Hi All,

 

I am running a Axis2 web service server application on SUSE 11.2 Linux.
I also have a web service client on a windows machine which connects to
the server application. My client submits job to the server by calling
the underlying API methods which are exposed over the web services.

 

My problem is everything works fine as long as I submit a single job at
a time as user "john". But when I increase the load on the server by
sending 40-50 submit job thread requests concurrently within 60 seconds
I get Jsch exception as follows in the web server's log file. Not all
but some of the job submissions are failing.

 

Error : 

 

          ERROR - Authentication failed:
com.altair.jaas.exceptions.JaasException: Authentication Failed:
com.jcraft.jsch.JSchException: Session.connect:    

     java.net.SocketException: Connection reset

 

     ERROR - -----------------------------------

     ERROR - Failed to login, user: john

     javax.security.auth.login.FailedLoginException: Authentication
failed: com.altair.jaas.exceptions.JaasException: Authentication Failed:


     com.jcraft.jsch.JSchException: Session.connect:
java.net.SocketException: Connection reset

        at
com.altair.jaas.module.JschLoginModule.login(JschLoginModule.java:100)

        at sun.reflect.GeneratedMethodAccessor41.invoke(Unknown Source)

        at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessor
Impl.java:

 

I have also checked the sshd log on the Linux machine & it shows the
below error messages when multiple requests are send simultaneously to
the server. The 1st set of messages are ssh error messages & the bottom
or 2nd set of messages are success messages when a single job submit
request is made over the web service call.

 

  Feb  2 17:50:03 blrm123 avahi-daemon[3146]: Received response with
invalid source port 39983 on interface 'eth0.0'

    Feb  2 17:51:42 blrm123 avahi-daemon[3146]: Received response with
invalid source port 39983 on interface 'eth0.0'

    Feb  2 17:52:33 blrm123 smartd[3538]: Device: /dev/sda [SAT], 3601
Currently unreadable (pending) sectors

    Feb  2 17:52:33 blrm123 smartd[3538]: Device: /dev/sda [SAT], 48
Offline uncorrectable sectors

 

    Feb  2 17:52:38 blrm123 sshd[20290]: Accepted
keyboard-interactive/pam for john from 127.0.0.1 port 39539 ssh2

    Feb  2 17:52:38 blrm123 sshd[20283]: Accepted
keyboard-interactive/pam for john from 127.0.0.1 port

 

 

A help from anyone to solve this issue will be just great. This will
help me in improving the scalability of my application.

 

Thanks

Ayaskant

Bangalore

India

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