1. 修改主機名稱和添加hosts
#永久修改主機名
hostnamectl set-hostname master && bash #在master01上操作，阿里云服務器
hostnamectl set-hostname worker1 && bash #在node01上操作，阿里騰訊云服務器
hostnamectl set-hostname worker2 && bash #在node02上操作，華為云服務器
cat >> /etc/hosts << EOF
202.168.216.25 master
198.201.73.25 worker1
49.58.173.125 worker2
EOF
2.系統優化
#時間同步：
yum install epel-release -y
yum install ntpdate -y
ntpdate time.windows.com
#修改內核參數
cat > /etc/sysctl.d/k8s.conf <<EOF
net.bridge.bridge-nf-call-ip6tables = 1
net.bridge.bridge-nf-call-iptables = 1
net.ipv4.ip_forward = 1
EOFcat >> /etc/sysctl.d/k8s.conf << EOF
net.bridge.bridge-nf-call-ip6tables = 1
net.bridge.bridge-nf-call-iptables = 1
EOFmodprobe br_netfilter #加載br_netfilter模塊
lsmod |grep br_netfilter #驗證模塊是否加載成功
sysctl -p /etc/sysctl.d/k8s.conf #使剛才修改的內核參數生效
systemctl stop firewalld # 關閉
systemctl disable firewalld # 禁止開機啟動防火墻
sed -i 's/enforcing/disabled/' /etc/selinux/config # 永久
setenforce 0 # 臨時
yum install -y yum-utils device-mapper-persistent-data lvm2 wget curlwget https://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo -O /etc/yum.repos.d/docker-ce.repoyum-config-manager \--add-repo \https://download.docker.com/linux/centos/docker-ce.repo#yum list docker-ce --showduplicates | sort -r #查看yum倉庫中可以安裝的docker版本
#yum -y install docker-ce-18.06.1.ce-3.el7 #安裝指定的版本
yum -y install docker-ce docker-ce-cli containerd.io #安裝最新docker
systemctl enable docker
systemctl start docker
docker --versioncat > /etc/docker/daemon.json << EOF
{"registry-mirrors": ["https://qj799ren.mirror.aliyuncs.com","https://4c99aa72f1a643edb02b13b93fec6a17.mirror.swr.myhuaweicloud.com"],"insecure-registries": ["0.0.0.0/0"],"exec-opts": ["native.cgroupdriver=systemd"],"log-driver": "json-file","log-opts": {"max-size": "100m"},"storage-driver": "overlay2"
}
EOF
systemctl restart docker
systemctl status docker
3.rancher安裝
#在master01上操作，阿里云服務器上安裝rancher
docker run -d --name rancher_server --restart=unless-stopped --privileged -p 8080:80 -p 8443:443 -v /rancher/rancher:/var/lib/rancher rancher/rancher:v2.4.17
瀏覽器訪問 https://202.168.216.25:8443
4. 參考博客第5步以后繼續操作
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