HA Link and Path Monitoring

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Re: HA Link and Path Monitoring

1. pre-emption does not take any monitors into account. It is designed to assume a network outage is either a very temporary issue (fail back upon timer) or a very lengthy issue (fail permanently and wait for admin)

 

2. if the outage has taken longer than the (hold time x pre-emption attempts), the cluster will settle with the secondary being active until an admin takes action. to manually fail it back, you shourd first ascertain the primary's root issue is solved and then shortly suspend the secondary

 

3. the default preempt hold time is 1 minute [1-60], but is configurable if you access the advanced timer settings

'Flaps Max' indicates how many times preempt is allowed to 'try' before permanently failing, and is 3 by default [0-16]

preempt hold time.png


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Re: HA Link and Path Monitoring

MAny Thanks for replying back in detail.

Lot to learn from here

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