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ZAHIDHASEEB's avatar
ZAHIDHASEEB
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Nov 26, 2019

Does F5 load balancer intelligent in case of ports are down

Does F5 load balancer intelligent in case of ports are down? Suppose, if there are 2 servers behind F5 load balancer and in case application got down(who is listening on port 80) on one server so ho...
  • Heinrichm5's avatar
    Heinrichm5
    Nov 27, 2019

    It depends on where you've added your health monitor and how you've configured it

    Typical scenario: you want the other ports to remain active after a single port has stopped responding

    You need to have configured several pools, each with their own port, eg

    PoolA:

    name: http_pool

    members: 10.10.10.10:80, 10.10.10.12:80

    monitor: tcp_half_open (no port denfined in the monitor settings)

     

    PoolB

    name: https_pool

    members: 10.10.10.10:443, 10.10.10.12:443

    monitor: tcp_half_open (no port denfined in the monitor settings)

     

    If 443 stops responding 80 will still work. Same if it is the other way around.

     

    The monitor can be configured in the GUI

    Selecting a monitor: Local Traffic > Pool > Select your pool > find the monitor in the right window and move it to the left

    Creating a custom monitor: Local Traffic > Monitor > Create