Using an F5 Load Balancer to Monitor the Health Servlet
Article ID: 44785
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Products
Issue/Introduction
When using a F5 load balancer with CA Service Desk Manager, is it possible to get an error page when the application service is down (i.e. 400) or to get OK page (200) when the application service is up?
Environment
CA Service Desk Manager 17.x
F5 Load Balancer Device
Resolution
To use the F5 Load Balancer device to monitor the CA Service Desk Manager Health Servlet, you would need to create "Monitors" on the F5 device. These monitors will monitor a certain server, however by default, when you create these monitors on the F5 device, they will monitor port "80" which may not be the correct port CA Service Desk Manager is using.
However, you can set the value on the Alias Service Port field on the monitor to the port that you are using for CA Service Desk Manager.
For example, if you are using port 8180 as your Tomcat port for CA Service Desk Manager, you would set up a monitor on the F5 Load Balancer as follows:
Virtual: SDMvs (ip:80, SDMpool, ...) Pool: SDMpool (member1:80, member2:80, SDMmonitor, ...) Monitor: SDMmonitor Type: HTTP Send String: GET /HealthServlet/GetHealth\r\n Receive String: AA-Server-Status: All OK! Receive Disable String: Quiesce time remaining Alias Service Port: 8180
IMPORTANT NOTE: If the monitor is already created on the F5 device, you will have to delete it and create a new one as you cannot change the Alias Service Port once created, but rather can only set that port at creation.
Please work with the F5 Administrator to setup the appropriate monitors as this is outside the scope of Broadcom Support.
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