Introduction:
In this knowledge-sharing article, we will explore an issue that can arise after upgrading the Sourcegraph deployment on Docker or Docker-Compose. Specifically, we will focus on the challenges faced with the Grafana container, which encounters problems while creating mounts.
Issue Description:
After upgrading, you might notice error messages when inspecting the Docker logs for the Grafana container. These error messages indicate permission-related issues with the mounts. The specific errors are as follows:
GF_PATHS_CONFIG='/sg_config_grafana/grafana.ini' is not readable.
GF_PATHS_DATA='/var/lib/grafana' is not writable.
GF_PATHS_HOME='/usr/share/grafana' is not readable.
You may have issues with file permissions, more information here: http://docs.grafana.org/installation/docker/#migrate-to-v51-or-later
runtime/cgo: pthread_create failed: Operation not permitted
SIGABRT: abort
The above error indicates that the Grafana container is unable to access the mounted volumes due to permission issues.
Here's a step-by-step troubleshooting guide to address these issues:
- Ensure the mounted volumes exist on the host and have the correct permissions. The
/var/lib/grafanadirectory should be writable by the Grafana user inside the container.
- Double-check that the volume mounts are correct in your docker run command or docker-compose file. The paths should match what's expected by the Grafana image.
- Review the Logs, leading up to the abort error for any other clues.
- Most Importantly, Ensure that you are using the recommended Docker and Docker-Compose versions. The minimum recommended versions are Docker v20.10.0 and Docker-Compose v1.29.0. Refer to the sourcegraph documentation for version compatibility and upgrade accordingly.
Conclusion:
By following these step-by-step troubleshooting measures, you can effectively resolve mounting and runtime issues encountered by the Grafana container after upgrading Sourcegraph on Docker or Docker-Compose. Ensuring the correct permissions, verifying volume mounts, examining logs, and using the appropriate Docker versions are crucial steps in restoring the smooth functionality of the Grafana container.