6.7. 使用镜像流

以下小节介绍了如何使用镜像流和镜像流标签。

6.7.1. 获取有关镜像流的信息

您可获取有关镜像流的常规信息及其指向的所有标签的详细信息。

流程

  • 获取有关镜像流的常规信息及其指向的所有标签的详细信息： 

    $ oc describe is/<image-name>

    例如： 

    $ oc describe is/python

    输出示例

    Name:			python
Namespace:		default
Created:		About a minute ago
Labels:			<none>
Annotations:		openshift.io/image.dockerRepositoryCheck=2017-10-02T17:05:11Z
Docker Pull Spec:	docker-registry.default.svc:5000/default/python
Image Lookup:		local=false
Unique Images:		1
Tags:			1

3.5
  tagged from centos/python-35-centos7

  * centos/python-35-centos7@sha256:49c18358df82f4577386404991c51a9559f243e0b1bdc366df25
      About a minute ago

  • 获取有关特定镜像流标签的所有可用信息： 

    $ oc describe istag/<image-stream>:<tag-name>

    例如： 

    $ oc describe istag/python:latest

    输出示例

    Image Name:	sha256:49c18358df82f4577386404991c51a9559f243e0b1bdc366df25
Docker Image:	centos/python-35-centos7@sha256:49c18358df82f4577386404991c51a9559f243e0b1bdc366df25
Name:		sha256:49c18358df82f4577386404991c51a9559f243e0b1bdc366df25
Created:	2 minutes ago
Image Size:	251.2 MB (first layer 2.898 MB, last binary layer 72.26 MB)
Image Created:	2 weeks ago
Author:		<none>
Arch:		amd64
Entrypoint:	container-entrypoint
Command:	/bin/sh -c $STI_SCRIPTS_PATH/usage
Working Dir:	/opt/app-root/src
User:		1001
Exposes Ports:	8080/tcp
Docker Labels:	build-date=20170801

注意

输出的信息多于显示的信息。