Cluster has preemption enabled for F5

Vendor

F5

Description

Preemption is generally a bad idea in clustering, although sometimes it is the default setting. Indeni will alert if it's on.

Remediation Steps

It is generally best to have preemption disabled. Instead, once this device returns from a crash, you can conduct the failover manually.

How does this work?

This script uses the F5 iControl API to retrieve the traffic group configuration to determine if auto failback is enabled or not.

Why is this important?

This script uses the F5 iControl API to retrieve the traffic group configuration to determine if auto failback is enabled or not.

Without Indeni how would you find this?

An administrator would have to log in to his devices via the Web interface and verify that the auto failback option is not set. This could also be detected the hard way during an upgrade of a redundant pair if a recently upgraded node takes over prematurely.


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