config/ctdb.init

   1 #!/bin/sh
   2 #
   3 ##############################
   4 # ctdb:                        Starts the clustered tdb daemon
   5 #
   6 # chkconfig:           - 90 01
   7 #
   8 # description:                 Starts and stops the clustered tdb daemon
   9 # pidfile:             /var/run/ctdbd/ctdbd.pid
  10 #
  11
  12 ### BEGIN INIT INFO
  13 # Provides:            ctdb
  14 # Required-Start:      $network
  15 # Required-Stop:       $network
  16 # Default-Stop:
  17 # Default-Start:       3 5
  18 # Short-Description:   start and stop ctdb service
  19 # Description:         initscript for the ctdb service
  20 ### END INIT INFO
  21
  22 # Source function library.
  23 if [ -f /etc/init.d/functions ] ; then
  24     . /etc/init.d/functions
  25 elif [ -f /etc/rc.d/init.d/functions ] ; then
  26     . /etc/rc.d/init.d/functions
  27 fi
  28
  29 [ -f /etc/rc.status ] && {
  30     . /etc/rc.status
  31     rc_reset
  32     LC_ALL=en_US.UTF-8
  33 }
  34
  35 # Avoid using root's TMPDIR
  36 unset TMPDIR
  37
  38 [ -z "$CTDB_BASE" ] && {
  39     export CTDB_BASE="/etc/ctdb"
  40 }
  41
  42 [ -z "$CTDB_VARDIR" ] && {
  43     export CTDB_VARDIR="/var/ctdb"
  44 }
  45
  46 . $CTDB_BASE/functions
  47 loadconfig network
  48 loadconfig ctdb
  49
  50 # check networking is up (for redhat)
  51 [ "$NETWORKING" = "no" ] && exit 0
  52
  53 detect_init_style
  54 export CTDB_INIT_STYLE
  55
  56 ctdbd=${CTDBD:-/usr/sbin/ctdbd}
  57
  58 if [ "$CTDB_VALGRIND" = "yes" ]; then
  59     init_style="valgrind"
  60 else
  61     init_style="$CTDB_INIT_STYLE"
  62 fi
  63
  64 build_ctdb_options () {
  65
  66     maybe_set () {
  67         # If the 2nd arg is null then return - don't set anything.
  68         # Else if the 3rd arg is set and it doesn't match the 2nd arg
  69         # then return
  70         [ -z "$2" -o \( -n "$3" -a "$3" != "$2" \) ] && return
  71
  72         val="'$2'"
  73         case "$1" in
  74             --*) sep="=" ;;
  75             -*)  sep=" " ;;
  76         esac
  77         # For these options we're only passing a value-less flag.
  78         [ -n "$3" ] && {
  79             val=""
  80             sep=""
  81         }
  82
  83         CTDB_OPTIONS="${CTDB_OPTIONS}${CTDB_OPTIONS:+ }${1}${sep}${val}"
  84     }
  85
  86     [ -z "$CTDB_RECOVERY_LOCK" ] && {
  87         echo "No recovery lock specified. Starting CTDB without split brain prevention"
  88     }
  89     maybe_set "--reclock"                "$CTDB_RECOVERY_LOCK"
  90
  91     # build up CTDB_OPTIONS variable from optional parameters
  92     maybe_set "--logfile"                "$CTDB_LOGFILE"
  93     maybe_set "--nlist"                  "$CTDB_NODES"
  94     maybe_set "--socket"                 "$CTDB_SOCKET"
  95     maybe_set "--public-addresses"       "$CTDB_PUBLIC_ADDRESSES"
  96     maybe_set "--public-interface"       "$CTDB_PUBLIC_INTERFACE"
  97     maybe_set "--dbdir"                  "$CTDB_DBDIR"
  98     maybe_set "--dbdir-persistent"       "$CTDB_DBDIR_PERSISTENT"
  99     maybe_set "--event-script-dir"       "$CTDB_EVENT_SCRIPT_DIR"
 100     maybe_set "--transport"              "$CTDB_TRANSPORT"
 101     maybe_set "-d"                       "$CTDB_DEBUGLEVEL"
 102     maybe_set "--notification-script"    "$CTDB_NOTIFY_SCRIPT"
 103     maybe_set "--start-as-disabled"      "$CTDB_START_AS_DISABLED"    "yes"
 104     maybe_set "--start-as-stopped "      "$CTDB_START_AS_STOPPED"     "yes"
 105     maybe_set "--no-recmaster"           "$CTDB_CAPABILITY_RECMASTER" "no"
 106     maybe_set "--no-lmaster"             "$CTDB_CAPABILITY_LMASTER"   "no"
 107     maybe_set "--lvs --single-public-ip" "$CTDB_LVS_PUBLIC_IP"
 108     maybe_set "--script-log-level"       "$CTDB_SCRIPT_LOG_LEVEL"
 109     maybe_set "--log-ringbuf-size"       "$CTDB_LOG_RINGBUF_SIZE"
 110     maybe_set "--syslog"                 "$CTDB_SYSLOG"               "yes"
 111     maybe_set "--max-persistent-check-errors" "$CTDB_MAX_PERSISTENT_CHECK_ERRORS"
 112 }
 113
 114 check_tdb () {
 115         local PDBASE=$1
 116
 117         local TDBTOOL_HAS_CHECK=`echo "help" | /usr/bin/tdbtool | grep check | wc -l`
 118
 119         test x"$TDBTOOL_HAS_CHECK" = x"1" && {
 120                 #
 121                 # Note tdbtool always exits with 0
 122                 #
 123                 local OK=`/usr/bin/tdbtool $PDBASE check | grep "Database integrity is OK" | wc -l`
 124                 test x"$OK" = x"1" || {
 125                         return 1;
 126                 }
 127
 128                 return 0;
 129         }
 130
 131         /usr/bin/tdbdump $PDBASE >/dev/null 2>/dev/null || {
 132                 return $?;
 133         }
 134
 135         return 0;
 136 }
 137
 138 check_persistent_databases () {
 139     PERSISTENT_DB_DIR="${CTDB_DBDIR:-/var/ctdb}/persistent"
 140     mkdir -p $PERSISTENT_DB_DIR 2>/dev/null
 141     local ERRCOUNT=$CTDB_MAX_PERSISTENT_CHECK_ERRORS
 142
 143     test -z "$ERRCOUNT" && {
 144         ERRCOUNT="0"
 145     }
 146     test x"$ERRCOUNT" != x"0" && {
 147         return 0;
 148     }
 149     for PDBASE in `ls $PERSISTENT_DB_DIR/*.tdb.[0-9] 2>/dev/null`; do
 150         check_tdb $PDBASE || {
 151             echo "Persistent database $PDBASE is corrupted! CTDB will not start."
 152             return 1
 153         }
 154     done
 155 }
 156
 157 set_ctdb_variables () {
 158     # set any tunables from the config file
 159     set | grep ^CTDB_SET_ | cut -d_ -f3- |
 160     while read v; do
 161         varname=`echo $v | cut -d= -f1`
 162         value=`echo $v | cut -d= -f2`
 163         ctdb setvar $varname $value || RETVAL=1
 164     done || exit 1
 165 }
 166
 167 set_retval() {
 168     return $1
 169 }
 170
 171 wait_until_ready () {
 172     _timeout="${1:-10}" # default is 10 seconds
 173
 174     _count=0
 175     while ! ctdb ping >/dev/null 2>&1 ; do
 176         if [ $_count -ge $_timeout ] ; then
 177             return 1
 178         fi
 179         sleep 1
 180         _count=$(($_count + 1))
 181     done
 182 }
 183
 184 ctdbd=${CTDBD:-/usr/sbin/ctdbd}
 185
 186 start() {
 187     echo -n $"Starting ctdbd service: "
 188
 189     ctdb ping >/dev/null 2>&1 && {
 190         echo $"CTDB is already running"
 191         return 0
 192     }
 193
 194     build_ctdb_options
 195
 196     check_persistent_databases || return $?
 197
 198     if [ "$CTDB_SUPPRESS_COREFILE" = "yes" ]; then
 199         ulimit -c 0
 200     else
 201         ulimit -c unlimited
 202     fi
 203
 204     case $init_style in
 205         valgrind)
 206             eval valgrind -q --log-file=/var/log/ctdb_valgrind \
 207                 $ctdbd --valgrinding "$CTDB_OPTIONS"
 208             RETVAL=$?
 209             echo
 210             ;;
 211         suse)
 212             eval startproc $ctdbd "$CTDB_OPTIONS"
 213             RETVAL=$?
 214             ;;
 215         redhat)
 216             eval $ctdbd "$CTDB_OPTIONS"
 217             RETVAL=$?
 218             [ $RETVAL -eq 0 ] && touch /var/lock/subsys/ctdb || RETVAL=1
 219             ;;
 220         debian)
 221             eval start-stop-daemon --start --quiet --background \
 222                 --exec $ctdbd -- "$CTDB_OPTIONS"
 223             RETVAL=$?
 224             ;;
 225     esac
 226
 227     if [ $RETVAL -eq 0 ] ; then
 228         if wait_until_ready ; then
 229             set_ctdb_variables
 230         else
 231             RETVAL=1
 232             pkill -9 -f $ctdbd >/dev/null 2>&1
 233         fi
 234     fi
 235
 236     case $init_style in
 237         suse)
 238             set_retval $RETVAL
 239             rc_status -v
 240             ;;
 241         redhat)
 242             [ $RETVAL -eq 0 ] && success || failure
 243             echo
 244             ;;
 245     esac
 246
 247     return $RETVAL
 248 }
 249
 250 stop() {
 251     echo -n $"Shutting down ctdbd service: "
 252     pkill -0 -f $ctdbd || {
 253         echo -n "  Warning: ctdbd not running ! "
 254         case $init_style in
 255             suse)
 256                 rc_status -v
 257                 ;;
 258             redhat)
 259                 echo ""
 260                 ;;
 261         esac
 262         return 0
 263     }
 264     ctdb shutdown >/dev/null 2>&1
 265     RETVAL=$?
 266     count=0
 267     while pkill -0 -f $ctdbd ; do
 268         sleep 1
 269         count=$(($count + 1))
 270         [ $count -gt 10 ] && {
 271             echo -n $"killing ctdbd "
 272             pkill -9 -f $ctdbd
 273             pkill -9 -f $CTDB_BASE/events.d/
 274         }
 275     done
 276     case $init_style in
 277         suse)
 278             # re-set the return code to the recorded RETVAL in order
 279             # to print the correct status message
 280             set_retval $RETVAL
 281             rc_status -v
 282             ;;
 283         redhat)
 284             [ $RETVAL -eq 0 ] && success || failure
 285             [ $RETVAL -eq 0 ] && rm -f /var/lock/subsys/ctdb
 286             echo ""
 287             ;;
 288     esac
 289     return $RETVAL
 290 }
 291
 292 restart() {
 293     stop
 294     start
 295 }
 296
 297 status() {
 298     echo -n $"Checking for ctdbd service: "
 299     ctdb ping >/dev/null 2>&1 || {
 300         RETVAL=$?
 301         echo -n "  ctdbd not running. "
 302         case $init_style in
 303             suse)
 304                 set_retval $RETVAL
 305                 rc_status -v
 306                 ;;
 307             redhat)
 308                 if [ -f /var/lock/subsys/ctdb ]; then
 309                         echo $"ctdb dead but subsys locked"
 310                         RETVAL=2
 311                 else
 312                         echo $"ctdb is stopped"
 313                         RETVAL=3
 314                 fi
 315                 ;;
 316         esac
 317         return $RETVAL
 318     }
 319     echo ""
 320     ctdb status
 321 }
 322
 323
 324 case "$1" in
 325     start)
 326         start
 327         ;;
 328     stop)
 329         stop
 330         ;;
 331     restart|reload|force-reload)
 332         restart
 333         ;;
 334     status)
 335         status
 336         ;;
 337     condrestart|try-restart)
 338         ctdb status > /dev/null && restart || :
 339         ;;
 340     cron)
 341         # used from cron to auto-restart ctdb
 342         ctdb status > /dev/null || restart
 343         ;;
 344     *)
 345         echo $"Usage: $0 {start|stop|restart|reload|force-reload|status|cron|condrestart|try-restart}"
 346         exit 1
 347 esac
 348
 349 exit $?