1. System Requirements Kubernetes, >= 1.16.0-0 Helm, >= 3.0 Linux kernel >= 4.9.17 For the process of upgrading the kernel on CentOS 7, see How to Switch the Data Plane to eBPF Under Calico. 2. Uninstalling Calico Delete the cluster resources 1 2 3 4 5 6 kubectl -n kube-system delete ds calico-node kubectl -n kube-system delete deploy calico-kube-controllers kubectl -n kube-system delete sa calico-node kubectl -n kube-system delete sa calico-kube-controllers kubectl -n kube-system delete cm calico-config kubectl -n kube-system delete secret calico-config 1 kubectl get crd | grep calico | awk '{print $1}' | xargs kubectl delete crd Bring down the Tunl0 interface 1 ifconfig tunl0 down Remove the Calico configuration files 1 rm -rf /etc/cni/net.