一、Installing Docker

yum install -y dockersystemctl enable docker && systemctl start docker

二、Installing kubeadm, kubelet and kubectl

cat <
     
       /etc/yum.repos.d/kubernetes.repo[kubernetes]name=Kubernetesbaseurl=https://packages.cloud.google.com/yum/repos/kubernetes-el7-x86_64enabled=1gpgcheck=1repo_gpgcheck=1gpgkey=https://packages.cloud.google.com/yum/doc/yum-key.gpg https://packages.cloud.google.com/yum/doc/rpm-package-key.gpgEOFsetenforce 0yum install -y kubelet kubeadm kubectlsystemctl enable kubelet && systemctl start kubelet
     

   1.关闭selinux

   2.Some users on RHEL/CentOS 7 have reported issues with traffic being routed incorrectly due to iptables being bypassed. You should ensure net.bridge.bridge-nf-call-iptables is set to 1 in your sysctl config, e.g.

cat <
     
        /etc/sysctl.d/k8s.confnet.bridge.bridge-nf-call-ip6tables = 1net.bridge.bridge-nf-call-iptables = 1EOFsysctl --system
     

参考 https://kubernetes.io/docs/setup/independent/install-kubeadm/