Forum Discussion

Michaelyang's avatar
Michaelyang
Icon for Cirrostratus rankCirrostratus
Dec 01, 2022

About script

Hello, I want to make a script that sends alerts to /var/log/ltm every minute when the pool is not up. Here is the script I designed:     modify script pool_script { app-service none de...
application delivery
  • Kai_Wilke's avatar
    Kai_Wilke
    Dec 01, 2022

    Hi MIchaelyang,

    check the iCall script below to get a picture how to LTM configs could be enumerated with foreach loops.  No need to [exec] native BASH commands... 😉

     

    sys icall handler periodic check_pool_state {
    interval 120
    script check_pool_state
}
sys icall script check_pool_state {
   app-service none
   definition {
		tmsh::log_dest file
		tmsh::log_level debug
		foreach temp(pool_config) [tmsh::get_config /ltm pool] {
			set temp(pool_name) [tmsh::get_name $temp(pool_config)]
			if { [tmsh::show /ltm pool $temp(pool_name)] contains "Availability           : available" } then {
				# Everything is fine... 	
			} else {
				tmsh::log debug "Pool Check: $temp(pool_name) is unhealthy"
			}
		}
   }
   description none
   events none
}

     

     Cheers, Kai

Kai_Wilke's avatar
Kai_Wilke
Icon for MVP rankMVP

As i said... you are not passing the $pool variable into the the "tmsh::show ltm virtual" command. In this case you check if a single pool of all your pools is available. It should be "tmsh::show ltm virtual $pool"

Beside of this the [exec] part can be avoided... Give me a sec to give you a quick coding how to access and enumerate LTM configurations within TMSH scripts...

Cheers, Kai

Michaelyang's avatar
Michaelyang
Icon for Cirrostratus rankCirrostratus
Dec 01, 2022

Hi Kai_Wike,

Sorry, I sent the wrong one
I've updated it again...

Thank you

  • Kai_Wilke's avatar
    Kai_Wilke
    Icon for MVP rankMVP
    Dec 01, 2022

    Still the same problem. Check the script I've just posted. During the foreach loop it passes the currently processed $temp(pool_name) to the [tmsh::show] command, so that you analyse the state of the just processed pool. If you dont pass the pool name to the show command, then you would analyse all pools at the same time.

    Cheers, Kai

    • Michaelyang's avatar
      Michaelyang
      Icon for Cirrostratus rankCirrostratus
      Dec 01, 2022

      Hi Kai_Wike,

      Thanks for your help.

      I'll look into it..

      Thanks

      • Kai_Wilke's avatar
        Kai_Wilke
        Icon for MVP rankMVP
        Dec 01, 2022

        You are welcome.

        I pretty much like to see you enjoying iCall. You truly deserve Kudos for your creativity 😉

        Cheers, Kai