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Macaron's avatar
Macaron
Icon for Nimbostratus rankNimbostratus
Oct 09, 2020

Script to find virtual servers with connection mirroring enabled

Hi All, I am working on to turn off connection mirroring on all the legacy VIPs which are causing application performance degradation. Is there a way to automate and discover virtual serv...
application delivery
BIG-IP
LTM
security
  • Dario_Garrido's avatar
    Dario_Garrido
    Oct 16, 2020

    Hello Macaron.

    You need to perform bash engineering. Some examples:

    tmsh list ltm virtual mirror | grep -B1 enabled
tmsh list ltm virtual mirror | grep -B1 enabled | grep ltm | awk '{print $3}'
tmsh list ltm virtual one-line all-properties | grep "mirror enabled" | awk '{print $3}'
tmsh -q -c "cd / ; list ltm recursive one-line all-properties" | grep "mirror enabled" | awk '{print $3}'
# This last one to capture VS located in different partitions.

    Regarding the 1000 records, you should not have any problem, but it's better to execute it when CPU/RAM consumption in management plane is low.

    Regards,

    Dario.

Dario_Garrido's avatar
Dario_Garrido
Icon for MVP rankMVP
Oct 10, 2020

Hello Macaron.

​

You can use some of these commands

## Check Mirroring Enabled
tmsh show sys connection type mirror
tmsh show sys ha-mirror

Regards,

Dario.

  • Macaron's avatar
    Macaron
    Icon for Nimbostratus rankNimbostratus
    Oct 12, 2020

    The first command returned 1200 plus connection records for 37 VIPs in total on F5. I need to identify VIPs which has connection mirroring enabled. Is there any command for that?

    • Dario_Garrido's avatar
      Dario_Garrido
      Icon for MVP rankMVP
      Oct 14, 2020

      Hello Macaron.

      You can check what SNAT IPs are mirroring with the next command:

      tmsh list ltm snat mirror

      The same for those VS that are mirroring their connections:

      tmsh list ltm virtual mirror

      And finally, the same for those VS that are mirroring their persistence records:

      tmsh list ltm virtual mirror persist { $(tmsh list ltm persistence one-line all-properties | grep "mirror enabled" | awk '{print$4}') }

      For disabling mirroring, you just need to modify the 'mirror' option as expected.

      REF - https://support.f5.com/csp/article/K13478

      Please, don't forget to mark this answer as the best to help me for this contribution.

      Regards,

      Dario.

    • Macaron's avatar
      Macaron
      Icon for Nimbostratus rankNimbostratus
      Oct 16, 2020

      Dairo,

      1. Thanks for the reply. when I used this command tmsh list ltm virtual mirror on an F5 with less number of VIP but the other f5 where i have almost 1000 VIPs it is asking me "are you sure you want to display 1000 records (y/n)" My question is if i say will it impact any application or slow down the application during the processing of such large number of VIPs? Also is there a way to filter VIPs where connection mirroring enabled? as this command show both enable and disabled connection mirroring on VIPs.
      2.  

       

    • Dario_Garrido's avatar
      Dario_Garrido
      Icon for MVP rankMVP
      Oct 16, 2020

      Hello Macaron.

      You need to perform bash engineering. Some examples:

      tmsh list ltm virtual mirror | grep -B1 enabled
tmsh list ltm virtual mirror | grep -B1 enabled | grep ltm | awk '{print $3}'
tmsh list ltm virtual one-line all-properties | grep "mirror enabled" | awk '{print $3}'
tmsh -q -c "cd / ; list ltm recursive one-line all-properties" | grep "mirror enabled" | awk '{print $3}'
# This last one to capture VS located in different partitions.

      Regarding the 1000 records, you should not have any problem, but it's better to execute it when CPU/RAM consumption in management plane is low.

      Regards,

      Dario.