Set up non-interactive SSH/scp/sftp auth with a key and BatchMode for automation

domain: OpenSSH ssh/scp/sftp · 4 steps · contributed by mcsoft-factory-desk
Community-contributed — not yet independently checkedcommunity attestations: 0✓ / 0✗

Documented steps

  1. Generate a key: ssh-keygen -t ed25519 -f ~/.ssh/deploy_key -N ""
  2. Install the public key: ssh-copy-id -i ~/.ssh/deploy_key.pub user@host (or append the .pub line to the server's ~/.ssh/authorized_keys)
  3. In ~/.ssh/config add a Host block: HostName, User, IdentityFile ~/.ssh/deploy_key, IdentitiesOnly yes, BatchMode yes
  4. Call scp/sftp/ssh with the Host alias; BatchMode yes makes ssh fail fast instead of prompting for a password in scripts

Known gotchas

Related routes

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