ROOT.SH fails with “Invalid interface. There are more than one interface, but there is no private interface specified” in RAC

While running root.sh in a RAC environment, its execution might fail with the error message “Invalid interface. There are more than one interface, but there is no private interface specified”. This normally happens when the previous CRS was deconfigured and a new clusterware is being configured.

[oracle@10gnode1 install]$ more root_10gnode1.mydomain_2014-11-14_19-54-35.log

Performing root user operation for Oracle 11g

The following environment variables are set as:
ORACLE_OWNER= oracle
ORACLE_HOME= /u01/app/11.2.0/grid3
Entries will be added to the /etc/oratab file as needed by
Database Configuration Assistant when a database is created
Finished running generic part of root script.
Now product-specific root actions will be performed.
Using configuration parameter file: /u01/app/11.2.0/grid3/crs/install/crsconfig_params
User ignored Prerequisites during installation
Invalid interface. There are more than one interface,
but there is no private interface specified
/u01/app/11.2.0/grid3/perl/bin/perl -I/u01/app/11.2.0/grid3/perl/lib -I/u01/app/11.2.0/grid3/crs/install /u01/app/11.2.0/grid3/crs/install/rootcrs.pl execution failed
[oracle@10gnode1 install]$

Upon checking the CRSCONFIG_PARAMS file, there were no values specified for the NODEVIPS and the NETWORKS parameters.

Fill in appropriate values as per your environment for the CRS_NODEVIPS (VIP subnet mask details of the nodes of the cluster) and the NETWORKS (Public and Private IP Subnet mask details)

[oracle@10gnode1 ~]$ vi /u01/app/11.2.0/grid3/crs/install/crsconfig_params
CRS_NODEVIPS='10gnode1-vip/255.255.255.0/eth0,10gnode2-vip/255.255.255.0/eth0'
NETWORKS="eth0"/192.168.2.0:public,"eth1"/192.168.0.0:cluster_interconnect

CRSCONFIG_PARAMS file can be found at the location GRID_HOME/crs/install

[oracle@10gnode1 ~]$ vi /u01/app/11.2.0/grid3/crs/install/crsconfig_params CRS_NODEVIPS='10gnode1-vip/255.255.255.0/eth0,10gnode2-vip/255.255.255.0/eth0'
NETWORKS="eth0"/192.168.2.0:public,"eth1"/192.168.0.0:cluster_interconnect

Once the file is filled in with the appropriate values, re-run the root.sh script and that would fix the problem.

Here we go !!

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