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default https monitor vs custom https monitor on port 443.

Folks, would there be any difference when you use the F5 default https monitor vs a custom https monitor on port 443? We see that with the default https monitor the nodes moves status from up to down every 30 mins.

A custom https monitor on port 443 works fine.

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USER ACCEPTED ANSWER & F5 ACCEPTED ANSWER

Well that depends - how customised is you monitor? I'd also be more concerned why the monitor is marking the pool member down. Rather than finding a monitor that makes things look ok, I would want to know why the default monitor marks it down. If you monitors are making something up which in actual fact are down, you're going to be sending clients to potentially failed pool members.

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Comment made 4 months ago by Shann_P 353

The default HTTPS monitor really just asks if the server is responding and will take any response so if that is marking things down, then a customized HTTPS monitor would be marked down as well no?

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Comment made 4 months ago by N. 244

my bad....so we create a custom monitor on TCP port 443. with this the pool member is working fine

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Comment made 4 months ago by MrPlastic 1647

could you post the two monitors, the default HTTP monitor as configured on your system and your custom monitor. As mentioned before, I would be more concerned why the default is marking down and investigate any possible application issues before resorting to alternative monitors

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USER ACCEPTED ANSWER & F5 ACCEPTED ANSWER

The default monitor uses HTTP/0.9, which is not supported by most applications nowadays.

Please post the content of your custom monitor.

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Comments on this Answer
Comment made 4 months ago by N. 244

my bad....so we create a custom monitor on TCP port 443. with this the pool member is working fine

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USER ACCEPTED ANSWER & F5 ACCEPTED ANSWER

I agree with MrPlastic, since the issue intermittent then default monitor seems works for you. You need to find out why the monitor is failing. Run the packet capture against suspected pool member during issue time and see the packet flow.

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Comments on this Answer
Comment made 4 months ago by N. 244

my bad....so we create a custom monitor on TCP port 443. with this the pool member is working fine

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