CSS 11503 - Keepalive

Question

Hi
At present we have various servers which use a basic keepalive of tcp port 8002. What we have discovered recently is if the servers experience other problems (for example i-cap errors).
Is there any way the CSS can identify these errors and then take the service down and not use the server until the issue i resolved?
Thanks
James

Answer 1

Gilles:
I know this is a two years old, but need some help with the issue regarding this post. I need to have a script keepalive to verify the content of a page. I tried what you mentioned here, but my service won't come up. My set up is this:
SERVICE
service serbancasawebback
type ssl-accel-backend
add ssl-proxy-list bhdssl
keepalive type script ap-kal-httptagban
protocol tcp
port 80
ip address 192.168.249.23
active
The script I used is as follows:
!no echo
! Filename: ap-kal-httptagban
! Parameters: HostName WebPage HostTag
! Description:
! This script will connect to the remote host and do an HTTP
! GET method upon the web page that the user has asked for.
! This script also adds a host tag to the GET request.
! Failure Upon:
! 1. Not establishing a connection with the host.
! 2. Not receiving an HTTP status “200 OK”
if ${ARGS}[#] “NEQ” “3”
echo “Usage: ap-kal-httptagban \'192.168.249.23 /bancasa/start.swe?SWECmd=Logoff www2.bhd.com.do\'”
exit script 1
endbranch
! Defines:
set HostName “${ARGS}[1]”
set WebPage “${ARGS}[2]”
set HostTag “${ARGS}[3]”
! Connect to the remote Host
set EXIT_MSG “Connection Failure”
socket connect host ${HostName} port 80 tcp
! Send the GET request for the web page
set EXIT_MSG “Send: Failed”
socket send ${SOCKET} “GET ${WebPage} HTTP/1.0\nHost: ${HostTag}\n\n”
! Wait for a good status code
set EXIT_MSG “Waitfor: Failed”
socket waitfor ${SOCKET} “SWE Internal Error” 2000
no set EXIT_MSG
socket disconnect ${SOCKET}
exit script 0
Notice this is an SSL back-end service. The web page the user should request is:
https://www2.bhd.com.do/bancasa/start.swe?SWECmd=Logoff
If it returs the page with the error, then is down.
I'm not sure I have all arguments OK or in the correct format. Also,I'm a little confused regarding whta the Hostag should be.
Can you please verify what I have wrong ?
Thanks