Health Check Failing

I guess a good option here is to enable debugging of monitor (file will be generated in /var/log/monitors/). This can be done in the pool member GUI screen. You will see there exactly the SEND + RECEIVE data

Alex

I cannot see the debug fuction in the pool member via the gui. Can this be enabled via the cli?

First, this might be a good resource to help in general Constructing HTTP requests for use with the HTTP or HTTPS application health monitor

In your example is the Host correct? This should be the domain i.e. www.example.com (or an IP address of course). in fact for a monitor I'm sure it can be anything.

Id also construct the monitor in Fiddler or curl on the BIG-IP and direct it to a pool member to show the response.

If you're capturing a tcpdump you may want to add -s0 so you capture the full data too.

Hope this helps,

N

if we try http://10.55.185.58/Connect/v1/checkservicestatus from EI it works. Just the health monitor string is not connecting correctly I am guessing the string is incorrect.

Something like this?

GET /Connect/v1/checkservicestatus HTTP/1.1\r\nHost: 10.55.185.58\r\nConnection: Close\r\n\r\n

I'm assuming that "Response 200" means the monitor receive string = 200 correct? Try a receive string other than the status code. I believe the receive string must be text or a regular expression.

Echo Alex's suggestion of debugging. Your Host header doesn't look correct - should just be the host (and port if not default for the protocol) instead of the host and path. May or may not cause problems depending on your server. HTTP 1.1 requires the header though a null value is okay - depends on what the server expects though. See this link at w3.org for more info on the Host header.

Actually, if that string in your Host header is the path, it should be included as part of the GET portion of the field. What is the full URL you are using in a browser to access this object directly?

You may find some valuable info in SOL2167.

Best of luck! -Ed

Thanks we have the string sorted now :-). Just need to work out how to assicaite this string to specific nodes in the pool. There are two servers so we want minitored in one pool

GET /Connect/v1/checkservicestatus HTTP/1.1\r\nHost: 10.55.185.58\r\nConnection: Close\r\n\r\n

run against server 10.55.185.58 only

and

GET /Connect/v1/checkservicestatus HTTP/1.1\r\nHost: 10.55.185.59\r\nConnection: Close\r\n\r\n

run against server 10.55.185.59 only

Many thanks for all your help so far:-)