3 # mysql A very fast and reliable SQL database engine
5 # chkconfig: 2345 84 25
7 # description: A very fast and reliable SQL database engine.
9 # Source function library
10 . /etc/rc.d/init.d/functions
13 . /etc/sysconfig/network
16 if [ -f /etc/sysconfig/mysql ]; then
17 . /etc/sysconfig/mysql
19 nls "Error: %s not found" /etc/sysconfig/mysql
20 nls "%s can't be run." MySQL
24 if [ -n "$MYSQL_DB_CLUSTERS" ]; then
25 nls "Warning: MYSQL_DB_CLUSTERS is set. It's obsolete. Use %s instead." /etc/mysql/clusters.conf
28 if [ -f /etc/mysql/clusters.conf ]; then
29 MYSQL_DB_CLUSTERS=$(awk -F= '!/^#/ && /=/{print $2}' /etc/mysql/clusters.conf)
30 if [ -z "$MYSQL_DB_CLUSTERS" ]; then
31 nls "Warning: there are no configured clusters."
35 nls "Warning: Missing clusters config file %s" /etc/mysql/clusters.conf
36 if [ -z "$MYSQL_DB_CLUSTERS" ]; then
37 nls "Warning: there are no configured clusters."
38 nls "Using default cluster /var/lib/mysql (compatibility mode)"
39 MYSQL_DB_CLUSTERS=/var/lib/mysql
44 # Check that networking is up
45 if is_yes "${NETWORKING}"; then
46 if [ ! -f /var/lock/subsys/network -a "$1" != stop -a "$1" != status -a "$1" != init ]; then
47 msg_network_down MySQL
54 sharedir=/usr/share/percona-server
58 # any db cluster as command line argument?
61 # perform action for specified clusters only
63 # try auto resolving from /etc/mysql/clusters.conf
64 if [[ "$a" != /* ]]; then
65 m=$(awk -va="$a" -F= 'substr($0, 1, length(a)) == a {print $1}' /etc/mysql/clusters.conf)
67 echo >&2 "Cluster name '$a' did not match anything!"
70 if [ $(echo "$m" | wc -l) -gt 1 ]; then
71 echo >&2 "Cluster name '$a' ambiguous:" $m
74 a=$(awk -va="$a" -F= 'substr($0, 1, length(a)) == a {print $2}' /etc/mysql/clusters.conf)
76 DB_CLUSTERS="$DB_CLUSTERS $a"
79 DB_CLUSTERS="$MYSQL_DB_CLUSTERS"
82 # global error log, if mysqld.conf hasn't migrated to log-error style
83 MYSQL_ERRLOG=/var/log/mysql/mysqld.log
84 MYSQL_STOP_WAIT_TIME=${MYSQL_STOP_WAIT_TIME:-900}
91 # check for mysql status
98 # MYSQL_STATUS = starting | running | not running | died
99 # MYSQL_PID = pid of mysqld process
105 mysqlgetconfig "$clusterdir" status
107 MYSQL_STATUS="not running"
112 if [ -f "$MYSQL_PIDFILE" ]; then
113 MYSQL_PIDFILE_PID=$(cat "$MYSQL_PIDFILE")
116 if [ -n "$MYSQL_PIDFILE_PID" ]; then
117 MYSQL_PID=$MYSQL_PIDFILE_PID
118 if [ ! -d "/proc/$MYSQL_PID" ]; then
121 elif (grep -qa "$MYSQL_PIDFILE" /proc/$MYSQL_PID/cmdline 2> /dev/null); then
122 MYSQL_STATUS="running"
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")
135 if [ -n "$MYSQL_PIDFILE_PID" ]; then
136 MYSQL_PID=$MYSQL_PIDFILE_PID
137 MYSQL_STATUS="running"
140 MYSQL_STATUS="starting"
147 # else default, "not running"
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
156 # $2 - status | other
159 local clusterdir="$1" config_file
162 # emulate old behaviour if only one cluster specified
163 if [ "$clusterdir" = "$MYSQL_DB_CLUSTERS" -a "$clusterdir" = "/var/lib/mysql" -a -f /etc/mysqld.conf ]; then
165 config_file=/etc/mysqld.conf
167 local config=$(awk -F= -vclusterdir="$clusterdir" '!/^#/{ if (clusterdir == $2) print $1}' /etc/mysql/clusters.conf)
168 if [[ $config = /* ]]; then
169 config_file="$config"
170 elif [ -f "/etc/mysql/$config" ]; then
171 config_file="/etc/mysql/$config"
173 config_file="$clusterdir/mysqld.conf"
177 MYSQL_CLUSTER_DIR="$clusterdir"
179 if [ -z "$config_file" ]; then
180 nls "Error: Can't find config file for %s cluster" "$clusterdir"
181 if [ "$mode" = "status" ]; then
187 MYSQL_CONFIG="$config_file"
190 if [ ! -f "$config_file" ]; then
191 nls "Error: config file %s not found" "$config_file"
192 nls "MySQL can't be run. Did you initialize DB by doing \`$0 init'?"
193 if [ "$mode" = "status" ]; then
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=
209 gsub(/^[\t ]+|[\t ]+$/, "", $1);
210 gsub(/^[\t ]+|[\t ]+$/, "", $2);
213 # skip comments and empty lines
214 /^[;#]|^ *$/ { next }
216 /^[ \t]*\[.*\][ \t]*$/ {
218 section = substr($0, RSTART + 1, RSTART + RLENGTH - 3);
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;", $2);
243 # error log not defined in config file. add one
244 if [ -z "$MYSQL_LOG_ERROR" ]; then
245 MYSQL_LOG_ERROR=$MYSQL_ERRLOG
247 # unset, so mysqld would use value from config itself
248 unset MYSQL_LOG_ERROR
251 if is_yes "$MYSQL_RA_COMPAT"; then
252 MYSQL_DATA_DIR_SUB=""
254 MYSQL_DATA_DIR_SUB="/mysqldb"
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${MYSQL_DATA_DIR_SUB}/db"
259 nls " MySQL can't be run."
263 if [ -z "$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 " MySQL can't be run."
269 if [ -z "$MYSQL_USER" ]; then
270 echo "$(nls 'MySQL user not configured properly')"'!' >&2
271 nls "Edit %s and configure it." "$config_file" >&2
278 local clusterdir="$1"
279 mysqlgetconfig "$clusterdir"
280 if [ ! -d "$MYSQL_DATA_DIR/mysql" ]; then
281 nls "MySQL cluster %s not initialized." "$clusterdir"
282 nls "Try \`%s init %s' before start." "$0" "$clusterdir"
286 msg_starting "MySQL $clusterdir"; busy
287 [ -z "$DEFAULT_SERVICE_RUN_NICE_LEVEL" ] && DEFAULT_SERVICE_RUN_NICE_LEVEL=0
288 rm -f "$MYSQL_PIDFILE"
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"} \
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
305 show "Waiting for MySQL to start"
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
312 [ -d /proc/$pid ] || break
313 [ -f "$MYSQL_PIDFILE" ] && break
318 mysqlstatus "$clusterdir" start
319 if [ "$MYSQL_STATUS" = "running" -a "$MYSQL_PID" != "unknown" ]; then
321 elif [ "$MYSQL_STATUS" = "died" ]; then
332 local clusterdir="$1"
333 mysqlstatus "$clusterdir" stop
334 msg_stopping "MySQL $clusterdir"
337 # try graceful shutdown -- send shutdown command
338 # requires mysql_sysadmin user proper privs
339 /usr/bin/mysqladmin --defaults-file=$MYSQL_CONFIG ${MYSQL_SOCKET:+--socket=$MYSQL_SOCKET} shutdown >/dev/null 2>&1
340 mysqlstatus "$clusterdir" stop
342 if [ "$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/$MYSQL_PID" ] || break
350 mysqlstatus "$clusterdir" stop
351 if [ "$MYSQL_STATUS" = "died" ]; then
353 elif [ "$MYSQL_STATUS" = "running" -o "$MYSQL_STATUS" = "starting" ]; then
360 # report slave status
361 # uses MYSQL_SOCKET - path to mysql socket
363 if [ ! -x /usr/bin/mysql ]; then
364 echo >&2 "Slave status not available: 'mysql' program not installed."
368 # see if slave status can be reported
369 local err=0 slave_status=$(mysql --defaults-file="$MYSQL_CONFIG" --socket="$MYSQL_SOCKET" -e 'show slave status\G')
370 if [ -z "$slave_status" ]; then
375 printf "Slave Status:\n"
378 eval $(echo "$slave_status" | awk -F': ' '/^ *[A-Za-z_]+:/{
380 v = substr($0, length($1) + 3);
381 gsub(/\\/, "\\\\\\", v);
382 gsub(/"/, "\\\"", v);
384 gsub(/\$/, "\\$", v);
385 gsub(/\$/, "\\$", v);
386 printf("%s=\"%s\";\n", k, v);
390 if [ "$slave_io_running" != "Yes" ]; then
391 printf "\tSlave IO not running\n"
394 if [ "$slave_sql_running" != "Yes" ]; then
395 printf "\tSlave SQL not running\n"
399 if [ "$err" = 1 -a "$last_errno" -gt 0 ]; then
400 printf "\tERROR %s: %s\n" "$last_errno" "$last_error"
403 if [ "$master_log_file" != "$relay_master_log_file" ]; then
404 printf "\tERROR logfile mismatch (%s)\n" "$relay_master_log_file"
408 if [ -z "$read_master_log_pos" -o -z "$exec_master_log_pos" ]; then
409 printf "\tERROR No info about master\n"
414 diff=$(($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"
421 # check for running mysql instances; if any instance is running then
422 # create subsys lock file
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/mysql
433 rm -f /var/lock/subsys/mysql
437 local clusterdir="$1"
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 $clusterdir)."
445 if [ -f "$clusterdir/mysqld.conf" ]; then
446 mysqlgetconfig "$clusterdir"
449 MYSQL_CLUSTER_DIR="$clusterdir"
450 MYSQL_DATA_DIR="$clusterdir/mysqldb/db"
451 MYSQL_PIDFILE="$clusterdir/mysqldb/mysql.pid"
452 MYSQL_SOCKET="$clusterdir/mysqldb/mysql.sock"
454 # this $MYSQL_CONFIG will be created later
455 MYSQL_CONFIG="$MYSQL_CLUSTER_DIR/mysqld.conf"
458 show "Initializing cluster %s" "$clusterdir"; started
460 # Check if not exist init database
461 if [ -d "$MYSQL_DATA_DIR/mysql" ]; then
462 nls "Seems that database is initialized now. Remove by hand %s" "$MYSQL_DATA_DIR/mysql"
463 nls "before initializing database."
464 nls "For now skipping cluster %s." "$clusterdir"
468 show "Installing MySQL system tables for $MYSQL_DATA_DIR"
472 mkdir -p "$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"
478 if [ -f $sharedir/mysqld.conf -a ! -f "$MYSQL_CLUSTER_DIR/mysqld.conf" ]; then
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"
489 cat > $MYSQL_DATA_DIR/mysql-init.sql <<-EOF
490 CREATE DATABASE mysql;
492 $(cat $sharedir/mysql_system_tables.sql)
493 $(sed -e "/@current_hostname/d" $sharedir/mysql_system_tables_data.sql)
498 --defaults-file=$MYSQL_CLUSTER_DIR/mysqld.conf \
500 --skip-grant-tables \
501 --datadir=$MYSQL_DATA_DIR \
503 --slave-load-tmpdir=$MYSQL_DATA_DIR \
504 --tmpdir=$MYSQL_DATA_DIR \
505 --log-error=$MYSQL_ERRLOG \
506 < $MYSQL_DATA_DIR/mysql-init.sql && ok=1
507 [ -f $MYSQL_DATA_DIR/mysql/user.frm ] || ok=0
509 if [ "$ok" = 1 ]; then
510 rm -f $MYSQL_DATA_DIR/mysql-init.sql
514 PLEASE REMEMBER TO SET A PASSWORD FOR THE MySQL USERS!
515 This is done, after starting database, in the order shown,
518 For 'mysql_sysadmin' (RELOAD and SHUTDOWN privileges):
519 echo "update mysql.user set password=password('newpassword') where user='mysql_sysadmin'; FLUSH PRIVILEGES;" | mysql -u mysql -S $MYSQL_SOCKET
521 For 'mysql' user (ALL privileges, DB admin):
522 echo "update mysql.user set password=password('newpassword') where user='mysql'; FLUSH PRIVILEGES;" | mysql -u mysql -S $MYSQL_SOCKET
524 NOTE: mysql_sysadmin password should be placed to $MYSQL_CONFIG in
525 mysqladmin section. See the manual for more instructions.
526 (This user is used at logs rotation and server shutdown)
529 show "Filling help tables..."
531 ( echo "use mysql;"; cat $sharedir/fill_help_tables.sql ) | \
533 --defaults-file=$MYSQL_CLUSTER_DIR/mysqld.conf \
535 --skip-grant-tables \
536 --datadir=$MYSQL_DATA_DIR \
538 --slave-load-tmpdir=$MYSQL_DATA_DIR \
539 --tmpdir=$MYSQL_DATA_DIR \
540 --log-error=$MYSQL_ERRLOG \
542 if [ "$ok" = 1 ]; then
547 WARNING: HELP FILES ARE NOT COMPLETELY INSTALLED!
548 The "HELP" command might not work properly.
557 ERROR: Installation of grant tables FAILED!
561 The initialization SQL script was preserved at $MYSQL_DATA_DIR/mysql-init.sql
563 Examine the logs in /var/log/mysql for more information. You can
564 also try to start the mysqld daemon with:
566 /usr/sbin/mysqld --skip-grant &
568 You can use the command line tool mysql to connect to the mysql
569 database and look at the grant tables:
571 shell> mysql -u mysql mysql
574 Try 'mysqld --help' if you have problems with paths. Setting on
575 logging in $MYSQL_DATA_DIR/mysqld.conf gives you a log in /var/log/mysql/query.log that
576 may be helpful. The latest information about MySQL is available on the
577 web at http://www.mysql.com/.
579 Please check PLD Linux ftp site for newer versions of this package.
581 Please consult the MySQL manual section: 'Problems running
582 mysql_install_db', and the manual section that describes problems on
583 your OS. Another information source is the MySQL email archive.
589 # if it's first server, register as default
590 if [ ! -e /var/lib/mysql/mysql.sock ] || [ -L /var/lib/mysql/mysql.sock ] && [ -z "$(readlink /var/lib/mysql/mysql.sock)" ]; then
591 sock=${MYSQL_SOCKET#/var/lib/mysql/} # make it relative if possible
592 ln -s "$sock" /var/lib/mysql/mysql.sock
594 # same for config, move to /etc
595 if [ ! -e /etc/mysql/mysqld.conf ]; then
596 mv "$MYSQL_CLUSTER_DIR/mysqld.conf" /etc/mysql/mysqld.conf
601 # End of useful functions.
606 for mysqldir in $DB_CLUSTERS; do
607 mysqlstatus "$mysqldir" start
608 if [ "$MYSQL_STATUS" = "running" ]; then
609 msg_already_running "MySQL $mysqldir"
611 mysqlstart "$mysqldir"
619 for mysqldir in $DB_CLUSTERS; do
620 mysqlstatus "$mysqldir" stop
621 if [ "$MYSQL_STATUS" = "not running" ]; then
622 msg_not_running "MySQL $mysqldir"
624 mysqlstop "$mysqldir"
631 if [ ! -f /var/lock/subsys/mysql ]; then
632 msg_not_running "MySQL"
642 local mysqldir addr port socket pid pids running datadir
644 for mysqldir in $DB_CLUSTERS; do
645 mysqlstatus "$mysqldir"
646 if [ "$MYSQL_STATUS" = "running" ]; then
648 addr=${MYSQL_BIND_ADDRESS:-0.0.0.0}
649 port=${MYSQL_PORT:-3306}
650 socket=${MYSQL_SOCKET:-/var/lib/mysql/mysql.sock}
652 nls "MySQL cluster %s, pid %s\n" "$mysqldir" "$pid"
653 [ -z "$MYSQL_SKIP_NETWORKING" ] && nls "\ttcp:%s:%s\n" "$addr" "$port"
654 nls "\tunix: %s\n" "$socket"
656 MYSQL_SOCKET=$socket slave_status
658 pids="$pids/$MYSQL_PID/"
659 progress "$MYSQL_STATUS"
661 show "MySQL cluster %s" "$mysqldir"
662 progress "$MYSQL_STATUS" "$CFAIL"
667 for pid in $(/sbin/pidof mysqld); do
668 if [[ $pids != */$pid/* ]]; then
669 running="$running $pid"
673 if [ $# = 1 -a "$running" ]; then
674 nls "Warning: MySQL Daemon processes not under clusters.conf control:"
675 # see if we can display their status
676 for pid in $running; do
677 datadir=$(cat /proc/$pid/cmdline | tr '\0' '\n' | fgrep -- --datadir=)
678 datadir=${datadir#--datadir=} # strip --datadir
679 mysqldir=${datadir%/mysqldb/db} # strip /mysqldb/db
680 mysqlstatus "$mysqldir"
681 if [ "$MYSQL_STATUS" = "running" ]; then
682 addr=${MYSQL_BIND_ADDRESS:-0.0.0.0}
683 port=${MYSQL_PORT:-3306}
684 socket=${MYSQL_SOCKET:-/var/lib/mysql/mysql.sock}
685 nls "MySQL cluster %s, pid %s\n" "$mysqldir" "$pid"
686 [ -z "$MYSQL_SKIP_NETWORKING" ] && nls "\ttcp:%s:%s\n" "$addr" "$port"
687 nls "\tunix: %s\n" "$socket"
689 MYSQL_SOCKET=$socket slave_status
691 progress "$MYSQL_STATUS"
693 show "MySQL cluster %s" "$mysqldir"
694 progress "$MYSQL_STATUS" "$CFAIL"
720 for mysqldir in $DB_CLUSTERS; do
721 mysqlinit "$mysqldir"
726 for mysqldir in $DB_CLUSTERS; do
727 mysqlgetconfig "$mysqldir"
728 # just if mysqld is really running
729 if /usr/bin/mysqladmin --defaults-file="$MYSQL_CONFIG" --socket="$MYSQL_SOCKET" ping >/dev/null 2>&1; then
730 /usr/bin/mysqladmin --defaults-file="$MYSQL_CONFIG" --socket="$MYSQL_SOCKET" flush-logs
738 msg_usage "$0 {start|stop|restart|try-restart|force-reload|init|flush-logs|status}"