Calico Calico CNI plugin not found.

What is Calico Calico CNI plugin not found.

Understanding Calico

Calico is a networking and network security solution for containers, virtual machines, and native host-based workloads. It is widely used in Kubernetes environments to provide networking and network policy enforcement. Calico uses a pure IP networking fabric to deliver high-performance, scalable, and secure networking.

Identifying the Symptom

When deploying Calico in a Kubernetes environment, you might encounter an error indicating that the Calico CNI plugin is not found. This can manifest as network connectivity issues between pods or errors in the Kubernetes logs.

Exploring the Issue: CALICO-1009

The error code CALICO-1009 signifies that the Calico CNI plugin is missing from the expected directory on the node. This can occur if the plugin was not installed correctly or if there was an issue during the deployment process.

Common Causes

The CNI plugin binaries are not present in the /opt/cni/bin directory. Incorrect configuration of the CNI plugin path in the Kubernetes configuration files. Network policies or security settings preventing the plugin from being accessed.

Steps to Resolve the Issue

Step 1: Verify CNI Plugin Installation

Ensure that the Calico CNI plugin binaries are present in the /opt/cni/bin directory on each node. You can check this by running:

ls /opt/cni/bin

If the binaries are missing, you need to reinstall the Calico CNI plugin.

Step 2: Reinstall the Calico CNI Plugin

To reinstall the Calico CNI plugin, follow the official installation guide provided by Project Calico. You can find the installation instructions here.

Step 3: Check Kubernetes Configuration

Ensure that the Kubernetes configuration files are correctly pointing to the CNI plugin directory. This is typically configured in the /etc/cni/net.d directory. Verify that the configuration files are correctly set up to use Calico.

Step 4: Review Network Policies

Check if there are any network policies or security settings that might be blocking access to the CNI plugin. Ensure that the necessary permissions are in place for the plugin to operate correctly.

Conclusion

By following these steps, you should be able to resolve the CALICO-1009 error and ensure that the Calico CNI plugin is correctly installed and functioning. For further assistance, refer to the Calico documentation or seek help from the community forums.