Sorry, Kubernetes 1.19.2 requires conntrack to be installed in root's path

root@root:/usr/local/bin$  minikube start --vm-driver=none --image-repository=gcr.azk8s.cn/google- containers
* minikube v1.14.2 on Centos 7.8.2003
* Using the none driver based on user configuration

X Exiting due to GUEST_MISSING_CONNTRACK: Sorry, Kubernetes 1.19.2 requires conntrack to be installed in root's path

解决办法:
yum install -y conntrack

systemctl enable docker.service
systemctl enable kubelet.service
echo "1" > /proc/sys/net/bridge/bridge-nf-call-iptables
关闭swap分区
swapoff <swap文件 swapon -s>
https://kubernetes.io/docs/setup/cri/

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