What are the ways for Oracle Rac to add nodes?
This article introduces how to add nodes to Oracle Rac. The content is very detailed. Interested friends can use it for reference. I hope it will be helpful to you.
There are two ways to add nodes:
1. Clone an existing grid home directory.
Clone Grid: you can execute clone.pl scripts manually or you can Oracle Enterprise Manager.
two。 Use the addNode.sh script.
Prerequisites:
1. Configure public and private networks
two。 Configure the operating system
3. Configure shared storage (the new node does not create ASM disks, only scans.)
Cluster information:
Rac1 、 Rac2 、 Rac3
Examples: orarac1, orarac2, orarac3
Add cluster rac4, instance orarac4
Pre-installation inspection
1. Cluster verification
. / runcluvfy.sh stage-pre crsinst-n rac1,rac2,rac3,rac4-r 11gR2
. / runcluvfy.sh stage-pos hwos-n rac4
Or:
. / cluvfy stage-pos hwos-n rac4
Comparative configuration
$/ cluvfy comp peer-refnode rac1-n rac4-orainv oinstall-osdba asmdba-r 11gR2
Pre-add test
$cluvfy stage-pre nodeadd-n rac4
two。 Execute addNode.sh script
Distribute the grid infrastrunchture binaries on the existing cluster nodes to the nodes to be added to the cluster.
$addNode.sh-silent "CLUSTER_NEW_NODES= {rac4}"CLUSTER_NEW_VIRTUAL_HOSTNAME= {rac4-vip}"
If you configure GNS, you do not need to provide a new node virtual hostname, and GNS automatically assigns the hostname and IP.
3. Install Oracle softwar
The existing node executes, and the shell script addNode.sh in the $ORACLE_HOME/oui/bin directory calls OUI to copy the software to the new node.
Log in to Oracle on any node, set environment variables, and silently call:
$. / addNode.sh-silent "CLUSTER_NEW_NODES= {rac4}"
Finally, execute the root.sh script.
4. Create an instance
Run on the first node to create an instance in the new node
Log in to rac4 as Oracle
$ORACLE_HOME/bin/dbca
...
Select add Instance,Next
...
Enter the orarac4 instance name and select rac4 as the node name.
During creation, ask if you want to extend the ASM instance to rac4, and select Yes.
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