實踐出真知——一文教你如何搭建docker私有倉庫
前言
創建docker私有倉庫的目的在於私密性，適用於團體內部，如公司部門，企業內部等需要在團體成員中共享docker相關資源的場景。
那麼如何搭建屬於自己企業或團體成員可以使用的docker私有倉庫呢？筆者將通過下面的實際搭建流程結合步驟描述來介紹docker私有倉庫搭建的具體過程。
實際案例搭建過程
1、下載registry鏡像
[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，開放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
#建議直接執行下面的這個命令，因爲筆者遇到start這個容器發現退出的狀態碼非0（後面解決了，使用/bin/sh環境即可）
[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命令的解釋：
-d ——守護進程
-v ——數據卷設置{/data/registry表示的宿主機系統中的一個絕對路徑，沒有的時候會自動創建，/tmp/registry表示容器內部的目錄}
#宿主機目錄
[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
#容器內部目錄
[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、客戶端設置daemon.json文件 （指定私有倉庫位置）
[root@localhost ~]# vim /etc/docker/daemon.json
{
"insecure-registries": ["20.0.0.149:5000"], #將本地服務器作爲私有倉庫位置
"registry-mirrors": ["https://5m9y9qbl.mirror.aliyuncs.com"]
}
[root@localhost ~]# systemctl restart docker
4、創建本地的鏡像標籤
[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、上傳鏡像
[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"]}
#有上面的結果表示上傳成功6、下載鏡像測試
[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 ~]#
測試：
[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 ~]#
拉取成功並且拉取鏡像的速度很快。
最後給出上面出現的狀態碼錯誤的問題具體解決
