Linux: ssh equivalence and SELinux

This is quick post summarizing issues encountered while setting up ssh equivalence on EC2 instance. I was setting up  RHEL7 EC2 instances and followed below procedure to setup ssh equivalence Generate rsa key-pair using ssh-keygen -t rsa on both hosts Copy the public keys to the remote server in authorized_keys file Modify file permission to…

portmap: unrecognized service on RHEL6

Quick note for people using NFS for shared storage on RAC database. Till RHEL5 we had to ensure nfs,nfslock and portmap service has to be running. These services are required otherwise you will get following errors while mounting database ORA-00210: cannot open the specified control file ORA-00202: control file: '/u01/oradata/orcl/control01.ctl' ORA-27086: unable to lock file…