Docker搭建私有仓库registry

拉取上传镜像

拉取镜像

docker pull <registry>[:<port>]/[<namespace>/]<name>:<tag>
# registry  :仓库服务器地址;不指定默认是docker hub
# port      :端口;默认443,因为是https协议；
# namespace :名称空间，指是哪个用户的仓库，如果是顶层仓库，可以省；
# name      :仓库名；
# tag       :标签名；默认是latest版本；

上传镜像

docker push [OPTION]NAME[:TAG]

搭建私有仓库distribution

docker 提供的开源registry，只能作为存储镜像的仓库，没有额外的功能（比如管理页面等）；

# 拉取镜像
[root@localhost ~]# docker pull registry
Using default tag: latest
latest: Pulling from library/registry
486039affc0a: Pull complete
ba51a3b098e6: Pull complete
8bb4c43d6c8e: Pull complete
6f5f453e5f2d: Pull complete
42bc10b72f42: Pull complete
Digest: sha256:7d081088e4bfd632a88e3f3bcd9e007ef44a796fddfe3261407a3f9f04abe1e7
Status: Downloaded newer image for registry:latest
docker.io/library/registry:latest

# 启动registry容器
[root@localhost ~]# docker run -d --name registry -p 5000:5000 -v /data/registry:/var/lib/registry registry:latest
2edaee8264d9276e88fa776ec73bcd2fe8810e340fba43def88036751f3a3dc1

从私有仓库上传下载镜像

# 给本地仓库打上合适的标签
[root@localhost ~]# docker tag busybox:latest 192.168.100.61:5000/busybox:v0.1
[root@localhost ~]# docker images
REPOSITORY                    TAG                 IMAGE ID            CREATED             SIZE
192.168.100.61:5000/busybox   v0.1                83aa35aa1c79        5 days ago          1.22MB

# 上传镜像（失败原因：docker上传下载默认只支持https协议，搭建的私有仓库是http协议
[root@localhost ~]# docker push 192.168.100.61:5000/busybox:v0.1
The push refers to repository [192.168.100.61:5000/busybox]
Get https://192.168.100.61:5000/v2/: http: server gave HTTP response to HTTPS client

# 将私有仓库认证为安全仓库，重启
[root@localhost ~]# vim /etc/docker/daemon.json
{
  "registry-mirrors": ["https://xxxxxx.mirror.aliyuncs.com"],    # 这个是我的阿里云镜像加速器地址
  "insecure-registries": ["192.168.100.61:5000"]
}
[root@localhost ~]# systemctl daemon-reload
[root@localhost ~]# systemctl restart docker

# 再次上传镜像
[root@localhost ~]# docker push 192.168.100.61:5000/busybox:v0.1
The push refers to repository [192.168.100.61:5000/busybox]
a6d503001157: Pushed
v0.1: digest: sha256:afe605d272837ce1732f390966166c2afff5391208ddd57de10942748694049d size: 527

# 在私有仓库验证
[root@localhost ~]# ls /data/registry/docker/registry/v2/
blobs  repositories

# 删除镜像再从私有仓库拉取
[root@localhost ~]# docker rmi 192.168.100.61:5000/busybox:v0.1
Untagged: 192.168.100.61:5000/busybox:v0.1
Untagged: 192.168.100.61:5000/busybox@sha256:afe605d272837ce1732f390966166c2afff5391208ddd57de10942748694049d
[root@localhost ~]# docker images
REPOSITORY          TAG                 IMAGE ID            CREATED             SIZE
busybox             latest              83aa35aa1c79        5 days ago          1.22MB
registry            latest              708bc6af7e5e        7 weeks ago         25.8MB
[root@localhost ~]# docker pull 192.168.100.61:5000/busybox:v0.1
v0.1: Pulling from busybox
Digest: sha256:afe605d272837ce1732f390966166c2afff5391208ddd57de10942748694049d
Status: Downloaded newer image for 192.168.100.61:5000/busybox:v0.1
192.168.100.61:5000/busybox:v0.1
[root@localhost ~]# docker images
REPOSITORY                    TAG                 IMAGE ID            CREATED             SIZE
192.168.100.61:5000/busybox   v0.1                83aa35aa1c79        5 days ago          1.22MB
busybox                       latest              83aa35aa1c79        5 days ago          1.22MB
registry                      latest              708bc6af7e5e        7 weeks ago         25.8MB