系统：centos7
kubernetes:15.1
docker:19.08
系统设置
将内核升级为4.0版本以上
写入系统基本配置
cat > /etc/sysconfig/modules/ipvs.modules <#!/bin/bash
modprobe -- ip_vs
modprobe -- ip_vs_rr
modprobe -- ip_vs_wrr
modprobe -- ip_vs_sh
modprobe -- nf_conntrack_ipv4
EOF
配置防火墙
chmod 755 /etc/sysconfig/modules/ipvs.modules && bash /etc/sysconfig/modules/ipvs.modules && lsmod | grep -e ip_vs -e nf_conntrack_ipv4
安装必要软件包
yum install -y yum-utils device-mapper-persistent-data lvm2
安装docker
yum-config-manager --add-repo http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo
yum install -y docker-ce
mkdir /etc/docker
cat > /etc/docker/daemon.json <{
"registry-mirrors": ["https://t7bsi8ah.mirror.aliyuncs.com"],
"exec-opts":["native.cgroupdriver=systemd"],
"log-driver": "json-file",
"log-opts":{
"max-size": "100m"
}
}
EOF

设置开机自启动
systemctl daemon-reload && systemctl restart docker && systemctl enable docker
kubernetes安装
cat > /etc/yum.repos.d/kubernetes.repo <[kubernetes]
name=Kubernetes
baseurl=https://mirrors.aliyun.com/kubernetes/yum/repos/kubernetes-el7-x86_64/
enabled=1
gpgcheck=1
repo_gpgcheck=1
gpgkey=https://mirrors.aliyun.com/kubernetes/yum/doc/yum-key.gpg https://mirrors.aliyun.com/kubernetes/yum/doc/rpm-package-key.gpg
EOF

setenforce 0

yum -y install kubeadm-1.15.1 kubectl-1.15.1 kubelet-1.15.1

systemctl enable kubelet && systemctl start kubelet