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Forum Discussion

ikkut23's avatar
ikkut23
Icon for Altostratus rankAltostratus
Oct 04, 2022

iCall script not working

Hi guys ,    i have a scenario with a pool with two members ,Server A and Server B with priority group activated . Server A - 192.168.16.80 pga 15 Server B 192.168.18.211 pga 10 i created an iCa...
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ikkut23's avatar
ikkut23
Icon for Altostratus rankAltostratus
Oct 05, 2022

Hi Jason thnx a lot , now i`m getting this error on /var/ltm logs  when i execute :

generate sys icall event change_priority

tmsh[19010]: 01420006:3: members: required brace is missing "{"
err scriptd[3868]: 014f0013:3: Script (/Common/pool_member1_down) generated this Tcl error: (script did not successfully complete: (Syntax Error: members: required brace is missing "{"

and when i manually put node down no errors on /var/ltm logs except that pool member monitor is down but no change on priority.

 

Thnx 

JRahm's avatar
JRahm
Icon for Admin rankAdmin
Oct 05, 2022

ah..two things. 

  1. Use tmsh::modify instead of exec, no need to leave the script to modify objects (this is an optimization, not a fix)
  2. Escape your braces:
tmsh::modify ltm pool TeststanbyNode members modify \{ 192.168.18.211:80 \{priority-group 20\}\}
  • ikkut23's avatar
    ikkut23
    Icon for Altostratus rankAltostratus
    Oct 06, 2022

    yeapp that did work , 

    but still cant figure out with smth with alertd,when i mark the node down manually i can see on ltm log that 

    Pool /Common/TeststanbyNode member /Common/192.168.16.80:80 monitor status node down.

    but lets say its not triggering the event

    alert server1-down "Pool /Common/TeststanbyNode /Common/192.168.16.80:80 monitor status node down." {
    exec command="tmsh generate sys icall event change_pga context { { name ip value 192.168.16.80 } {name port value 80} }" }

     

    can you double check ,and also idk if its worth mentioning but Big-IP version is 14.1.2.3.

     

    ah also if i try and run "generate sys icall event .. " it works and script changes the pga.

     

    Thnx

     

    • oscarnet's avatar
      oscarnet
      Icon for Altocumulus rankAltocumulus
      Oct 06, 2022

      HI ikkut23:

      I tested it a little bit The following is my config,

      It can work normally, for your reference

      #
cat /config/user_alert.conf
alert server1-down "Pool /Common/TeststanbyNode member /Common/node_10.1.20.13:80 monitor status down." {
   exec command="tmsh generate sys icall event change_pga context { { name ip value node_10.1.20.13 } {name port value 80} }"
}
#
tmsh list sys icall script pool_member1_down
sys icall script pool_member1_down {
    app-service none
    definition {
        foreach var { ip port } {
            set $var $EVENT::context($var)
        }
        tmsh::modify ltm pool TeststanbyNode members modify \{ $ip:$port \{priority-group 20\} \}
    }
    description none
    events none
}
#
tmsh list sys icall handler triggered change_pga
sys icall handler triggered change_pga {
    script pool_member1_down
    subscriptions {
        change_pga {
            event-name change_pga
        }
    }
}

      have a good day!