FAO: WLS IMR experts, Primary Server Choosing

Question

Now then chaps,
          System Sun Solaris/ WLS 5.1 SP6
          no weighting, imr, jdk 122,
          proxy weblogic.HttpClusterServlet
          Cluster, & Proxy run on the same machine (different IPs though) this is
          just for testing purposes and a chance to get a hang of the admin.
          Ok, lets get to the meat
          Im have two WLS running in a cluster using IMR and accessing some custom
          JSPS that I am using for storing sessions
          and testing IMR. Oh and Im using weblogics HttpClusterProxy servlet
          I was testing fail over when and when I took down the server1, the
          second server naturally took up the slack and retrieved the session info
          and loaded the JSP, so far so good.
          However when I restarted the server1 it immediately became the primary
          server and began once again to take requests.
          is this right?
          I was of the understanding that the 'last server standing' automatically
          became the primary server and retained this status until it was taken
          down.( If this is so , what is going wrong with my config?)
          Or does weblogic reassign the primary server arbitrarily whenever a new
          server joins the cluster.
          Greg
          Programmer Analyst
          

Answer 1

Greg wrote:
          > Now then chaps,
          >
          > System Sun Solaris/ WLS 5.1 SP6
          > no weighting, imr, jdk 122,
          > proxy weblogic.HttpClusterServlet
          > Cluster, & Proxy run on the same machine (different IPs though) this is
          > just for testing purposes and a chance to get a hang of the admin.
          >
          > Ok, lets get to the meat
          >
          > Im have two WLS running in a cluster using IMR and accessing some custom
          > JSPS that I am using for storing sessions
          > and testing IMR. Oh and Im using weblogics HttpClusterProxy servlet
          > I was testing fail over when and when I took down the server1, the
          > second server naturally took up the slack and retrieved the session info
          > and loaded the JSP, so far so good.
          > However when I restarted the server1 it immediately became the primary
          > server and began once again to take requests.
          Only new requests should be accepted by server 1. You previous request
          should still go to server 2.
          > is this right?
          > I was of the understanding that the 'last server standing' automatically
          > became the primary server and retained this status until it was taken
          > down.( If this is so , what is going wrong with my config?)
          Well, when primary fails, secondary takes over as primary and creates a
          new secondary if a server is available.
          > Or does weblogic reassign the primary server arbitrarily whenever a new
          > server joins the cluster.
          The proxy will start using the new server in the cluster for
          loadbalancing new requests.
          - Prasad
          >
          > Greg
          > Programmer Analyst
          Cheers
          - Prasad