ctdb/config/ctdbd_wrapper

   1 #!/bin/sh
   2
   3 # ctdbd wrapper - start or stop CTDB
   4
   5 usage ()
   6 {
   7     echo "usage: ctdbd_wrapper { start | stop }"
   8     exit 1
   9 }
  10
  11 [ $# -eq 1 ] || usage
  12
  13 action="$1"
  14
  15 ############################################################
  16
  17 if [ -z "$CTDB_BASE" ] ; then
  18     export CTDB_BASE="/usr/local/etc/ctdb"
  19 fi
  20
  21 . "${CTDB_BASE}/functions"
  22
  23 loadconfig
  24
  25 ctdbd="${CTDBD:-/usr/local/sbin/ctdbd}"
  26
  27 ############################################################
  28
  29 # Only the nested function references its arguments
  30 # shellcheck disable=SC2120
  31 build_ctdb_options ()
  32 {
  33     ctdb_options=""
  34
  35     maybe_set ()
  36     {
  37         # If the given variable isn't set then do nothing
  38         [ -n "$2" ] || return
  39         # If a required value for the variable and it doesn't match,
  40         # then do nothing
  41         [ -z "$3" -o "$3" = "$2" ] || return
  42
  43         val="'$2'"
  44         case "$1" in
  45             --*) sep="=" ;;
  46             -*)  sep=" " ;;
  47         esac
  48         # For these options we're only passing a value-less flag.
  49         if [ -n "$3" ] ; then
  50             val=""
  51             sep=""
  52         fi
  53
  54         ctdb_options="${ctdb_options}${ctdb_options:+ }${1}${sep}${val}"
  55     }
  56
  57     # build up ctdb_options variable from optional parameters
  58     maybe_set "--reclock"                "$CTDB_RECOVERY_LOCK"
  59     maybe_set "--logging"                "$CTDB_LOGGING"
  60     maybe_set "--listen"                 "$CTDB_NODE_ADDRESS"
  61     maybe_set "--dbdir"                  "$CTDB_DBDIR"
  62     maybe_set "--dbdir-persistent"       "$CTDB_DBDIR_PERSISTENT"
  63     maybe_set "--dbdir-state"            "$CTDB_DBDIR_STATE"
  64     maybe_set "--transport"              "$CTDB_TRANSPORT"
  65     maybe_set "-d"                       "$CTDB_DEBUGLEVEL"
  66     maybe_set "--start-as-disabled"      "$CTDB_START_AS_DISABLED"    "yes"
  67     maybe_set "--start-as-stopped "      "$CTDB_START_AS_STOPPED"     "yes"
  68     maybe_set "--no-recmaster"           "$CTDB_CAPABILITY_RECMASTER" "no"
  69     maybe_set "--no-lmaster"             "$CTDB_CAPABILITY_LMASTER"   "no"
  70     maybe_set "--nosetsched"             "$CTDB_NOSETSCHED"           "yes"
  71     maybe_set "--script-log-level"       "$CTDB_SCRIPT_LOG_LEVEL"
  72     maybe_set "--max-persistent-check-errors" "$CTDB_MAX_PERSISTENT_CHECK_ERRORS"
  73 }
  74
  75 export_debug_variables ()
  76 {
  77     [ -n "$CTDB_DEBUG_HUNG_SCRIPT" ] && export CTDB_DEBUG_HUNG_SCRIPT
  78     [ -n "$CTDB_DEBUG_LOCKS" ] && export CTDB_DEBUG_LOCKS
  79 }
  80
  81 ############################################################
  82
  83 start()
  84 {
  85     # build_ctdb_options() takes no arguments
  86     # shellcheck disable=SC2119
  87     build_ctdb_options
  88
  89     export_debug_variables
  90
  91     eval "$ctdbd" "$ctdb_options" || return 1
  92
  93     # Wait until ctdbd has started and is ready to respond to clients.
  94     _timeout="${CTDB_STARTUP_TIMEOUT:-10}"
  95     _count=0
  96     while [ "$_count" -lt "$_timeout" ] ; do
  97         if $CTDB runstate first_recovery startup running >/dev/null 2>&1 ; then
  98             return 0
  99         fi
 100
 101         _count=$((_count + 1))
 102         sleep 1
 103     done
 104
 105     echo "Timed out waiting for initialisation - check logs"
 106     # Attempt a shutdown just in case things are still running
 107     $CTDB shutdown >/dev/null 2>&1
 108     drop_all_public_ips >/dev/null 2>&1
 109     return 1
 110 }
 111
 112 stop()
 113 {
 114         $CTDB shutdown
 115
 116         # The above command is important and needs to stand out, so
 117         # post-check exit status
 118         # shellcheck disable=SC2181
 119         if [ $? -ne 0 ] ; then
 120                 echo "Error while shutting down CTDB"
 121                 drop_all_public_ips >/dev/null 2>&1
 122                 return 1
 123         fi
 124
 125         return 0
 126 }
 127
 128 ############################################################
 129
 130 # Allow notifications for start/stop.
 131 if [ -x "$CTDB_BASE/rc.ctdb" ] ; then
 132     "$CTDB_BASE/rc.ctdb" "$action"
 133 fi
 134
 135 case "$action" in
 136     start) start ;;
 137     stop)  stop  ;;
 138     *)
 139         echo "usage: $0 {start|stop}"
 140         exit 1
 141 esac