Enes Cakir b366308c3c Do not create the user if it already exists on the AWS instance ...

A significant portion of provisioning time is spent creating users in
our AWS runner image. We have moved the user creation process for the
`ubuntu` user, which is the default user in AWS EC2, and the
`runneradmin` user to the image generation process. This approach
eliminates the overhead of creating a user home directory every time we
start a new instance.

Squiggly HEREDOC "<<~" strips the leading whitespace. We can indent the
commands for better readability.

cloudinit does not apply most of the provided configuration if the user
already exists. Similarly, if the user directory already exists, we do
not create a home directory again and only set the SSH public keys.

Ref: https://cloudinit.readthedocs.io/en/latest/reference/examples.html

    Note: Most of these configuration options will not be honored if the user
          already exists. Following options are the exceptions and they are
          applicable on already-existing users:
          - 'plain_text_passwd', 'hashed_passwd', 'lock_passwd', 'sudo',
            'ssh_authorized_keys', 'ssh_redirect_user'.

2025-08-19 10:28:57 +03:00

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