//解决报错问题：[kubelet-check] The HTTP call equal to 'curl -sSL http://localhost:10255/healthz' failed with error: Get http://localhost:10255/healthz: dial tcp [::1]:10255: getsockopt: connection refused.
vi /etc/systemd/system/kubelet.service.d/10-kubeadm.conf
Environment="KUBELET_CGROUP_ARGS=--cgroup-driver=cgroupfs"
Environment="KUBELET_EXTRA_ARGS=--fail-swap-on=false"
//双机秘钥认证访问
ssh-keygen
ssh-copy-id -i ~/.ssh/id_rsa.pub root@172.16.3.14
ssh-copy-id -i ~/.ssh/id_rsa.pub test@192.168.3.2
ssh-copy-id -i ~/.ssh/id_rsa.pub "-p 20022 test@192.168.3.2"
cat ~/.ssh/id_rsa.pub | ssh user@IP "cat - >> ~/.ssh/authorized_keys"
//安装前筛选 特定版本的 Docker
yum list docker-ce --showduplicates | sort -r
yum list containerd.io --showduplicates | sort -r
yum list kubelet --showduplicates | sort -r
//完整移除特定版本 docker
yum remove docker-ce docker-ce-cli containerd.io
yum remove docker-selinux
配置各节点阿里K8S YUM源
cat <<EOF > /etc/yum.repos.d/kubernetes.repo
[kubernetes]
name=Kubernetes
baseurl=https://mirrors.aliyun.com/kubernetes/yum/repos/kubernetes-el7-x86_64
enabled=1
gpgcheck=0
EOF
yum -y install epel-release
yum clean all
yum makecache