6.0 cluster startup without the admin server...

Question

Is it possible to start a WL6.0 cluster without the admin server being up
          and running? If not, are there any workarounds that eliminate the admin
          server as a single point of failure?
          

Answer 1

          I have same questions.
          1.The admin server's primary task is up the cluster?And if admin server is down
          that can't affect the cluster running.
          2.Is it right when the cluster is working,the useful ip is admin server's ip?For
          example,admin 10.10.10.1,cluster1 10.10.10.2,cluster2 10.10.10.3,the only useful
          ip is 10.10.10.1 in the cluster.
          3.Is it correct that because the only useful ip is 10.10.10.1,therefor my client
          access the cluster from 10.10.10.1?
          When my admin server is down,then my system will be down.
          4.which is the dispatch in the cluster system ?
          my step of configuration of th cluster:
          1.add two managed servers to admin server and edit startweblogic.cmd;
          2.config cluster.(admin server address 10.10.10.1:8168,cluster address 10.10.10.2:7001,10.10.10.3:7001),multicast(237.0.0.1)
          please help explain these questions!thanks a lot!
          2.
          Kumar Allamraju <[email protected]> wrote:
          >Sorry if i wasn't clear, what i mean to say is
          >
          >When you first start the managed server's you have to have admin server
          >up &
          >running.
          >Admin server can go down when cluster is running, but then you can't
          >add servers
          >to cluster
          >and I think its ok to have it that way from administration point of view.
          >
          >Yes, there's no facility to achieve single point of failure for admin
          >servers.
          >
          >--
          >Kumar
          >
          >
          >
          >William Wallace wrote:
          >
          >> I may be misreading that page, but it doesn't really tell me how to
          >> successfully start to start a managed server is the admin server is
          >down. If
          >> you run the managed server script you get an "cannot connect to admin
          >> server" exception if the admin server is not running. Now, I imagine
          >that I
          >> could script something up to restart the admin server if it's down,
          >but that
          >> doesn't protect me from hardware failure.
          >>
          >> "Kumar Allamraju" <[email protected]> wrote in message
          >> news:[email protected]...
          >> > http://e-docs.bea.com/wls/docs60/adminguide/startstop.html#1035064
          >> >
          >> > --
          >> > Kumar
          >> >
          >> >
          >> > William Wallace wrote:
          >> >
          >> > > Is it possible to start a WL6.0 cluster without the admin server
          >being
          >> up
          >> > > and running? If not, are there any workarounds that eliminate the
          >admin
          >> > > server as a single point of failure?
          >> >
          >