Offline (Enabled) - The children pool member(s) are down

[doodle_guy_2193]

Hi Friends,

I am novice to F5 and following CBT Nuggets to understand LTM in a better way. I have completed basic configuration i.e defined Nodes, defined Pool and assigned Pool Members to my Pool.

Now the problem is that I have enabled "http" health monitor and right after I click 'finished' the icon Transitions from 'Blue Square' to 'Rectangle Red' - Offline(Enabled) - The children pool member(s) are down when I hover over the Pool in 'Pool List'.

Now this is a very basic setup with 3 .OVA web servers pre configured which I received in my Nuggetlabs.

I am able to login to the servers using my browser, telnet 10.2.0.11 80 and curl http://10.2.0.11 commands but the Servers are showing as Offline(Enabled) - Pool member has been marked down by a monitor in 'Members' list.

I need your help to proceed further please.

Thanks in advance,

Sagar

[doodle_guy_2193 · Accepted solution]

Hi,

I got it! I had to create a custom monitor with 'GET /\r\n\r\n' as send string as my version of VE is 11.3.

Pool members came up straight away!!

Regards Sagar

[Dalmaren_261881]

Hi Sagar, Thanks very much. You saved the day. The pool came up straight away for me too. Did you manage to connect to the virtual server as well? I have the pool up, all servers up, the virtual server is up as well.The routing is all good. I just can't connect to the virtual server from an external interface. Is the modification to the HTTP GET is affecting this. HELP please. Thanks,

[Dalmaren_261881]

I have got an answer from Yann Dasmarest. I had to activate SNAT on the virtual server Please see the question I posted in case you come across the same issue. (Virtual server and http pool not accessible)

[prashanth2]

Hi Sagar,

As I am facing the same problem, 

Availability

Offline (Enabled) - Pool member has been marked down by a monitor

Health Monitors

http_8586

In monitor --> send string --GET /\r\n updated same. But still same problem 

[Rajasekher_2903]

Hi Sagar,

The Custom health Monitor worked for me.

Thanks a Ton mate !

Regards, RajaSekher

[tmanoptions_294]

This work thanks posting this solution.

[Shreeshakm_2541]

That works perfectly.. Thanks mate 🙂

[Madhu3003_30542]

Am new to F5 ,Can u explain How to create custom Health Monitor.Please help i struck at that point .

[Vijay_E]

See this link.

[Nazar123_343532]

Hi all ,i have same issue VIP and pool member down .from F5 pool IP i can ping but telnet port 80 no response .i try curl no response .pls help me