Solution Explore Cni

• How to inspect the kubelet service and identify the container runtime endpoint value set for kubernetes:
• Run this command:

  ps -aux | grep kubelet | grep --color container-runtime-endpoint
  

• In this case, the answer would be:

  unix:///var/run/containerd/containerd.sock
  

• How to find the path configured with all binaries of the CNI supported plugins:

  /opt/cni/bin
  

• How to identify plugins that are not available on the host:

  ls -l /opt/cni/bin
  

• How to check the CNI plugin that is used on a cluster:

  ls /etc/cni/net.d/
  

• An example output would be:

  10-flannel.pluginconflist
  

• How to check the binary executable file that runs by a kubelet after its container and associated namespaces are created?
• Check the type field of the previously identified plugin:

  /etc/cni/net.d/10-flannel.conflist
  

• In this case, the answer is flannel.