How to log out from Docker Registry?

Logging Out from Docker Registry

Logging out of a Docker registry is a straightforward process that helps you securely manage your Docker credentials and prevent unauthorized access to your private Docker images.

Steps to Log Out from Docker Registry

1. Identify the Docker Registry: The first step is to identify the Docker registry you want to log out from. This could be the default Docker Hub registry or a private registry that you have been using.

2. Log Out from the Docker Registry: To log out from the Docker registry, you can use the docker logout command. This command will remove your Docker credentials from the local Docker client.

   docker logout

   This command will prompt you to confirm the registry you want to log out from. Once you confirm, the Docker client will remove the stored credentials for that registry.

3. Verify the Logout: After running the docker logout command, you can verify that you have successfully logged out by trying to push or pull an image from the registry. If the login credentials are no longer valid, you will see an error message indicating that you are not authenticated.

   docker pull example/my-image:latest

   If you see an error message like "denied: requested access to the resource is denied", it means you have successfully logged out from the registry.

Logging Out from Multiple Registries

If you have credentials stored for multiple Docker registries, you can log out from each one individually by specifying the registry URL. For example:

docker logout https://example.registry.com

This will log you out of the specified registry, while leaving your credentials for other registries intact.

Mermaid Diagram: Docker Registry Logout Workflow

The Mermaid diagram above illustrates the step-by-step process of logging out from a Docker registry. It starts with identifying the registry, then running the docker logout command, confirming the registry, removing the stored credentials, and finally verifying the logout by attempting to access the registry.

By following these steps, you can securely log out of your Docker registry and prevent unauthorized access to your private Docker images.