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I can not access to the instance console

I 've created an instance, but when i want to start console it show this error: Something went wrong, connection is closed logs=> /var/log/cinder/volume.log 2020-04-14 10:48:52.129 32431 WARNING cinder.volume.targets.lio [req-dec07d2d-f8d3-4788-b5c3-df245c0b4fe5 384905be84ed4736875440f9eeb34b74 257decaf5dfe41048101b008f9cece24 - default default] Failed to save iscsi LIO configuration when modifying volume id: volume-cacbcd7c-03ab-4cd6-acb1-4b0f1d4647be.: ProcessExecutionError: Unexpected error while running command. * /var/log/nova/nova-novncproxy.log *2020-04-14 23:30:53.413 17692 INFO nova.console.websocketproxy [req-ae070035-5661-4469-96a7-112d83432f8a - - - - -] 45: connect info: ConsoleAuthToken(access_url_base='http://192.168.4.95:6080/vnc_auto.html',console_type='novnc',created_at=2020-04-14T19:00:49Z,host='a',id=19,instance_uuid=94b02eb3-f2b6-4800-b9fb-6ec69a591ac2,internal_access_path=None,port=5900,token='',updated_at=None) 2020-04-14 23:30:53.422 17692 INFO nova.console.websocketproxy [req-ae070035-5661-4469-96a7-112d83432f8a - - - - -] 45: connecting to: a:5900 2020-04-14 23:30:54.185 17692 INFO nova.console.websocketproxy [req-ae070035-5661-4469-96a7-112d83432f8a - - - - -] handler exception: [Errno -2] No address found 2020-04-14 23:31:11.355 17690 INFO nova.console.websocketproxy [-] 192.168.4.165: ignoring empty handshake *

os:centos7 I installed packstack on centos 7

I can not access to the instance console

I 've created an instance, but when i want to start console it show this error: Something went wrong, connection is closed logs=> /var/log/cinder/volume.log

/var/log/nova/nova-novncproxy.log 2020-04-14 10:48:52.129 32431 WARNING cinder.volume.targets.lio [req-dec07d2d-f8d3-4788-b5c3-df245c0b4fe5 384905be84ed4736875440f9eeb34b74 257decaf5dfe41048101b008f9cece24 - default default] Failed to save iscsi LIO configuration when modifying volume id: volume-cacbcd7c-03ab-4cd6-acb1-4b0f1d4647be.: ProcessExecutionError: Unexpected error while running command. * /var/log/nova/nova-novncproxy.log *2020-04-14 23:30:53.413 17692 INFO nova.console.websocketproxy [req-ae070035-5661-4469-96a7-112d83432f8a - - - - -] 45: connect info: ConsoleAuthToken(access_url_base='http://192.168.4.95:6080/vnc_auto.html',console_type='novnc',created_at=2020-04-14T19:00:49Z,host='a',id=19,instance_uuid=94b02eb3-f2b6-4800-b9fb-6ec69a591ac2,internal_access_path=None,port=5900,token='',updated_at=None) 2020-04-14 23:30:53.422 17692 INFO nova.console.websocketproxy [req-ae070035-5661-4469-96a7-112d83432f8a - - - - -] 45: 2020-04-18 10:11:58.438 1949 INFO nova.console.websocketproxy [req-2c906838-6f36-41b8-9485-5185d40f7c06 - - - - -] 64: connecting to: a:5900 2020-04-14 23:30:54.185 17692 INFO nova.console.websocketproxy [req-ae070035-5661-4469-96a7-112d83432f8a 2020-04-18 10:11:58.682 1949 INFO nova.console.websocketproxy [req-2c906838-6f36-41b8-9485-5185d40f7c06 - - - - -] handler exception: [Errno -2] No address found 2020-04-14 23:31:11.355 17690 2020-04-18 10:11:59.971 1941 INFO nova.console.websocketproxy [-] 192.168.4.165: ignoring socket not ready 2020-04-18 10:11:59.978 1942 INFO nova.console.websocketproxy [-] 192.168.4.165: ignoring socket not ready 2020-04-18 10:12:16.197 1944 INFO nova.console.websocketproxy [-] 192.168.4.165: ignoring empty handshake 2020-04-18 10:12:16.197 1940 INFO nova.console.websocketproxy [-] 192.168.4.165: ignoring empty handshake 2020-04-18 10:12:16.197 1943 INFO nova.console.websocketproxy [-] 192.168.4.165: ignoring empty handshake 2020-04-18 10:25:47.520 4096 INFO nova.console.websocketproxy [-] 192.168.4.165 - - [18/Apr/2020 10:25:47] 192.168.4.165: Plain non-SSL (ws://) WebSocket connection 2020-04-18 10:25:47.523 4096 INFO nova.console.websocketproxy [-] 192.168.4.165 - - [18/Apr/2020 10:25:47] 192.168.4.165: Version hybi-13, base64: 'False' 2020-04-18 10:25:47.523 4096 INFO nova.console.websocketproxy [-] 192.168.4.165 - - [18/Apr/2020 10:25:47] 192.168.4.165: Path: '/?token=99d7b1a0-c31b-4216-a33c-87c2de2a4563' 2020-04-18 10:25:48.366 4096 INFO nova.console.websocketproxy [req-289d9aaa-1da8-4e4a-b5ee-4151dc1598fd - - - - -] 71: connect info: ConsoleAuthToken(access_url_base='http://192.168.4.95:6080/vnc_auto.html',console_type='novnc',created_at=2020-04-18T05:55:45Z,host='a',id=25,instance_uuid=bdf62b4f-fa6e-497d-ab8b-cd6af50f4bc0,internal_access_path=None,port=5902,token='',updated_at=None) 2020-04-18 10:25:48.369 4096 INFO nova.console.websocketproxy [req-289d9aaa-1da8-4e4a-b5ee-4151dc1598fd - - - - -] 71: connecting to: a:5902 2020-04-18 10:25:48.603 4096 INFO nova.console.websocketproxy [req-289d9aaa-1da8-4e4a-b5ee-4151dc1598fd - - - - -] handler exception: [Errno -2] No address found 2020-04-18 10:25:50.002 4092 INFO nova.console.websocketproxy [-] 192.168.4.165: ignoring socket not ready 2020-04-18 10:25:50.010 4093 INFO nova.console.websocketproxy [-] 192.168.4.165: ignoring socket not ready 2020-04-18 10:25:50.025 4095 INFO nova.console.websocketproxy [-] 192.168.4.165: ignoring socket not ready 2020-04-18 10:26:06.728 4094 INFO nova.console.websocketproxy [-] 192.168.4.165: ignoring empty handshake 2020-04-18 10:26:06.728 4091 INFO nova.console.websocketproxy [-] 192.168.4.165: ignoring empty handshake 2020-04-18 10:48:24.536 7634 INFO nova.console.websocketproxy [-] 192.168.4.165 - - [18/Apr/2020 10:48:24] 192.168.4.165: Plain non-SSL (ws://) WebSocket connection 2020-04-18 10:48:24.541 7634 INFO nova.console.websocketproxy [-] 192.168.4.165 - - [18/Apr/2020 10:48:24] 192.168.4.165: Version hybi-13, base64: 'False' 2020-04-18 10:48:24.543 7634 INFO nova.console.websocketproxy [-] 192.168.4.165 - - [18/Apr/2020 10:48:24] 192.168.4.165: Path: '/?token=0bfe933e-7e36-48a8-b01f-7c991785a6bc' 2020-04-18 10:48:25.488 7634 INFO nova.console.websocketproxy [req-98193a2e-dd25-4268-9970-a812d7fc4364 - - - - -] 78: connect info: ConsoleAuthToken(access_url_base='http://192.168.4.95:6080/vnc_auto.html',console_type='novnc',created_at=2020-04-18T06:18:21Z,host='a',id=26,instance_uuid=bdf62b4f-fa6e-497d-ab8b-cd6af50f4bc0,internal_access_path=None,port=5902,token='*',updated_at=None) 2020-04-18 10:48:25.490 7634 INFO nova.console.websocketproxy [req-98193a2e-dd25-4268-9970-a812d7fc4364 - - - - -] 78: connecting to: a:5902 2020-04-18 10:48:26.060 7634 INFO nova.console.websocketproxy [req-98193a2e-dd25-4268-9970-a812d7fc4364 - - - - -] handler exception: [Errno -2] No address found *

os:centos7 I installed packstack on centos 7