docker仓库管理

/* 
    从官网下载的镜像，因为官网是在国外，所以要下载使用的话，不方便

所以就要建立一个本地的docker仓库

容器中的网络和宿主机的网络是不相关的。

但是如果从外面去访问容器是无法访问的，所以要利用-p来对端口映射
 --5000:5000 左边是宿主机的端口，右边是容器的端口
*/

[root@localhost ~]# docker pull registry
//registry为docker官方的一个镜像，用它来创建本地的docker私有仓库
latest: Pulling from registry

9b7301678506: Pull complete
d912f6ed534e: Pull complete
664daba008e5: Pull complete
33e9a84661e7: Pull complete
5366f93a80af: Pull complete
8d1f9ff6843f: Pull complete
79a50c6b6f41: Pull complete
94c689ffd50b: Pull complete
ad8da6d14f6d: Pull complete
Digest: sha256:ebe6779a71971307f9577a2f172c2f24cf8b37bb7e22a076f47a9df4dcdcc625
Status: Downloaded newer image for registry:latest

//以registry镜像启动容器，监听5000端口
[root@localhost ~]# docker run -d -p 5000:5000 registry
6ce6bc5b805600d86057cc45de27d5cedc1fdc2224def5115ed376c5fb464a99
[root@localhost ~]# curl 127.0.0.1:5000       //访问


//把镜像上传到私有仓库
[root@localhost ~]# docker tag frankie_test 192.168.216.129:5000/centos 

/*     对tag进行标记

        并带着私有仓库的 ip：port
*/

 

 

此处出现错误如下：

解决方法：

[root@localhost ~]# docker push 192.168.216.129:5000/centos
//报错类似如下
Error response from daemon: invalid registry endpoint https://192.168.216.129:5000/v0/:unable to ping registry endpoint https://192.168.216.129:5000/v0/v2 ping attempt failed with error: Get https://192.168.216.129:5000/v2/: EOF v1 ping attempt failed with error: Get https://192.168.216.129:5000/v1/_ping: EOF, If this private registry supports only HTTP or HTTPS with an unknown CA certificate,please add `--insecure-registry 192.168.216.129:5000` to the daemon's arguments. In the case of HTTPS, if you have access to the registry's CA certificate, no need for the flag; simply place the CA certificate at /etc/docker/certs.d/192.168.216.129:5000/ca.crt

-->
这是因为Docker从1.3.X之后，与docker registry交互默认使用的时https，然后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。

[root@localhost ~]# vi /etc/init.d/docker
//change
$exec -d $other_args  --> change to 
-->$exec -d --insecure-registry 192.168.216.129:5000 $other_args
[root@localhost ~]# /etc/init.d/docker restart
[root@localhost ~]# docker start registry_container_id
//查看私有仓库里的所有镜像
[root@localhost ~]# curl http://192.168.216.129:5000/v1/search