Containerd is an industry-standard core container runtime that manages the complete container lifecycle of its host system: image transfer and storage, container execution and supervision, and low-level storage and network attachments. It is used by various container orchestration systems like Kubernetes to manage container execution.
When working with containerd, you might encounter the error message: containerd: container process not found. This indicates that the container process you are trying to manage does not exist or cannot be found by containerd.
Typically, this error is observed when attempting to interact with a container that is expected to be running. Commands like ctr tasks list or ctr tasks start might return this error.
The error containerd: container process not found usually occurs when the container process has exited unexpectedly or was never started. This can happen due to various reasons such as incorrect entrypoint or command, resource constraints, or underlying system issues.
To resolve the containerd: container process not found error, follow these steps:
Inspect the logs of the container to identify any errors or issues during startup. Use the following command to view logs:
ctr logs
Look for any error messages or stack traces that indicate why the container might have exited.
Ensure that the entrypoint and command specified for the container are correct. You can check the container's configuration using:
ctr containers info
Verify that the entrypoint and command are set as expected.
Ensure that the host system has sufficient resources to run the container. Check CPU and memory usage using system monitoring tools like top or htop.
If the container process was terminated, you might need to restart it. Use the following command to restart the container:
ctr tasks start
For more detailed information on containerd and troubleshooting, refer to the following resources:
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