3 Replies Latest reply on May 22, 2012 6:19 AM by Navneet -Oracle

    Managed server IP's for Exalogic servers


      We have created cluster of managed server on exalogic machine. While configuring it we used public IP's of all nodes on all managed server's listen address and in cluster address.

      Not sure if this is correct approach, do we need to mention private IP's of exalogic node anywhere; since infiniband would be from private IP's... if we need to mention where should it be used? If not how will it use infiniband?

        • 1. Re: Managed server IP's for Exalogic servers
          René van Wijk
          Maybe it helps: http://docs.oracle.com/cd/E18476_01/doc.220/e18479/net.htm#CIHGAJBJ shows the steps for General Network and InfiniBand Setup.

          And documentation how to enable Exalogic-Specific enhancements in WebLogic - http://docs.oracle.com/cd/E18476_01/doc.220/e18479/optimization.htm#BABGCJFH
          • 2. Re: Managed server IP's for Exalogic servers
            Hi Thanks for the reply..

            sorry bit late but, I just saw the exalogic machine assigned to us only have private and public ip's configured by exalogic admin's...

            What are floating IP's? I just read a doc, but didn't understood what exactly we need to put as listen address for managed server's? and on what ip can we hit request's?

            Can u please explain in short...

            Thanks a lot...
            • 3. Re: Managed server IP's for Exalogic servers
              Navneet -Oracle

              Load balancing websites can be acheived by putting 2 entries in your DNS, for instance:


              then DNS will do a round Robin between them, but should either host fail then your will see intermittant loss when surfing, as the DNS will still point to either IP in turn.

              If you want failover, for instance:

              host1.example.com (master)
              host2.example.com (slave)

              and the floating ip as you call it


              Then you would need scripts that run as often as you can on slave, to see if master is still there (sometimes referred to as a heartbeat).

              if the Master drops, then it needs run a script to bring the floating ip up on the slave to resume service.

              A google search for heartbeat, failover should yield some howtos on the subject.

              Hope that helps.

              The above explanation is derived from here: http://www.webhostingtalk.com/showthread.php?t=671377