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 MYSQL_ERRLOG=/var/log/mysql/err
  83 MYSQL_START_WAIT_TIME=${MYSQL_START_WAIT_TIME:-15}
  84 MYSQL_STOP_WAIT_TIME=${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_DATA_DIR MYSQL_USER MYSQL_PIDFILE
 152 #
 153 # arguments
 154 # $1 - db cluster
 155
 156 mysqlgetconfig() {
 157         clusterdir="$1"
 158
 159         # emulate old behaviour if only one cluster specified
 160         if [ "$clusterdir" = "$MYSQL_DB_CLUSTERS" -a "$clusterdir" = "/var/lib/mysql" -a -f /etc/mysqld.conf ]; then
 161                 MYSQL_RA_COMPAT=yes
 162                 config_file=/etc/mysqld.conf
 163         else
 164                 config=$(awk -F= -vclusterdir="$clusterdir" '!/^#/{ if (clusterdir == $2) print $1}' /etc/mysql/clusters.conf)
 165                 if [[ $config = /* ]]; then
 166                         config_file="$config"
 167                 elif [ -f "/etc/mysql/$config" ]; then
 168                         config_file="/etc/mysql/$config"
 169                 else
 170                         config_file="$clusterdir/mysqld.conf"
 171                 fi
 172         fi
 173
 174         MYSQL_CLUSTER_DIR="$clusterdir"
 175
 176         if [ -z "$config_file" ]; then
 177                 nls "Error: Can't find config file for %s cluster" "$clusterdir"
 178                 exit 6
 179         else
 180                 MYSQL_CONFIG="$config_file"
 181         fi
 182
 183         if [ ! -f "$config_file" ]; then
 184                 nls "Error: config file %s not found" "$config_file"
 185                 nls "MySQL can't be run. Did you initialize DB by doing \`$0 init'?"
 186                 exit 6
 187         fi
 188
 189         eval `awk '
 190 /^[ \t]*\[.*\][ \t]*$/ {
 191         match($0,/\[.*\]/)
 192         section=substr($0, RSTART + 1, RSTART + RLENGTH - 3)
 193 }
 194 section == "mysqld" && $2 ~ "=" {
 195         if ($1 == "datadir") {
 196                 printf("MYSQL_DATA_DIR=%s;", $3)
 197         } else if ($1 == "user") {
 198                 printf("MYSQL_USER=%s;", $3)
 199         } else if ($1 == "pid-file") {
 200                 printf("MYSQL_PIDFILE=%s;", $3)
 201         } else if ($1 == "socket") {
 202                 printf("MYSQL_SOCKET=%s;", $3)
 203         }
 204 }
 205 ' $config_file`
 206
 207
 208         if is_yes "$MYSQL_RA_COMPAT"; then
 209                 MYSQL_DATA_DIR_SUB=""
 210         else
 211                 MYSQL_DATA_DIR_SUB="/mysqldb"
 212         fi
 213
 214         if [ -z "$MYSQL_DATA_DIR" -o "$MYSQL_DATA_DIR" != "${clusterdir}${MYSQL_DATA_DIR_SUB}/db" ]; then
 215                 nls "Error: datadir specified in %s should be %s" "$config_file" "$clusterdir${MYSQL_DATA_DIR_SUB}/db"
 216                 nls " MySQL can't be run."
 217                 exit 6
 218         fi
 219
 220         if [ -z "$MYSQL_PIDFILE" -o "$MYSQL_PIDFILE" != "$clusterdir${MYSQL_DATA_DIR_SUB}/mysql.pid" ]; then
 221                 nls "Error: pid-file specified in %s should be %s" "$config_file" "$clusterdir${MYSQL_DATA_DIR_SUB}/mysql.pid"
 222                 nls " MySQL can't be run."
 223                 exit 6
 224         fi
 225
 226         if [ -z $MYSQL_USER ]; then
 227                 echo "$(nls 'MySQL user not configured properly')"'!' >&2
 228                 nls "Edit %s and configure it." "$config_file" >&2
 229                 exit 6
 230         fi
 231 }
 232
 233 # start mysql
 234 mysqlstart() {
 235         clusterdir="$1"
 236         mysqlgetconfig "$clusterdir"
 237         if [ ! -d "$MYSQL_DATA_DIR/mysql" ]; then
 238                 nls "MySQL cluster %s not initialized." "$clusterdir"
 239                 nls "Try \`%s init %s' before start." "$0" "$clusterdir"
 240                 exit 6
 241         fi
 242
 243         msg_starting "MySQL $clusterdir"
 244         busy
 245         [ -z "$DEFAULT_SERVICE_RUN_NICE_LEVEL" ] && DEFAULT_SERVICE_RUN_NICE_LEVEL=0
 246         rm -f "$MYSQL_PIDFILE"
 247
 248         TMPDIR=/tmp nice -n ${SERVICE_RUN_NICE_LEVEL:-$DEFAULT_SERVICE_RUN_NICE_LEVEL} \
 249                 /usr/bin/setsid /usr/sbin/mysqld \
 250                         --defaults-file=$MYSQL_CONFIG \
 251                         --datadir=$MYSQL_DATA_DIR \
 252                         --pid-file=$MYSQL_PIDFILE $MYSQL_OPTIONS \
 253                 >> $MYSQL_ERRLOG 2>&1 &
 254         pid=$!
 255
 256         sleep 0.1
 257         mysqlstatus "$clusterdir" start
 258         # it takes longer for mysqld to start and create pidfile if it has to recover innodb transactions
 259         if [ "$MYSQL_STATUS" = "starting" ]; then
 260                 echo ""
 261                 show "Waiting for MySQL to start"
 262                 busy
 263
 264                 # while the pid is running, mysql is starting up
 265                 # if the pidfile was created, it started up successfully
 266                 # if either case fails we break and report status
 267                 while true; do
 268                         [ -d /proc/$pid ] || break
 269                         [ -f "$MYSQL_PIDFILE" ] && break
 270                         sleep 0.2
 271                 done
 272         fi
 273
 274         mysqlstatus "$clusterdir" start
 275         if [ "$MYSQL_STATUS" = "running" -a "$MYSQL_PID" != "unknown" ]; then
 276                 ok
 277         elif [ "$MYSQL_STATUS" = "died" ]; then
 278                 RETVAL=1
 279                 died
 280         else
 281                 RETVAL=1
 282                 fail
 283         fi
 284 }
 285
 286 # stop mysql
 287 mysqlstop() {
 288         clusterdir="$1"
 289         mysqlstatus "$clusterdir" stop
 290         msg_stopping "MySQL $clusterdir"
 291         busy
 292
 293         # try graceful shutdown -- send shutdown command
 294         # requires mysql_logrotate user proper privs
 295         /usr/bin/mysqladmin --defaults-file=$MYSQL_CONFIG ${MYSQL_SOCKET:+--socket=$MYSQL_SOCKET} shutdown >/dev/null 2>&1
 296         mysqlstatus "$clusterdir" stop
 297
 298         if [ "$MYSQL_PID" != "unknown" ]; then
 299                 kill -TERM "$MYSQL_PID" 2> /dev/null
 300                 for nr in $(seq 1 $(($MYSQL_STOP_WAIT_TIME*10))); do
 301                         [ -d "/proc/$MYSQL_PID" ] || break
 302                         sleep 0.1
 303                 done
 304         fi
 305
 306         mysqlstatus "$clusterdir" stop
 307         if [ "$MYSQL_STATUS" = "died" ]; then
 308                 died
 309         elif [ "$MYSQL_STATUS" = "running" -o "$MYSQL_STATUS" = "starting" ]; then
 310                 fail
 311         else
 312                 ok
 313         fi
 314 }
 315
 316 #
 317 # check for running mysql instances; if any instance is running then
 318 # create subsys lock file
 319 #
 320 mysqlsubsys() {
 321         # check for every defined db cluster in sysconfig file
 322         for mysqldir in $DB_CLUSTERS; do
 323                 mysqlstatus "$mysqldir"
 324                 if [ "$MYSQL_STATUS" = "running" ]; then
 325                         touch /var/lock/subsys/mysql
 326                         return
 327                 fi
 328         done
 329         rm -f /var/lock/subsys/mysql
 330 }
 331
 332 mysqlinit() {
 333         clusterdir="$1"
 334
 335         if [ -f /etc/mysqld.conf ]; then
 336                 nls "Running in \`no cluster compat' mode: can't initialize database."
 337                 nls "Move /etc/mysqld.conf away and rerun \`$0 init' (new config will be in $clusterdir)."
 338                 exit 1
 339         fi
 340
 341         if [ -f "$clusterdir/mysqld.conf" ]; then
 342                 mysqlgetconfig "$clusterdir"
 343         else
 344                 MYSQL_USER="mysql"
 345                 MYSQL_CLUSTER_DIR="$clusterdir"
 346                 MYSQL_DATA_DIR="$clusterdir/mysqldb/db"
 347                 MYSQL_PIDFILE="$clusterdir/mysqldb/mysql.pid"
 348                 MYSQL_SOCKET="$clusterdir/mysqldb/mysql.sock"
 349
 350                 # this $MYSQL_CONFIG will be created later
 351                 MYSQL_CONFIG="$MYSQL_CLUSTER_DIR/mysqld.conf"
 352         fi
 353
 354         show "Initializing cluster %s" "$clusterdir"; echo
 355
 356         # Check if not exist init database
 357         if [ -d "$MYSQL_DATA_DIR/mysql" ]; then
 358                 nls "Seems that database is initialized now. Remove by hand %s" "$MYSQL_DATA_DIR/mysql"
 359                 nls "before initializing database."
 360                 nls "For now skipping cluster %s." "$clusterdir"
 361                 return
 362         fi
 363
 364         show "Creating privilege mysql tables for $MYSQL_DATA_DIR"
 365         busy
 366         TMP=/tmp TMPDIR=/tmp
 367
 368         # Install this in the user table, too
 369         hostname="`hostname --fqdn 2> /dev/null | tr -d '[:space:]'`"
 370         [ -z "$hostname" ] && hostname="localhost-unknown"
 371
 372         # Check if hostname is valid
 373         if [ -z "$hostname" ]; then
 374                 deltext
 375                 fail
 376                 nls "Sorry, the host name is not configured."
 377                 nls "Please configure the 'hostname' command to return a hostname."
 378                 exit 1
 379         elif ! hostname -i >/dev/null 2>&1; then
 380                 deltext
 381                 fail
 382                 nls "Sorry, the host '%s' could not be looked up." "$hostname"
 383                 nls "Please configure the 'hostname' command to return a correct hostname."
 384                 exit 1
 385         fi
 386
 387         mkdir -p "$MYSQL_DATA_DIR" > /dev/null 2>&1
 388         # Using mysql:mysql for MYSQL_CLUSTER_DIR is creating SECURITY hole, root:root is proper
 389         chown root:root "$MYSQL_CLUSTER_DIR"
 390     chown mysql:mysql "$MYSQL_CLUSTER_DIR/mysqldb" "$MYSQL_DATA_DIR" > /dev/null 2>&1
 391         chmod 751 "$MYSQL_CLUSTER_DIR" "$MYSQL_CLUSTER_DIR/mysqldb"
 392
 393         if [ -f /usr/share/mysql/mysqld.conf -a ! -f "$MYSQL_CLUSTER_DIR/mysqld.conf" ]; then
 394             sed -e "
 395                 s#\(datadir.*\)=.*#\1= $MYSQL_DATA_DIR#g;
 396                 s#\(pid-file.*\)=.*#\1= $MYSQL_PIDFILE#g;
 397                 s#\(socket.*\)=.*#\1= $MYSQL_SOCKET#g;
 398                 s#@clusterdir@#$MYSQL_CLUSTER_DIR#g;
 399                 " /usr/share/mysql/mysqld.conf > "$MYSQL_CLUSTER_DIR/mysqld.conf"
 400             chown root:root "$MYSQL_CLUSTER_DIR/mysqld.conf"
 401             chmod 640 "$MYSQL_CLUSTER_DIR/mysqld.conf"
 402         fi
 403
 404         if [ ! -e /var/lib/mysql/mysql.sock ] || [ -L /var/lib/mysql/mysql.sock ] && [ -z "$(readlink /var/lib/mysql/mysql.sock)" ]; then
 405                 sock=${MYSQL_SOCKET#/var/lib/mysql/} # make it relative if possible
 406             ln -s "$sock" /var/lib/mysql/mysql.sock
 407         fi
 408
 409         cat > $MYSQL_DATA_DIR/mysql-init.sql <<-EOF
 410                 CREATE DATABASE mysql;
 411                 use mysql;
 412                 $(cat /usr/share/mysql/mysql_system_tables.sql)
 413                 $(sed -e "s,@@hostname,'$hostname',g;s,'root','mysql',g" /usr/share/mysql/mysql_system_tables_data.sql)
 414 EOF
 415
 416         ok=0
 417         /usr/sbin/mysqld --bootstrap --skip-grant-tables \
 418                 --datadir=$MYSQL_DATA_DIR --user=$MYSQL_USER \
 419                 --slave-load-tmpdir=$MYSQL_DATA_DIR --tmpdir=$MYSQL_DATA_DIR < \
 420                 $MYSQL_DATA_DIR/mysql-init.sql 2>> /var/log/mysql/err && ok=1
 421         [ -f $MYSQL_DATA_DIR/mysql/host.frm ] || ok=0
 422
 423         if [ "$ok" = 1 ]; then
 424                 rm -f $MYSQL_DATA_DIR/mysql-init.sql
 425             ok
 426         cat << END_OF_MSG
 427
 428 PLEASE REMEMBER TO SET A PASSWORD FOR THE MySQL USERS!
 429 This is done (after starting database; press enter when asked for password) with:
 430
 431 mysqladmin -u mysql -S $MYSQL_SOCKET password 'password'
 432 mysqladmin -h $hostname -u mysql -S $MYSQL_SOCKET password 'password'
 433 mysqladmin -u mysql_logrotate -S $MYSQL_SOCKET password 'password'
 434
 435 NOTE: mysql_logrotate password should be placed to $MYSQL_CONFIG in
 436 mysqladmin section. See the manual for more instructions.
 437
 438 If you want to use new help tables in MySQL 4.1.x then you'll need to import the help data:
 439 mysql -u mysql -p -S $MYSQL_SOCKET mysql < /usr/share/mysql/fill_help_tables.sql
 440
 441 END_OF_MSG
 442       else
 443             fail
 444             cat << END_OF_MSG
 445 Installation of grant tables FAILED!
 446
 447 The initialization SQL script was preserved at $MYSQL_DATA_DIR/mysql-init.sql
 448
 449 Examine the logs in /var/log/mysql for more information.  You can
 450 also try to start the mysqld daemon with:
 451
 452 /usr/sbin/mysqld --skip-grant &
 453
 454 You can use the command line tool mysql to connect to the mysql
 455 database and look at the grant tables:
 456
 457 shell> mysql -u mysql mysql
 458 mysql> show tables
 459
 460 Try 'mysqld --help' if you have problems with paths. Setting on
 461 logging in /etc/mysqld.conf gives you a log in /var/log/mysql/log that
 462 may be helpful. The latest information about MySQL is available on the
 463 web at http://www.mysql.com/.
 464
 465 Please check PLD Linux ftp site for newer versions of this package.
 466
 467 Please consult the MySQL manual section: 'Problems running
 468 mysql_install_db', and the manual section that describes problems on
 469 your OS.  Another information source is the MySQL email archive.
 470 Please check all of the above before mailing us!  And if you do mail
 471 us, you MUST use the mysqlbug script!
 472
 473 END_OF_MSG
 474
 475         exit 1
 476         fi
 477 }
 478
 479 #
 480 # End of useful functions.
 481 #
 482
 483 start() {
 484         if [ ! -f $MYSQL_ERRLOG ]; then
 485                 touch $MYSQL_ERRLOG
 486         fi
 487         chown mysql:mysql $MYSQL_ERRLOG
 488         chmod 640 $MYSQL_ERRLOG
 489
 490         for mysqldir in $DB_CLUSTERS; do
 491                 mysqlstatus "$mysqldir" start
 492                 if [ "$MYSQL_STATUS" = "running" ]; then
 493                         msg_already_running "MySQL $mysqldir"
 494                 else
 495                         mysqlstart "$mysqldir"
 496                 fi
 497         done
 498         mysqlsubsys
 499 }
 500
 501 stop() {
 502         for mysqldir in $DB_CLUSTERS; do
 503                 mysqlstatus "$mysqldir" stop
 504                 if [ "$MYSQL_STATUS" = "not running" ]; then
 505                         msg_not_running "MySQL $mysqldir"
 506                 else
 507                         mysqlstop "$mysqldir"
 508                 fi
 509         done
 510         mysqlsubsys
 511 }
 512
 513 RETVAL=0
 514 case "$action" in
 515   start)
 516         start
 517         ;;
 518   stop)
 519         stop
 520         ;;
 521   status)
 522         for mysqldir in $DB_CLUSTERS; do
 523                 mysqlstatus "$mysqldir"
 524                 if [ "$MYSQL_STATUS" = "running" ]; then
 525                         show "MySQL cluster %s, PID %s" "$mysqldir" "$MYSQL_PID"
 526                         progress "$MYSQL_STATUS"
 527                 else
 528                         show "MySQL cluster %s" "$mysqldir"
 529                         progress "$MYSQL_STATUS" "$CFAIL"
 530                 fi
 531                 echo
 532         done
 533         exit $?
 534         ;;
 535   restart|force-reload)
 536         stop
 537         start
 538         ;;
 539   init)
 540         for mysqldir in $DB_CLUSTERS; do
 541                 mysqlinit "$mysqldir"
 542         done
 543         exit $?
 544         ;;
 545   flush-logs)
 546         for mysqldir in $DB_CLUSTERS; do
 547             mysqlgetconfig "$mysqldir"
 548                 # just if mysqld is really running
 549                 if /usr/bin/mysqladmin --defaults-file="$MYSQL_CONFIG" --socket="$MYSQL_SOCKET" ping >/dev/null 2>&1; then
 550                         /usr/bin/mysqladmin --defaults-file="$MYSQL_CONFIG" --socket="$MYSQL_SOCKET" flush-logs
 551                 fi
 552         done
 553         ;;
 554   *)
 555         msg_usage "$0 {start|stop|init|restart|force-reload|status}"
 556         exit 3
 557 esac
 558
 559 exit $RETVAL
 560
 561 # vi: shiftwidth=4 tabstop=4