查看 k8s 证书
kubeadm alpha certs check-expiration
查看版本
yum list kubectl –showduplicates | sort -r
apt-cache madison kubeadm
下载组件
yum install -y kubectl-1.19.3-0 kubeadm-1.19.3-0 kubelet-1.19.3-0
apt install -y kubeadm=1.17.16-00 kubectl=1.17.16-00 kubelet=1.17.16-00
systemctl enable kubelet && systemctl start kubelet
rancher查看密码
docker logs ad3a8e3e5b2f 2>&1 | grep “Bootstrap Password:”
扩展/
lvextend -L +421G /dev/mapper/centos-root