說明：本文中私有倉庫的ip地址為10.10.172.203:5000，操作系統為CentOS7.2；

服務端：10.10.172.203/24

1、從Docker官方倉庫里下載registry鏡像

1	#?docker?pull?registry

2、docker images命令查看本地鏡像；

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[root@docker?~]#?docker?images?? REPOSITORY??????????TAG?????????????????IMAGE?ID????????????CREATED?????????????SIZE registry????????????latest??????????????d1fd7d86a825????????2?weeks?ago?????????33.3MB

默認情況下，會將私有倉庫存放于容器內的/tmp/registry目錄下，這樣如果容器被刪除，則存放于容器中的鏡像也會丟失。

所以一般情況下會指定本地一個目錄掛載到容器內的/tmp/registry下，命令如下：

1	docker?run?-d?-it?--restart?always?--name?docker-hub?-p?5000:5000?-v?/docker-hub/registry:/var/lib/registry?registry

查看容器運行

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[root@docker?~]#?docker?ps CONTAINER?ID????????IMAGE???????????????COMMAND??????????????????CREATED?????????????STATUS??????????????PORTS????????????????????NAMES 048805afbcf1????????registry????????????"/entrypoint.sh?/etc…"???11?seconds?ago??????Up?8?seconds????????0.0.0.0:5000->5000/tcp???docker-hub

由上可以看到，已經啟動了一個容器，地址為：10.10.172.203:5000。

3、由于倉庫與客戶端的https問題，需要修改/usr/lib/systemd/system/docker.service文件，添加 ExecStart=/usr/bin/dockerd --registry-mirror=http://019a7061.m.daocloud.io ?--insecure-registry 10.10.172.203:5000

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[root@docker?~]#?cat?/usr/lib/systemd/system/docker.service [Unit] Description=Docker?Application?Container?Engine Documentation=https://docs.docker.com After=network-online.target?firewalld.service Wants=network-online.target [Service] Type=notify #?the?default?is?not?to?use?systemd?for?cgroups?because?the?delegate?issues?still #?exists?and?systemd?currently?does?not?support?the?cgroup?feature?set?required #?for?containers?run?by?docker ExecStart=/usr/bin/dockerd?--storage-driver=devicemapper?--storage-opt=dm.thinpooldev=/dev/mapper/docker-thinpool?--storage-opt?dm.use_deferred_removal=true?--registry-mirror=http://019a7061.m.daocloud.io??--insecure-registry?10.10.172.203:5000 ExecReload=/bin/kill?-s?HUP?$MAINPID #?Having?non-zero?Limit*s?causes?performance?problems?due?to?accounting?overhead #?in?the?kernel.?We?recommend?using?cgroups?to?do?container-local?accounting. LimitNOFILE=infinity LimitNPROC=infinity LimitCORE=infinity #?Uncomment?TasksMax?if?your?systemd?version?supports?it. #?Only?systemd?226?and?above?support?this?version. #TasksMax=infinity TimeoutStartSec=0 #?set?delegate?yes?so?that?systemd?does?not?reset?the?cgroups?of?docker?containers Delegate=yes #?kill?only?the?docker?process,?not?all?processes?in?the?cgroup KillMode=process #?restart?the?docker?process?if?it?exits?prematurely Restart=on-failure StartLimitBurst=3 StartLimitInterval=60s [Install] WantedBy=multi-user.target [root@docker?~]#? 或者 [root@docker?~]#?cat?/etc/docker/daemon.json { "registry-mirrors":?["http://df98fb04.m.daocloud.io"], "insecure-registries":["10.10.172.203:5000"]? } [root@docker?~]# 重新加載docker服務 [root@docker?~]#?systemctl?daemon-reload [root@docker?~]#?systemctl?restart?docker? 注：因為Docker從1.3.X之后，與docker?registry交互默認使用的是https，然而此處搭建的私有倉庫只提供http服務，所以當與私有倉庫交互時就會報上面的錯誤。 為了解決這個問題需要在啟動docker?server時增加啟動參數為默認使用http訪問。 需要在docker的配置文件/etc/sysconfig/docker?（ubuntu系統中的docker配置文件時/etc/default/docker?）添加參數“--insecure-registry=10.10.172.203:5000”。 溫馨提示： 這個是在客戶機的docker配置文件里添加的(即上傳鏡像到私有倉庫里或從私有倉庫下載鏡像的客戶機)。

4、重新啟動docker。（如果是在虛擬機中運行，重啟一下虛擬機，要不然還是使用其他機器訪問此倉庫還是會有https的問題）

1	#?systemctl?restart?docker

5、docker tag將鏡像打tag，語法格式如下

1	docker?tag?<image_name>?<registry_ip>:5000/<image_name>:<version>

1	#?docker?tag?centos:latest?10.10.172.203:5000/centos7????//修改了tag后的鏡像若要刪除，docker?rmi后面不能用鏡像ID了，需要用docker?rmi?10.10.172.203:5000/centos7:latest

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[root@docker?~]#?docker?images REPOSITORY???????????????????TAG?????????????????IMAGE?ID????????????CREATED?????????????SIZE registry?????????????????????latest??????????????d1fd7d86a825????????3?weeks?ago?????????33.3MB 10.10.172.203:5000/centos7???latest??????????????ff426288ea90????????3?weeks?ago?????????207MB centos???????????????????????latest??????????????ff426288ea90????????3?weeks?ago?????????207MB

6、鏡像的上傳與下載，語法格式如下

1 2	docker?push?<registry_ip>:5000/<image_name>:<version>;上傳鏡像至私有倉庫 docker?pull?<registry_ip>:5000/<image_name>:<version>;從私有倉庫pull鏡像

1	#?docker?push?10.10.172.203:5000/centos7

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[root@docker?~]#?docker?push?10.10.172.203:5000/centos7 The?push?refers?to?repository?[10.10.172.203:5000/centos7] e15afa4858b6:?Pushed? latest:?digest:?sha256:7e94d6055269edb455bcfb637292573117e4a8341e9b9abbc09b17d8aafe8fbe?size:?529 [root@docker?~]#

7、使用curl 10.10.172.203:5000/v2/_catalog 查看倉庫中的鏡像情況

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[root@docker?~]#?curl?10.10.172.203:5000/v2/_catalog {"repositories":["centos7"]} [root@docker?~]#

注意查看鏡像方法（docker pull registry:2.1.1）:

1 2	#?curl?-XGET?http://registry_ip:5000/v2/_catalog #?curl?-XGET?http://registry_ip:5000/v2/image_name/tags/list

客戶端下載私有倉庫鏡像：

配置docker信任私有倉庫地址(http)

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[root@localhost?~]#?cat?/etc/docker/daemon.json? { "registry-mirrors":?["http://df98fb04.m.daocloud.io"], "insecure-registries":["10.10.172.203:5000"] }

2.查看客戶端本機鏡像列表

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[root@localhost?~]#?docker?images??????????????? REPOSITORY??????????TAG?????????????????IMAGE?ID????????????CREATED?????????????SIZE centos??????????????latest??????????????ff426288ea90????????3?weeks?ago?????????207MB

3.從私有倉庫下載centos鏡像

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[root@localhost?~]#?docker?pull?10.10.172.203:5000/centos7 Using?default?tag:?latest latest:?Pulling?from?centos7 Digest:?sha256:7e94d6055269edb455bcfb637292573117e4a8341e9b9abbc09b17d8aafe8fbe Status:?Downloaded?newer?image?for?10.10.172.203:5000/centos7:latest

4.再次查看客戶端本機鏡像列表

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[root@localhost?~]#?docker?images REPOSITORY???????????????????TAG?????????????????IMAGE?ID????????????CREATED?????????????SIZE 10.10.172.203:5000/centos7???latest??????????????ff426288ea90????????3?weeks?ago?????????207MB centos???????????????????????latest??????????????ff426288ea90????????3?weeks?ago?????????207MB [root@localhost?~]#

總結：使用企業內部私有鏡像倉庫中的鏡像，大大節省了鏡像下載的時間。

本文轉自 dengaosky 51CTO博客，原文鏈接：http://blog.51cto.com/dengaosky/2067156，如需轉載請自行聯系原作者

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