On Wednesday 19 November 2008 16:49:55 KAD_USER wrote:
> Hi,
>
> Running SLES10.2 we have the following setup:
>
> Node1:
> - eth0 and eth1 are bonded into bond0, eth3 is used for heartbeat.
> - LINUX HA has been setup with one resource which uses bond0 to provide
> another virtual IP-address has been setup.
>
> Node2:
> - eth0 and eth1 are bonded into bond0, eth3 is used for heartbeat.
> - LINUX HA has been setup and all resources are inherited from Node1.
>
> Issue:
> When someone pulls the ethernet cable on eth0 the node continues to work,
> but when someone pulls both eth0 and eth1 and no data can leave or enter
> the system one would expect the resource which uses bond0 to fail and
> perform a failover of resources as would a default installation of a
> Windows Cluster do!
>
> Is there a way to monitor resources like link status on ethernet cards and
> then perform a failover once it is down?
Hi,
I don't know if there is a script or resource agent ready for that, but here
are my 2 bits of code that are a simple LSB script that can help you monitor
this resource.
I hope you will like the script. You should be able to configure this script
as a standard LSB resource in cib.xml.
#!/bin/bash
#
# link-state
#
# chkconfig: - 26 74
# description: Network Interfaces link state monitoring script
### BEGIN INIT INFO
# Provides: link-state
# Required-Start:
# Required-Stop:
# Default-Start:
# Default-Stop:
# Short-Description: provides monitoring and reconfiguration
# Description: provides monitoring and reconfiguration
# for various network interfaces
with easy
# configuration, portable on
different
# distributions
### END INIT INFO
# set secure PATH
PATH="/bin:/usr/bin:/sbin:/usr/sbin"
interfaces='eth0 eth1'
ip[0]='10.0.0.1'
ip[1]='10.0.0.5'
netmask[0]='255.255.255.252'
netmask[1]='255.255.255.252'
function ifstatus() {
for iface in $interfaces; do
link_status=$(ethtool $iface|awk '/Link/{print $3}')
echo -n "Checking link status on interface $iface "
if [ "$iface" == "yes" ]; then
echo -ne "\\033[60G[\\033[0;32m OK \\033[0;39m]\r\n"
else
echo -ne "\\033[60G[\\033[1;38mFAILED\\033[0;39m]\r\n"
exit 1
fi
done
}
function ifstop() {
for iface in $interfaces; do
echo -n "Stoping interface $iface "
ifconfig $iface down
if [ "$?" == 0 ]; then
echo -ne "\\033[60G[\\033[0;32m OK \\033[0;39m]\r\n"
else
echo -ne "\\033[60G[\\033[1;38mFAILED\\033[0;39m]\r\n"
exit 1
fi
done
}
function ifstart() {
count=0
for iface in $interfaces; do
echo -n "Starting interface $iface "
ifconfig $iface ${ip[$count]} netmask ${netmask[$count]}
if [ "$?" == 0 ]; then
echo -ne "\\033[60G[\\033[0;32m OK \\033[0;39m]\r\n"
else
echo -ne "\\033[60G[\\033[1;38mFAILED\\033[0;39m]\r\n"
exit 1
fi
done
}
case "$1" in
start)
ifstart
;;
stop)
ifstop
;;
restart)
ifstop
ifstart
;;
status)
ifstatus
;;
*)
echo "Usage: $0 start|stop|restart|status"
exit 1
esac
exit 0
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