What is the restart policy in Docker Compose?

What is the restart policy in Docker Compose?

The restart policy in Docker Compose defines how a container should be restarted when it exits. You can set it to 'no', 'always', 'unless-stopped', or 'on-failure'.

Can you explain the different types of restart policies?

Sure! 'no' means the container won't restart, 'always' restarts it regardless of exit status, 'unless-stopped' restarts unless manually stopped, and 'on-failure' restarts only if the container exits with a non-zero status.

How do I set a restart policy in my docker-compose.yml file?

You can set it under the service definition like this:

services:
  my_service:
    image: my_image
    restart: always

What happens if I don't set a restart policy?

If you don't set a restart policy, the default behavior is 'no', meaning the container will not restart automatically after it stops.