使用kubeadm安装kubernetes集群

1. 准备工作

1.1 主机准备

1.2 环境准备

1.2.1 Master环境

hostnamectl set-hostname 'k8s-master'
exec bash
setenforce 0
sed -i --follow-symlinks 's/SELINUX=enforcing/SELINUX=disabled/g' /etc/sysconfig/selinux
systemctl stop firewalld && systemctl disable firewalld

1.2.2 安装并启动Docker

1.2.3 配置源

[kubernetes]
name=Kubernetes
baseurl=https://packages.cloud.google.com/yum/repos/kubernetes-el7-x86_64
enabled=1
gpgcheck=1
repo_gpgcheck=1
gpgkey=https://packages.cloud.google.com/yum/doc/yum-key.gpg https://packages.cloud.google.com/yum/doc/rpm-package-key.gpg

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 install -y kubelet kubeadm kubectl
systemctl enable kubelet && systemctl start kubelet

1.2.4 初始化

cat <<EOF >  /etc/sysctl.d/k8s.conf
net.bridge.bridge-nf-call-ip6tables = 1
net.bridge.bridge-nf-call-iptables = 1
EOF
sysctl --system

sysctl -w vm.swappiness=0

kubeadm init