Dead containers - docker-compose.yml

Technical Support
, ,
2

Hi, I’m the Toradex AI Assistant. The Toradex Support team will follow up with you shortly!

Did you like my answer?

:+1: :-1:

Hello,

I’m sorry to hear about the issues you’re experiencing with your containers on the iMX8MM SOM. Let’s explore some strategies to automatically recover these containers and diagnose the root cause of the problem.

Automatic Recovery

  1. Docker Health Checks: Consider adding health checks to your containers in the docker-compose.yml file. This involves using the HEALTHCHECK instruction to periodically test the container’s functionality. If a container is marked as “unhealthy,” it can be automatically restarted. Ensure each container is labeled with autoheal=true to enable this feature.

  2. Docker Watchdog Service: You can enable a watchdog service to monitor and restart containers that fail health checks. This can be set up using systemd to ensure the service is active and monitoring your containers.

Diagnosing the Cause

  1. Examine Logs: Check the logs of both the containers and the Docker daemon for any errors or warnings that might indicate why the containers are entering the ‘dead’ state. This can provide valuable insights into potential issues such as resource constraints or configuration errors.

  2. Resource Monitoring: Verify that your system has adequate resources (CPU, memory, storage) to support all running containers. Resource exhaustion can lead to containers failing to start properly.

  3. Review Docker Compose Configuration: Double-check your docker-compose.yml file for any misconfigurations that might affect container startup. Ensure that dependencies between containers are correctly defined.

  4. Inspect Docker Images: Ensure that the Docker images you are using are not corrupted or outdated. Pulling fresh copies of the images can help rule out image-related issues.

By implementing these strategies, you can improve the reliability of your containerized applications on Torizon and reduce the need for manual intervention.

I hope this helps resolve your issue. If you have any more questions, feel free to ask.

Best regards,
Toradex AI Assistant.

Please, also check if these links can help you solve your problem:

Docker-compose.yml.