQL_PORT=%s;", $2);
		} else if ($1 == "bind-address") {
			printf("MYSQL_BIND_ADDRESS=%s;", $2);
		} else if ($1 == "skip-networking") {
			printf("MYSQL_SKIP_NETWORKING=1;");
		} else if ($1 == "log-error") {
			printf("MYSQL_LOG_ERROR=%s;", $2);
		}
	}
	' $config_file`

	# error log not defined in config file. add one
	if [ -z "$MYSQL_LOG_ERROR" ]; then
		MYSQL_LOG_ERROR=$MYSQL_ERRLOG
	else
		# unset, so mysqld would use value from config itself
		unset MYSQL_LOG_ERROR
	fi

	if is_yes "$MYSQL_RA_COMPAT"; then
		MYSQL_DATA_DIR_SUB=""
	else
		MYSQL_DATA_DIR_SUB="/mysqldb"
	fi

	if [ -z "$MYSQL_DATA_DIR" -o "$MYSQL_DATA_DIR" != "${clusterdir}${MYSQL_DATA_DIR_SUB}/db" ]; then
		nls "Error: datadir specified in %s should be %s" "$config_file" "$clusterdir${MYSQL_DATA_DIR_SUB}/db"
		nls " percona-server can't be run."
		exit 6
	fi

	if [ -z "$MYSQL_PIDFILE" -o "$MYSQL_PIDFILE" != "$clusterdir${MYSQL_DATA_DIR_SUB}/mysql.pid" ]; then
		nls "Error: pid-file specified in %s should be %s" "$config_file" "$clusterdir${MYSQL_DATA_DIR_SUB}/mysql.pid"
		nls " percona-server can't be run."
		exit 6
	fi

	if [ -z "$MYSQL_USER" ]; then
		echo "$(nls 'percona-server user not configured properly')"'!' >&2
		nls "Edit %s and configure it." "$config_file" >&2
		exit 6
	fi
}

# start mysql
mysqlstart() {
	local clusterdir="$1"
	mysqlgetconfig "$clusterdir"
	if [ ! -d "$MYSQL_DATA_DIR/mysql" ]; then
		nls "percona-server cluster %s not initialized." "$clusterdir"
		nls "Try \`%s init %s' before start." "$0" "$clusterdir"
		exit 6
	fi

	msg_starting "percona-server $clusterdir"; busy
	[ -z "$DEFAULT_SERVICE_RUN_NICE_LEVEL" ] && DEFAULT_SERVICE_RUN_NICE_LEVEL=0
	rm -f "$MYSQL_PIDFILE"


	TMPDIR=/tmp nice -n ${SERVICE_RUN_NICE_LEVEL:-$DEFAULT_SERVICE_RUN_NICE_LEVEL} \
		/usr/bin/setsid /usr/sbin/mysqld \
			--defaults-file=$MYSQL_CONFIG \
			--datadir=$MYSQL_DATA_DIR \
			--pid-file=$MYSQL_PIDFILE \
			${MYSQL_LOG_ERROR:+--log-error="$MYSQL_LOG_ERROR"} \
			$MYSQL_OPTIONS &
	pid=$!

	sleep 0.1
	mysqlstatus "$clusterdir" start
	# it takes longer for mysqld to start and create pidfile if it has to recover innodb transactions
	if [ "$MYSQL_STATUS" = "starting" ]; then
		echo ""
		show "Waiting for percona-server to start"
		busy

		# while the pid is running, mysql is starting up
		# if the pidfile was created, it started up successfully
		# if either case fails we break and report status
		while true; do
			[ -d /proc/$pid ] || break
			[ -f "$MYSQL_PIDFILE" ] && break
			sleep 0.2
		done
	fi

	mysqlstatus "$clusterdir" start
	if [ "$MYSQL_STATUS" = "running" -a "$MYSQL_PID" != "unknown" ]; then
		ok
	elif [ "$MYSQL_STATUS" = "died" ]; then
		RETVAL=1
		died
	else
		RETVAL=1
		fail
	fi
}

# stop mysql
mysqlstop() {
	local clusterdir="$1"
	mysqlstatus "$clusterdir" stop
	msg_stopping "percona-server $clusterdir"
	busy

	# try graceful shutdown -- send shutdown command
	# requires mysql_sysadmin user proper privs
	/usr/bin/mysqladmin --defaults-file=$MYSQL_CONFIG ${MYSQL_SOCKET:+--socket=$MYSQL_SOCKET} shutdown >/dev/null 2>&1
	mysqlstatus "$clusterdir" stop

	if [ "$MYSQL_PID" != "unknown" ]; then
		kill -TERM "$MYSQL_PID" 2> /dev/null
		for nr in $(seq 1 $(($MYSQL_STOP_WAIT_TIME*10))); do
			[ -d "/proc/$MYSQL_PID" ] || break
			sleep 0.1
		done
	fi
	
	mysqlstatus "$clusterdir" stop
	if [ "$MYSQL_STATUS" = "died" ]; then
		died
	elif [ "$MYSQL_STATUS" = "running" -o "$MYSQL_STATUS" = "starting" ]; then
		fail
	else
		ok
	fi
}

# report slave status
# uses MYSQL_SOCKET - path to mysql socket
slave_status() {
	if [ ! -x /usr/bin/mysql ]; then
		echo >&2 "Slave status not available: 'mysql' program not installed."
		return
	fi

	# see if slave status can be reported
	local err=0 slave_status=$(mysql --defaults-file="$MYSQL_CONFIG" --socket="$MYSQL_SOCKET" -e 'show slave status\G')
	if [ -z "$slave_status" ]; then
		# slave not setup
		return
	fi

	printf "Slave Status:\n"

	set -f
	eval $(echo "$slave_status" | awk -F': ' '/^ *[A-Za-z_]+:/{
		k = tolower($1);
		v = substr($0, length($1) + 3);
		gsub(/\\/, "\\\\\\", v);
		gsub(/"/, "\\\"", v);
		gsub(/`/, "\\`", v);
		gsub(/\$/, "\\$", v);
		gsub(/\$/, "\\$", v);
		printf("%s=\"%s\";\n", k, v);
	}')
	set +f

	if [ "$slave_io_running" != "Yes" ]; then
		printf "\tSlave IO not running\n"
		err=1
	fi
	if [ "$slave_sql_running" != "Yes" ]; then
		printf "\tSlave SQL not running\n"
		err=1
	fi

	if [ "$err" = 1 -a "$last_errno" -gt 0 ]; then
		printf "\tERROR %s: %s\n" "$last_errno" "$last_error"
	fi

	if [ "$master_log_file" != "$relay_master_log_file" ]; then
		printf "\tERROR logfile mismatch (%s)\n" "$relay_master_log_file"
		err=1
	fi

	if [ -z "$read_master_log_pos" -o -z "$exec_master_log_pos" ]; then
		printf "\tERROR No info about master\n"
		err=1
		return
	fi

	diff=$(($read_master_log_pos - $exec_master_log_pos))
	printf "\tread pos: %s (%s) (host: %s:%d)\n" "$read_master_log_pos" "$master_log_file" "$master_host" "$master_port"
	printf "\texec pos: %s\n" "$exec_master_log_pos"
	printf "\tdiff: %s\n" "$diff"
}

#
# check for running mysql instances; if any instance is running then
# create subsys lock file
#
mysqlsubsys() {
	# check for every defined db cluster in sysconfig file
	for mysqldir in $DB_CLUSTERS; do
		mysqlstatus "$mysqldir"
		if [ "$MYSQL_STATUS" = "running" ]; then
			touch /var/lock/subsys/percona-server
			return
		fi
	done
	rm -f /var/lock/subsys/percona-server
}

mysqlinit() {
	local clusterdir="$1"

	if [ -f /etc/mysqld.conf ]; then
		nls "Running in \`no cluster compat' mode: can't initialize database."
		nls "Move /etc/mysqld.conf away and rerun \`$0 init' (new config will be in $clusterdir)."
		exit 1
	fi

	if [ -f "$clusterdir/mysqld.conf" ]; then
		mysqlgetconfig "$clusterdir"
	else
		MYSQL_USER="mysql"
		MYSQL_CLUSTER_DIR="$clusterdir"
		MYSQL_DATA_DIR="$clusterdir/mysqldb/db"
		MYSQL_PIDFILE="$clusterdir/mysqldb/mysql.pid"
		MYSQL_SOCKET="$clusterdir/mysqldb/mysql.sock"

		# this $MYSQL_CONFIG will be created later
		MYSQL_CONFIG="$MYSQL_CLUSTER_DIR/mysqld.conf"
	fi

	show "Initializing percona-server cluster %s" "$clusterdir"; started

	# Check if not exist init database
	if [ -d "$MYSQL_DATA_DIR/percona-server" ]; then
		nls "Seems that database is initialized now. Remove by hand %s" "$MYSQL_DATA_DIR/percona-server"
		nls "before initializing database."
		nls "For now skipping cluster %s." "$clusterdir"
		exit 6
	fi

	show "Installing percona-server system tables for $MYSQL_DATA_DIR"
	busy
	TMP=/tmp TMPDIR=/tmp

	mkdir -p "$MYSQL_DATA_DIR" > /dev/null 2>&1
	# Using mysql:mysql for MYSQL_CLUSTER_DIR is creating SECURITY hole, root:root is proper
	chown root:root "$MYSQL_CLUSTER_DIR"
	chown mysql:mysql "$MYSQL_CLUSTER_DIR/mysqldb" "$MYSQL_DATA_DIR" > /dev/null 2>&1
	chmod 751 "$MYSQL_CLUSTER_DIR" "$MYSQL_CLUSTER_DIR/mysqldb"

	if [ -f $sharedir/mysqld.conf -a ! -f "$MYSQL_CLUSTER_DIR/mysqld.conf" ]; then
		sed -e "
			s#\(datadir.*\)=.*#\1= $MYSQL_DATA_DIR#g;
			s#\(pid-file.*\)=.*#\1= $MYSQL_PIDFILE#g;
			s#\(socket.*\)=.*#\1= $MYSQL_SOCKET#g;
			s#@clusterdir@#$MYSQL_CLUSTER_DIR#g;
		" $sharedir/mysqld.conf > "$MYSQL_CLUSTER_DIR/mysqld.conf"
		chown root:root "$MYSQL_CLUSTER_DIR/mysqld.conf"
		chmod 640 "$MYSQL_CLUSTER_DIR/mysqld.conf"
	fi

	ok=0
	/usr/sbin/mysqld \
		--defaults-file=$MYSQL_CLUSTER_DIR/mysqld.conf \
		--initialize-insecure \
		--user=mysql \
		--skip-grant-tables \
		--datadir=$MYSQL_DATA_DIR \
		--user=$MYSQL_USER \
		--slave-load-tmpdir=$MYSQL_DATA_DIR \
		--tmpdir=$MYSQL_DATA_DIR \
		--log-error=$MYSQL_ERRLOG && ok=1
	[ -f $MYSQL_DATA_DIR/mysql/user.frm ] || ok=0

	if [ "$ok" = 1 ]; then
		ok
		cat << END_OF_MSG

PLEASE REMEMBER TO SET A PASSWORD FOR THE percona-server USERS!
This is done, after starting database, in the order shown below,
with:

Add 'mysql_sysadmin' user (RELOAD and SHUTDOWN privileges):
echo "CREATE USER 'mysql_sysadmin'@'localhost' IDENTIFIED BY 'SOME_RANDOM_PASSWORD'; FLUSH PRIVILEGES;" | mysql --ssl-mode=DISABLED -u root -S $MYSQL_SOCKET
echo "GRANT RELOAD, SHUTDOWN ON *.* TO 'mysql_sysadmin'@'localhost'; FLUSH PRIVILEGES;" | mysql --ssl-mode=DISABLED -u root -S $MYSQL_SOCKET

Set password for root user (ALL privileges, DB admin):
echo "ALTER USER 'root'@'localhost' IDENTIFIED BY 'newpassword'; FLUSH PRIVILEGES;" | mysql --ssl-mode=DISABLED -u root -S $MYSQL_SOCKET

NOTE: mysql_sysadmin password should be placed to $MYSQL_CONFIG in
mysqladmin section. See the manual for more instructions.
(This user is used at logs rotation and server shutdown)

END_OF_MSG
	else
		fail
		cat << END_OF_MSG
ERROR:
ERROR:
ERROR: Initialization of server FAILED!
ERROR:
ERROR:

Examine the logs in /var/log/percona-server for more information. You can
also try to start the mysqld daemon with:

/usr/sbin/mysqld --skip-grant &

You can use the command line tool mysql to connect to the mysql
database and look at the grant tables:

shell> mysql -u root mysql
mysql> show tables

Try 'mysqld --help' if you have problems with paths. Setting on
logging in $MYSQL_DATA_DIR/mysqld.conf gives you a log in /var/log/percona-server/query.log that
may be helpful. The latest information about percona-server is available on the
web at https://www.percona.com/software/mysql-database/percona-server.

Please check PLD Linux ftp site for newer versions of this package.

Please consult the percona-server manual section: 'Problems running
mysql_install_db', and the manual section that describes problems on
your OS. Another information source is the percona-server email archive.

END_OF_MSG
		exit 1
	fi

	# if it's first server, register as default
	if [ ! -e /var/lib/mysql/mysql.sock ] || [ -L /var/lib/mysql/mysql.sock ] && [ -z "$(readlink /var/lib/mysql/mysql.sock)" ]; then
		sock=${MYSQL_SOCKET#/var/lib/mysql/} # make it relative if possible
		ln -s "$sock" /var/lib/mysql/mysql.sock
	fi
	# same for config, move to /etc
	if [ ! -e /etc/percona-server/mysqld.conf ]; then
		mv "$MYSQL_CLUSTER_DIR/mysqld.conf" /etc/percona-server/mysqld.conf
	fi
}

#
# End of useful functions.
#

start() {
	local mysqldir
	for mysqldir in $DB_CLUSTERS; do
		mysqlstatus "$mysqldir" start
		if [ "$MYSQL_STATUS" = "running" ]; then
			msg_already_running "percona-server $mysqldir"
		else
			mysqlstart "$mysqldir"
		fi
	done
	mysqlsubsys
}

stop() {
	local mysqldir
	for mysqldir in $DB_CLUSTERS; do
		mysqlstatus "$mysqldir" stop
		if [ "$MYSQL_STATUS" = "not running" ]; then
			msg_not_running "percona-server $mysqldir"
		else
			mysqlstop "$mysqldir"
		fi
	done
	mysqlsubsys
}

condrestart() {
	if [ ! -f /var/lock/subsys/percona-server ]; then
		msg_not_running "percona-server"
		RETVAL=$1
		return
	fi

	stop
	start
}

status() {
	local mysqldir addr port socket pid pids running datadir 
	RETVAL=3
	for mysqldir in $DB_CLUSTERS; do
		mysqlstatus "$mysqldir"
		if [ "$MYSQL_STATUS" = "running" ]; then
			RETVAL=0
			addr=${MYSQL_BIND_ADDRESS:-0.0.0.0}
			port=${MYSQL_PORT:-3306}
			socket=${MYSQL_SOCKET:-/var/lib/mysql/mysql.sock}
			pid=$MYSQL_PID
			nls "percona-server cluster %s, pid %s\n" "$mysqldir" "$pid"
			[ -z "$MYSQL_SKIP_NETWORKING" ] && nls "\ttcp:%s:%s\n" "$addr" "$port"
			nls "\tunix: %s\n" "$socket"

			MYSQL_SOCKET=$socket slave_status

			pids="$pids/$MYSQL_PID/"
			progress "$MYSQL_STATUS"
		else
			show "percona-server cluster %s" "$mysqldir"
			progress "$MYSQL_STATUS" "$CFAIL"
		fi
		echo
	done

	for pid in $(/sbin/pidof mysqld); do
		if [[ $pids != */$pid/* ]]; then
			running="$running $pid"
		fi
	done

	if [ $# = 1 -a "$running" ]; then
		nls "Warning: percona-server Daemon processes not under clusters.conf control:"
		# see if we can display their status
		for pid in $running; do
			datadir=$(cat /proc/$pid/cmdline | tr '\0' '\n' | fgrep -- --datadir=)
			datadir=${datadir#--datadir=} # strip --datadir
			mysqldir=${datadir%/mysqldb/db} # strip /mysqldb/db
			mysqlstatus "$mysqldir"
			if [ "$MYSQL_STATUS" = "running" ]; then
				addr=${MYSQL_BIND_ADDRESS:-0.0.0.0}
				port=${MYSQL_PORT:-3306}
				socket=${MYSQL_SOCKET:-/var/lib/mysql/mysql.sock}
				nls "percona-server cluster %s, pid %s\n" "$mysqldir" "$pid"
				[ -z "$MYSQL_SKIP_NETWORKING" ] && nls "\ttcp:%s:%s\n" "$addr" "$port"
				nls "\tunix: %s\n" "$socket"

				MYSQL_SOCKET=$socket slave_status

				progress "$MYSQL_STATUS"
			else
				show "percona-server cluster %s" "$mysqldir"
				progress "$MYSQL_STATUS" "$CFAIL"
			fi
			echo
		done
	fi
}

RETVAL=0
case "$action" in
  start)
	start
	;;
  stop)
	stop
	;;
  restart)
	stop
	start
	;;
  try-restart)
	condrestart 0
	;;
  force-reload)
	condrestart 7
	;;
  init)
	for mysqldir in $DB_CLUSTERS; do
		mysqlinit "$mysqldir"
	done
	exit $?
	;;
  flush-logs)
	for mysqldir in $DB_CLUSTERS; do
		mysqlgetconfig "$mysqldir"
		# just if mysqld is really running
		if /usr/bin/mysqladmin --defaults-file="$MYSQL_CONFIG" --socket="$MYSQL_SOCKET" ping >/dev/null 2>&1; then
			/usr/bin/mysqladmin --defaults-file="$MYSQL_CONFIG" --socket="$MYSQL_SOCKET" flush-logs
		fi
	done
	;;
  status)
	status
	;;
  *)
	msg_usage "$0 {start|stop|restart|try-restart|force-reload|init|flush-logs|status}"
	exit 3
esac

exit $RETVAL
Commit	Line	Data
	1	#!/bin/sh
	2	#
	3	# mysql A very fast and reliable SQL database engine
	4	#
	5	# chkconfig: 2345 84 25
	6	#
	7	# description: A very fast and reliable SQL database engine.
	8
	9	# Source function library
	10	. /etc/rc.d/init.d/functions
	11
	12	# Get network config
	13	. /etc/sysconfig/network
	14
	15	# Get service config
	16	if [ -f /etc/sysconfig/percona-server ]; then
	17	. /etc/sysconfig/percona-server
	18	else
	19	nls "Error: %s not found" /etc/sysconfig/percona-server
	20	nls "%s can't be run." percona-server
	21	exit 1
	22	fi
	23
	24	if [ -n "$MYSQL_DB_CLUSTERS" ]; then
	25	nls "Warning: MYSQL_DB_CLUSTERS is set. It's obsolete. Use %s instead." /etc/percona-server/clusters.conf
	26	fi
	27
	28	if [ -f /etc/percona-server/clusters.conf ]; then
	29	MYSQL_DB_CLUSTERS=$(awk -F= '!/^#/ && /=/{print $2}' /etc/percona-server/clusters.conf)
	30	if [ -z "$MYSQL_DB_CLUSTERS" ]; then
	31	nls "Warning: there are no configured clusters."
	32	fi
	33
	34	else
	35	nls "Warning: Missing clusters config file %s" /etc/percona-server/clusters.conf
	36	if [ -z "$MYSQL_DB_CLUSTERS" ]; then
	37	nls "Warning: there are no configured clusters."
	38	nls "Using default cluster /var/lib/mysql (compatibility mode)"
	39	MYSQL_DB_CLUSTERS=/var/lib/mysql
	40	fi
	41	fi
	42
	43
	44	# Check that networking is up
	45	if is_yes "${NETWORKING}"; then
	46	if [ ! -f /var/lock/subsys/network -a "$1" != stop -a "$1" != status -a "$1" != init ]; then
	47	msg_network_down percona-server
	48	exit 1
	49	fi
	50	else
	51	exit 0
	52	fi
	53
	54	sharedir=/usr/share/percona-server
	55
	56	action="$1"
	57
	58	# any db cluster as command line argument?
	59	if [ $# -gt 1 ]; then
	60	shift
	61	# perform action for specified clusters only
	62	for a in "$@"; do
	63	# try auto resolving from /etc/percona-server/clusters.conf
	64	if [[ "$a" != /* ]]; then
	65	m=$(awk -va="$a" -F= 'substr($0, 1, length(a)) == a {print $1}' /etc/percona-server/clusters.conf)
	66	if [ -z "$m" ]; then
	67	echo >&2 "Cluster name '$a' did not match anything!"
	68	exit 1
	69	fi
	70	if [ $(echo "$m" \| wc -l) -gt 1 ]; then
	71	echo >&2 "Cluster name '$a' ambiguous:" $m
	72	exit 1
	73	fi
	74	a=$(awk -va="$a" -F= 'substr($0, 1, length(a)) == a {print $2}' /etc/percona-server/clusters.conf)
	75	fi
	76	DB_CLUSTERS="$DB_CLUSTERS $a"
	77	done
	78	else
	79	DB_CLUSTERS="$MYSQL_DB_CLUSTERS"
	80	fi
	81
	82	# global error log, if mysqld.conf hasn't migrated to log-error style
	83	MYSQL_ERRLOG=/var/log/percona-server/mysqld.log
	84	MYSQL_STOP_WAIT_TIME=${MYSQL_STOP_WAIT_TIME:-900}
	85
	86	#
	87	# Useful functions.
	88	#
	89
	90	#
	91	# check for percona-server status
	92	#
	93	# arguments:
	94	# $1 - db cluster
	95	# $2 - start\|stop
	96	#
	97	# sets variables:
	98	# MYSQL_STATUS = starting \| running \| not running \| died
	99	# MYSQL_PID = pid of percona-server process
	100	#
	101	mysqlstatus() {
	102	clusterdir="$1"
	103	mode="$2"
	104
	105	mysqlgetconfig "$clusterdir" status
	106
	107	MYSQL_STATUS="not running"
	108	MYSQL_PID="unknown"
	109	MYSQL_PIDFILE_PID=""
	110	MYSQL_GREP_PID=""
	111
	112	if [ -f "$MYSQL_PIDFILE" ]; then
	113	MYSQL_PIDFILE_PID=$(cat "$MYSQL_PIDFILE")
	114	fi
	115
	116	if [ -n "$MYSQL_PIDFILE_PID" ]; then
	117	MYSQL_PID=$MYSQL_PIDFILE_PID
	118	if [ ! -d "/proc/$MYSQL_PID" ]; then
	119	MYSQL_STATUS="died"
	120	return
	121	elif (grep -qa "$MYSQL_PIDFILE" /proc/$MYSQL_PID/cmdline 2> /dev/null); then
	122	MYSQL_STATUS="running"
	123	return
	124	fi
	125	fi
	126
	127	if [ "$mode" = "start" ]; then
	128	MYSQL_GREP_PID=$(grep -alE "^/usr/sbin/mysqld.${MYSQL_PIDFILE}" /proc/[0-9]/cmdline 2> /dev/null \| awk -F "/" '{ print $3; exit; }')
	129	if [ -n "$MYSQL_GREP_PID" ]; then
	130	MYSQL_PID=$MYSQL_GREP_PID
	131	if grep -qa "$MYSQL_PIDFILE" /proc/$MYSQL_PID/cmdline 2> /dev/null; then
	132	if [ -f "$MYSQL_PIDFILE" ]; then
	133	MYSQL_PIDFILE_PID=$(cat "$MYSQL_PIDFILE")
	134	fi
	135	if [ -n "$MYSQL_PIDFILE_PID" ]; then
	136	MYSQL_PID=$MYSQL_PIDFILE_PID
	137	MYSQL_STATUS="running"
	138	return
	139	else
	140	MYSQL_STATUS="starting"
	141	return
	142	fi
	143	fi
	144	fi
	145	fi
	146
	147	# else default, "not running"
	148	}
	149
	150	# get mysql configuration in variables
	151	# MYSQL_CONFIG MYSQL_CLUSTER_DIR
	152	# MYSQL_DATA_DIR MYSQL_USER MYSQL_PIDFILE MYSQL_SOCKET MYSQL_PORT MYSQL_BIND_ADDRESS MYSQL_SKIP_NETWORKING MYSQL_LOG_ERROR
	153	#
	154	# arguments
	155	# $1 - db cluster
	156	# $2 - status \| other
	157
	158	mysqlgetconfig() {
	159	local clusterdir="$1" config_file
	160	local mode="$2"
	161
	162	# emulate old behaviour if only one cluster specified
	163	if [ "$clusterdir" = "$MYSQL_DB_CLUSTERS" -a "$clusterdir" = "/var/lib/mysql" -a -f /etc/mysqld.conf ]; then
	164	MYSQL_RA_COMPAT=yes
	165	config_file=/etc/mysqld.conf
	166	else
	167	local config=$(awk -F= -vclusterdir="$clusterdir" '!/^#/{ if (clusterdir == $2) print $1}' /etc/percona-server/clusters.conf)
	168	if [[ $config = /* ]]; then
	169	config_file="$config"
	170	elif [ -f "/etc/percona-server/$config" ]; then
	171	config_file="/etc/percona-server/$config"
	172	else
	173	config_file="$clusterdir/mysqld.conf"
	174	fi
	175	fi
	176
	177	MYSQL_CLUSTER_DIR="$clusterdir"
	178
	179	if [ -z "$config_file" ]; then
	180	nls "Error: Can't find config file for %s cluster" "$clusterdir"
	181	if [ "$mode" = "status" ]; then
	182	exit 3
	183	else
	184	exit 6
	185	fi
	186	else
	187	MYSQL_CONFIG="$config_file"
	188	fi
	189
	190	if [ ! -f "$config_file" ]; then
	191	nls "Error: config file %s not found" "$config_file"
	192	nls "percona-server can't be run. Did you initialize DB by doing \`$0 init'?"
	193	if [ "$mode" = "status" ]; then
	194	exit 3
	195	else
	196	exit 6
	197	fi
	198	fi
	199
	200	# reset to initial state
	201	MYSQL_DATA_DIR= MYSQL_USER= MYSQL_PIDFILE= MYSQL_SOCKET= MYSQL_PORT= MYSQL_BIND_ADDRESS= MYSQL_SKIP_NETWORKING= MYSQL_LOG_ERROR=
	202
	203	eval `awk -F= '
	204	{
	205	# undos
	206	gsub(/\r$/, "");
	207
	208	# trim spaces
	209	gsub(/^[\t ]+\|[\t ]+$/, "", $1);
	210	gsub(/^[\t ]+\|[\t ]+$/, "", $2);
	211	}
	212
	213	# skip comments and empty lines
	214	/^[;#]\|^ *$/ { next }
	215
	216	/^[ \t]\[.\][ \t]*$/ {
	217	match($0, /\[.*\]/);
	218	section = substr($0, RSTART + 1, RSTART + RLENGTH - 3);
	219	next;
	220	}
	221
	222	section == "mysqld" {
	223	if ($1 == "datadir") {
	224	printf("MYSQL_DATA_DIR=%s;", $2);
	225	} else if ($1 == "user") {
	226	printf("MYSQL_USER=%s;", $2);
	227	} else if ($1 == "pid-file") {
	228	printf("MYSQL_PIDFILE=%s;", $2);
	229	} else if ($1 == "socket") {
	230	printf("MYSQL_SOCKET=%s;", $2);
	231	} else if ($1 == "port") {
	232	printf("MYSQL_PORT=%s;", $2);
	233	} else if ($1 == "bind-address") {
	234	printf("MYSQL_BIND_ADDRESS=%s;", $2);
	235	} else if ($1 == "skip-networking") {
	236	printf("MYSQL_SKIP_NETWORKING=1;");
	237	} else if ($1 == "log-error") {
	238	printf("MYSQL_LOG_ERROR=%s;", $2);
	239	}
	240	}
	241	' $config_file`
	242
	243	# error log not defined in config file. add one
	244	if [ -z "$MYSQL_LOG_ERROR" ]; then
	245	MYSQL_LOG_ERROR=$MYSQL_ERRLOG
	246	else
	247	# unset, so mysqld would use value from config itself
	248	unset MYSQL_LOG_ERROR
	249	fi
	250
	251	if is_yes "$MYSQL_RA_COMPAT"; then
	252	MYSQL_DATA_DIR_SUB=""
	253	else
	254	MYSQL_DATA_DIR_SUB="/mysqldb"
	255	fi
	256
	257	if [ -z "$MYSQL_DATA_DIR" -o "$MYSQL_DATA_DIR" != "${clusterdir}${MYSQL_DATA_DIR_SUB}/db" ]; then
	258	nls "Error: datadir specified in %s should be %s" "$config_file" "$clusterdir${MYSQL_DATA_DIR_SUB}/db"
	259	nls " percona-server can't be run."
	260	exit 6
	261	fi
	262
	263	if [ -z "$MYSQL_PIDFILE" -o "$MYSQL_PIDFILE" != "$clusterdir${MYSQL_DATA_DIR_SUB}/mysql.pid" ]; then
	264	nls "Error: pid-file specified in %s should be %s" "$config_file" "$clusterdir${MYSQL_DATA_DIR_SUB}/mysql.pid"
	265	nls " percona-server can't be run."
	266	exit 6
	267	fi
	268
	269	if [ -z "$MYSQL_USER" ]; then
	270	echo "$(nls 'percona-server user not configured properly')"'!' >&2
	271	nls "Edit %s and configure it." "$config_file" >&2
	272	exit 6
	273	fi
	274	}
	275
	276	# start mysql
	277	mysqlstart() {
	278	local clusterdir="$1"
	279	mysqlgetconfig "$clusterdir"
	280	if [ ! -d "$MYSQL_DATA_DIR/mysql" ]; then
	281	nls "percona-server cluster %s not initialized." "$clusterdir"
	282	nls "Try \`%s init %s' before start." "$0" "$clusterdir"
	283	exit 6
	284	fi
	285
	286	msg_starting "percona-server $clusterdir"; busy
	287	[ -z "$DEFAULT_SERVICE_RUN_NICE_LEVEL" ] && DEFAULT_SERVICE_RUN_NICE_LEVEL=0
	288	rm -f "$MYSQL_PIDFILE"
	289
	290
	291	TMPDIR=/tmp nice -n ${SERVICE_RUN_NICE_LEVEL:-$DEFAULT_SERVICE_RUN_NICE_LEVEL} \
	292	/usr/bin/setsid /usr/sbin/mysqld \
	293	--defaults-file=$MYSQL_CONFIG \
	294	--datadir=$MYSQL_DATA_DIR \
	295	--pid-file=$MYSQL_PIDFILE \
	296	${MYSQL_LOG_ERROR:+--log-error="$MYSQL_LOG_ERROR"} \
	297	$MYSQL_OPTIONS &
	298	pid=$!
	299
	300	sleep 0.1
	301	mysqlstatus "$clusterdir" start
	302	# it takes longer for mysqld to start and create pidfile if it has to recover innodb transactions
	303	if [ "$MYSQL_STATUS" = "starting" ]; then
	304	echo ""
	305	show "Waiting for percona-server to start"
	306	busy
	307
	308	# while the pid is running, mysql is starting up
	309	# if the pidfile was created, it started up successfully
	310	# if either case fails we break and report status
	311	while true; do
	312	[ -d /proc/$pid ] \|\| break
	313	[ -f "$MYSQL_PIDFILE" ] && break
	314	sleep 0.2
	315	done
	316	fi
	317
	318	mysqlstatus "$clusterdir" start
	319	if [ "$MYSQL_STATUS" = "running" -a "$MYSQL_PID" != "unknown" ]; then
	320	ok
	321	elif [ "$MYSQL_STATUS" = "died" ]; then
	322	RETVAL=1
	323	died
	324	else
	325	RETVAL=1
	326	fail
	327	fi
	328	}
	329
	330	# stop mysql
	331	mysqlstop() {
	332	local clusterdir="$1"
	333	mysqlstatus "$clusterdir" stop
	334	msg_stopping "percona-server $clusterdir"
	335	busy
	336
	337	# try graceful shutdown -- send shutdown command
	338	# requires mysql_sysadmin user proper privs
	339	/usr/bin/mysqladmin --defaults-file=$MYSQL_CONFIG ${MYSQL_SOCKET:+--socket=$MYSQL_SOCKET} shutdown >/dev/null 2>&1
	340	mysqlstatus "$clusterdir" stop
	341
	342	if [ "$MYSQL_PID" != "unknown" ]; then
	343	kill -TERM "$MYSQL_PID" 2> /dev/null
	344	for nr in $(seq 1 $(($MYSQL_STOP_WAIT_TIME*10))); do
	345	[ -d "/proc/$MYSQL_PID" ] \|\| break
	346	sleep 0.1
	347	done
	348	fi
	349
	350	mysqlstatus "$clusterdir" stop
	351	if [ "$MYSQL_STATUS" = "died" ]; then
	352	died
	353	elif [ "$MYSQL_STATUS" = "running" -o "$MYSQL_STATUS" = "starting" ]; then
	354	fail
	355	else
	356	ok
	357	fi
	358	}
	359
	360	# report slave status
	361	# uses MYSQL_SOCKET - path to mysql socket
	362	slave_status() {
	363	if [ ! -x /usr/bin/mysql ]; then
	364	echo >&2 "Slave status not available: 'mysql' program not installed."
	365	return
	366	fi
	367
	368	# see if slave status can be reported
	369	local err=0 slave_status=$(mysql --defaults-file="$MYSQL_CONFIG" --socket="$MYSQL_SOCKET" -e 'show slave status\G')
	370	if [ -z "$slave_status" ]; then
	371	# slave not setup
	372	return
	373	fi
	374
	375	printf "Slave Status:\n"
	376
	377	set -f
	378	eval $(echo "$slave_status" \| awk -F': ' '/^ *[A-Za-z_]+:/{
	379	k = tolower($1);
	380	v = substr($0, length($1) + 3);
	381	gsub(/\\/, "\\\\\\", v);
	382	gsub(/"/, "\\\"", v);
	383	gsub(/`/, "\\`", v);
	384	gsub(/\$/, "\\$", v);
	385	gsub(/\$/, "\\$", v);
	386	printf("%s=\"%s\";\n", k, v);
	387	}')
	388	set +f
	389
	390	if [ "$slave_io_running" != "Yes" ]; then
	391	printf "\tSlave IO not running\n"
	392	err=1
	393	fi
	394	if [ "$slave_sql_running" != "Yes" ]; then
	395	printf "\tSlave SQL not running\n"
	396	err=1
	397	fi
	398
	399	if [ "$err" = 1 -a "$last_errno" -gt 0 ]; then
	400	printf "\tERROR %s: %s\n" "$last_errno" "$last_error"
	401	fi
	402
	403	if [ "$master_log_file" != "$relay_master_log_file" ]; then
	404	printf "\tERROR logfile mismatch (%s)\n" "$relay_master_log_file"
	405	err=1
	406	fi
	407
	408	if [ -z "$read_master_log_pos" -o -z "$exec_master_log_pos" ]; then
	409	printf "\tERROR No info about master\n"
	410	err=1
	411	return
	412	fi
	413
	414	diff=$(($read_master_log_pos - $exec_master_log_pos))
	415	printf "\tread pos: %s (%s) (host: %s:%d)\n" "$read_master_log_pos" "$master_log_file" "$master_host" "$master_port"
	416	printf "\texec pos: %s\n" "$exec_master_log_pos"
	417	printf "\tdiff: %s\n" "$diff"
	418	}
	419
	420	#
	421	# check for running mysql instances; if any instance is running then
	422	# create subsys lock file
	423	#
	424	mysqlsubsys() {
	425	# check for every defined db cluster in sysconfig file
	426	for mysqldir in $DB_CLUSTERS; do
	427	mysqlstatus "$mysqldir"
	428	if [ "$MYSQL_STATUS" = "running" ]; then
	429	touch /var/lock/subsys/percona-server
	430	return
	431	fi
	432	done
	433	rm -f /var/lock/subsys/percona-server
	434	}
	435
	436	mysqlinit() {
	437	local clusterdir="$1"
	438
	439	if [ -f /etc/mysqld.conf ]; then
	440	nls "Running in \`no cluster compat' mode: can't initialize database."
	441	nls "Move /etc/mysqld.conf away and rerun \`$0 init' (new config will be in $clusterdir)."
	442	exit 1
	443	fi
	444
	445	if [ -f "$clusterdir/mysqld.conf" ]; then
	446	mysqlgetconfig "$clusterdir"
	447	else
	448	MYSQL_USER="mysql"
	449	MYSQL_CLUSTER_DIR="$clusterdir"
	450	MYSQL_DATA_DIR="$clusterdir/mysqldb/db"
	451	MYSQL_PIDFILE="$clusterdir/mysqldb/mysql.pid"
	452	MYSQL_SOCKET="$clusterdir/mysqldb/mysql.sock"
	453
	454	# this $MYSQL_CONFIG will be created later
	455	MYSQL_CONFIG="$MYSQL_CLUSTER_DIR/mysqld.conf"
	456	fi
	457
	458	show "Initializing percona-server cluster %s" "$clusterdir"; started
	459
	460	# Check if not exist init database
	461	if [ -d "$MYSQL_DATA_DIR/percona-server" ]; then
	462	nls "Seems that database is initialized now. Remove by hand %s" "$MYSQL_DATA_DIR/percona-server"
	463	nls "before initializing database."
	464	nls "For now skipping cluster %s." "$clusterdir"
	465	exit 6
	466	fi
	467
	468	show "Installing percona-server system tables for $MYSQL_DATA_DIR"
	469	busy
	470	TMP=/tmp TMPDIR=/tmp
	471
	472	mkdir -p "$MYSQL_DATA_DIR" > /dev/null 2>&1
	473	# Using mysql:mysql for MYSQL_CLUSTER_DIR is creating SECURITY hole, root:root is proper
	474	chown root:root "$MYSQL_CLUSTER_DIR"
	475	chown mysql:mysql "$MYSQL_CLUSTER_DIR/mysqldb" "$MYSQL_DATA_DIR" > /dev/null 2>&1
	476	chmod 751 "$MYSQL_CLUSTER_DIR" "$MYSQL_CLUSTER_DIR/mysqldb"
	477
	478	if [ -f $sharedir/mysqld.conf -a ! -f "$MYSQL_CLUSTER_DIR/mysqld.conf" ]; then
	479	sed -e "
	480	s#\(datadir.\)=.#\1= $MYSQL_DATA_DIR#g;
	481	s#\(pid-file.\)=.#\1= $MYSQL_PIDFILE#g;
	482	s#\(socket.\)=.#\1= $MYSQL_SOCKET#g;
	483	s#@clusterdir@#$MYSQL_CLUSTER_DIR#g;
	484	" $sharedir/mysqld.conf > "$MYSQL_CLUSTER_DIR/mysqld.conf"
	485	chown root:root "$MYSQL_CLUSTER_DIR/mysqld.conf"
	486	chmod 640 "$MYSQL_CLUSTER_DIR/mysqld.conf"
	487	fi
	488
	489	ok=0
	490	/usr/sbin/mysqld \
	491	--defaults-file=$MYSQL_CLUSTER_DIR/mysqld.conf \
	492	--initialize-insecure \
	493	--user=mysql \
	494	--skip-grant-tables \
	495	--datadir=$MYSQL_DATA_DIR \
	496	--user=$MYSQL_USER \
	497	--slave-load-tmpdir=$MYSQL_DATA_DIR \
	498	--tmpdir=$MYSQL_DATA_DIR \
	499	--log-error=$MYSQL_ERRLOG && ok=1
	500	[ -f $MYSQL_DATA_DIR/mysql/user.frm ] \|\| ok=0
	501
	502	if [ "$ok" = 1 ]; then
	503	ok
	504	cat << END_OF_MSG
	505
	506	PLEASE REMEMBER TO SET A PASSWORD FOR THE percona-server USERS!
	507	This is done, after starting database, in the order shown below,
	508	with:
	509
	510	Add 'mysql_sysadmin' user (RELOAD and SHUTDOWN privileges):
	511	echo "CREATE USER 'mysql_sysadmin'@'localhost' IDENTIFIED BY 'SOME_RANDOM_PASSWORD'; FLUSH PRIVILEGES;" \| mysql --ssl-mode=DISABLED -u root -S $MYSQL_SOCKET
	512	echo "GRANT RELOAD, SHUTDOWN ON . TO 'mysql_sysadmin'@'localhost'; FLUSH PRIVILEGES;" \| mysql --ssl-mode=DISABLED -u root -S $MYSQL_SOCKET
	513
	514	Set password for root user (ALL privileges, DB admin):
	515	echo "ALTER USER 'root'@'localhost' IDENTIFIED BY 'newpassword'; FLUSH PRIVILEGES;" \| mysql --ssl-mode=DISABLED -u root -S $MYSQL_SOCKET
	516
	517	NOTE: mysql_sysadmin password should be placed to $MYSQL_CONFIG in
	518	mysqladmin section. See the manual for more instructions.
	519	(This user is used at logs rotation and server shutdown)
	520
	521	END_OF_MSG
	522	else
	523	fail
	524	cat << END_OF_MSG
	525	ERROR:
	526	ERROR:
	527	ERROR: Initialization of server FAILED!
	528	ERROR:
	529	ERROR:
	530
	531	Examine the logs in /var/log/percona-server for more information. You can
	532	also try to start the mysqld daemon with:
	533
	534	/usr/sbin/mysqld --skip-grant &
	535
	536	You can use the command line tool mysql to connect to the mysql
	537	database and look at the grant tables:
	538
	539	shell> mysql -u root mysql
	540	mysql> show tables
	541
	542	Try 'mysqld --help' if you have problems with paths. Setting on
	543	logging in $MYSQL_DATA_DIR/mysqld.conf gives you a log in /var/log/percona-server/query.log that
	544	may be helpful. The latest information about percona-server is available on the
	545	web at https://www.percona.com/software/mysql-database/percona-server.
	546
	547	Please check PLD Linux ftp site for newer versions of this package.
	548
	549	Please consult the percona-server manual section: 'Problems running
	550	mysql_install_db', and the manual section that describes problems on
	551	your OS. Another information source is the percona-server email archive.
	552
	553	END_OF_MSG
	554	exit 1
	555	fi
	556
	557	# if it's first server, register as default
	558	if [ ! -e /var/lib/mysql/mysql.sock ] \|\| [ -L /var/lib/mysql/mysql.sock ] && [ -z "$(readlink /var/lib/mysql/mysql.sock)" ]; then
	559	sock=${MYSQL_SOCKET#/var/lib/mysql/} # make it relative if possible
	560	ln -s "$sock" /var/lib/mysql/mysql.sock
	561	fi
	562	# same for config, move to /etc
	563	if [ ! -e /etc/percona-server/mysqld.conf ]; then
	564	mv "$MYSQL_CLUSTER_DIR/mysqld.conf" /etc/percona-server/mysqld.conf
	565	fi
	566	}
	567
	568	#
	569	# End of useful functions.
	570	#
	571
	572	start() {
	573	local mysqldir
	574	for mysqldir in $DB_CLUSTERS; do
	575	mysqlstatus "$mysqldir" start
	576	if [ "$MYSQL_STATUS" = "running" ]; then
	577	msg_already_running "percona-server $mysqldir"
	578	else
	579	mysqlstart "$mysqldir"
	580	fi
	581	done
	582	mysqlsubsys
	583	}
	584
	585	stop() {
	586	local mysqldir
	587	for mysqldir in $DB_CLUSTERS; do
	588	mysqlstatus "$mysqldir" stop
	589	if [ "$MYSQL_STATUS" = "not running" ]; then
	590	msg_not_running "percona-server $mysqldir"
	591	else
	592	mysqlstop "$mysqldir"
	593	fi
	594	done
	595	mysqlsubsys
	596	}
	597
	598	condrestart() {
	599	if [ ! -f /var/lock/subsys/percona-server ]; then
	600	msg_not_running "percona-server"
	601	RETVAL=$1
	602	return
	603	fi
	604
	605	stop
	606	start
	607	}
	608
	609	status() {
	610	local mysqldir addr port socket pid pids running datadir
	611	RETVAL=3
	612	for mysqldir in $DB_CLUSTERS; do
	613	mysqlstatus "$mysqldir"
	614	if [ "$MYSQL_STATUS" = "running" ]; then
	615	RETVAL=0
	616	addr=${MYSQL_BIND_ADDRESS:-0.0.0.0}
	617	port=${MYSQL_PORT:-3306}
	618	socket=${MYSQL_SOCKET:-/var/lib/mysql/mysql.sock}
	619	pid=$MYSQL_PID
	620	nls "percona-server cluster %s, pid %s\n" "$mysqldir" "$pid"
	621	[ -z "$MYSQL_SKIP_NETWORKING" ] && nls "\ttcp:%s:%s\n" "$addr" "$port"
	622	nls "\tunix: %s\n" "$socket"
	623
	624	MYSQL_SOCKET=$socket slave_status
	625
	626	pids="$pids/$MYSQL_PID/"
	627	progress "$MYSQL_STATUS"
	628	else
	629	show "percona-server cluster %s" "$mysqldir"
	630	progress "$MYSQL_STATUS" "$CFAIL"
	631	fi
	632	echo
	633	done
	634
	635	for pid in $(/sbin/pidof mysqld); do
	636	if [[ $pids != /$pid/ ]]; then
	637	running="$running $pid"
	638	fi
	639	done
	640
	641	if [ $# = 1 -a "$running" ]; then
	642	nls "Warning: percona-server Daemon processes not under clusters.conf control:"
	643	# see if we can display their status
	644	for pid in $running; do
	645	datadir=$(cat /proc/$pid/cmdline \| tr '\0' '\n' \| fgrep -- --datadir=)
	646	datadir=${datadir#--datadir=} # strip --datadir
	647	mysqldir=${datadir%/mysqldb/db} # strip /mysqldb/db
	648	mysqlstatus "$mysqldir"
	649	if [ "$MYSQL_STATUS" = "running" ]; then
	650	addr=${MYSQL_BIND_ADDRESS:-0.0.0.0}
	651	port=${MYSQL_PORT:-3306}
	652	socket=${MYSQL_SOCKET:-/var/lib/mysql/mysql.sock}
	653	nls "percona-server cluster %s, pid %s\n" "$mysqldir" "$pid"
	654	[ -z "$MYSQL_SKIP_NETWORKING" ] && nls "\ttcp:%s:%s\n" "$addr" "$port"
	655	nls "\tunix: %s\n" "$socket"
	656
	657	MYSQL_SOCKET=$socket slave_status
	658
	659	progress "$MYSQL_STATUS"
	660	else
	661	show "percona-server cluster %s" "$mysqldir"
	662	progress "$MYSQL_STATUS" "$CFAIL"
	663	fi
	664	echo
	665	done
	666	fi
	667	}
	668
	669	RETVAL=0
	670	case "$action" in
	671	start)
	672	start
	673	;;
	674	stop)
	675	stop
	676	;;
	677	restart)
	678	stop
	679	start
	680	;;
	681	try-restart)
	682	condrestart 0
	683	;;
	684	force-reload)
	685	condrestart 7
	686	;;
	687	init)
	688	for mysqldir in $DB_CLUSTERS; do
	689	mysqlinit "$mysqldir"
	690	done
	691	exit $?
	692	;;
	693	flush-logs)
	694	for mysqldir in $DB_CLUSTERS; do
	695	mysqlgetconfig "$mysqldir"
	696	# just if mysqld is really running
	697	if /usr/bin/mysqladmin --defaults-file="$MYSQL_CONFIG" --socket="$MYSQL_SOCKET" ping >/dev/null 2>&1; then
	698	/usr/bin/mysqladmin --defaults-file="$MYSQL_CONFIG" --socket="$MYSQL_SOCKET" flush-logs
	699	fi
	700	done
	701	;;
	702	status)
	703	status
	704	;;
	705	*)
	706	msg_usage "$0 {start\|stop\|restart\|try-restart\|force-reload\|init\|flush-logs\|status}"
	707	exit 3
	708	esac
	709
	710	exit $RETVAL