docker | 打包容器\提交镜像\拉取镜像(私服库)

这里做个人案例演示

1.下载centos7.9.2009镜像

下载镜像作为后续例子演示

# 查看本地镜像
[root@echohye ~]# docker images
REPOSITORY                                       TAG       IMAGE ID       CREATED         SIZE
registry.cn-hangzhou.aliyuncs.com/echohye/test   1.0       8ff2df30dfcc   2 hours ago     559MB
hello-world                                      latest    feb5d9fea6a5   10 months ago   13.3kB
centos                                           latest    5d0da3dc9764   11 months ago   231MB

# 下载centos7.9.2009
[root@echohye ~]# docker pull centos:7.9.2009
7.9.2009: Pulling from library/centos
2d473b07cdd5: Pull complete
Digest: sha256:9d4bcbbb213dfd745b58be38b13b996ebb5ac315fe75711bd618426a630e0987
Status: Downloaded newer image for centos:7.9.2009
docker.io/library/centos:7.9.2009

# 再次查看本地镜像
[root@echohye ~]# docker images
REPOSITORY                                       TAG        IMAGE ID       CREATED         SIZE
registry.cn-hangzhou.aliyuncs.com/echohye/test   1.0        8ff2df30dfcc   2 hours ago     559MB
hello-world                                      latest     feb5d9fea6a5   10 months ago   13.3kB
centos                                           7.9.2009   eeb6ee3f44bd   11 months ago   204MB

2.运行centos镜像，并下载net-tools库

# 运行并进入容器
[root@echohye ~]# docker run --name=net-test -it eeb6ee3f44bd /bin/bash

# 执行ifconfig命令，可以知道目前系统没有相关指令
[root@df05dbd0f5b7 /]# ifconfig
bash: ifconfig: command not found

# 安装net-tools库
[root@df05dbd0f5b7 /]# yum install net-tools
Loaded plugins: fastestmirror, ovl
Determining fastest mirrors
 * base: mirrors.163.com
 * extras: ftp.sjtu.edu.cn
 * updates: ftp.sjtu.edu.cn
base                                                                      | 3.6 kB  00:00:00
extras                                                                    | 2.9 kB  00:00:00
updates                                                                   | 2.9 kB  00:00:00
(1/4): base/7/x86_64/group_gz                                             | 153 kB  00:00:01
(2/4): extras/7/x86_64/primary_db                                         | 247 kB  00:00:07
(3/4): base/7/x86_64/primary_db                                           | 6.1 MB  00:00:07
(4/4): updates/7/x86_64/primary_db                                        |  16 MB  00:00:13
Resolving Dependencies
--> Running transaction check
---> Package net-tools.x86_64 0:2.0-0.25.20131004git.el7 will be installed
--> Finished Dependency Resolution

...

Running transaction
  Installing : net-tools-2.0-0.25.20131004git.el7.x86_64                                     1/1
  Verifying  : net-tools-2.0-0.25.20131004git.el7.x86_64                                     1/1

Installed:
  net-tools.x86_64 0:2.0-0.25.20131004git.el7

Complete!

# 再次执行ifconfig，发现已经可以运行了
[root@df05dbd0f5b7 /]# ifconfig
eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 172.17.0.2  netmask 255.255.0.0  broadcast 172.17.255.255
        ether 02:42:ac:11:00:02  txqueuelen 0  (Ethernet)
        RX packets 11596  bytes 25107054 (23.9 MiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 9382  bytes 625925 (611.2 KiB)
        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
        loop  txqueuelen 1000  (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

现在，我们就以这个容器作为例子，将其打包上传至本地docker私有库。

3.下载镜像registry

[root@echohye ~]# 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@echohye ~]# docker images
REPOSITORY                                       TAG        IMAGE ID       CREATED         SIZE
registry.cn-hangzhou.aliyuncs.com/echohye/test   1.0        8ff2df30dfcc   2 hours ago     559MB
registry                                         latest     b8604a3fe854   9 months ago    26.2MB
hello-world                                      latest     feb5d9fea6a5   10 months ago   13.3kB
centos                                           7.9.2009   eeb6ee3f44bd   11 months ago   204MB

4.运行私有库Registry，相当于本地有个私有Docker hub

[root@echohye ~]# docker run -d -p 5000:5000 -v /echohye/:/var/lib/registry --privileged=true registry
a2c56f5ac7fe0ad6ed5824a378cd60622e05639b4c9f148049e6eecce89b31ce

[root@echohye ~]# docker ps
CONTAINER ID   IMAGE      COMMAND                  CREATED              STATUS              PORTS                                       NAMES
a2c56f5ac7fe   registry   "/entrypoint.sh /etc…"   About a minute ago   Up About a minute   0.0.0.0:5000->5000/tcp, :::5000->5000/tcp   goofy_heisenberg

默认情况下，仓库被创建在容器的/var/lib/registry目录下，建议自行用容器卷映射，方便于宿主机联调

5.容器打包成镜像

[root@echohye ~]# docker commit -m="ifconfig cmd add ok" -a="echohye" df05dbd0f5b7 mycentos:1.1
sha256:409b137b25d9c63171fca9bddf0cc4c732a53b1e3f06b69141276daa0602c645

[root@echohye ~]# docker images
REPOSITORY                                       TAG        IMAGE ID       CREATED         SIZE
mycentos                                         1.1        409b137b25d9   4 seconds ago   381MB
registry.cn-hangzhou.aliyuncs.com/echohye/test   1.0        8ff2df30dfcc   2 hours ago     559MB
registry                                         latest     b8604a3fe854   9 months ago    26.2MB
hello-world                                      latest     feb5d9fea6a5   10 months ago   13.3kB
centos                                           7.9.2009   eeb6ee3f44bd   11 months ago   204MB
centos                                           latest     5d0da3dc9764   11 months ago   231MB

5.curl验证私服库上有什么镜像

[root@echohye ~]# curl -X GET http://127.0.0.1:5000/v2/_catalog
{"repositories":[]}

6.将新镜像mycentos:1.1修改成符号私服规范的Tag

公式:docker tag 镜像:Tag Host:Port/Repository:Tag

[root@echohye ~]# docker tag mycentos:1.1 127.0.0.1:5000/mycentos:1.1

[root@echohye ~]# docker images
REPOSITORY                                       TAG        IMAGE ID       CREATED          SIZE
127.0.0.1:5000/mycentos                           1.1        409b137b25d9   15 minutes ago   381MB
mycentos                                         1.1        409b137b25d9   15 minutes ago   381MB
registry.cn-hangzhou.aliyuncs.com/echohye/test   1.0        8ff2df30dfcc   3 hours ago      559MB
registry                                         latest     b8604a3fe854   9 months ago     26.2MB
hello-world                                      latest     feb5d9fea6a5   10 months ago    13.3kB
centos                                           7.9.2009   eeb6ee3f44bd   11 months ago    204MB
centos                                           latest     5d0da3dc9764   11 months ago    231MB

7.更改配置文件，使之支持http

[root@echohye ~]# cat /etc/docker/daemon.json
{
  "registry-mirrors": ["https://cgoiq7v4.mirror.aliyuncs.com"]
}

[root@echohye ~]# vim /etc/docker/daemon.json

[root@echohye ~]# cat /etc/docker/daemon.json
{
  "registry-mirrors": ["https://cgoiq7v4.mirror.aliyuncs.com"],
  "insecure-registries":["127.0.0.1:5000"]
}

[root@echohye ~]# systemctl restart docker

[root@echohye ~]# docker ps
CONTAINER ID   IMAGE     COMMAND   CREATED   STATUS    PORTS     NAMES

[root@echohye ~]# docker run -d -p 5000:5000 -v /echohye/:/tmp/registry --privileged=true registry
05b9757555cdb494340fd760a0bfa12203e8d4cb62ecf5215ebb798d2c5292d2

[root@echohye ~]# docker ps
CONTAINER ID   IMAGE      COMMAND                  CREATED         STATUS         PORTS                                       NAMES
05b9757555cd   registry   "/entrypoint.sh /etc…"   6 seconds ago   Up 5 seconds   0.0.0.0:5000->5000/tcp, :::5000->5000/tcp   hungry_ganguly

8.push推送到私服库

[root@echohye ~]# docker push 127.0.0.1:5000/mycentos:1.1
The push refers to repository [127.0.0.1:5000/mycentos]
f10afec81581: Pushed
174f56854903: Pushed
1.1: digest: sha256:14f79ad79a364acabb42fee033373adc2355cbd7dbcc54be0d45d9b58c136dde size: 741


[root@echohye docker]# curl -X GET http://127.0.0.1:5000/v2/_catalog
{"repositories":["mycentos"]}

删除本地的该镜像

9.pull到本地镜像

[root@echohye docker]# docker pull 127.0.0.1:5000/mycentos:1.1
1.1: Pulling from mycentos
2d473b07cdd5: Already exists
45f728a977da: Pull complete
Digest: sha256:14f79ad79a364acabb42fee033373adc2355cbd7dbcc54be0d45d9b58c136dde
Status: Downloaded newer image for 127.0.0.1:5000/mycentos:1.1
127.0.0.1:5000/mycentos:1.1

[root@echohye docker]# docker images
REPOSITORY                                       TAG        IMAGE ID       CREATED         SIZE
127.0.0.1:5000/mycentos                          1.1        409b137b25d9   2 hours ago     381MB
registry.cn-hangzhou.aliyuncs.com/echohye/test   1.0        8ff2df30dfcc   5 hours ago     559MB
registry                                         latest     b8604a3fe854   9 months ago    26.2MB
hello-world                                      latest     feb5d9fea6a5   10 months ago   13.3kB
centos                                           7.9.2009   eeb6ee3f44bd   11 months ago   204MB

参考文章

https://www.cnblogs.com/bowendown/p/12623756.html
https://blog.csdn.net/weixin_45829957/article/details/120318724
https://blog.csdn.net/MLLeo/article/details/117398234

posted @   槑孒  阅读(189)  评论(0)  编辑  收藏  举报
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