Reconfiguring a failed Grid Infrastructure configuration

If you would like to resume a failed configuration attempt, you first need to
deconfigure the failed configuration and then proceed again with the configuration
using the following actions.
Firstly, identify the failures caused during the root.sh script execution referring
to the installation logs. For example, use the crsconfig log file under the $GRID_
HOME/cfgtoollogs directory. Then, as root user, proceed with the following
deconfiguration step:
./$GRID_HOME/install/rootcrs.pl –verbose –deconfig –force --(except on the last node)
Once you run the script successfully on the first node of the cluster, proceed with
subsequent nodes, repeating the same command.
However, when you reach the last node of the cluster, you need to run the following
(slightly modified) command:
./$GRID_HOME/install/rootcrs.pl –verbose –deconfig –force –lastnode
--(just on the last node only)
Assuming that the problems that occurred during the root.sh execution time have
been addressed properly and the failed configuration has been removed successfully
on the node, using the preceding procedure, you need to rerun the root.sh script as
root user to reconfigure the Grid Infrastructure installation again.
./$GRID_HOME/root.sh
Once the root.sh script has successfully completed on the first node, then proceed
with the other nodes and repeat the same command, one node at a time.