For more information regarding the security incident at F5, the actions we are taking to address it, and our ongoing efforts to protect our customers, click here.

Forum Discussion

ERLomboy_27803's avatar
ERLomboy_27803
Icon for Nimbostratus rankNimbostratus
Feb 13, 2014

Health check via URL

Hi,   Wanted to setup a load balancer which can check the health of a node based on the URL (not by pinging just host and port).   For example: The LB should check the following URLs and if t...
application delivery
availability
ihealth
LTM
Arie's avatar
Arie
Icon for Altostratus rankAltostratus
Feb 13, 2014
ltm monitor http /Common/ws-healthmonitor_HTTP1.1_200-OK_http {
    defaults-from /Common/http
    description "Custom monitor - requests resource from specific sub folder."
    destination *:*
    interval 5
    recv "HTTP/1.(0|1) 200 OK"
    send "HEAD /ws/healthmonitor HTTP/1.1\\r\\nHost:\\r\\n\\r\\n"
    time-until-up 0
    timeout 16
}

Note that I haven't specified the port as the pool already specifies it (I prefer to keep monitors as generic as possible).

To check for the string "PASS" I would create a second monitor. It's possible to use a single one, but it makes troubleshooting more difficult (e.g. if there's a 200 but not "PASS").