環境：centos7、三個主節點的kubernetes

1、關閉selinux、firewalld、swap
2、修改主機名稱 hostnamectl set-hostname master1
3、更新系統時間 timedatectl set-timezone Asia/Shanghai

4、上傳檔案（準備中。。。）
kube1.17.2.tar.gz
sealos

5、配置sealos工具
chmod +x sealos && mv sealos /usr/bin

6、配置hosts
cat <<EOF >>/etc/hosts
172.21.210.4 master1
172.21.210.5 master2

7、安裝k8s叢集
sealos init --master 172.21.210.4 \
--master 172.21.210.5 \
--master 172.21.210.6 \
--node 172.21.210.7 \
--user root \
--passwd server-passwd \ #替換為伺服器密碼
--version v1.17.2 \
--pkg-url /root/kube1.17.2.tar.gz

8、新增新節點

kubeadm token create --print-join-command   #獲取token
kubeadm join apiserver.cluster.local:6443 --token uqdcs4.svi229q32vvh098d     --discovery-token-ca-cert-hash sha256:460de3edc9bfdc49226249937ae0db4d51d731dffb8859d00a9fb0a396dfefa2 
scp -r kube root@172.19.163.142:/root/     #複製安裝包到新節點

cd kube
 
/shell && chmod u+x init.sh && ./init.sh   #新節點進行初始
sed -i "s/127.0.0.1/172.21.210.20/g" /etc/docker/daemon.json   #配置自己的harbor地址
systemctl restart docker
docker login 172.21.210.20   #登入harbor
admin

echo "10.103.97.2 apiserver.cluster.local" >> /etc/hosts   # using vip 這兒不變
kubeadm join 10.103.97.2:6443 --token uqdcs4.svi229q32vvh098d \ #token為上面獲取的token
    --master 172.21.210.4:6443 \
    --master 172.21.210.5:6443 \
    --master 172.21.210.6:6443 \
    --discovery-token-ca-cert-hash sha256:460de3edc9bfdc49226249937ae0db4d51d731dffb8859d00a9fb0a396dfefa2

9、進行驗證

[root@master1 ~]# kubectl get nodes
NAME                 STATUS   ROLES    AGE   VERSION
master1              Ready    master   30h   v1.17.2
master2              Ready    master   30h   v1.17.2
master3              Ready    master   30h   v1.17.2
node1                Ready    <none>   30h   v1.17.2