Health monitor to check File on server

Hi David,

 

 

What protocol do you want to use to check for the file?

 

 

Do you want to check if the file exists or contains a specific string?

 

 

Is this for LTM or GTM?

 

 

Aaron

Hi Aaron,

 

 

Thanks for your response.

 

 

LTM Big IP 6900 v10.2

 

 

I would check if the file exist.

 

I test with monitor F5 SMB without success

 

 

Thanks a lot

 

Regards

 

David

 

 

 

Hi David,

 

 

There is an SMB monitor for LTM. You can see it in the LTM monitors section of the GUI when you click create. In looking at past cases, it seems that there might be a problem with it though.

 

 

If you have any problems testing the inbuilt monitor, I'll upload a SMB/CIFS external monitor script to the monitoring codeshare today. I have a customer who needs this for GTM. I'll reply with a link once I'm done testing it.

 

 

Aaron

Hi,

 

 

There is a bug for default smb monitor in version 10.2.0

 

 

You must create a script in /usr/bin/monitors/SMB_Monitor_custom with the rights 755

 

 

And then add in local traffic/monitors menu an external script with the arguments "login" "password" "path"

 

 

 

http://devcentral.f5.com/wiki/default.aspx/AdvDesignConfig/Windows_File_Share_Monitor_SMB_CIFS.html

 

 

or this script

 

 

!/bin/bash

 

 

Save as /usr/bin/monitors/SMB_monitor_custom.bash

 

Make executable using chmod 755 /usr/bin/monitors/SMB_monitor_custom.bash

 

 

Use a custom shell command to perform a health check of the pool member IP address and port

 

 

Log debug to local0.debug (/var/log/ltm)?

 

Check if a variable named DEBUG exists from the monitor definition

 

This can be set using a monitor variable DEBUG=0 or 1

 

 

These arguments are supplied for all calls to that monitor

 

command : smbget -u login -p pass -w domain smb://server/path_to_file

 

$1 = IP_V6

 

$2 = port

 

$3 = login

 

$4 = pass

 

$5 = domain

 

$6 = complete path to the (empty) file to check

 

 

if [ -n "$DEBUG" ]

 

then

 

if [ $DEBUG -eq 1 ]; then logger -p local0.debug "EAV `basename $0`: \$DEBUG: $DEBUG"; fi

 

else

 

If the monitor config didn't specify debug, enable/disable it here

 

DEBUG=0

 

logger -p local0.debug "EAV `basename $0`: \$DEBUG: $DEBUG"

 

fi

 

 

Remove IPv6/IPv4 compatibility prefix (LTM passes addresses in IPv6 format)

 

IP=`echo $1 | sed 's/::ffff://'`

 

 

Save the port for use in the shell command

 

PORT=$2

 

 

Check if there is a prior instance of the monitor running

 

pidfile="/var/run/`basename $0`.$IP.$PORT.pid"

 

if [ -f $pidfile ]

 

then

 

kill -9 `cat $pidfile` > /dev/null 2>&1

 

logger -p local0.error "EAV `basename $0`: exceeded monitor interval, needed to kill ${IP}:${PORT} with PID `cat $pidfile`"

 

fi

 

 

Add the current PID to the pidfile

 

echo "$$" > $pidfile

 

 

Debug

 

if [ $DEBUG -eq 1 ]

 

then

 

Customize the log statement here if you want to log the command run

 

logger -p local0.debug "EAV `basename $0`: Running for ${IP}:${PORT} using smbget -u "$3" -p "$4" -w "$5" -O -q smb://${IP}/$6"

 

fi

 

 

Send the request request and check the response

 

smbget -u "$3" -p "$4" -w "$5" -O -q smb://${IP}/$6 >/dev/null 2>&1

 

 

Check if the command ran successfully

 

Note that any standard output will result in the script execution being stopped

 

So do any cleanup before echoing to STDOUT

 

if [ $? -eq 1 ]

 

then

 

if [ $DEBUG -eq 1 ]; then logger -p local0.debug "EAV `basename $0`: Succeeded for ${IP}:${PORT}"; fi

 

echo "UP"

 

else

 

if [ $DEBUG -eq 1 ]; then logger -p local0.debug "EAV `basename $0`: Failed for ${IP}:${PORT}"; fi

 

fi

 

 

rm -f $pidfile

 

 

 

Thx Hoolio for ur help

 

David

 

 

Hi David,

 

 

Sorry I forgot to post a link to the script here when I finished it. Did you open a case with F5 Support to determine there is a bug with the SMB monitor in 10.2.0? If so, what's the BZ ID?

 

 

Did you have any problems with the Codeshare example? http://devcentral.f5.com/wiki/AdvDesignConfig.Windows-File-Share-Monitor-SMB-CIFS.ashx

 

 

Thanks, Aaron

Hi Hoolio,

 

 

I didn't open a case with F5 but with my integrator Télindus.

 

 

I didn't have any pb with the codeshare example. It works good ;) ;)

 

 

Thanks a lot

 

David