Forum Discussion

DLP's avatar
DLP
Icon for Nimbostratus rankNimbostratus
Apr 09, 2020

Send email on reaching bandwidth threshold

Hello Devcentral!   I've been looking for a way to send out an email from a F5 BIG-IP (12.1.2) but I cannot find anything that tells me if a) this can be done and b) how to do that. I do have ASM...
alert
application delivery
bandwith
BIG-IP
email
LTM
DLP's avatar
DLP
Icon for Nimbostratus rankNimbostratus

Ah thanks, I'll look into that then if there is no "built-in" way. I prefer not using crons because they don't survive upgrades. Do you happen to have an example?

ldesfosses's avatar
ldesfosses
Icon for Cirrus rankCirrus
Apr 15, 2020

About the cron not surviving the upgrades, what I like to do is "export the cron". I've a linux box with a cron, and this cron execute command remotely via SSH.

For example, install this following command (replace "SEND MAIL" by the method you use to send mail obviously 😅) on a cron of a computer with the SSH Key added authorized key and the user must have the advanced shell (let me know if you have question about this) : 

ssh youruser@yourF5IP grep "Bandwidth exceeded by 75" /var/log/ltm > /dev/null
 if [ $? == 0 ] ; then  echo "SEND MAIL"; fi
 

That said, I don't like this solution, it would be far better for you to lose time installing a Nagios or anything that can monitor and keep link usage by SNMP.