Response=503 Service Unavailable.

k_sinjish · ‎03-15-2012

Hi All ,

We are experiencing the below given error message in the servers which are kept before the cisco ACE .

“ ………………….,Backend Response=503 Service Unavailable,Backend processing time=17,Processing time=21 “

Any stcky configuration has not been enabled on the server farm where we kept the Rserver . Also we can see the live connection on the

Rserver through the loadbalancer.

But the probe configuration is as a below.

probe http TCP35812_HTTP

port 35812

interval 5

faildetect 2

passdetect interval 2

request method get url /esales/is_available

expect status 200 200

connection term forced.

The server team confirmed as there is no issue at their end and it is working fine if they access without the loadbalancer ( VIP).

Please suggest me what is the “ request method get url /esales/is_available “ . Also suggest me is it related to loadbalancer or server related issue .

Regards,

Sinjish.K

sivaksiv · ‎03-15-2012

Hi,

Have only one server in the serverfarm and see if it fixes your problem. If the problem still persist with one server, then most likely this is not a loadbalancer issue.

-

Siva

k_sinjish · ‎03-15-2012

Hi ,

It is not possible ..it got five Rservers in the server farm...

Can anyone brief me what is role of below configuraion in probe.

request method get url /esales/is_available

Regards,

Sinjish.K

sivaksiv · ‎03-15-2012

Hi,

Try'n have a look at this, I think you will find it useful.

http://www.cisco.com/en/US/docs/interfaces_modules/services_modules/ace/vA2_3_0/configuration/slb/guide/probe.html#wpxref46342

But in short, when applying e.g an http-probe to your serverfarm, you can specify a request method (GET og HEAD) to request specific content from the rserver using http. Combined with either http response-code check or regex, this provides for more detailed availibility information on the specific rserver.

-

Siva

Surya ARBY · ‎03-15-2012

You probably have to forge a whole HTTP header for your probe (Host field)

k_sinjish · ‎03-16-2012

Hi Surya/Siva,

Thanks for the response .

Could you please elaborate me how this request method “request method get url /esales/is_available “ in the above probe can be replaced with the “forge a whole HTTP header for your probe “ ( The suggested method )

Regards,

Sinjish.K

Surya ARBY · ‎03-16-2012

http://www.cisco.com/en/US/docs/app_ntwk_services/data_center_app_services/ace_appliances/vA3_1_0/configuration/slb/guide/probe.html#wp1031455