Forum Discussion
Plumtree_72679
Nimbostratus
NimbostratusSending User-Agent headers properly in health monitor
Folks,
An application (Oracle WebCenter Interaction 10.3.0) throws warnings in the logs (filling them up) each time it is hit by an F5 health monitor. This is because the app is trying to read the headers to find the User-Agent.
The existing health monitor works fine, but triggers the app warning:
monitor portal_http {
defaults from http
dest *:7001
recv "Test Passed"
send "GET //portal/server.pt?PT_HEALTH\r\n"
}
but if I change the send line to:
send "GET //portal/server.pt?PT_HEALTH HTTP/1.1\r\nUser-Agent: Mozilla/5.0 (Windows NT 5.1; rv:2.0.1) Gecko/20100101 Firefox/4.0.1\r\n"
...the members drop from the pool. I don't even see the health check being received by the app.
I tried doubling the \r\n; e.g. \r\n\r\n because I read something about different F5 versions.
The User-Agent string is exactly that which is now sent by my browser to the app, and the app likes it fine.
What am I doing wrong?
Thanks!
Robert Wagner
nitassEmployee
have you ever tried to add host header? it is required in http 1.1.
sol2167: Constructing HTTP requests for use with the HTTP or HTTPS application health monitor
http://support.f5.com/kb/en-us/solu...l2167.html
hwidjaja_37598Altostratus
Can you try this:
send "GET /portal/server.pt?PT_HEALTH HTTP/1.1\r\nUser-Agent: User-agent: Mozilla/5.0 (Windows NT 5.1; rv:2.0.1) Gecko/20100101 Firefox/4.0.1\r\n"
hooleylistCirrostratus
Or with two CRLF's at the end of the HTTP 1.0 request (which does not require the host header):
send "GET /portal/server.pt?PT_HEALTH HTTP/1.0\r\nUser-Agent: User-agent: Mozilla/5.0 (Windows NT 5.1; rv:2.0.1) Gecko/20100101 Firefox/4.0.1\r\n\r\n"
Aaron- Plumtree_72679Thanks folks! The solution was, as nitass said, to add a null host header:
monitor portal_http-test {
defaults from http
dest *:7001
recv "Test Passed"
send "GET //portal/server.pt?PT_HEALTH HTTP/1.1\r\nHost:\r\nUser-Agent: Mozilla/5.0 (Windows NT 5.1; rv:2.0.1) Gecko/20100101 Firefox/4.0.1\r\n"
}