Last week, I wrote about How to restart a single container with Docker Compose. The approach is manual, hence will be repetitive and error-prone. And since we want to automate almost everything as a DevOps engineer, today I’ll show you a better way of handling unhealthy containers.
Prerequisites
- Docker
- Docker Compose
A few days ago, I found this popular Docker image with around 107 millions docker pulls, so I thought to myself, this must be it. Lightweight, simple, straight-to-the-point solution.
From the CLI
docker run -d \
--name autoheal \
--restart=always \
-e AUTOHEAL_CONTAINER_LABEL=all \
-v /var/run/docker.sock:/var/run/docker.sock \
willfarrell/autoheal
Docker Compose
version: "3.7"
services:
autoheal:
restart: on-failure
image: willfarrell/autoheal
volumes:
- /var/run/docker.sock:/var/run/docker.sock
environment:
- "AUTOHEAL_CONTAINER_LABEL=all"
...
Conclusion
Give it a spin and let me know what you think. You could even add a Slack or MS Teams integration, by passing a webhook URL to the WEBHOOK_URL environment variable. Official GitHub repo: https://github.com/willfarrell/docker-autoheal
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