mysql.init

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