AccssRefused: (0, 0): (403) ACCESS_REFUSED - Login was refused using authentication mechanism AMQPL
今天装openstack，中途重启下机器，装到nova的时候，无法启动 openstack-nova-compute.service服务。报错如下：
[root@venus nova]# journalctl -xe
-- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel
--
-- Unit openstack-nova-compute.service has begun starting up.
10月 15 11:42:11 venus systemd[1]: openstack-nova-compute.service: main process exited, code=exited, status=1/FAILURE
10月 15 11:42:11 venus systemd[1]: Failed to start OpenStack Nova Compute Server.
-- Subject: Unit openstack-nova-compute.service has failed
-- Defined-By: systemd
-- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel
--
-- Unit openstack-nova-compute.service has failed.
--
-- The result is failed.
10月 15 11:42:11 venus systemd[1]: Unit openstack-nova-compute.service entered failed state.
10月 15 11:42:11 venus systemd[1]: openstack-nova-compute.service failed.
10月 15 11:42:11 venus systemd[1]: openstack-nova-compute.service holdoff time over, scheduling restart.
10月 15 11:42:11 venus systemd[1]: Stopped OpenStack Nova Compute Server.
-- Subject: Unit openstack-nova-compute.service has finished shutting down
-- Defined-By: systemd
-- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel
--
-- Unit openstack-nova-compute.service has finished shutting down.
10月 15 11:42:11 venus systemd[1]: Starting OpenStack Nova Compute Server...
-- Subject: Unit openstack-nova-compute.service has begun start-up
-- Defined-By: systemd
-- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel
--
-- Unit openstack-nova-compute.service has begun starting up.查看nova-computer.log文件
2019-10-15 11:43:08.817 21429 ERROR oslo_service.service self.connection.ensure_connection(errback=on_error)
2019-10-15 11:43:08.817 21429 ERROR oslo_service.service File "/usr/lib/python2.7/site-packages/kombu/connection.py", line 405, in ensure_connection
2019-10-15 11:43:08.817 21429 ERROR oslo_service.service callback)
2019-10-15 11:43:08.817 21429 ERROR oslo_service.service File "/usr/lib/python2.7/site-packages/kombu/utils/functional.py", line 332, in retry_over_time
2019-10-15 11:43:08.817 21429 ERROR oslo_service.service return fun(*args, **kwargs)
2019-10-15 11:43:08.817 21429 ERROR oslo_service.service File "/usr/lib/python2.7/site-packages/kombu/connection.py", line 261, in connect
2019-10-15 11:43:08.817 21429 ERROR oslo_service.service return self.connection
2019-10-15 11:43:08.817 21429 ERROR oslo_service.service File "/usr/lib/python2.7/site-packages/kombu/connection.py", line 802, in connection
2019-10-15 11:43:08.817 21429 ERROR oslo_service.service self._connection = self._establish_connection()
2019-10-15 11:43:08.817 21429 ERROR oslo_service.service File "/usr/lib/python2.7/site-packages/kombu/connection.py", line 757, in _establish_connection
2019-10-15 11:43:08.817 21429 ERROR oslo_service.service conn = self.transport.establish_connection()
2019-10-15 11:43:08.817 21429 ERROR oslo_service.service File "/usr/lib/python2.7/site-packages/kombu/transport/pyamqp.py", line 130, in establish_connection
2019-10-15 11:43:08.817 21429 ERROR oslo_service.service conn.connect()
2019-10-15 11:43:08.817 21429 ERROR oslo_service.service File "/usr/lib/python2.7/site-packages/amqp/connection.py", line 313, in connect
2019-10-15 11:43:08.817 21429 ERROR oslo_service.service self.drain_events(timeout=self.connect_timeout)
2019-10-15 11:43:08.817 21429 ERROR oslo_service.service File "/usr/lib/python2.7/site-packages/amqp/connection.py", line 500, in drain_events
2019-10-15 11:43:08.817 21429 ERROR oslo_service.service while not self.blocking_read(timeout):
2019-10-15 11:43:08.817 21429 ERROR oslo_service.service File "/usr/lib/python2.7/site-packages/amqp/connection.py", line 506, in blocking_read
2019-10-15 11:43:08.817 21429 ERROR oslo_service.service return self.on_inbound_frame(frame)
2019-10-15 11:43:08.817 21429 ERROR oslo_service.service File "/usr/lib/python2.7/site-packages/amqp/method_framing.py", line 55, in on_frame
2019-10-15 11:43:08.817 21429 ERROR oslo_service.service callback(channel, method_sig, buf, None)
2019-10-15 11:43:08.817 21429 ERROR oslo_service.service File "/usr/lib/python2.7/site-packages/amqp/connection.py", line 510, in on_inbound_method
2019-10-15 11:43:08.817 21429 ERROR oslo_service.service method_sig, payload, content,
2019-10-15 11:43:08.817 21429 ERROR oslo_service.service File "/usr/lib/python2.7/site-packages/amqp/abstract_channel.py", line 126, in dispatch_method
2019-10-15 11:43:08.817 21429 ERROR oslo_service.service listener(*args)
2019-10-15 11:43:08.817 21429 ERROR oslo_service.service File "/usr/lib/python2.7/site-packages/amqp/connection.py", line 639, in _on_close
2019-10-15 11:43:08.817 21429 ERROR oslo_service.service (class_id, method_id), ConnectionError)
2019-10-15 11:43:08.817 21429 ERROR oslo_service.service AccessRefused: (0, 0): (403) ACCESS_REFUSED - Login was refused using authentication mechanism AMQPLAIN. For details see the broker logfile.
通过查看反复出现的错误:
AccessRefused: (0, 0): (403) ACCESS_REFUSED - Login was refused using authentication mechanism AMQPLAIN. For details see the broker logfile.解决方法是rabbitmq-server.service服务异常，先使用命令 rabbitmqctl status查看，如果异常输出，就重新安装rabbitmqctl，重新创建用户。如果正常输出，如下：
[root@venus nova]# rabbitmqctl status
Status of node rabbit@venus
[{pid,1989},
{running_applications,
[{rabbit,"RabbitMQ","3.6.16"},
{mnesia,"MNESIA CXC 138 12","4.14.3"},
{ranch,"Socket acceptor pool for TCP protocols.","1.3.2"},
{rabbit_common,
"Modules shared by rabbitmq-server and rabbitmq-erlang-client",
"3.6.16"},
{xmerl,"XML parser","1.3.14"},
{ssl,"Erlang/OTP SSL application","8.1.3.1"},
{os_mon,"CPO CXC 138 46","2.4.2"},
{compiler,"ERTS CXC 138 10","7.0.4.1"},
{public_key,"Public key infrastructure","1.4"},
{crypto,"CRYPTO","3.7.4"},
{syntax_tools,"Syntax tools","2.1.1"},
{asn1,"The Erlang ASN1 compiler version 4.0.4","4.0.4"},
{recon,"Diagnostic tools for production use","2.3.2"},
{sasl,"SASL CXC 138 11","3.0.3"},
{stdlib,"ERTS CXC 138 10","3.3"},
{kernel,"ERTS CXC 138 10","5.2"}]},
{os,{unix,linux}},
{erlang_version,
"Erlang/OTP 19 [erts-8.3.5.3] [source] [64-bit] [smp:32:32] [async-threads:512] [hipe] [kernel-poll:true]\n"},
{memory,
[{connection_readers,2772584},
{connection_writers,156680},
{connection_channels,794696},
{connection_other,5333856},
则只需要重新创新用户，如果出现这个错误就是rabbitmq服务的事情。