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Christopher_Ba1's avatar
Christopher_Ba1
Icon for Nimbostratus rankNimbostratus
Dec 29, 2016

Restore APM from UCS

I'm currently working on migrating my old BigIP 3600s running LTM and APM on version 12.1.1.HF2 to new vCMPs running BigIP 12.1.1.HF2 with LTM and APM.

I created UCS on the old BigIP and copied to the new BigIP and then issued:


tmsh load sys ucs oldbigip.ucs no-license no-platform-check

I wasnt expecting it to work perfectly the first time, I was expecting to have to tweak some parts of the UCS for it to restore to the new BigIP but I wasnt expecting the error message I received:


ERROR: Module apm is invalid for platform-migrate mode. Only LTM and GTM are supported.

So it seems the system wont even try to restore any APM config from the UCS because its from a different platform.

Recreating the configuration from scratch on the new BigIP isnt practical. Not only would it take me forever, it would also introduce the risk of typos and mis-configurations.

Anyone come across a work-around for this, or does anyone have any ideas?

APM
application delivery
BIG-IP

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  • JG's avatar
    JG
    Icon for Cumulonimbus rankCumulonimbus
    Dec 30, 2016

    Does the following apply to you:

    vCMP memory provisioning calculations

The amount of memory provisioned to a vCMP guest is calculated using the following formula: (platform_memory- 3 GB) x (cpus_assigned_to_guest/ total_cpus).

As an example, for the B2100 with two guests, provisioned memory calculates as: (16-3) x (2/4) ~= 6.5 GB.
For certain platforms, the vCMP host can allocate a single core to a vCMP guest. However, because a single-core guest has relatively small amounts of CPU resources and allocated memory, F5 supports only the following products or product combinations for a single-core guest:

    BIG-IP LTM standalone only
    BIG-IP GTM standalone only
    BIG-IP LTM and GTM combination only

    ?

    (From 12.1.1 release notes.)