Scripted monitoring

[Zuke]

We have a requirement for a new kind of monitoring for a database application.

Two pool members are actively listening on all ports. The customer is requesting a monitor that will

1) authenticate using a username/password to one pool member

2) execute a sudo command referencing a script on the box.

3) Then, based on the return code being a 0 or 1, send the traffic to one pool member or another.

[Sajid]

https://devcentral.f5.com/s/articles/ltm-external-monitors-troubleshooting

https://devcentral.f5.com/s/articles/template-for-external-monitors

[Zuke]

Following the steps listed in the article, I created a script in /usr/bin/monitors.

However when I create the script in that directory, chmod to 755, I still don't see it on the GUI. I get an error when I try to add it and specify the path.

[:/S1-green-P:Active:In Sync] monitors # pwd
/usr/bin/monitors
[/S1-green-P:Active:In Sync] monitors # ls -l | grep custom
-rwxr-xr-x. 1 root webusers 2379 2019-09-17 12:59 custom_monitor.bash
(tmos)# modify ltm monitor external custom_monitor run "/usr/bin/custom_monitor.bash"
0107134a:3: File object by name (/usr/bin/custom_monitor.bash) is missing.
 
 
(tmos)# modify ltm monitor external custom_monitor run
Options:
 none
Configuration Items:
 Exchange2016-smtp.app/  arg_example       sample_monitor
 
 

[Hedbert_Carrasc]

Because the correct path is /usr/bin/monitors/custom_monitor.bash. For instance, the command is

# modify ltm monitor external custom_monitor run "/usr/bin/monitors/custom_monitor.bash"