Interface Failsafe Script

Dears,

 

I am currently using an external Interface Failsafe script to monitor Data Trunk on F5 Viprion 10.2.4 platform this Trunk is connected to the core switch in our 3G network, i have find out that there is no output coming from b interface show command which caused the script to consider that the trunk is down which is not the fact, there for I faced a toggle action with no logic reason, i have no idea why is that , CAN I FIND ANY HELP ?

 

 

 

!/bin/bash

 

(c) Copyright 2007 F5 Networks, Inc.

 

Kirk Bauer

 

Pass in each interface to monitor via the Arguments field in the GUI.

 

Each interface may be one of the following:

 

Physical interface (1.1, 1.2, etc)

 

Name of a trunk (if at least one interface is up the trunk is considered up)

 

trunk=min where trunk is the name of the trunk and min is the minimum number

 

of physical interfaces in the trunk that must be up

 

 

For example, the following arguments will make sure that the 1.1 interface is

 

up and test_trunk has at least two interfaces in it that are up:

 

1.1 test_trunk=2

 

 

To test on command-line, use fillers for first two arguments:

 

/usr/bin/monitors/interface_monitor.sh X X 1.1 1.2 1.3 ...

 

 

Collect arguments (first remove IP and port as we don't use those)

 

shift

 

shift

 

interfaces="$*"

 

b interface show > /tmp/b_interface_show

 

for i in $interfaces ; do

 

if grep -q "^ *$i " /tmp/b_interface_show ; then

 

Physical Interface

 

status=`grep "^ *$i " /tmp/b_interface_show | awk '{print $2}'`

 

if [ "$status" != "UP" ] ; then

 

logger -p local0.notice "$MON_TMPL_NAME: interface $i is not up (status: $status)"

 

exit 1

 

fi

 

else

 

Not a physical interface, assume a trunked interface

 

trunk="$i"

 

reqcount=1

 

if echo "$trunk" | grep -q '=' ; then

 

trunk="$(echo "$i" | sed 's/=.*//')"

 

reqcount="$(echo "$i" | sed 's/^.*=//')"

 

fi

 

upcount=0

 

for status in `grep "$trunk" /tmp/b_interface_show | awk '{print $2}'` ; do

 

[ "$status" == "UP" ] && upcount=$[$upcount+1]

 

done

 

if [ $upcount -lt $reqcount ] ; then

 

logger -p local0.notice "$MON_TMPL_NAME: trunk $trunk is down (has only $upcount active interfaces, $reqcount required)"

 

cp /tmp/b_interface_show /var/tmp/b_interface_show_`date +%H.%M.%S`

 

exit 1

 

fi

 

fi

 

done

 

All specified interfaces are up...

 

echo "up"

 

exit 0