Openshift 之 Docker Registry

自行开发的app, 如果没有从source code build 到openshift, 那么我们可以用Dockerfile自行打包images， 并存放到openshift 具体的project中去部署使用。
例如：

下面记录下具体步骤：

# oc get svc -n default

NAME              TYPE        CLUSTER-IP       EXTERNAL-IP   PORT(S)                  AGE

docker-registry    ClusterIP  172.30.235.48            5000/TCP                  35d

上面可以查询到具体的docker registry name以及ip.

用docker login连接到该pod：

# docker login docker-registry.default.svc:5000

Username: user.id  

Password: [登陆openshift的串码]

Login Succeeded

接下来就可以push image到具体的project里了:

 To push an image to this image stream:
$ sudo docker tag myimage registry/myproject/myimage:tag
$ sudo docker push registry/myproject/myimage:tag

下面是个真实范例：

# docker tag cas-svc:1.0.0 docker-registry.default.svc:5000/demo-project/cas-svc:1.0.0

# docker push docker-registry.default.svc:5000/demo-project/cas-svc:1.0.0 
The push refers to a repository [docker-registry.default.svc:5000/demo-project/cas-svc]
638735aba39b: Pushed 
4ffb2c49a619: Pushed 
e33af80de3fe: Pushed 
79fe6d0e931d: Pushed 
685fdd7e6770: Pushed 
c9b26f41504c: Pushed 
cd7100a72410: Pushed 
1.0.0: digest: sha256:67c018604ad33d420e79c20a3f40e77b0fabe610f2cf2ead86217c0ff7655a27 size: 1782