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rajesh1's avatar
rajesh1
Icon for Nimbostratus rankNimbostratus
Nov 25, 2011

Issues when Server communicating to itself via load balancer

Hello All,

 

 

I am facing a strange problem with SOA application and need your assistance for further troubleshooting.

 

 

Configuration

 

 

VIP A - Configured to Load balance two SOA services(SOA1 & SOA2) with SNAT Enabled.

 

 

When a client access VIPA through the load balancer it works as expected and no issues has been identified.

 

 

When SOA1 or SOA2 is communicating VIP A and the servers are responding with HTTP status 500 for few URI's and working some URI's.

 

 

Any thoughts/suggestions on this issue ?

 

 

Thanks,

 

Raj

 

 

 

config
design

4 Replies

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  • nitass's avatar
    nitass
    Icon for Employee rankEmployee
    Nov 26, 2011
    When SOA1 or SOA2 is communicating VIP A and the servers are responding with HTTP status 500 for few URI's and working some URI's.what does the communicating to vip a mean? does soa1/soa2 act as a client and access vip a? is there any different between soa1/soa2 and client when accessing e.g. same url?
  • rajesh1's avatar
    rajesh1
    Icon for Nimbostratus rankNimbostratus
    Nov 28, 2011
    Hi Nitass,

     

     

    The VIP A is the virtual servers load balancing soa1 & soa2.

     

     

    Client(Any Source except soa1 & soa2) can target the vip A and successfully load balance the traffic between soa1 & soa2 .

     

     

    It is the same URL/URI is being accessed by the client and soa hosts .

     

     

    Thanks

     

    Raj
  • nitass's avatar
    nitass
    Icon for Employee rankEmployee
    Nov 28, 2011
    can you try to capture packet and see what is going on?
  • Hamish's avatar
    Hamish
    Icon for Cirrocumulus rankCirrocumulus
    Nov 28, 2011
    Well, HTTP/500 is server generated... So at the tcp layer the connection is fine.

     

     

    What do your server logs say? The answer will be in there somewhere.

     

     

    H