Application Health Check Monitoring - Possible?

F5 monitors each request and any connect error, read timeout means that server is to be blacklistedis inband monitor usable?

 

 

inband

 

http://support.f5.com/kb/en-us/products/big-ip_ltm/manuals/product/ltm_configuration_guide_10_0_0/ltm_appendixa_monitor_types.html

 

 

but I am not sure about the post request..post request is configurable.

 

 

sol1033: Configuring an HTTP application health monitor to send a POST request

 

http://support.f5.com/kb/en-us/solutions/public/1000/000/sol1033.html

Thanks Nitass.. good stuf as always...

I think Inband will perfectly do, I just need to write the custom active monitor and use it with this passive monitor correct?

Now for the custom monitor, the POST I have is in this format ( like XML)

6/6/20136/7/2013396866880505 "

DO i need to convert it to regex? writing this in regex to apear similar to the following is the challenge..

To send an HTTP version 1.1 request, configure the Send string to appear similar to the following example:

POST /MyApp.cgi HTTP/1.1\r\nHost: host.domain.com\r\nConnection: Close\r\n\r\nD1=asdf&D2=jklm

thanks,

Now for the custom monitor, the POST I have is in this format ( like XML) it is POST data, isn't it?

e.g. this is only send string. please make sure you configure receive string and verify if it works as expected.

root@(ve11a)(cfg-sync Changes Pending)(Active)(/Common)(tmos) list ltm monitor http mypost
ltm monitor http mypost {
    defaults-from http
    destination *:*
    interval 5
    send "POST /uritest/testGetAvail.html HTTP/1.1\\r\\nHost: \\r\\nConnection: Close\\r\\n\\r\\n6/6/20136/7/2013396866880505"
    time-until-up 0
    timeout 16
}

[root@ve11a:Active:Changes Pending] config  ssldump -Aed -nni 0.0 port 80
New TCP connection 1: 200.200.200.11(55746) <-> 200.200.200.101(80)
1371702151.4318 (0.0026)  C>S
---------------------------------------------------------------
POST /uritest/testGetAvail.html HTTP/1.1
Host:
Connection: Close

6/6/20136/7/2013396866880505---------------------------------------------------------------

I have several JBOSS platform based application servers configured in a pool that are continuosly logging the error below causing memory leak issues.

 

BrowserVersionWarningService.defineBrowserUsed(BrowserVersionWarningService.java:389

 

The vendor suggested the following health monitor which was applied as follows with no resolution:

 

TCP/80

 

Send String

 

POST /wfc/XmlService HTTP/1.1\r\nContent-type: text/xml\r\nHost: servername\r\nContent-Length: 129\r\n\r\n \r\n\

 

Response String

 

Success

 

i) On the pool replacing servername with the F5 VIP FQDN. ii) Individually per pool member where servername coincided with the server FQDN.

 

The servers are marked online in both cases, but the java logs are still being continuously generated.

 

Please help!