openstack-glance API 镜像管理的部分实现和例子，openstackglance

openstack-glance API 镜像管理的部分实现和例子，openstackglance

Openstack-glance API

为了方便，可先自定义一个函数 放在credentials.py里面

# vi credentials.py

#!/usr/bin/env python

import os

def get_keystone_creds():

   d = {}

   d['username'] =os.environ['OS_USERNAME']

   d['password'] =os.environ['OS_PASSWORD']

   d['auth_url'] =os.environ['OS_AUTH_URL']

   d['tenant_name'] = os.environ['OS_TENANT_NAME']

   return d

def get_nova_creds():

   d = {}

   d['username'] =os.environ['OS_USERNAME']

   d['api_key'] =os.environ['OS_PASSWORD']

   d['auth_url'] =os.environ['OS_AUTH_URL']

   d['project_id']= os.environ['OS_TENANT_NAME']

   return d

 

使用API时

import keystoneclient.v2_0.client as ksclient

import glanceclient

import glanceclient.v2.client as glclient

from credentials import get_keystone_creds

 

（1）查询虚拟机信息  

images = glance.images.list() 获取img的队列

images.next() 依次输出

部分代码：

creds = get_keystone_creds()

keystone = ksclient.Client(**creds)

glance_endpoint=keystone.service_catalog.url_for(service_type='image',endpoint_type='publicURL')

glance = glclient.Client(glance_endpoint,token=keystone.auth_token)

images = glance.images.list()

print images

print images.next()

 

(2)上传img

with open(img_url) as fimage: #img_url 镜像存放路径

          glance.images.create(name="cirros_zy",is_public=True,disk_format="qcow2",container_format="bare",data=fimage)

 

 

部分代码：

keystone = ksclient.Client(**creds)

glance_endpoint=keystone.service_catalog.url_for(service_type='image',endpoint_type='publicURL')

glance=glanceclient.Client('1',glance_endpoint,token=keystone.auth_token)

with open(img_url) as fimage:

glance.images.create(name="cirros_zy",is_public=True,disk_format="qcow2",container_format="bare",data=fimage)

（3）删除img

glance.images.delete(image_id)

 

（4）成员绑定

glance.image_members.create(image_id,mem_id,can_share=True)

 

（5）成员删除

glance.image_members.delete(image_id,mem_id)

 

（6）img下载

   由于glance v2没有支持镜像下载的API 所以直接使用命令行的方式下载

代码如下：

Import os

string_1 = 'glance image-download --file ' + image_url +' ' + image_id  

os.system(string_1)