openstack T版 连接控制台报错，请求解决！

Question

2021-11-25 16:52:30.293 20120 ERROR nova.console.websocketproxy [req-91d86cd6-8971-43c5-a55d-e7e220095cbe - - - - -] Unable to perform security proxying, shutting down connection: SecurityProxyNegotiationFailed: Failed to negotiate security type with server: No compute auth available: No matching auth scheme: allowed types: 'AuthType.NONE', desired types: '2'
2021-11-25 16:52:30.293 20120 ERROR nova.console.websocketproxy Traceback (most recent call last):
2021-11-25 16:52:30.293 20120 ERROR nova.console.websocketproxy File "/usr/lib/python2.7/site-packages/nova/console/websocketproxy.py", line 257, in new_websocket_client
2021-11-25 16:52:30.293 20120 ERROR nova.console.websocketproxy tsock = self.server.security_proxy.connect(tenant_sock, tsock)
2021-11-25 16:52:30.293 20120 ERROR nova.console.websocketproxy File "/usr/lib/python2.7/site-packages/nova/console/securityproxy/rfb.py", line 173, in connect
2021-11-25 16:52:30.293 20120 ERROR nova.console.websocketproxy reason=_("No compute auth available: %s") % six.text_type(e))
2021-11-25 16:52:30.293 20120 ERROR nova.console.websocketproxy SecurityProxyNegotiationFailed: Failed to negotiate security type with server: No compute auth available: No matching auth scheme: allowed types: 'AuthType.NONE', desired types: '2'
2021-11-25 16:52:30.293 20120 ERROR nova.console.websocketproxy
2021-11-25 16:52:30.294 20120 INFO nova.console.websocketproxy [req-91d86cd6-8971-43c5-a55d-e7e220095cbe - - - - -] handler exception: Failed to negotiate security type with server: No compute auth available: No matching auth scheme: allowed types: 'AuthType.NONE', desired types: '2'

Answer 1

问题起因：
因安全需要给控制台添加密码功能，重启服务后并没有生效，紧接着回退，然后便出现了上述问题。
自己回答一下，捣鼓了半天，后来经过群里的一位老哥指点，找到了问题所在
首先说下思路，当这个报错发生后，
网上说注释掉这两行代码，但我试了并不生效
nova/cmd/novncproxy.py

后来经过排查

想起了当时在最初部署时候，在本地安装vnc服务，并配置了qemu.conf文件中的密码登陆。注释掉后成功的解决了问题。
#vnc_password = "123456"
最后：
qemu.conf配置了密码，虚拟机启动后，虚拟机对应的vnc server的验证类型是2，securityproxy回去获取这个验证类型，但是当前nova还不支持2这个类型，所以就报错了