相对于二进制要生成各种证书来说， kubeadm就简单的多了
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| yum install -y yum-utils device-mapper-persistent-data lvm2
yum-config-manager --add-repo \
http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo
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| yum install -y docker-ce-19.03.15-3.el7 docker-ce-cli-19.03.15-3.el7 containerd.io
sed -i "s#^ExecStart=/usr/bin/dockerd.*#ExecStart=/usr/bin/dockerd \
-H fd:// --containerd=/run/containerd/containerd.sock \
--exec-opt native.cgroupdriver=systemd#g" /usr/lib/systemd/system/docker.service
systemctl enable docker && systemctl start docker
cat /etc/sysctl.conf
echo "net.ipv4.ip_forward = 1" >> /etc/sysctl.conf
echo "net.bridge.bridge-nf-call-ip6tables = 1" >> /etc/sysctl.conf
echo "net.bridge.bridge-nf-call-iptables = 1" >> /etc/sysctl.conf
sysctl -p
cat <<EOF > /etc/yum.repos.d/kubernetes.repo
[kubernetes]
name=Kubernetes
baseurl=http://mirrors.aliyun.com/kubernetes/yum/repos/kubernetes-el7-x86_64
enabled=1
gpgcheck=0
repo_gpgcheck=0
gpgkey=http://mirrors.aliyun.com/kubernetes/yum/doc/yum-key.gpg
http://mirrors.aliyun.com/kubernetes/yum/doc/rpm-package-key.gpg
EOF
yum install -y kubelet-1.22.15 kubeadm-1.22.15 kubectl-1.22.15
systemctl enable kubelet && systemctl start kubelet
kubeadm init --pod-network-cidr 10.244.0.0/16 --kubernetes-version 1.22.15
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