Finished a RAC-course a while ago with instructor Harald van Breederode. Noticed that he used a script for setting up ssh on the nodes. Short, powerful. Used it myself with user grid and oracle while installing 11g RAC.
First of all, one file should exist on forehand: $HOME:nodeinfo. Should look like this, one noder per line:
rac1 rac2
Then the file ssh_setup.sh:
if [ `whoami` != “grid” ] then echo “You must execute this as user grid!!!”;exit fi LOCAL=`hostname -s` REMOTE=`sed -n 2p $HOME/nodeinfo` ssh $REMOTE rm -rf /home/grid/.ssh rm -rf /home/grid/.ssh ssh-keygen -t rsa -f $HOME/.ssh/id_rsa -N ” -q touch $HOME/.ssh/authorized_keys chmod 600 $HOME/.ssh/authorized_keys cat $HOME/.ssh/id_rsa.pub >> $HOME/.ssh/authorized_keys chmod 400 $HOME/.ssh/authorized_keys ssh -o StrictHostKeyChecking=no -q $LOCAL /bin/true scp -o StrictHostKeyChecking=no -q -r $HOME/.ssh $REMOTE: # and now add the host keys for the FQDN hostnames ssh -o StrictHostKeyChecking=no -q ${LOCAL} /bin/true ssh -o StrictHostKeyChecking=no -q ${REMOTE} /bin/true ssh -o StrictHostKeyChecking=no -q ${LOCAL}.jobacle.nl /bin/true ssh -o StrictHostKeyChecking=no -q ${REMOTE}.jobacle.nl /bin/true scp -q $HOME/.ssh/known_hosts $REMOTE:$HOME/.ssh/known_hosts
The file above has been used for the user ‘grid’, for installing a infrastructure. Slightly modify this for user oracle while installing a database.
Thanks Harald!