作为 admin 用户，请求认证令牌，输入如下命令

openstack --os-auth-url http://controller:35357/v3 --os-project-domain-name default --os-user-domain-name default --os-project-name admin --os-username admin token issue

 报错

Failed to discover available identity versions when contacting http://controller:35357/v3. Attempting to parse version from URL.

Unable to establish connection to http://controller:35357/v3/auth/tokens: HTTPConnectionPool(host='controller', port=35357): Max retries exceeded with url: /v3/auth/tokens (Caused by NewConnectionError('<urllib3.connection.HTTPConnection object at 0x7fc875a07ad0>: Failed to establish a new connection: [Errno 111] \xe6\x8b\x92\xe7\xbb\x9d\xe8\xbf\x9e\xe6\x8e\xa5',))

 解决方法：

（1）确保35357端口处于开启，被监听状态

netstat -anpt | grep 35357

如果没反应，说明需要进行配置httpd文件

（2）设置vim /etc/httpd/conf.d/wsgi-keystone.conf文件 

Listen 5000

Listen 35357

<VirtualHost *:5000>

WSGIDaemonProcess keystone-public processes=5 threads=1 user=keystone group=keystone display-name=%{GROUP}

WSGIProcessGroup keystone-public

WSGIScriptAlias / /usr/bin/keystone-wsgi-public

WSGIApplicationGroup %{GLOBAL}

WSGIPassAuthorization On

LimitRequestBody 114688

<IfVersion >= 2.4>

ErrorLogFormat "%{cu}t %M"

</IfVersion>

ErrorLog /var/log/httpd/keystone.log

CustomLog /var/log/httpd/keystone_access.log combined

<Directory /usr/bin>

<IfVersion >= 2.4>

Require all granted

</IfVersion>

<IfVersion < 2.4>

Order allow,deny

Allow from all

</IfVersion>

</Directory>

</VirtualHost>

<VirtualHost *:35357>

WSGIDaemonProcess keystone-admin processes=5 threads=1 user=keystone group=keystone display-name=%{GROUP}

WSGIProcessGroup keystone-admin

WSGIScriptAlias / /usr/bin/keystone-wsgi-admin

WSGIApplicationGroup %{GLOBAL}

WSGIPassAuthorization On

ErrorLogFormat "%{cu}t %M"

ErrorLog /var/log/httpd/keystone-error.log

CustomLog /var/log/httpd/keystone-access.log combined

<Directory /usr/bin>

Require all granted

</Directory>

</VirtualHost>

Alias /identity /usr/bin/keystone-wsgi-public

<Location /identity>

SetHandler wsgi-script

Options +ExecCGI

WSGIProcessGroup keystone-public

WSGIApplicationGroup %{GLOBAL}

WSGIPassAuthorization On

</Location>

 （3）重启httpd服务

systemctl restart httpd

 （4）运行成功

[root@controller ~]# openstack --os-auth-url http://controller:35357/v3 --os-project-domain-name default --os-user-domain-name default --os-project-name admin --os-username admin token issue

Password:

Password:

+------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+

| Field | Value |

+------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+

| expires | 2022-02-14T09:47:09+0000 |

| id | gAAAAABiChcNesjAgY49fUVluR6JuIcpH4AwHg_HPpEj3fDvjAN-8Sf8FEBihWvmD3LdK0DntAE1oVPrxt9nMv8iMhFUmBJf6tK66Z9j3dFlWwRaYeXqNyCaLW3aCCs-QWJShvPDVNmAaoE4ShQE9LAHdmLgtvV-uZ7_yd9sQgZ2k_FJ1nLpBIo |

| project_id | ee62b9492b31491bb04337f197127593 |

| user_id | e2bcb60b961045c1ba67a7796f0ed981 |

+------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+