ctdb/config/events.d/70.iscsi

   1 #!/bin/sh
   2
   3 # CTDB event script for TGTD based iSCSI
   4
   5 [ -n "$CTDB_BASE" ] || \
   6     export CTDB_BASE=$(cd -P $(dirname "$0") ; dirname "$PWD")
   7
   8 . $CTDB_BASE/functions
   9
  10 service_name="iscsi"
  11
  12 loadconfig
  13
  14 ctdb_start_stop_service
  15
  16 is_ctdb_managed_service || exit 0
  17
  18 [ -z "$CTDB_START_ISCSI_SCRIPTS" ] && {
  19         echo "No iscsi start script directory found"
  20         exit 0
  21 }
  22
  23 case "$1" in
  24     ipreallocated)
  25         all_ips=$(ctdb -X ip | tail -n +2)
  26
  27         # Block the iSCSI port.  Only block for the address families
  28         # we have configured.  This copes with, for example, ip6tables
  29         # being unavailable on an IPv4-only system.
  30         have_ipv4=false
  31         have_ipv6=false
  32         while IFS='|' read x ip pnn x ; do
  33             case "$ip" in
  34                 *:*) have_ipv6=true ;;
  35                 *)   have_ipv4=true ;;
  36                 esac
  37         done <<EOF
  38 $all_ips
  39 EOF
  40         if $have_ipv4 ; then
  41             iptables -I INPUT 1 -p tcp --dport 3260 -j DROP
  42         fi
  43         if $have_ipv6 ; then
  44             ip6tables -I INPUT 1 -p tcp --dport 3260 -j DROP
  45         fi
  46
  47         # Stop iSCSI daemon
  48         killall -9 tgtd >/dev/null 2>/dev/null
  49
  50         ctdb_get_pnn
  51         [ -n "$pnn" ] || die "Failed to get node pnn"
  52
  53         # Start iSCSI daemon
  54         tgtd >/dev/null 2>&1
  55
  56         # Run a script for each currently hosted public IP address
  57         ips=$(echo "$all_ips" | awk -F'|' -v pnn=$pnn '$3 == pnn {print $2}')
  58         for ip in $ips ; do
  59             script="${CTDB_START_ISCSI_SCRIPTS}/${ip}.sh"
  60             if [ -x "$script" ] ; then
  61                 echo "Starting iSCSI service for public address ${ip}"
  62                 "$script"
  63             fi
  64         done
  65
  66         # Unblock iSCSI port.  These can be unconditional (compared to
  67         # blocking above), since errors are redirected.
  68         while iptables -D INPUT -p tcp --dport 3260 -j DROP >/dev/null 2>&1 ; do
  69             :
  70         done
  71         while ip6tables -D INPUT -p tcp --dport 3260 -j DROP >/dev/null 2>&1 ; do
  72             :
  73         done
  74
  75         ;;
  76
  77     shutdown)
  78         # Shutdown iSCSI daemon when ctdb goes down
  79         killall -9 tgtd >/dev/null 2>&1
  80         ;;
  81
  82     monitor)
  83         ctdb_check_tcp_ports 3260 || exit $?
  84         ;;
  85
  86     *)
  87         ctdb_standard_event_handler "$@"
  88         ;;
  89 esac
  90
  91 exit 0