Question 1

How do I set up Docker Autoheal with Docker Compose?

Accepted Answer

Add Autoheal as a service in your docker-compose.yml, specifying environment variables like AUTOHEAL_CONTAINER_LABEL and mounting the Docker socket. The README provides an example with network_mode set to none and volume mounts for /var/run/docker.sock.

Question 2

Docker Autoheal or Kubernetes liveness probes for container health?

Accepted Answer

Use Docker Autoheal for simple Docker-only setups where you need automatic restarts without orchestration. Kubernetes liveness probes are better for clustered environments with built-in health management, scaling, and more advanced recovery features.

Question 3

Can Docker Autoheal monitor containers on remote hosts via TCP?

Accepted Answer

Yes, it supports TCP sockets with optional mTLS for secure connections. Configure it using environment variables like DOCKER_SOCK and DOCKER_HOST, and mount certificates as described in the TCP with mTLS section of the README.

Question 4

How to configure webhook notifications in Docker Autoheal?

Accepted Answer

Set the WEBHOOK_URL environment variable to your webhook endpoint. When a container is restarted or a restart fails, Autoheal will POST a message to this URL, as mentioned in the environment defaults for alerting purposes.

Question 5

What are the security best practices for using Docker Autoheal?

Accepted Answer

Avoid exposing the Docker socket directly; instead, use TCP with mTLS for encrypted communications. The README outlines steps for setting up HTTPS with certificates like ca.pem and client-cert.pem to mitigate risks.

Question 6

How often does Docker Autoheal check container health by default?

Accepted Answer

It checks every 5 seconds by default, but you can customize this with the AUTOHEAL_INTERVAL environment variable. Other intervals like start periods and stop timeouts are also adjustable, as specified in the environment table.

Autoheal

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