Installing CRS (Oracle Clustwerware)

1. Configure the SSH
To configure SSH you need to perform the following steps on each node in the cluster.
$ cd
$HOME
$ mkdir .ssh
$ chmod 700 .ssh
$ cd .ssh$ /usr/bin/ssh-keygen -t rsa
Now accept the default location for the key fileEnter and confirm a passphrase. (you can also press enter twice).

$ /usr/bin/ssh-keygen -t dsa

Now accept the default location for the key fileEnter and confirm a passphrase. (you can also press enter twice).

$ cat *.pub > authorized_keys. (nodeX could be the nodename to differentiate files later)

Now do the same steps on the other nodes in the cluster.When all those steps are done on the other nodes, start to copy the authorized_keys. to all the nodes into $HOME/.ssh/
For example if you have 4 nodes you will have after the copy in the .ssh 4 files with the name authorized_keys.
Then on EACH node continue the configuration of SSH by doing the following:

$ cd $HOME/.ssh$ cat *.node* > authorized_keys
$ ssh node1 cat /home/oracle/.ssh/id_rsa.pub >> authorized_keys
oracle@node1’s password:
$ ssh node1 cat /home/oracle/.ssh/id_dsa.pub >> authorized_keys
To test that everything is working correct now execute the commands
$ ssh date

2. Source the following commands in the session you are going to start the OUI,
$ exec /usr/bin/ssh-agent $SHELL$ /usr/bin/ssh-add

3. After resintallation proceed the new install in the path /CRS/app/crs

4. The Oracle Cluster Registry value is /dev/raw/raw3

5. The Voting Disk is /dev/raw/raw1

6. Edit /etc/init.d/init.crs to make the following changes,
chown oracle:dba /dev/raw/raw1
chown root:dba /dev/raw/raw3
chmod 644 /dev/raw/*

7. Check the crsctl status using,
$ ps -ef grep CRS
$ $CRS_HOME/bin/crsctl check crs

8. Private connect - 192.168.xx.xx

9. Public Connect - 10.80.xx.xx