One 、keystone Identity authentication service

1.1、 Configure user environment variables

1、 Switching users （admin）：source /home/devstack/openrc admin
2、 Get a list of all users ： openstack user list

3、 Get environment variables ：export | grep OS

among ：
OS_AUTH_TYPE=“password” ： “ Password authentication
OS_AUTH_URL=“http://172.25.0.10/identity” ： keystone Of Ip Address
OS_CACERT=“” ： When keystone Of Ip Address yes http The way to access , If you want to trust this address , You need to add a certificate here , Otherwise, it's time to http After the command want Add --insecre, On behalf of the http Although it is not trusted , But it can also be used
OS_IDENTITY_API_VERSION=“3” ： keystone Version of
OS_PASSWORD=“trystack” Password for this user
OS_PROJECT_DOMAIN_ID=“default”： Tenant domin Of ID
OS_PROJECT_NAME=“demo” : The name of the current user's tenant
OS_REGION_NAME=“RegionOne”： Multiple regoin Of Openstack share
OS_TENANT_NAME=“demo”
OS_USERNAME=“admin”： user name
OS_USER_DOMAIN_ID=“default”： This user domin Of Id
OS_VOLUME_API_VERSION=“3”