openstack api
1,Identity service generates authentication tokens that permit access to the openstack service REST APIs,clients obtain this token and the URL catelog endpoints for other service APIs by supplying their valid credentials to the authentication service 获取token;2,Each time you make a REST API request to an openstack service, you supply you authentication token in the X-Auth-Token request header 在X-Auth-Token使用上面获取的tokens;3,openstack Identity protect its APIs by defining policy rules based on a role...