config/ctdb-crash-cleanup.sh

   1 #!/bin/sh
   2 #
   3 # This script can be called from a cronjob to automatically drop/release
   4 # all public ip addresses if CTDBD has crashed or stopped running.
   5 #
   6
   7 [ -z "$CTDB_BASE" ] && {
   8     CTDB_BASE=/etc/ctdb
   9 }
  10
  11 [ -z "$CTDB_PUBLIC_ADDRESSES" ] && {
  12         CTDB_PUBLIC_ADDRESSES=$CTDB_BASE/public_addresses
  13 }
  14
  15 [ ! -f "$CTDB_PUBLIC_ADDRESSES" ] && {
  16         echo "No public addresses file found. Cant cleanup."
  17         exit 1
  18 }
  19
  20 # if ctdb is running, just return
  21 ctdb status 2>/dev/null && {
  22     exit 0
  23 }
  24
  25 (cat /etc/sysconfig/ctdb | egrep "^CTDB_NATGW_PUBLIC_IP" | sed -e "s/.*=//" -e "s/\/.*//";cat "$CTDB_PUBLIC_ADDRESSES" | cut -d/ -f1) | while read _IP; do
  26         _IP_HELD=`/sbin/ip addr show | grep "inet $_IP/"`
  27         [ -z "$_IP_HELD" ] || {
  28                 _IFACE=`echo $_IP_HELD | sed -e "s/.*\s//"`
  29                 _NM=`echo $_IP_HELD | sed -e "s/.*$_IP\///" -e "s/\s.*//"`
  30                 logger "Removing public address $_IP/$_NM from device $_IFACE"
  31                 /sbin/ip addr del $_IP/$_NM dev $_IFACE
  32         }
  33 done
  34
  35