07-19-2012 01:11 PM
Hello team.
I proudly have my sticky web server farm up and running after many rounds of questions in this forum :o)
I currently am probing its servers by ckecking TCP 80 only, but each server has more than one web service, so from time to time the programmer needs to move a particular web service for maintenance purposes, while at the same time the remaining web services would still be working.
So I am planning to build more specific probes, one per web service or destination URL. Since this will be my first time building one such probe, I am looking for advice.
The following image is a wireshark snapshot of the request to the VIP and its service http://10.150.3.30/iwsupport
And the next image is the answer from the ACE on behalf of one server:
Based on this information, I think that the following probe should be enough:
probe http IWSUPPORT
interval 20
passdetect interval 5
request method get url /iwsupport
expect status 200 200
¿Is the previous probe OK for my purpose?
I would appreciate your hints/advice if possible.
Best regards
Rogelio Alvez
Argentina
07-19-2012 02:44 PM
Hello Rogelio,
Yes, it looks fine but we may want to test it and see if it give us any error then based on that we can apply any change which may be required
Jorge
07-19-2012 04:41 PM
Hi Jorge, it´s nice to meet you again.
I think i will build a new "test farm" with this probe in it, and make a policy call it to see how it behaves.
I will let you know what happened. It is good to know that it should work OK.
TIA, Rogelio
PS: sorry for the very basic questions. I am a poor R&S engineer trying to survive in this arena
07-19-2012 05:20 PM
Hola Rogelio,
Aquí tienes otro link que te puede servir:
Básicamente, el request method get url / hace un llamado a ese url que tienes configurado y lo que debería responder es con un código de http: 200, lo que significa que fue éxitosa la solicitud de parte del "probe"
Solo como dato adicional, también se podría configurar puertos en el probe, dado el caso que tu aplicación escuche en otro puerto diferente a 80.
Por otra parte, es bueno antes de probar el "probe", revisar la conectividad desde el ACE a los servidores por ejemplo: # ping
Espero, te ayude y marcalo si consideras que la información brindada ha sido beneficiosa para que otras la tomen como referencia
Saludos, ahí nos cuentas como te fue
Jorge
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