目录
1、下载镜像Docker Registry
2、运行私有库Registry，相当于本地有个私有的Docker hub
3、演示创建一个新镜像，Ubuntu安装ifconfig命令
4、curl验证私服库上有什么镜像
5、将新镜像修改符合私服规范的tag
6、修改配置文件使之支持http
7、push推送到私服库
8、curl验证私服库上有什么镜像
9、pull到本地运行
1、下载镜像Docker Registry
[root@localhost ~]# docker pull registry
Using default tag: latest
latest: Pulling from library/registry
79e9f2f55bf5: Pull complete
0d96da54f60b: Pull complete
5b27040df4a2: Pull complete
e2ead8259a04: Pull complete
3790aef225b9: Pull complete
Digest: sha256:169211e20e2f2d5d115674681eb79d21a217b296b43374b8e39f97fcf866b375
Status: Downloaded newer image for registry:latest
docker.io/library/registry:latest
[root@localhost ~]#
[root@localhost ~]# docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
registry.cn-hangzhou.aliyuncs.com/wuzhaobo_test/myubuntu 1.1 a32a52da6413 26 hours ago 177MB
registry latest b8604a3fe854 2 years ago 26.2MB
2、运行私有库Registry，相当于本地有个私有的Docker hub
命令：
-v 宿主机的路径:容器内的路径
[root@localhost usr]# docker run -d -p 5000:5000 -v /usr/myregistry/:/tmp/registry --privileged=true registry
017625b728228dffc240388e0728a969e20be0f0ebf098cc5b8ccc1af4de55bb
[root@localhost usr]#
[root@localhost usr]# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
017625b72822 registry "/entrypoint.sh /etc…" 6 seconds ago Up 5 seconds 0.0.0.0:5000->5000/tcp, :::5000->5000/tcp boring_hopper
[root@localhost usr]# 3、演示创建一个新镜像，Ubuntu安装ifconfig命令
启动一个镜像，这个ubuntu，是不具备vim命令的，最初的那个镜像
[root@localhost usr]# docker run -it ubuntu /bin/bash
root@2b0c6f8d15f0:/# vim a.txt
bash: vim: command not found
root@2b0c6f8d15f0:/#
root@2b0c6f8d15f0:/# ifconfig
bash: ifconfig: command not found
root@2b0c6f8d15f0:/#
#安装ifconfig
root@2b0c6f8d15f0:/# apt-get update
root@2b0c6f8d15f0:/# apt-get install net-tools
root@2b0c6f8d15f0:/# ifconfig
eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 172.17.0.3 netmask 255.255.0.0 broadcast 172.17.255.255
ether 02:42:ac:11:00:03 txqueuelen 0 (Ethernet)
RX packets 8475 bytes 32375039 (32.3 MB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 7578 bytes 414607 (414.6 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1 (Local Loopback)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
root@2b0c6f8d15f0:/#
#commit 成自己的私有镜像
Ctrl+p+q退出
[root@localhost usr]# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
2b0c6f8d15f0 ubuntu "/bin/bash" 6 minutes ago Up 6 minutes eager_wright
017625b72822 registry "/entrypoint.sh /etc…" 8 minutes ago Up 8 minutes 0.0.0.0:5000->5000/tcp, :::5000->5000/tcp boring_hopper
[root@localhost usr]#
[root@localhost usr]# docker commit -m="add ifconfig cmd" -a="wu" 2b0c6f8d15f0 wuubuntu:1.2
sha256:21423a381c8c6769e410a20d3cf11d773c1caad29ea1c1ecadb7c6c197033e88
[root@localhost usr]#
[root@localhost usr]# docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
wuubuntu 1.2 21423a381c8c 4 seconds ago 126MB
#停止原始的镜像
[root@localhost usr]# docker stop 2b0c6f8d15f0
2b0c6f8d15f0
#启动新镜像
[root@localhost usr]# docker run -it 21423a381c8c /bin/bash
root@adc1c0b57a68:/#
root@adc1c0b57a68:/# ifconfig
eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 172.17.0.3 netmask 255.255.0.0 broadcast 172.17.255.255
ether 02:42:ac:11:00:03 txqueuelen 0 (Ethernet)
RX packets 6 bytes 508 (508.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1 (Local Loopback)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
root@adc1c0b57a68:/# 4、curl验证私服库上有什么镜像
现在有一个新的镜像，有一个私有库在运行，我们要把这个镜像推送到私有库
[root@localhost usr]# docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
wuubuntu 1.2 21423a381c8c 4 minutes ago 126MB
registry.cn-hangzhou.aliyuncs.com/wuzhaobo_test/myubuntu 1.1 a32a52da6413 26 hours ago 177MB
wu/ubuntu latest 9fd000d64b52 2 days ago 72.8MB
redis latest 7614ae9453d1 2 years ago 113MB
registry latest b8604a3fe854 2 years ago 26.2MB
ubuntu latest ba6acccedd29 2 years ago 72.8MB
hello-world latest feb5d9fea6a5 2 years ago 13.3kB
[root@localhost usr]#
先验证私有库是否有其他镜像
[root@localhost usr]# curl -XGET http://192.168.153.128:5000/v2/_catalog
{"repositories":[]} #为空，表示没有
[root@localhost usr]#
5、将新镜像修改符合私服规范的tag
公式：
docker tag 镜像:Tag Host:port/Repository:Tag
使用命令 docker tag 将wuubuntu:1.2这个镜像修改为192.168.153.128:5000/wuubuntu:1.2
[root@localhost usr]# docker tag wuubuntu:1.2 192.168.153.128:5000/wuubuntu:1.2
[root@localhost usr]#
[root@localhost usr]# docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
192.168.153.128:5000/wuubuntu 1.2 21423a381c8c 13 minutes ago 126MB
wuubuntu 1.2 21423a381c8c 13 minutes ago 126MB
#可以看到已经成功了，wuubuntu 为本地的镜像，192.168.153.128:5000/wuubuntu为传到私服库的镜像，所以需要按照私服库的规范来。
6、修改配置文件使之支持http
由于docker 有安全加固，默认是不支持http方式推送镜像的，所以需要做一个配置，取消限制
[root@localhost usr]# cat /etc/docker/daemon.json
{
"registry-mirrors": ["https://t2exmlj4.mirror.aliyuncs.com"],
"insecure-registries": ["192.168.153.128:5000"]
}
[root@localhost usr]#
添加："insecure-registries": ["192.168.153.128:5000"]
注意：这是JSON格式，两个配置中间有逗号
修改完如果不生效，建议重启docker
7、push推送到私服库
[root@localhost usr]# docker push 192.168.153.128:5000/wuubuntu:1.2
The push refers to repository [192.168.153.128:5000/wuubuntu]
a7d9a2b2f1ad: Pushed
9f54eef41275: Pushed
1.2: digest: sha256:e248a868f5367e4416b1e609bf46b2d01a241758488d6abc467cc0dfeb782a48 size: 741
[root@localhost usr]#
8、curl验证私服库上有什么镜像
[root@localhost usr]# curl -XGET http://192.168.153.128:5000/v2/_catalog
{"repositories":["wuubuntu"]}
[root@localhost usr]# 9、pull到本地运行
[root@localhost usr]# docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
192.168.153.128:5000/wuubuntu 1.2 21423a381c8c 25 minutes ago 126MB
wuubuntu 1.2 21423a381c8c 25 minutes ago 126MB
registry.cn-hangzhou.aliyuncs.com/wuzhaobo_test/myubuntu 1.1 a32a52da6413 26 hours ago 177MB
wu/ubuntu latest 9fd000d64b52 2 days ago 72.8MB
redis latest 7614ae9453d1 2 years ago 113MB
registry latest b8604a3fe854 2 years ago 26.2MB
ubuntu latest ba6acccedd29 2 years ago 72.8MB
[root@localhost usr]#
[root@localhost usr]# docker rmi -f 192.168.153.128:5000/wuubuntu:1.2
Untagged: 192.168.153.128:5000/wuubuntu:1.2
Untagged: 192.168.153.128:5000/wuubuntu@sha256:e248a868f5367e4416b1e609bf46b2d01a241758488d6abc467cc0dfeb782a48
[root@localhost usr]#
[root@localhost usr]# docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
wuubuntu 1.2 21423a381c8c 26 minutes ago 126MB
registry.cn-hangzhou.aliyuncs.com/wuzhaobo_test/myubuntu 1.1 a32a52da6413 26 hours ago 177MB
wu/ubuntu latest 9fd000d64b52 2 days ago 72.8MB
redis latest 7614ae9453d1 2 years ago 113MB
registry latest b8604a3fe854 2 years ago 26.2MB
ubuntu latest ba6acccedd29 2 years ago 72.8MB
[root@localhost usr]#
[root@localhost usr]# docker rmi -f wuubuntu:1.2
Untagged: wuubuntu:1.2
Deleted: sha256:21423a381c8c6769e410a20d3cf11d773c1caad29ea1c1ecadb7c6c197033e88
Deleted: sha256:ef4795b52a13423fe8fa35cd9ec3f2ec4977474cda1d12279ae70af25d097b59
[root@localhost usr]#
[root@localhost usr]# docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
registry.cn-hangzhou.aliyuncs.com/wuzhaobo_test/myubuntu 1.1 a32a52da6413 26 hours ago 177MB
wu/ubuntu latest 9fd000d64b52 2 days ago 72.8MB
redis latest 7614ae9453d1 2 years ago 113MB
registry latest b8604a3fe854 2 years ago 26.2MB
ubuntu latest ba6acccedd29 2 years ago 72.8MB
[root@localhost usr]#
[root@localhost usr]# curl -XGET http://192.168.153.128:5000/v2/_catalog
{"repositories":["wuubuntu"]}
[root@localhost usr]#
[root@localhost usr]# docker pull 192.168.153.128:5000/wuubuntu:1.2
1.2: Pulling from wuubuntu
7b1a6ab2e44d: Already exists
f224faf5dd6c: Pull complete
Digest: sha256:e248a868f5367e4416b1e609bf46b2d01a241758488d6abc467cc0dfeb782a48
Status: Downloaded newer image for 192.168.153.128:5000/wuubuntu:1.2
192.168.153.128:5000/wuubuntu:1.2
[root@localhost usr]#
[root@localhost usr]# docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
192.168.153.128:5000/wuubuntu 1.2 21423a381c8c 29 minutes ago 126MB
registry.cn-hangzhou.aliyuncs.com/wuzhaobo_test/myubuntu 1.1 a32a52da6413 26 hours ago 177MB
wu/ubuntu latest 9fd000d64b52 2 days ago 72.8MB
redis latest 7614ae9453d1 2 years ago 113MB
registry latest b8604a3fe854 2 years ago 26.2MB
ubuntu latest ba6acccedd29 2 years ago 72.8MB
[root@localhost usr]#
[root@localhost usr]# docker run -it 192.168.153.128:5000/wuubuntu:1.2 /bin/bash
root@d4a076e9949e:/#
root@d4a076e9949e:/# ifconfig
eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 172.17.0.3 netmask 255.255.0.0 broadcast 172.17.255.255
ether 02:42:ac:11:00:03 txqueuelen 0 (Ethernet)
RX packets 7 bytes 578 (578.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1 (Local Loopback)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
root@d4a076e9949e:/#
