On Friday 21 November 2008 03:12:56 Marian Marinov wrote:
> 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
Ups, I forgot some things :)
Here is a patch for my script:
--- link-state.old 2008-11-21 03:26:53.000000000 +0200
+++ link-state 2008-11-21 03:26:56.000000000 +0200
@@ -23,21 +23,21 @@ 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'
+ip=(10.0.0.1 10.0.0.5)
+netmask=(255.255.255.252 255.255.255.252)
function ifstatus() {
+ count=0
for iface in $interfaces; do
link_status=$(ethtool $iface|awk '/Link/{print $3}')
- echo -n "Checking link status on interface $iface "
+ echo -n "Checking link status on interface
$iface(${ip[$count]}) "
if [ "$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
+ let count++
done
}
function ifstop() {
@@ -63,6 +63,7 @@ function ifstart() {
echo -ne "\\033[60G[\\033[1;38mFAILED\\033[0;39m]\r\n"
exit 1
fi
+ let count++
done
}
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