這一篇咱們來聊聊私有倉庫的搭建,其實無論你是經過docker build仍是compose的方式進行構建的鏡像,最終仍是要將生成好的鏡像push到遠程的倉庫中,這樣nginx
多個平臺能夠方便的獲取你registry中的鏡像,不然你不還得帶着你的源代碼處處跑不是? 並且私有倉庫還利於鏡像的獲取分發,反正都是內網,鏡像構建的再大又能怎樣?docker
一:registry server鏡像倉庫json
你能夠到dockerhub上去找一個叫registry server的鏡像,以下圖: https://hub.docker.com/_/registryvim
這裏我有兩臺機器: 跨域
registry: 192.168.23.147安全
client: 192.168.23.146服務器
接下來根據registry的文檔描述,我在147機器上執行如下docker run 命令,開放5000端口。app
[root@localhost ~]# docker run -d -p 5000:5000 --restart always --name registry registry:2 Unable to find image 'registry:2' locally 2: Pulling from library/registry c87736221ed0: Already exists 1cc8e0bb44df: Already exists 54d33bcb37f5: Already exists e8afc091c171: Already exists b4541f6d3db6: Already exists Digest: sha256:8004747f1e8cd820a148fb7499d71a76d45ff66bac6a29129bfdbfdc0154d146 Status: Downloaded newer image for registry:2 80199d4030ed0c444bd27f255201b01e2f5e89abfb4e5d2cd9c61cbbd428baaf [root@localhost ~]# [root@localhost ~]# [root@localhost ~]# docker ps CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES 80199d4030ed registry:2 "/entrypoint.sh /etc…" 15 seconds ago Up 13 seconds 0.0.0.0:5000->5000/tcp registry
從上圖能夠看到 host機的5000端口已經開放,接下來我經過146機器從dockerhub上拉取一個nginx鏡像,而後打包成147前綴的倉庫地址,而後作push。tcp
[root@localhost ~]# docker pull nginx Using default tag: latest latest: Pulling from library/nginx fc7181108d40: Pull complete d2e987ca2267: Pull complete 0b760b431b11: Pull complete Digest: sha256:96fb261b66270b900ea5a2c17a26abbfabe95506e73c3a3c65869a6dbe83223a Status: Downloaded newer image for nginx:latest [root@localhost ~]# docker images REPOSITORY TAG IMAGE ID CREATED SIZE nginx latest f68d6e55e065 2 days ago 109MB [root@localhost ~]# docker tag nginx 192.168.23.147:5000/pnginx [root@localhost ~]# docker images REPOSITORY TAG IMAGE ID CREATED SIZE 192.168.23.147:5000/pnginx latest f68d6e55e065 2 days ago 109MB nginx latest f68d6e55e065 2 days ago 109MB [root@localhost ~]# docker push 192.168.23.147:5000/pnginx The push refers to repository [192.168.23.147:5000/pnginx] Get https://192.168.23.147:5000/v2/: http: server gave HTTP response to HTTPS client
臥槽,報錯了,從錯誤信息中能夠看到,https的client不接受http的response,沒辦法,你得要讓client端接收不安全的http應該就能夠了,這個問題在官方文工具
檔有專門的解決辦法,因此在daemon.json 加上一個不安全的http地址便可,以下圖: https://docs.docker.com/registry/insecure/
有了這個解決方案,在/etc/docker/daemon.json 中將前面的域名改爲 192.168.23.147, 重啓docker,從下面output能夠看到推送成功。
[root@localhost ~]# vim /etc/docker/daemon.json [root@localhost ~]# service docker restart Redirecting to /bin/systemctl restart docker.service [root@localhost ~]# docker push 192.168.23.147:5000/pnginx The push refers to repository [192.168.23.147:5000/pnginx] d2f0b6dea592: Layer already exists 197c666de9dd: Layer already exists cf5b3c6798f7: Layer already exists latest: digest: sha256:00be67d6ba53d5318cd91c57771530f5251cfbe028b7be2c4b70526f988cfc9f size: 948 [root@localhost ~]#
二:docker-registry-ui 可視化UI
鏡像是推送上去了,但在147上沒法查看推送上來的鏡像信息,還得求助於開源社區,在dockerhub你能夠找到一款docker-registry-ui的registry的可視化UI的
工具,以下圖: https://hub.docker.com/r/joxit/docker-registry-ui。
在官方文檔中能夠找獲得一個很是簡單的docker執行命令,這裏就在147上執行吧。
[root@localhost ~]# docker run -d -p 80:80 joxit/docker-registry-ui Unable to find image 'joxit/docker-registry-ui:latest' locally latest: Pulling from joxit/docker-registry-ui e7c96db7181b: Pull complete 3fb6217217ef: Pull complete d5443b40bab6: Pull complete Digest: sha256:59401aa3c3e29b721163f49f81a9be3698d269bd983a5c44d422bb6da2d263a2 Status: Downloaded newer image for joxit/docker-registry-ui:latest 31806479eb0fdff245ba5f9476bf84d28413f18ec3a96770ebf4f903034461a9
由於容器開放了80端口,因此你能夠直接訪問: http://192.168.23.147,而後添加上registry server的地址,以下圖。
當添加完以後,你會發現有一個「跨域請求」的錯誤,這是由於默認的registry server不容許這麼作,因此你得讓registry服務器執行可跨域,其實在官方文檔中
也提到了這個問題,能夠在registry的config配置文件中進行修改。
接下來我根據文檔定義了一個config.yml文件。
version: 0.1
log:
fields:
service: registry
storage:
cache:
blobdescriptor: inmemory
filesystem:
rootdirectory: /var/lib/registry
http:
addr: :5000
headers:
X-Content-Type-Options: [nosniff]
Access-Control-Allow-Origin: ['*'] Access-Control-Allow-Methods: ['*']
Access-Control-Max-Age: [1728000]
health:
storagedriver:
enabled: true
interval: 10s
threshold: 3
再把原來的register容器kill掉,將上面的config.yml經過文件掛載的方式送到容器裏。
[root@localhost app]# docker rm -f registry registry [root@localhost app]# docker run -d -p 5000:5000 --name registry -v /app/config.yml:/etc/docker/registry/config.yml registry:2 c8aa9493ec2fea662c161861f6a952be3c30465deef9219e58f263db37719113 [root@localhost app]# ls config.yml
最後我在146上從新推送一下,固然你也能夠將147上的registry的目錄掛載到volume上或者host filesystem。
[root@localhost ~]# docker push 192.168.23.147:5000/pnginx The push refers to repository [192.168.23.147:5000/pnginx] d2f0b6dea592: Pushed 197c666de9dd: Pushed cf5b3c6798f7: Pushed latest: digest: sha256:00be67d6ba53d5318cd91c57771530f5251cfbe028b7be2c4b70526f988cfc9f size: 948
終於能夠在ui上看到client推送過來的鏡像了,是否是很開心,因爲是內網,就算你的image有個1,2g的又何妨呢,本篇就先說到這裏,但願對你有幫助。