Overview:

  • You can connect to the virtual machines in an Exadata Database Service on the Cloud @ Customer system by using a Secure Shell (SSH) Connection
  • An SSH private key file that corresponds to a public key that is registered in the system
  • When you create a VM cluster on your Exadata Database Service on the Cloud @ Customer system, you must specify the public key portion of one or more SSH key pairs
  • You can also register extra keys separately after you create the VM cluster
  • The public keys are stored in the authorized_keys file at ~/.ssh/authorized_keys. Separate authorized_keys files are located under the home directories of the operating system users
  • By default, only the opc user account has an authorized_keys entry and can log in remotely. Do not remove or alter the automatically generated entry in authorized_keys for the opc user

 

Steps to Add SSH Keys to ExaCC VM Cluster

1. Generate SSH key pairs.

  •     Connect to the SSH terminal and generate keys using the command “ssh-keygen -t rsa”

       The command will generate private and public keys.

  •     Copy key pairs files to your desktop

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2. Sign in to your OCI tenancy where your Exadata Database Service on Cloud @ Customer system is deployed

3. Navigate to “Oracle Database” > “Oracle Exadata Database Service on Cloud@Customer” > “Exadata VM Clusters“

4. Click on your VM Cluster Name

5. On the VM Cluster details page, click the “Add SSH Keys” button

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6. On the “Add SSH Keys” page, select “Upload SSH key files“, browse, and select the public key file generated in the first step, then click the “Save Changes” button.

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Note: Cluster status will be changed to “UPDATING” for around 10 minutes. The cluster will stay available (no downtime).

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7. Test SSH to VM Cluster. 

  •      Connect to SSH Terminal
  •      Run SSH Command “ssh -i <SSH private key file> opc@<ExaCC VM cluster node IP>“

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You are connected now to opc user on the Cluster Node!