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EastCoast_16835's avatar
EastCoast_16835
Icon for Nimbostratus rankNimbostratus
Sep 11, 2015

HTTP monitor missing

Quick question ...

 

While creating new nodes, I am trying to specify a node-specific monitor. For some reason, the default Common/http monitor is not shown in the option list. Only Common/icmp and Common/https are available. I tried to create a custom http monitor but it is still not shown as an option for node monitors.

 

However, when creating a new pool, the Common/http monitor is available for selection.

 

What is causing this behaviour?

 

application delivery
http
LTM
monitor

1 Reply

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  • Patrik_Jonsson's avatar
    Patrik_Jonsson
    Icon for MVP rankMVP
    Sep 11, 2015

    Short answer: You're monitoring an IP, not a service.

    Longer answer quoting the support article:

    About health monitor association
Using Local Traffic Manager, you can monitor the health or performance of your nodes by associating monitors with those nodes. This is similar to associating a monitor with a load balancing pool, except that in the case of nodes, you are monitoring the IP address, whereas with pools, you are monitoring the services that are active on the pool members.

Local Traffic Manager (LTM) contains many different pre-configured monitors that you can associate with nodes, depending on the type of traffic you want to monitor. You can also create your own custom monitors and associate them with nodes. The only pre-configured monitors that are not available for associating with nodes are monitors that are specifically designed to monitor pools or pool members rather than nodes.

    Link: https://support.f5.com/kb/en-us/products/big-ip_ltm/manuals/product/ltm-concepts-11-4-0/4.html

    /Patrik