持续集成环境搭建(三):利用Harbor搭建私有镜像仓库和Mir

利用Harbor搭建私有镜像仓库和Mirror服务器，可以让K8S节点通过Mirror服务器获取公网镜像，通过私有镜像仓库获取本地产品镜像，大大的方便了镜像的获取和管理。

一、环境准备

HostName	OS	IP	CPU	Memory
k8s.master	CentOS Linux release 7.3.1611 (Core)	192.168.130.247	2C	2048MB
k8s.node1	CentOS Linux release 7.3.1611 (Core)	192.168.130.249	2C	2048MB
harbor	CentOS Linux release 7.3.1611 (Core)	192.168.120.164	4C	2048MB
harbor-mirror	CentOS Linux release 7.3.1611 (Core)	192.168.130.248	1C	2048MB

二、Harbor安装

安装方法可参考使用vmware Harbor搭建Private Registry这篇文章，在此就不在赘述了。我们使用harbor做为私有镜像库,harbor-mirror做为mirror服务器。

1.修改harbor.cfg：

• harbor服务器

~]# vi harbor.cfg
...
hostname = webber.harbor.com
...
ssl_cert = /root/cert/webber.harbor.com.crt 
ssl_cert_key = /root/cert/webber.harbor.com.key
...

• harbor-mirror服务器

~]# vi harbor.cfg
...
hostname = harbor.mirror.com
...
ssl_cert = /root/cert/webber.harbor.com.crt 
ssl_cert_key = /root/cert/webber.harbor.com.key
...

2.修改config.yml

• harbor-mirror(Configuring Harbor as a local registry mirror)

~]# vim common/config/registry/config.yml
...
notifications:
  endpoints:
  - name: harbor
    disabled: false
    url: http://core:8080/service/notifications
    timeout: 3000ms
    threshold: 5
    backoff: 1s
proxy:
  remoteurl: https://registry-1.docker.io 

3.启动服务

• harbor

  
  harbor.png

• harbor-mirror

  
  harbor-mirror.png

三、配置客户端(K8S.node1)

1. 添加私钥证书

==============添加harbor服务器私钥==============
~]# mkdir -p /etc/docker/certs.d/webber.harbor.com  
~]# scp root@192.168.120.164:/root/cert/ca.crt  /etc/docker/certs.d/webber.harbor.com/
============添加harbor-mirror服务器私钥=========
~]# mkdir -p /etc/docker/certs.d/harbor.mirror.com 
~]# scp root@192.168.130.248:/root/cert/ca.crt  /etc/docker/certs.d/harbor.mirror.com/

2. 添加registry-mirrors

~]# vi /etc/docker/daemon.json
{
    "registry-mirrors": ["https://harbor.mirror.com","https://webber.harbor.com"]
}

3.重启服务

~]# systemctl restart docker

4.登录harbor和harbor-mirror

~]# docerk login webber.harbor.com 
~]# docerk login harbor.mirror.com
~]# cat /root/.docker/config.json //登录成功后,config.json内容如下
{
    "auths": {
        "harbor.mirror.com": {
            "auth": "YWRtaW46SGFyYm9yMTIzNDU="
        },
        "webber.harbor.com": {
            "auth": "YW5kcmV3OldlYmJlcjEyMw=="
        }
    },
    "HttpHeaders": {
        "User-Agent": "Docker-Client/18.06.3-ce (linux)"
    }

四、验证

1.harbor-mirror验证

• 拉取busybox镜像

~]# docker pull busybox
Using default tag: latest
latest: Pulling from library/busybox
Digest: sha256:954e1f01e80ce09d0887ff6ea10b13a812cb01932a0781d6b0cc23f743a874fd
Status: Downloaded newer image for busybox:latest

image.png

docker客户端会通过harbor-mirror拉取公网镜像,如果已存在，就获取缓存镜像。

2.harbor验证

• 拉取simp_ser镜像

~]# docker pull webber.harbor.com/simp/simp_ser:0.1.3
0.1.3: Pulling from simp/simp_ser
af4b0a2388c6: Pull complete 
7af5e2bf94ec: Pull complete 
b36ca92263b4: Pull complete 
557542eef516: Pull complete 
125ad61a5181: Pull complete 
Digest: sha256:0c6c07d6eccc48795c365f087b4398a8b8ac86587af4a72fb7b2aa3423e017de
Status: Downloaded newer image for webber.harbor.com/simp/simp_ser:0.1.3

• 推送busybox镜像

~]#  docker tag busybox:latest webber.harbor.com/library/busybox:latest
~]# docker push webber.harbor.com/library/busybox:latest
The push refers to repository [webber.harbor.com/library/busybox]
0b97b1c81a32: Pushed 
latest: digest: sha256:f79f7a10302c402c052973e3fa42be0344ae6453245669783a9e16da3d56d5b4 size: 527

image.png