docker-ce版本私有仓库搭建
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说明:本文中私有仓库的ip地址为10.10.172.203:5000,操作系统为CentOS7.2;
服务端:10.10.172.203/24
第一步:
1,从Docker官方仓库里下载registry镜像
2、docker images命令查看本地镜像;
默认情况下,会将私有仓库存放于容器内的/tmp/registry目录下,这样如果容器被删除,则存放于容器中的镜像也会丢失。
所以一般情况下会指定本地一个目录挂载到容器内的/tmp/registry下,命令如下:
#docker run -d -it --restart always --name docker-hub -p 5000:5000 -v /docker-hub/registry:/var/lib/registry registry
由上可以看到,已经启动了一个容器,地址为:10.10.172.203:5000。
3、由于仓库与客户端的https问题,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
[[email protected] ~]
# 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
[[email protected] ~]
#
或者
[[email protected] ~]
# cat /etc/docker/daemon.json
{
"registry-mirrors"
: [
"http://df98fb04.m.daocloud.io"
],
"insecure-registries"
:[
"10.10.172.203:5000"
]
}
[[email protected] ~]
#
重新加载docker服务
[[email protected] ~]
# systemctl daemon-reload
[[email protected] ~]
# systemctl restart docker
注:因为Docker从1.3.X之后,与docker registry交互默认使用的是https,然而此处搭建的私有仓库只提供http服务,所以当与私有仓库交互时就会报上面的错误。
为了解决这个问题需要在启动docker server时增加启动参数为默认使用http访问。
需要在docker的配置文件
/etc/sysconfig/docker
(ubuntu系统中的docker配置文件时
/etc/default/docker
)添加参数“--insecure-registry=10.10.172.203:5000”。
温馨提示:
这个是在客户机的docker配置文件里添加的(即上传镜像到私有仓库里或从私有仓库下载镜像的客户机)。
4、重新启动docker。(如果是在虚拟机中运行,重启一下虚拟机,要不然还是使用其他机器访问此仓库还是会有https的问题)
1 | # systemctl restart docker |
5、docker tag将镜像打tag,语法格式如下
docker tag <image_name> <registry_ip>:5000/<image_name>:<version> |
1 |
|
1 2 3 4 5 | [[email protected] ~] # 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、镜像的上传与下载,语法格式如下
1 2 | docker push <registry_ip>:5000/<image_name>:<version>;上传镜像至私有仓库 docker pull <registry_ip>:5000/<image_name>:<version>;从私有仓库pull镜像 |
1 | # docker push 10.10.172.203:5000/centos7 |
1 2 3 4 5 | [[email protected] ~] # 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 [[email protected] ~] # |
7、使用curl 10.10.172.203:5000/v2/_catalog 查看仓库中的镜像情况
1 2 3 | [[email protected] ~] # curl 10.10.172.203:5000/v2/_catalog { "repositories" :[ "centos7" ]} [[email protected] ~] # |
注意查看镜像方法(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 |
客户端下载私有仓库镜像:
配置docker信任私有仓库地址(http)
1 2 3 4 5 | [[email protected] ~] # cat /etc/docker/daemon.json { "registry-mirrors" : [ "http://df98fb04.m.daocloud.io" ], "insecure-registries" :[ "10.10.172.203:5000" ] } |
2.查看客户端本机镜像列表
1 2 3 | [[email protected] ~] # docker images REPOSITORY TAG IMAGE ID CREATED SIZE centos latest ff426288ea90 3 weeks ago 207MB |
3.从私有仓库下载centos镜像
1 2 3 4 5 | [[email protected] ~] # 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.再次查看客户端本机镜像列表
1 2 3 4 5 | [[email protected] ~] # 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 [[email protected] ~] # |
总结:使用企业内部私有镜像仓库中的镜像,大大节省了镜像下载的时间。
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