linux 离线部署,CentOS 7下离线方式部署kubernetes 1.16.0
Kubernetes在2019年9月18日发布了年度的第三个版本1.16，这篇文章介绍一下如何使用Easypack的Ansible脚本方式在CentOS7上完成Kubernetes的一键安装。
环境构成说明
设定项详细信息
构成
一主一从(同一台机器)
IP
192.168.163.132
网卡名称
enp0s3
Kubernetes
1.16.0
Docker
18.09.7
ETCD
3.3.13
FLANNEL
0.10.0
安装步骤
步骤1：下载easypack
[root@host132 tmp]# git clone https://github.com/liumiaocn/easypack.git
Cloning into ‘easypack’…
…省略
[root@host132 tmp]#
步骤2: 下载相关离线二进制文件
注：目前直接使用download的role，会下载并打包生成1.15的kubernetes相关的二进制文件，然后手动下载kubernetes的二进制文件进行替换即可，下载目录为：
https://dl.k8s.io/v1.16.0/kubernetes-server-linux-amd64.tar.gz
步骤3: 调整配置
只需要修改common_vars.yml的如下两处设定即可
设定项设定参数设定值
var_all_in_one_hostip
Master节点IP地址
192.168.163.132
var_flannel_opt_iface
网卡名称
enp0s3
步骤4: 一键安装
前提条件
条件1: 安装ansible，建议版本2.4.2.0或以上
条件2: 本机连接的ssh设定完毕，简单来说ssh-copy-id 192.168.163.132(请使用本机IP)执行完成
安装命令：
ansible-playbook 10.all-in-one.yml
安装示例
[root@host132 ansible]# ansible-playbook 10.all-in-one.yml
PLAY [all-in-one] **********************************************************************************************************************
TASK [clean : stop etcd service] *******************************************************************************************************
...省略
TASK [dashboard : create clusterrolebinding for dashboard] *****************************************************************************
changed: [localhost]
PLAY RECAP *****************************************************************************************************************************
localhost : ok=103 changed=95 unreachable=0 failed=0
[root@host132 ansible]#
结果确认
版本确认
[root@host132 ansible]# kubectl version
Client Version: version.Info{Major:"1", Minor:"16", GitVersion:"v1.16.0", GitCommit:"2bd9643cee5b3b3a5ecbd3af49d09018f0773c77", GitTreeState:"clean", BuildDate:"2019-09-18T14:36:53Z", GoVersion:"go1.12.9", Compiler:"gc", Platform:"linux/amd64"}
Server Version: version.Info{Major:"1", Minor:"16", GitVersion:"v1.16.0", GitCommit:"2bd9643cee5b3b3a5ecbd3af49d09018f0773c77", GitTreeState:"clean", BuildDate:"2019-09-18T14:27:17Z", GoVersion:"go1.12.9", Compiler:"gc", Platform:"linux/amd64"}
[root@host132 ansible]#
节点确认
[root@host132 ansible]# kubectl get node -o wide
NAME STATUS ROLES AGE VERSION INTERNAL-IP EXTERNAL-IP OS-IMAGE KERNEL-VERSION CONTAINER-RUNTIME
192.168.163.132 Ready 81s v1.16.0 192.168.163.132 CentOS Linux 7 (Core) 3.10.0-957.el7.x86_64 docker://18.9.7
[root@host132 ansible]#
coredns与dashboard服务确认
[root@host132 ansible]# kubectl get services -n kube-system
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
kube-dns ClusterIP 10.254.0.2 53/UDP,53/TCP 2m15s
kubernetes-dashboard NodePort 10.254.28.13 443:33307/TCP 110s
[root@host132 ansible]#
[root@host132 ansible]# kubectl get pods -n kube-system
NAME READY STATUS RESTARTS AGE
coredns-59db588569-mx6vw 1/1 Running 0 2m24s
kubernetes-dashboard-7c54d59f66-l2pqx 1/1 Running 0 119s
[root@host132 ansible]#
dashboard的token确认
[root@host132 ansible]# dashboard_secret=`kubectl get secrets -n kube-system | grep dashboard-admin | awk '{print $1}'`
[root@host132 ansible]# kubectl describe secret -n kube-system ${dashboard_secret} | grep -E '^token' | awk '{print $2}'
eyJhbGciOiJSUzI1NiIsImtpZCI6Imt2OG1UdHFzT0t5Tnp6VjRtNlZORmt6Tk5LRzhFRG01WTlXaU16LUVZNFkifQ.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.sImW-gcsHr7NJjEbIOOO1TRB0ZlF-CFRb9AXq8O38qf9E0xSZPUXeRFf8i9AST1HDZn8ugAv77TVtzj8AJaL4hxz6LylQpjhkpBxkpRMA7A7V8nhaYPxSvZUJBSpj_h2NcXNrpj7m0_V0axk9VguE_kcuTWlr2sR7x35Xmf-lxWS0yQAUkvaX26F59IBVCXZ2_A5cHWbfBvufBcGPrhKuVfJiHTUyDLha37Ze1OCCsPJP-HDnwniJsdIac89M9w9QZ1qNrtRXAlKLN24pXg_Ki5dkmYU4ImkF4YRsHAfzqkmaYHc-UoKUzJET1UqjHyqKoK64JuNHeer4RwADBF7CQ
[root@host132 ansible]#
dashboard确认
使用https://localhost:33307登陆dashboard界面，选择token方式，并粘贴上述token信息
登陆之后即可看到dashboard可视化界面展示的Kubernetes相关的信息
