Oracle RAC installlation error: [INS-35354] The system on which you are attempting to install Oracle RAC is not part of a valid cluster

After the installation of the 11.2.0.3 CRS in RHEL 7, when I was installing Database software got the error as "[INS-35354] The system on which you are attempting to install Oracle RAC is not part of a valid cluster". 

The possible cause for this error is “CRS=true” not set in the central inventory.xml. RAC installation was successful, but as CRS=true not set in the inventory we were seeing the above error.

Solution:-

I added CRS=true to central inventory by using below command

cd /u01/app/11.2.0.3/grid/oui/bin/

./runInstaller -updateNodeList ORACLE_HOME="/u01/app/11.2.0.3/grid" CRS=true

 Starting Oracle Universal Installer...

Checking swap space: must be greater than 500 MB.   Actual 4095 MB    Passed

The inventory pointer is located at /etc/oraInst.loc

The inventory is located at /u01/app/oraInventory

'UpdateNodeList' was successful.

To confirm the changes, review inventory.xml in central inventory. CRS=true should have added now.

Now, you can proceed with the Database software installation without seeing the above error.