一:docker私有仓库安装
1、 下载镜像是有镜像仓库:
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[root@localhost ~] # systemctl start docker
#如果已经有镜像了,强制删除原来的镜像的方式如下:
[root@xxx-pub /] # docker rmi -f docker.io/registry
untagged: docker.io /registry :latest
untagged: docker.io /registry @sha256:51bb55f23ef7e25ac9b8313b139a8dd45baa832943c8ad8f7da2ddad6355b3c8
[root@xxx-pub /] #
#开始下载最新的镜像。
[root@localhost ~] # docker pull registry
using default tag: latest
latest: pulling from library /registry
4064ffdc82fe: pull complete
c12c92d1c5a2: pull complete
4fbc9b6835cc: pull complete
765973b0f65f: pull complete
3968771a7c3a: pull complete
digest: sha256:20bbbc0f6384cf7dc6e292ccbe75935b73c92ec776543c970904bc60feceb129
status: downloaded newer image for registry:latest
[root@localhost ~] #
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2、 启动并且挂载镜像仓库到本地磁盘:
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[root@xxx-pub /] # docker run -d -v /registry:/home/docker-registry -p 5000:5000 --restart=always --privileged=true --name registry registry:latest
unable to find image 'registry:latest' locally
trying to pull repository docker.io /library/registry ...
latest: pulling from docker.io /library/registry
digest: sha256:51bb55f23ef7e25ac9b8313b139a8dd45baa832943c8ad8f7da2ddad6355b3c8
status: downloaded newer image for docker.io /registry :latest
b7bd2b14ed488936afe798be95f3cd56f604fb092d45cf6f4a58359bcad0d34c
[root@xxx-pub /] #
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- -v /registry:/home/docker-registry:默认情况下,会将仓库存放于容器内的/home/docker-registry目录下,指定本地目录挂载到容器。
- -p 5000:5000 :端口映射。即本地5000端口,映射到registry中的5000端口。
- –restart=always1:在容器退出时总是重启容器,主要应用在生产环境。
- –privileged=true:在centos7中的安全模块selinux把权限禁掉了,参数给容器加特权,不加上传镜像会报类似权限错误。oserror: [errno 13] permission denied: ‘/tmp/registry/repositories/liibrary')或者(received unexpected http status: 500 internal server error)
- –name registry:指定容器的名称。
为了持久化数据,将volume挂载到/home/docker-registry
3、 我们给一个本地镜像打个标签然后上传:
查看本地有哪些镜像:
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[root@xxx-pub /] # docker images
repository tag image id created size
docker.io /centos centos7.5.1804 fdf13fa91c6e 4 weeks ago 200 mb
docker.io /registry latest b2b03e9146e1 2 months ago 33.3 mb
[root@xxx-pub /] #
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以docker.io/centos为案例。
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[root@xxx-pub /] # docker tag fdf13fa91c6e localhost:5000/xxx-centos7.5.1804:1.0
##localhost:5000表示仓库地址,fdf13fa91c6e表示images id,xxx-centos7.5.1804表示镜像名称,1.0表示版本号。
或:
[root@xxx-pub /] # docker tag docker.io/centos:centos7.5.1804 localhost:5000/xxx-centos7.5.1804:1.0
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4、 直接上传:
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[root@xxx-pub /] # docker push localhost:5000/xxx-centos7.5.1804:1.0
the push refers to a repository [localhost:5000 /xxx-centos7 .5.1804]
bcc97fbfc9e1: pushed
1.0: digest: sha256:7c14180942615fef85cb5c8b1388e028be1a8f79694a5fa30a4025173e42ad61 size: 529
[root@xxx-pub /] #
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在push的过程中可能报类似如下的错误(以下是网络上的错误提示):
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[root@localhost ~] # docker push 192.168.174.128:5000/hello:latest
the push refers to a repository [192.168.174.128:5000 /hello ]
unable to ping registry endpoint https: //192 .168.174.128:5000 /v0/
v2 ping attempt failed with error: get https: //192 .168.174.128:5000 /v2/ : http: server gave http response to https client
v1 ping attempt failed with error: get https: //192 .168.174.128:5000 /v1/_ping : http: server gave http response to https client
[root@localhost ~] #
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解决办法:
使用的是https,修改/etc/sysconfig/docker(这里是centos7下的docker)文件,加上add_registry='–add-registry 192.168.18.162:5000',insecure_registry='–insecure-registry 192.168.18.162:5000' (上面是历史的docker版本的配置),如下图:
但是在新的docker容器仓库的配置中,自己的docker容器中的配置采用(这里在docker registry和另外pull镜像的机器上都指定如下的配置):
指定完成之后,要重启docker,重启的配置如下:
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[root@youx-pub volumes] # systemctl restart docker
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另外:查看一下docker.service,查看一下配置文件:
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[root@youx-pub registry] find / -name docker.service
/sys/fs/cgroup/memory/system .slice /docker .service
/sys/fs/cgroup/devices/system .slice /docker .service
/sys/fs/cgroup/blkio/system .slice /docker .service
/sys/fs/cgroup/cpu ,cpuacct /system .slice /docker .service
/sys/fs/cgroup/pids/system .slice /docker .service
/sys/fs/cgroup/systemd/system .slice /docker .service
/usr/lib/systemd/system/docker .service
[root@youx-pub registry] # vim /usr/lib/systemd/system/docker.service
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然后执行一下:
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#因为可以用于systemctl启动的docker.service文件变化了,所以得执行以下配置。然后执行docker的重启工作
systemctl daemon-reload
systemctl restart docker
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如果还是报如下错误:
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[root@youx-pub registry] # docker push 192.168.18.162:5000/nginx:1.2
the push refers to a repository [192.168.18.162:5000 /nginx ]
get https: //192 .168.18.162:5000 /v1/_ping : http: server gave http response to https client
[root@youx-pub registry] #
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解决办法是:
在/etc/docker下创建daemon.json,内容是:
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{ "insecure-registries" :[ "192.168.18.162:5000" ]}
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然后再重启docker容器:
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[root@youx-pub volumes] # systemctl restart docker
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5、 上传完成,我们可以查看一下挂载目录是否有镜像:
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[root@xxx-pub docker-registry] # pwd
/home/docker-registry
[root@xxx-pub docker-registry] # ls /registry/
docker
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6、 关于本地镜像的查看:
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[root@xxx-pub docker-registry] # curl http://192.168.18.162:5000/v2/_catalog
{ "repositories" :[ "xxx-centos7.5.1804" , "xxx-centos7.5.1804-v1.0" ]}
[root@xxx-pub docker-registry] #
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7、 看到有两个镜像,我们要获取他的标签信息以便下载呢:
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[root@xxx-pub docker-registry] # curl http://192.168.18.162:5000/v2/xxx-centos7.5.1804/tags/list
{ "name" : "xxx-centos7.5.1804" , "tags" :[ "1.0" ]}
[root@xxx-pub docker-registry] #
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8、 然后我们直接下载镜像(到另电脑上):
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[root@bigdata2 ~] # docker pull 192.168.18.162:5000/youx-centos7.5.1804:1.0
using default tag: latest
trying to pull repository 192.168.18.162 /youx-centos7 .5.1804 ...
get https: //192 .168.18.162 /v1/_ping : dial tcp 192.168.18.162:443: getsockopt: no route to host
[root@bigdata2 ~] #
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如果出现上面的情况,解决办法是:
编译:
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[root@youx-pub volumes] # vim /etc/containers/registries.conf 这个文件。
旧的是编辑: /etc/sysconfig/docker 这个文件
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然后重启docker
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[root@youx-pub volumes] # systemctl restart docker
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然后发现可以pull了
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#要注意的是,这里的地址是:仓库地址:仓库端口号/repository:tag
[root@bigdata2 ~] # docker pull 192.168.18.162:5000/youx-centos7.5.1804:1.0
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如果还不行,需要修改/etc/docker/daemon.json,内容如下:
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[root@bigdata2 docker] # cat daemon.json
{ "insecure-registries" :[ "192.168.18.162:5000" ]}
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二、从另外一台机器上上传镜像到docker镜像仓库:
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[root@bigdata2 ~] # docker tag centos7-jdk8-nginx:1.0 192.168.18.162:5000/centos7-jdk8-nginx:1.0
[root@bigdata2 ~] # docker images
repository tag image id created size
192.168.18.162:5000 /centos7-jdk8-nginx 1.0 bcacd65e2a2e 2 minutes ago 2.18 gb
[root@bigdata2 ~] # docker push 192.168.18.162:5000/centos7-jdk8-nginx:1.0
the push refers to a repository [192.168.18.162:5000 /centos7-jdk8-nginx ]
f018e9c38a66: pushed
2a47dcd341ef: pushed
c5dea3bc729a: pushed
bcc97fbfc9e1: pushed
1.0: digest: sha256:d907ff2f8eb590209700c01ce85c78d0bc778a4238539d747e4667d68cb52102 size: 1163
[root@bigdata2 ~] #
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然后进入docker镜像仓库所在位置:
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[root@youx-pub registry] # curl http://192.168.18.162:5000/v2/_catalog
{ "repositories" :[ "centos7-jdk8-nginx" , "nginx" ]}
[root@youx-pub registry] # curl http://192.168.18.162:5000/v2/centos7-jdk8-nginx/tags/list
{ "name" : "centos7-jdk8-nginx" , "tags" :[ "1.0" ]}
[root@youx-pub registry] #
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三、本地镜像如何删除,正常是不提供删除功能的,所以使用第三方的插件来进行删除
插件github上的位置:https://github.com/burnettk/delete-docker-registry-image
1、下载资源
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[root@master registry] # curl https://raw.githubusercontent.com/burnettk/delete-docker-registry-image/master/delete_docker_registry_image.py | sudo tee /usr/local/bin/delete_docker_registry_image >/dev/null
sudo chmod a+x /usr/local/bin/delete_docker_registry_image
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2、 设置相关环节变量:
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查找registry_data_dir,命令:
[root@youx-pub registry] # find / -name registry
[root@youx-pub registry] # find / -name registry
/var/lib/docker/overlay2/d72320cd67b42f7ae66342cc6dedab7abe5e89106de8c4919ec8c5a6e5940b09/diff/var/lib/ucf/registry
/var/lib/docker/overlay2/92211417089f7be8239def550e1e89ce3f0e50ac57f2c36ba723ca312ea06ae3/diff/bin/registry
/var/lib/docker/overlay2/c1716aea0b380eb94ead9aa02552769acd4c3dac8e6dab735997f1709ce79a33/diff/etc/docker/registry
/var/lib/docker/overlay2/46f719f01255c431b4343e78607341d6d66ea482bc6d03c3b4e05e7413f46be6/diff/var/lib/registry
/var/lib/docker/overlay2/46f719f01255c431b4343e78607341d6d66ea482bc6d03c3b4e05e7413f46be6/merged/bin/registry
/var/lib/docker/overlay2/46f719f01255c431b4343e78607341d6d66ea482bc6d03c3b4e05e7413f46be6/merged/etc/docker/registry
/var/lib/docker/overlay2/46f719f01255c431b4343e78607341d6d66ea482bc6d03c3b4e05e7413f46be6/merged/var/lib/registry
/var/lib/docker/volumes/1522d54c954c755250cb71686cacd9714cd3d0f0c706ec18c1e490c7881fe713/_data/docker/registry
/opt/data/registry
/registry
[root@youx-pub registry] #
发现
[root@youx-pub repositories] # pwd
/var/lib/docker/volumes/1522d54c954c755250cb71686cacd9714cd3d0f0c706ec18c1e490c7881fe713/_data/docker/registry/v2/repositories
[root@youx-pub repositories] # ls
centos7-jdk8-nginx nginx
[root@youx-pub repositories] #
所以设置镜像仓库的位置为:
[root@master registry] # export registry_data_dir=/var/lib/docker/volumes/1522d54c954c755250cb71686cacd9714cd3d0f0c706ec18c1e490c7881fe713/_data/docker/registry/v2
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地址就是咱们挂载地址:
看一下相关标签:
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[root@youx-pub registry] # curl http://192.168.18.162:5000/v2/_catalog
{ "repositories" :[ "youx-centos7.5.1804" , "youx-centos7.5.1804-v1.0" ]}
[root@youx-pub registry] # curl http://192.168.18.162:5000/v2/youx-centos7.5.1804-v1.0/tags/list
{ "name" : "youx-centos7.5.1804-v1.0" , "tags" :[ "latest" ]}
[root@youx-pub registry] #
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可以之后我们直接删除:
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[root@master registry] # delete_docker_registry_image --image youx-centos7.5.1804-v1.0:latest
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info [2017-04-08 11:39:39,793] deleting /registry/docker/registry/v2/repositories/nginx/_manifests/tags/v1
咱们再看一下本地仓库的镜像有几个:
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[root@master registry] # curl http://192.168.18.162:5000/v2/_catalog
{ "repositories" :[ "youx-centos7.5.1804" ]}
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以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持服务器之家。
原文链接:https://blog.csdn.net/tototuzuoquan/article/details/82025954