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Kubernetes v1.20 企业级高可用集群自动部署(离线版)

注:确保所有节点系统时间一致

1、找一台服务器安装Ansible

# yum install epel-release -y
# yum install ansible -y

2、下载所需文件

下载Ansible部署文件:

# git clone https://github.com/wuhu-k8s/ansible-install-k8s
# cd ansible-install-k8s

下载准备好软件包(包含所有涉及文件和镜像,比较大),解压到/root目录:

云盘链接:https://pan.baidu.com/s/1uCLylsj1-W2HigS_Tn9b5g 提取码:bicc

# tar zxf binary_pkg.tar.gz

3、修改Ansible文件

修改hosts文件,根据规划修改对应IP和名称。

# vi hosts
...

修改group_vars/all.yml文件,修改软件包目录和证书可信任IP。

# vim group_vars/all.yml
software_dir: '/root/binary_pkg'
...
cert_hosts:
  k8s:
  etcd:

4、一键部署

4.1 架构图

单Master架构 avatar

多Master架构 avatar

4.2 部署命令

单Master版:

# ansible-playbook -i hosts single-master-deploy.yml -uroot -k

多Master版:

# ansible-playbook -i hosts multi-master-deploy.yml -uroot -k

5、查看集群节点

# kubectl get node
NAME          STATUS   ROLES    AGE   VERSION
k8s-master    Ready    <none>   9h    v1.20.4
k8s-node1     Ready    <none>   9h    v1.20.4
k8s-node2     Ready    <none>   9h    v1.20.4

6、其他

6.1 部署控制

如果安装某个阶段失败,可针对性测试.

例如:只运行部署插件

# ansible-playbook -i hosts single-master-deploy.yml -uroot -k --tags addons

6.2 节点扩容

1)修改hosts,添加新节点ip

# vi hosts
...
[newnode]
192.168.31.75 node_name=k8s-node3

2)执行部署

# ansible-playbook -i hosts add-node.yml -uroot -k

6.3 所有HTTPS证书存放路径

部署产生的证书都会存放到目录“ansible-install-k8s-master/ssl”,一定要保存好,后面还会用到~

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