基于IP的docker private registry 私有仓库的搭建

鉴于国内的网络环境，如果公司内部大量使用docker，镜像上传下载将是个非常耗时的工作，搭建一个私有仓库可以很好的解决自有镜像的存储，如果你在私有网络，不能使用域名的话，那么本文可以作为一个很好的例子。

本文参考了大量文档，整理而成，由于时间已久，出处也忘记了，如果有读者知道可以留言，我备注出处。

本教程操作系统：Ubuntu 16.04

1, 安装配置 Docker Registry

$ mkdir ~/docker-registry && cd $_
$ makir data

编写 docker-compose 文件

$ cd ~/docker-registry
$ vi docker-compose.ym

添加以下内容

registry:
  image: registry:2
  restart: always
  ports:
    - 127.0.0.1:5000:5000
  environment:
    REGISTRY_STORAGE_FILESYSTEM_ROOTDIRECTORY: /data
  volumes:
    - ./data:/data

2, 安装配置 nginx

$ mkdir ~/docker-registry/nginx
$ cd ~/docker-registry

修改 docker-compose.ym

nginx:
  image: "nginx:1.9"
  restart: always
  ports:
    - 443:443
  links:
    - registry:registry
  volumes:
    - ./nginx/:/etc/nginx/conf.d
registry:
  image: registry:2
  ports:
    - 127.0.0.1:5000:5000
  environment:
    REGISTRY_STORAGE_FILESYSTEM_ROOTDIRECTORY: /data
  volumes:
    - ./data:/data

创建 registry.conf

$ vi ~/docker-registry/nginx/registry.conf

添加一下内容

upstream docker-registry {
  server registry:5000;
}

server {
  listen 443;
  server_name 192.168.200.150;

  # SSL
  # ssl on;
  # ssl_certificate /etc/nginx/conf.d/domain.crt;
  # ssl_certificate_key /etc/nginx/conf.d/domain.key;

  # disable any limits to avoid HTTP 413 for large image uploads
  client_max_body_size 0;

  # required to avoid HTTP 411: see Issue #1486 (https://github.com/docker/docker/issues/1486)
  chunked_transfer_encoding on;

  location /v2/ {
    # Do not allow connections from docker 1.5 and earlier
    # docker pre-1.6.0 did not properly set the user agent on ping, catch "Go *" user agents
    if ($http_user_agent ~ "^(docker\/1\.(3|4|5(?!\.[0-9]-dev))|Go ).*$" ) {
      return 404;
    }

    # To add basic authentication to v2 use auth_basic setting plus add_header
    # auth_basic "registry.localhost";
    # auth_basic_user_file /etc/nginx/conf.d/registry.password;
    # add_header 'Docker-Distribution-Api-Version' 'registry/2.0' always;

    proxy_pass                          http://docker-registry;
    proxy_set_header  Host              $http_host;   # required for docker client's sake
    proxy_set_header  X-Real-IP         $remote_addr; # pass on real client's IP
    proxy_set_header  X-Forwarded-For   $proxy_add_x_forwarded_for;
    proxy_set_header  X-Forwarded-Proto $scheme;
    proxy_read_timeout                  900;
  }
}

修改 server_name 未内网ip，本例中是 192.168.200.150

3, 配置 nginx SSL

修改 registry.conf, 去掉 SSL注释

  # SSL
  ssl on;
  ssl_certificate /etc/nginx/conf.d/domain.crt;
  ssl_certificate_key /etc/nginx/conf.d/domain.key;

创建CA

$ cd ~/docker-registry/nginx

生成CA私钥

$ openssl genrsa -out devdockerCA.key 2048

生成CA公钥

$ openssl req -x509 -new -nodes -key devdockerCA.key -days 10000 -out devdockerCA.crt

创建服务器密钥

创建服务器私钥，在nginx配置ssl_certificate_key时使用

$ openssl genrsa -out domain.key 2048

拷贝 /etc/ssl/openssl.cnf 到 ~/docker-registry/nginx 目录，修改
openssl 以下部分，

去掉下面这行注释：
req_extensions = v3_req

找到以下部分：
[ v3_req ]
# Extensions to add to a certificate request
basicConstraints = CA:FALSE
keyUsage = nonRepudiation, digitalSignature, keyEncipherment
# 添加下面这行， IP修改为你服务器的ip
subjectAltName = IP: 192.168.200.150

创建服务器公钥，在nginx配置ssl_certificate时使用

 $ openssl req -new -key domain.key -out dev-docker-registry.com.csr -config openssl.cnf

创建过程中，Common Name 输入服务器地址，本例为 192.168.200.150

生成签名证书

$ openssl x509 -req -in dev-docker-registry.com.csr -CA devdockerCA.crt -CAkey devdockerCA.key -CAcreateserial -out domain.crt -days 10000  -extensions v3_req -extfile openssl.cnf

重启 docker 服务

$ sudo systemctl restart docker

4, 测试 SSL

$ cd ~/docker-registry
$ docker-compose up

命令行测试 curl https://192.168.200.150/v2/, 输出为{}

5, 客户端访问 registry

客户端添加CA， 拷贝 ~/docker-registry/nginx/devdockerCA.crt 内容，

在客户机新建
$ sudo vi /usr/local/share/ca-certificates/docker-dev-cert/devdockerCA.crt

添加拷贝内容。

更新证书

$ sudo update-ca-certificates

mac用户

sudo security add-trusted-cert -d -r trustRoot -k /Library/Keychains/System.keychain devdockerCA.crt

重启 docker 服务

$ sudo systemctl restart docker

测试

$ docker pull hello-world 
$ docker tag hello-world  192.168.200.150/test/hello-world 
$ docker push 192.168.200.150/test/hello-world