how to change ssh user to access to the controllers/workers

Issue

  • Is it possible to change ssh user to access to the controllers/workers?
  • Is it possible to change ec2-user/ubuntu to some other account, Which config item do we need to change?
  • When CJE is being installed, the installer uses ec2-user/ubuntu, Can this be changed?

Environment

Resolution

In order to have an user different than default ( ec2-user/ubuntu), you need to customize the AMI to have your new user on workers restart/create. This user has to have sudo permissions without a password

In a not initialised cluster (at cluster-init operation)

After making the cje prepare cluster-init operation, you have to edit the cluster-init.config file to set your ssh_user on each section of the file like this:

[controller]
...
ssh_user = USER_NAME
...
[worker]
...
ssh_user = USER_NAME
...
[storage]
...
ssh_user = USER_NAME
...

When you make the cje apply, the new user will be used to access by SSH

In a cluster initialised

In your .dna/project.config file, you have the ssh_user option configured for your Controllers/Workers you can change it for your user, it has to be in controllers/workers and has to have sudo permissions without a password and should have in ~/.ssh/authorized_keys the .dna/identities/default key.

ssh_user = USER_NAME

after you change it you have to make a cje upgrade --config-only --force to update the .dna/servers files.

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