What are the rollback strategies in Docker Swarm?

What are the rollback strategies in Docker Swarm?

In Docker Swarm, rollback strategies allow you to revert to a previous service version if a deployment fails. The main strategies include automatic rollback, manual rollback, and using the docker service update command with the --rollback flag.

Can you explain how to perform a manual rollback?

To perform a manual rollback in Docker Swarm, you can use the command docker service update --rollback <service_name>. This will revert the service to its last stable version.

What happens during an automatic rollback?

During an automatic rollback, if a service update fails, Docker Swarm automatically reverts the service to its previous stable state without manual intervention.

Are there any best practices for implementing rollback strategies?

Yes, best practices include testing updates in a staging environment, monitoring service health, and having a clear rollback plan documented.