201 · Question #26
You have a pool of servers that need to be tested. All of the servers but one should be tested every 10 seconds, but one is slower and should only be tested every 20 seconds. How do you proceed.
The correct answer is D. It can be done by assigning one monitor to the pool and a different monitor to the slower pool member.. To monitor pool members at different frequencies, assign a monitor to the entire pool and then a specific overriding monitor with a different frequency to the individual pool member that needs unique testing.
Question
You have a pool of servers that need to be tested. All of the servers but one should be tested every 10 seconds, but one is slower and should only be tested every 20 seconds. How do you proceed.
Options
- AIt cannot be done. All monitors test every five seconds.
- BIt can be done, but will require assigning monitors to each pool member.
- CIt cannot be done. All of the members of a pool must be tested at the same frequency.
- DIt can be done by assigning one monitor to the pool and a different monitor to the slower pool member.
How the community answered
(43 responses)- A19% (8)
- B5% (2)
- C7% (3)
- D70% (30)
Why each option
To monitor pool members at different frequencies, assign a monitor to the entire pool and then a specific overriding monitor with a different frequency to the individual pool member that needs unique testing.
Monitoring intervals are fully configurable and not fixed at five seconds, allowing administrators to define custom testing frequencies.
While technically possible to assign monitors to each pool member, the most efficient approach for a single exception is to use a pool-level monitor with an override on the specific member.
This is incorrect; monitoring frequency can be customized per pool member, overriding the general settings applied at the pool level.
In traffic management systems, you can assign a default monitor to a pool, which applies to all members, and then assign a different, overriding monitor directly to a specific pool member to achieve custom monitoring frequencies for that member.
Concept tested: Overriding pool-level monitors with member-specific monitors
Source: https://techdocs.f5.com/en-us/big-ip-ltm-16-1-0/big-ip-local-traffic-manager-concepts/about-health-monitors.html
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