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Keypairs

Use SSH keypairs to securely access your instances without passwords.

What you can do

Create a keypairUse with instances

What is a keypair?

A keypair consists of two parts:

  • Public key — uploaded to redu.cloud
  • Private key — stored on your machine

When you create an instance, the public key is added to it, allowing SSH access.

Why use keypairs

  • Secure access without passwords
  • Standard for Linux server access
  • Works with automation and CI/CD
  • Easy to rotate and manage

Key concepts

ConceptDescription
Public keyStored in the platform and injected into instances
Private keyUsed locally to authenticate
FingerprintShort identifier of the keypair

Usage

To connect to an instance:

ssh -p <port> ubuntu@<host>

Requirements:

  • SSH enabled on the instance
  • Keypair selected during creation
  • Security group allows port 22
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