Package: cluster-agents
Severity: normal
Tags: patch
Ommited to actually include the attachment.
#!/bin/sh
#
# Copyright (c) 2013, Tim Small <t...@seoss.co.uk>
# Cleanup monitor action, add initial burst behaviour.
#
# Copyright (c) 2006, Huang Zhen <zhen.hu...@gmail.com>
# Converting original heartbeat RA to OCF RA.
#
# Copyright (C) 2004 Horms <ho...@verge.net.au>
#
# Based on IPaddr2: Copyright (C) 2003 Tuomo Soini <t...@foobar.fi>
#
# License: GNU General Public License (GPL)
# Support: linux...@lists.linux-ha.org
#
# This script send out gratuitous Arp for an IP address
#
# It can be used _instead_ of the IPaddr2 or IPaddr resource
# to send gratuitous arp for an IP address on a given interface,
# without adding the address to that interface. I.e. if for
# some reason you want to send gratuitous arp for addresses
# managed by IPaddr2 or IPaddr on an additional interface.
#
# OCF parameters are as below:
# OCF_RESKEY_ip
# OCF_RESKEY_nic
#
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of version 2 of the GNU General Public License as
# published by the Free Software Foundation.
#
# This program is distributed in the hope that it would be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
#
# Further, this software is distributed without any warranty that it is
# free of the rightful claim of any third person regarding infringement
# or the like. Any license provided herein, whether implied or
# otherwise, applies only to this software file. Patent licenses, if
# any, provided herein do not apply to combinations of this program with
# other software, or any other product whatsoever.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write the Free Software Foundation,
# Inc., 59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
#
#######################################################################
# Initialization:
: ${OCF_FUNCTIONS_DIR=${OCF_ROOT}/resource.d/heartbeat}
. ${OCF_FUNCTIONS_DIR}/.ocf-shellfuncs
SENDARP=$HA_BIN/send_arp
SENDARPPIDDIR=${HA_RSCTMP}
RESIDUAL=""
SENDARPPIDFILE="$SENDARPPIDDIR/send_arp-${OCF_RESKEY_ip}-${OCF_RESKEY_nic}"
# Set default values
: ${ARP_BURST_INTERVAL_MS=200} # milliseconds between initial trunch of ARPs
: ${ARP_BURST_REPEAT=20} # repeat count
: ${ARP_INTERVAL_MS=30000} # milliseconds between ARPs = 30s
: ${ARP_REPEAT=2147483647} # repeat count
: ${ARP_DST=ffffffffffff} # destination MAC address for sent packets
#######################################################################
sendarp_meta_data() {
cat <<END
<?xml version="1.0"?>
<!DOCTYPE resource-agent SYSTEM "ra-api-1.dtd">
<resource-agent name="SendArp" version="1.0">
<version>1.0</version>
<longdesc lang="en">
This RA can be used _instead_ of the IPaddr2 or IPaddr RA to
send gratuitous ARP for an IP address on a given interface,
without adding the address to that interface. For example,
if for some resaon you wanted to send gratuitous ARP for
addresses managed by IPaddr2 or IPaddr on an additional
interface.
</longdesc>
<shortdesc lang="en">Broadcasts unsolicited ARP announcements</shortdesc>
<parameters>
<parameter name="ip" unique="0" required="1">
<longdesc lang="en">
The IP address for sending ARP packet.
</longdesc>
<shortdesc lang="en">IP address</shortdesc>
<content type="string" default="" />
</parameter>
<parameter name="nic" unique="0" required="1">
<longdesc lang="en">
The NIC for sending ARP packet.
</longdesc>
<shortdesc lang="en">NIC</shortdesc>
<content type="string" default="" />
</parameter>
</parameters>
<actions>
<action name="start" timeout="20s" />
<action name="stop" timeout="20s" />
<action name="monitor" depth="0" timeout="20" interval="10" />
<action name="meta-data" timeout="5" />
<action name="validate-all" timeout="20s" />
</actions>
</resource-agent>
END
}
#######################################################################
sendarp_usage() {
cat <<END
usage: $0 {start|stop|monitor|validate-all|meta-data}
Expects to have a fully populated OCF RA-compliant environment set.
END
}
#
# Check if send_arp daemon is running.
# We return stopped or running.
#
sendarp_status() {
pidfileexists= [ -f $SENDARPPIDFILE ]
start-stop-daemon --stop --exec $SENDARP --pidfile ${SENDARPPIDFILE} --signal 0
rc=$?
if [ $rc = 0 ]; then
return $OCF_SUCCESS
else
if [ -f $SENDARPPIDFILE ]; then
ocf_log err "pid file still in existence, but no daemon running"
return $OCF_ERR_GENERIC
else
return $OCF_NOT_RUNNING
fi
fi
}
#
# Send gratuitous arp
#
sendarp_start() {
ocf_log debug start
sendarp_validate
if [ $? = $OCF_ERR_ARGS ]; then
return $OCF_ERR_ARGS
fi
sendarp_status
if [ $? = $OCF_SUCCESS ]; then
return $OCF_SUCCESS
fi
[ -r ${HA_CONFDIR}/arp_config ] && . ${HA_CONFDIR}/arp_config
if [ -r "${HA_CONFDIR}/arp_config:${TARGET_OCF_RESKEY_nic}" ]; then
. "${HA_CONFDIR}/arp_config:${TARGET_OCF_RESKEY_nic}"
fi
INITIAL_BURST_ARGS="-i $ARP_BURST_INTERVAL_MS -r $ARP_BURST_REPEAT -p $SENDARPPIDFILE $OCF_RESKEY_nic $OCF_RESKEY_ip auto $OCF_RESKEY_ip $ARP_DST"
ARGS="-i $ARP_INTERVAL_MS -r $ARP_REPEAT -p $SENDARPPIDFILE $OCF_RESKEY_nic $OCF_RESKEY_ip auto $OCF_RESKEY_ip $ARP_DST"
if ! $SENDARP $INITIAL_BURST_ARGS
then
ocf_log err "Could not send gratuitous arps - initial burst"
return $OCF_ERR_GENERIC
fi
if ! start-stop-daemon --start --background --exec $SENDARP --pidfile ${SENDARPPIDFILE} -- $ARGS
then
ocf_log err "Could not send gratuitous arps - background process"
return $OCF_ERR_GENERIC
fi
return $OCF_SUCCESS
}
#
# Stop sending gratuitous arp
#
sendarp_stop() {
sendarp_validate
if [ $? = $OCF_ERR_ARGS ]; then
return $OCF_ERR_ARGS
fi
rc=$OCF_SUCCESS
start-stop-daemon --stop --oknodo --exec $SENDARP --pidfile ${SENDARPPIDFILE} --retry=TERM/30/KILL/5
rc=$?
case $rc in
0)
rm -f "$SENDARPPIDFILE"
rc=$OCF_SUCCESS
;;
*)
ocf_log warn "Could not kill previously running send_arp for $OCF_RESKEY_ip"
rc=$OCF_ERR_GENERIC
;;
esac
return $rc
}
sendarp_monitor() {
return sendarp_status
}
sendarp_validate() {
if [ -z "$OCF_RESKEY_nic" -o -z "$OCF_RESKEY_ip" -o -n "$RESIDUAL" ]
then
return $OCF_ERR_ARGS
fi
return $OCF_SUCCESS
}
case $__OCF_ACTION in
meta-data) sendarp_meta_data
exit $OCF_SUCCESS
;;
start) sendarp_start
;;
stop) sendarp_stop
;;
monitor) sendarp_status
;;
status) sendarp_status
if [ $? = $OCF_SUCCESS ]; then
echo "running"
exit $OCF_SUCCESS;
else
echo "stopped"
exit $OCF_NOT_RUNNING;
fi
;;
validate-all) sendarp_validate
;;
usage|help) sendarp_usage
exit $OCF_SUCCESS
;;
*) sendarp_usage
exit $OCF_ERR_UNIMPLEMENTED
;;
esac
