TKGi deployment via Management console fails with error validating Ops Manager Dns: error permission denied

Products

• VMware Tanzu Kubernetes Grid Integrated Edition

Issue/Introduction

Attempting to deploy TKGi in Management console fails with message - 

error validating Ops Manager Dns: Command error output: ubuntu@<ops manager> permission denied (publickey)

Resolution

Management Console deploys Ops Manager during deployment. This error may happen if the SSH key changed on Ops Manager since initial deploy happened.

In order to workaround, perform the steps - 

1. Locate the Ops Manager SSH key at:
   
   Management Console > Deployment Metadata > Ops Manager VM SSH Private Key
   
   
2. Generate a new ssh key:
   
   ssh-keygen -y -f <Ops Manager VM SSH Private> > <public key file>
   
   
3. Edit the authorized_keys file on OpsManager to include public key:
   
   $ sudo vim ~/ssh/authorized_keys
   
   <paste contents of public key file from step 2>
   
   
4.  Validate that SSH works with private key:
   
   ssh -i <Ops Manager VM SSH Private> ubuntu@END-POINT

Afterwards you can re-run the deployment of TKGi via Management Console and it should now succeed.