Issues creating cluster on WLS 6.0

Question

          I am new to weblogic domain , so plz bear if some questions are too obvious.
          Just a breif description of what i am trying to do:
          To start wiith I want to just cluster two servers that host a Stateless Session EJB
          and configure round-robin load-balancing .
          I also want to test that when one of the servers is unavailable the client request
          is still served by the other server in the cluster.
          I have 2 weblogic 6.0 running on m/cs xyz032 and xyz019 , both on port 7001
          I am jotting down the issues/insight that i have/need :
          1. I use the server on my m/c xyz032 (port 7001) as the admin server (mydomain>Servers>myserver).
          First question (Can a admin participate in the cluster ??)
          2. To make the server on m/c xyz019 as a part of the cluster , As far as i understand
          i have to create a server first from the admin server so that it shows up
          in the list of available servers. So that when you create a Cluster you can choose
          from the list of available servers. (FYI I am using the GUI Admin to configure this)
          But when i try to create a server , it only takes a name and port number. How do
          i create a new server that points to the server running on xyz019 (ip say xxx.x.xx.xxx).
          I also tried creating a new machine but that too does not take an ip address for
          the remote m/c.
          3. When i create a cluster from the admin GUI , it asks for a name(fine) and cluster
          address .
          I read the documentation that states it can be an ip address (not sure which ) .
          Do i need to give the comma separated ip addresses of both the servers taking part
          in the cluster ???
          4. Is it mandatory that servers to be clustered be running on the same port ?
          5. The document says that the object (EJB)to be clustered should be deployed to both
          the servers ( I agree, no doubt about it)
          But the deployment option on the GUI also lets me deploy to the cluster . Does that
          mean if i choose the deployment target to be cluster then the admin will deploy the
          bean to all the servers taking part in the cluster.
          I feel your experience with this will help me in a head start .
          Thanks
          Ashok Shamnani
          

Answer 1

          Thanks Kumar.
          Also like to add here ,
          when i start a managed server passing the arguments as the ip of the admin server
          , the managed server(the remote server) shows up in the admin server. Once it shows
          up then i can assign it to a cluster or do whatever deployments i want to.
          Kumar Allamraju <[email protected]> wrote:
          >
          >
          >Ashok Shamnani wrote:
          >
          >> I am new to weblogic domain , so plz bear if some questions are too obvious.
          >>
          >> Just a breif description of what i am trying to do:
          >>
          >> To start wiith I want to just cluster two servers that host a Stateless
          >Session EJB
          >> and configure round-robin load-balancing .
          >> I also want to test that when one of the servers is unavailable the client
          >request
          >> is still served by the other server in the cluster.
          >> I have 2 weblogic 6.0 running on m/cs xyz032 and xyz019 , both on port
          >7001
          >>
          >> I am jotting down the issues/insight that i have/need :
          >>
          >> 1. I use the server on my m/c xyz032 (port 7001) as the admin server (mydomain>Servers>myserver).
          >> First question (Can a admin participate in the cluster ??)
          >>
          >
          >Yes.
          >Just assign myserver to to mycluster from console (assuming mycluster is
          >your cluster name)
          >But i would recommend this. I would always use admin server for administrative
          >tasks.
          >
          >
          >>
          >> 2. To make the server on m/c xyz019 as a part of the cluster , As far
          >as i understand
          >> i have to create a server first from the admin server so that it shows
          >up
          >> in the list of available servers. So that when you create a Cluster you
          >can choose
          >> from the list of available servers. (FYI I am using the GUI Admin to configure
          >this)
          >> But when i try to create a server , it only takes a name and port number.
          >How do
          >> i create a new server that points to the server running on xyz019 (ip
          >say xxx.x.xx.xxx).
          >>
          >
          >You can specify the IP address under server-instance --> configuration-->General
          >tab, look for
          >Listen Address
          >
          >>
          >> I also tried creating a new machine but that too does not take an ip
          >address for
          >> the remote m/c.
          >>
          >> 3. When i create a cluster from the admin GUI , it asks for a name(fine)
          >and cluster
          >> address .
          >> I read the documentation that states it can be an ip address (not sure
          >which ) .
          >> Do i need to give the comma separated ip addresses of both the servers
          >taking part
          >> in the cluster ???
          >>
          >
          >You can simply ignore it, or use the cluster address given by your Admin.
          >e..g when i do ping cyclut, it resolves to a different IP every time.
          >
          >>
          >> 4. Is it mandatory that servers to be clustered be running on the same
          >port ?
          >>
          >
          >Yes.
          >
          >>
          >> 5. The document says that the object (EJB)to be clustered should be deployed
          >to both
          >> the servers ( I agree, no doubt about it)
          >> But the deployment option on the GUI also lets me deploy to the cluster
          >. Does that
          >> mean if i choose the deployment target to be cluster then the admin will
          >deploy the
          >> bean to all the servers taking part in the cluster.
          >>
          >
          >Yes.
          >Either you can deploy the bean in a cluster or per-server instance.
          >
          >--
          >Kumar
          >
          >
          >>
          >> I feel your experience with this will help me in a head start .
          >>
          >> Thanks
          >>
          >> Ashok Shamnani
          >