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-rwxr-xr-xsrc/helpers/vyos-vrrp-conntracksync.sh154
1 files changed, 154 insertions, 0 deletions
diff --git a/src/helpers/vyos-vrrp-conntracksync.sh b/src/helpers/vyos-vrrp-conntracksync.sh
new file mode 100755
index 000000000..4501aa63e
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+++ b/src/helpers/vyos-vrrp-conntracksync.sh
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+#!/bin/sh
+#
+# (C) 2008 by Pablo Neira Ayuso <pablo@netfilter.org>
+#
+# This software may be used and distributed according to the terms
+# of the GNU General Public License, incorporated herein by reference.
+#
+# Description:
+#
+# This is the script for primary-backup setups for keepalived
+# (http://www.keepalived.org). You may adapt it to make it work with other
+# high-availability managers.
+#
+# Modified by : Mohit Mehta <mohit@vyatta.com>
+# Slight modifications were made to this script for running with Vyatta
+# The original script came from 0.9.14 debian conntrack-tools package
+#
+#
+
+CONNTRACKD_BIN=/usr/sbin/conntrackd
+CONNTRACKD_LOCK=/var/lock/conntrack.lock
+CONNTRACKD_CONFIG=/etc/conntrackd/conntrackd.conf
+FACILITY=daemon
+LEVEL=notice
+TAG=conntrack-tools
+LOGCMD="logger -t $TAG -p $FACILITY.$LEVEL"
+VRRP_GRP="VRRP sync-group [$2]"
+FAILOVER_STATE="/var/run/vyatta-conntrackd-failover-state"
+
+$LOGCMD "vyatta-vrrp-conntracksync invoked at `date`"
+
+
+if [ ! -e $FAILOVER_STATE ]; then
+ mkdir -p /var/run
+ touch $FAILOVER_STATE
+fi
+
+case "$1" in
+ master)
+ echo MASTER at `date` > $FAILOVER_STATE
+ $LOGCMD "`uname -n` transitioning to MASTER state for $VRRP_GRP"
+ #
+ # commit the external cache into the kernel table
+ #
+ $CONNTRACKD_BIN -C $CONNTRACKD_CONFIG -c
+ if [ $? -eq 1 ]
+ then
+ $LOGCMD "ERROR: failed to invoke conntrackd -c"
+ fi
+
+ #
+ # commit the expect entries to the kernel
+ #
+ $CONNTRACKD_BIN -C $CONNTRACKD_CONFIG -c exp
+ if [ $? -eq 1 ]
+ then
+ $LOGCMD "ERROR: failed to invoke conntrackd -ce exp"
+ fi
+
+ #
+ # flush the internal and the external caches
+ #
+ $CONNTRACKD_BIN -C $CONNTRACKD_CONFIG -f
+ if [ $? -eq 1 ]
+ then
+ $LOGCMD "ERROR: failed to invoke conntrackd -f"
+ fi
+
+ #
+ # resynchronize my internal cache to the kernel table
+ #
+ $CONNTRACKD_BIN -C $CONNTRACKD_CONFIG -R
+ if [ $? -eq 1 ]
+ then
+ $LOGCMD "ERROR: failed to invoke conntrackd -R"
+ fi
+
+ #
+ # send a bulk update to backups
+ #
+ $CONNTRACKD_BIN -C $CONNTRACKD_CONFIG -B
+ if [ $? -eq 1 ]
+ then
+ $LOGCMD "ERROR: failed to invoke conntrackd -B"
+ fi
+ ;;
+ backup)
+ echo BACKUP at `date` > $FAILOVER_STATE
+ $LOGCMD "`uname -n` transitioning to BACKUP state for $VRRP_GRP"
+ #
+ # is conntrackd running? request some statistics to check it
+ #
+ $CONNTRACKD_BIN -C $CONNTRACKD_CONFIG -s
+ if [ $? -eq 1 ]
+ then
+ #
+ # something's wrong, do we have a lock file?
+ #
+ if [ -f $CONNTRACKD_LOCK ]
+ then
+ $LOGCMD "WARNING: conntrackd was not cleanly stopped."
+ $LOGCMD "If you suspect that it has crashed:"
+ $LOGCMD "1) Enable coredumps"
+ $LOGCMD "2) Try to reproduce the problem"
+ $LOGCMD "3) Post the coredump to netfilter-devel@vger.kernel.org"
+ rm -f $CONNTRACKD_LOCK
+ fi
+ $CONNTRACKD_BIN -C $CONNTRACKD_CONFIG -d
+ if [ $? -eq 1 ]
+ then
+ $LOGCMD "ERROR: cannot launch conntrackd"
+ exit 1
+ fi
+ fi
+ #
+ # shorten kernel conntrack timers to remove the zombie entries.
+ #
+ $CONNTRACKD_BIN -C $CONNTRACKD_CONFIG -t
+ if [ $? -eq 1 ]
+ then
+ $LOGCMD "ERROR: failed to invoke conntrackd -t"
+ fi
+
+ #
+ # request resynchronization with master firewall replica (if any)
+ # Note: this does nothing in the alarm approach.
+ #
+ $CONNTRACKD_BIN -C $CONNTRACKD_CONFIG -n
+ if [ $? -eq 1 ]
+ then
+ $LOGCMD "ERROR: failed to invoke conntrackd -n"
+ fi
+ ;;
+ fault)
+ echo FAULT at `date` > $FAILOVER_STATE
+ $LOGCMD "`uname -n` transitioning to FAULT state for $VRRP_GRP"
+ #
+ # shorten kernel conntrack timers to remove the zombie entries.
+ #
+ $CONNTRACKD_BIN -C $CONNTRACKD_CONFIG -t
+ if [ $? -eq 1 ]
+ then
+ $LOGCMD "ERROR: failed to invoke conntrackd -t"
+ fi
+ ;;
+ *)
+ echo UNKNOWN at `date` > $FAILOVER_STATE
+ $LOGCMD "ERROR: `uname -n` unknown state transition for $VRRP_GRP"
+ echo "Usage: vyatta-vrrp-conntracksync.sh {master|backup|fault}"
+ exit 1
+ ;;
+esac
+
+exit 0