Containerd is an industry-standard core container runtime that is widely used in the container ecosystem. It is responsible for managing the complete container lifecycle of its host system: image transfer and storage, container execution and supervision, and low-level storage and network attachments. Containerd is designed to be embedded into a larger system, such as Docker or Kubernetes, providing a robust and efficient way to manage containers.
When working with containerd, you might encounter the error message: "containerd: network not found". This error typically occurs when the network configuration required for container operations is missing or incorrectly specified. This can prevent containers from starting or communicating with each other or external networks.
The error "network not found" indicates that containerd is unable to locate the specified network. This can happen if the network configuration is not set up correctly or if the network has been deleted or is otherwise unavailable. Containerd relies on network plugins to manage container networking, and any misconfiguration can lead to this error.
To resolve the "network not found" error in containerd, follow these steps:
First, ensure that the network configuration is correct. Check the network name specified in your container configuration files. You can list available networks using the following command:
docker network ls
Ensure that the network you are trying to use is listed.
Ensure that the network plugin required by containerd is installed and configured correctly. For example, if you are using CNI (Container Network Interface), verify that the CNI configuration files are present in the expected directory, usually /etc/cni/net.d/.
If the network is missing, you may need to recreate it. Use the following command to create a new network:
docker network create <network_name>
Replace <network_name> with the desired network name.
After making changes to the network configuration, restart the containerd service to apply the changes:
sudo systemctl restart containerd
For more information on containerd and network configurations, consider visiting the following resources:
By following these steps, you should be able to resolve the "network not found" error and ensure that your containerd setup is functioning correctly.
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