实践出真知——一文教你如何搭建docker私有仓库

Posted 2021-02-28

实践出真知——一文教你如何搭建docker私有仓库

前言

? 创建docker私有仓库的目的在于私密性，适用于团体内部，如公司部门，企业内部等需要在团体成员中共享docker相关资源的场景。

? 那么如何搭建属于自己企业或团体成员可以使用的docker私有仓库呢？笔者将通过下面的实际搭建流程结合步骤描述来介绍docker私有仓库搭建的具体过程。

实际案例搭建过程

1、下载registry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

2、生成registry容器，开放5000端口

[root@localhost ~]# docker create -it registry /bin/bash
fd51aa59dc5cea7b589d0403e562cb8f0098c3a8a7da239572dd5bfd9423ec96
[root@localhost ~]# docker ps -a
CONTAINER ID        IMAGE               COMMAND                  CREATED             STATUS              PORTS               NAMES
fd51aa59dc5c        registry            "/entrypoint.sh /bin…"   10 seconds ago      Created                                 optimistic_saha
#建议直接执行下面的这个命令，因为笔者遇到start这个容器发现退出的状态码非0（后面解决了，使用/bin/sh环境即可）
[root@localhost ~]# docker run -d -p 5000:5000 -v /data/registry:/tmp/registry registry
ceb498d622ab743fc858a993e3870f9831e20436cb71f7225215f1f0899571f1
[root@localhost ~]# docker ps -a
CONTAINER ID        IMAGE               COMMAND                  CREATED             STATUS              PORTS                    NAMES
ceb498d622ab        registry            "/entrypoint.sh /etc…"   2 seconds ago       Up 2 seconds        0.0.0.0:5000->5000/tcp   strange_swanson

docker run -d -p 5000:5000 -v /data/registry:/tmp/registry registry命令的解释：

-d ——守护进程

-v ——数据卷设置{/data/registry表示的宿主机系统中的一个绝对路径，没有的时候会自动创建，/tmp/registry表示容器内部的目录}

#宿主机目录

[root@localhost ~]# ls /
bin  boot  data  dev  etc  home  lib  lib64  media  mnt  opt  proc  root  run  sbin  srv  sys  tmp  usr  var
[root@localhost ~]# ls /data/
registry

#容器内部目录

[root@localhost ~]# docker exec -it ceb498d622ab /bin/sh
/ # ls /
bin            etc            media          root           srv            usr
dev            home           mnt            run            sys            var
entrypoint.sh  lib            proc           sbin           tmp
/ # ls tmp/
registry

3、客户端设置daemon.json文件 （指定私有仓库位置）

[root@localhost ~]# vim /etc/docker/daemon.json 

{
  "insecure-registries": ["20.0.0.149:5000"], #将本地服务器作为私有仓库位置
  "registry-mirrors": ["https://5m9y9qbl.mirror.aliyuncs.com"]
}
[root@localhost ~]# systemctl restart docker

4、创建本地的镜像标签

[root@localhost ~]# docker pull httpd
Using default tag: latest
latest: Pulling from library/httpd
123275d6e508: Pull complete 
e984dd982a6e: Pull complete 
963280e5cf81: Pull complete 
6faf90d050b2: Pull complete 
962b56984bb0: Pull complete 
Digest: sha256:d5dc0d279039da76a8b490d89a5c96da83a33842493d4336b42ccdfbd36d7409
Status: Downloaded newer image for httpd:latest
docker.io/library/httpd:latest

[root@localhost ~]# docker tag httpd:latest 20.0.0.149:5000/httpd

5、上传镜像

[root@localhost ~]# docker push 149:5000/httpd
The push refers to repository [149:5000/httpd]
An image does not exist locally with the tag: 149:5000/httpd
[root@localhost ~]# docker push 20.0.0.149:5000/httpd
The push refers to repository [20.0.0.149:5000/httpd]
9dabb51b1ca2: Pushed 
4621e8a6d1da: Pushed 
e728c649bc91: Pushed 
1a935e59aa8a: Pushed 
b60e5c3bcef2: Pushed 
latest: digest: sha256:8f10edef61246c6c142a87304d4ffa68298662ecb619776e4e9817d06ec5f567 size: 1367
[root@localhost ~]# curl -XGET http://20.0.0.149:5000/v2/_catalog
{"repositories":["httpd"]}
#有上面的结果表示上传成功

6、下载镜像测试

[root@localhost ~]# docker images
REPOSITORY              TAG                 IMAGE ID            CREATED                  SIZE
httpd                   latest              bdc169d27d36        Less than a second ago   166MB
20.0.0.149:5000/httpd   latest              bdc169d27d36        Less than a second ago   166MB
registry                latest              708bc6af7e5e        2 months ago             25.8MB
[root@localhost ~]# docker rmi bdc169d27d36 
Error response from daemon: conflict: unable to delete bdc169d27d36 (must be forced) - image is referenced in multiple repositories
[root@localhost ~]# docker rmi bdc169d27d36 -f
Untagged: 20.0.0.149:5000/httpd:latest
Untagged: 20.0.0.149:5000/httpd@sha256:8f10edef61246c6c142a87304d4ffa68298662ecb619776e4e9817d06ec5f567
Untagged: httpd:latest
Untagged: httpd@sha256:d5dc0d279039da76a8b490d89a5c96da83a33842493d4336b42ccdfbd36d7409
Deleted: sha256:bdc169d27d36e2438ec8452c7dd7a52a05561b5de7bef8391849b0513a6f774b
Deleted: sha256:6535aa332fb72ca508f550fef8ffb832d4c6bc72a48720b42659e10d47668181
Deleted: sha256:c7bce1fab718a11501a672c895a729b1fdf8099d00fe152bef8c2534ee455976
Deleted: sha256:75b6b2392924b062257ed97e5c2f3aa9f50a922b94c3f7c342d0aed2370e8bec
Deleted: sha256:267e2020b1bd0b182eb02d1a0f3e2f72efc542890ef6159ed9c3570322608de0
Deleted: sha256:b60e5c3bcef2f42ec42648b3acf7baf6de1fa780ca16d9180f3b4a3f266fe7bc
[root@localhost ~]# docker images
REPOSITORY          TAG                 IMAGE ID            CREATED             SIZE
registry            latest              708bc6af7e5e        2 months ago        25.8MB
[root@localhost ~]# 

测试：

[root@localhost ~]# docker pull 20.0.0.149:5000/httpd
Using default tag: latest
latest: Pulling from httpd
123275d6e508: Pull complete 
e984dd982a6e: Pull complete 
963280e5cf81: Pull complete 
6faf90d050b2: Pull complete 
962b56984bb0: Pull complete 
Digest: sha256:8f10edef61246c6c142a87304d4ffa68298662ecb619776e4e9817d06ec5f567
Status: Downloaded newer image for 20.0.0.149:5000/httpd:latest
20.0.0.149:5000/httpd:latest
[root@localhost ~]# 

拉取成功并且拉取镜像的速度很快。

最后给出上面出现的状态码错误的问题具体解决