Changing Hostname in an OCI Compute Instance (Oracle Linux)

Steps to Change Hostname

1. Modify the OCI Hostname Configuration File
   Edit the /etc/oci-hostname.conf file and set PRESERVE_HOSTINFO to 2. This ensures that the hostname change persists across reboots.

   sudo nano /etc/oci-hostname.conf
   

   Update the file with the following line:

   PRESERVE_HOSTINFO=2
   

   Save and exit the file.

2. Update the Hostname
   Use the hostnamectl command to set the new hostname:

   sudo hostnamectl set-hostname lmlab
   

After completing these steps, the hostname of the OCI compute instance will be updated and persist across reboots.