AMQP ERROR

1. AMQP server 無法連線，錯誤訊息中 user openstack 無法登入。

   [root@controller ~]# grep -i error /var/log/nova/nova-scheduler.log 
   
   MessageDeliveryFailure: Unable to connect to AMQP server on controller:5672 after 
   None tries: (0, 0): (403) ACCESS_REFUSED - Login was refused using authentication 
   mechanism AMQPLAIN. For details see the broker logfile.
   
   [root@controller ~]# tail /var/log/rabbitmq/rabbit@controller.log 
   
   =INFO REPORT==== 26-May-2018::20:18:00 ===
   Connection <0.3526.1> (163.17.10.112:45272 -> 163.17.10.112:5672) has a client-provided 
   name: nova-compute:99477:d58489ed-f453-4fc6-b3bb-60334e49cb87
   
   =ERROR REPORT==== 26-May-2018::20:18:00 ===
   Error on AMQP connection <0.3526.1> (163.17.10.112:45272 -> 163.17.10.112:5672, state: starting):
   AMQPLAIN login refused: user 'openstack' - invalid credentials
   
   =INFO REPORT==== 26-May-2018::20:18:00 ===
   closing AMQP connection <0.3526.1> (163.17.10.112:45272 -> 163.17.10.112:5672 - 
   nova-compute:99477:d58489ed-f453-4fc6-b3bb-60334e49cb87)
   

2. rabbitmqctl 列出 user，只有 guest，沒有 openstack。

   [root@controller ~]# rabbitmqctl list_users
   Listing users ...
   guest	[administrator]
   

3. rabbitmqctl 新增 user openstack。

   [root@controller ~]# rabbitmqctl add_user openstack 123qwe
   Creating user "openstack" ...
   [root@controller ~]# rabbitmq list_users
   -bash: rabbitmq: command not found
   [root@controller ~]# rabbitmqctl list_users
   Listing users ...
   openstack	[]
   guest	[administrator]
   

4. 重新啟動 neutron-l3-agent，再查看 log，訊息是 user openstack 拒絕存取。

   [root@controller ~]# systemctl restart neutron-l3-agent.service 
   [root@controller ~]# tail /var/log/rabbitmq/rabbit@controller.log 
   
   =ERROR REPORT==== 26-May-2018::20:23:06 ===
   Error on AMQP connection <0.6189.1> (163.17.10.112:47618 -> 163.17.10.112:5672 - 
   nova-conductor:104133:d627cecc-52f8-47b8-a30c-41d37a474ebd, user: 'openstack', state: opening):
   access to vhost '/' refused for user 'openstack'
   [root@controller ~]# systemctl restart neutron-l3-agent.service 
   [root@controller ~]# tail /var/log/rabbitmq/rabbit@controller.log 
   
   =INFO REPORT==== 26-May-2018::20:23:06 ===
   Connection <0.6189.1> (163.17.10.112:47618 -> 163.17.10.112:5672) has a client-provided 
   name: nova-conductor:104133:d627cecc-52f8-47b8-a30c-41d37a474ebd
   
   =ERROR REPORT==== 26-May-2018::20:23:06 ===
   Error on AMQP connection <0.6189.1> (163.17.10.112:47618 -> 163.17.10.112:5672 - 
   nova-conductor:104133:d627cecc-52f8-47b8-a30c-41d37a474ebd, user: 'openstack', state: opening):
   access to vhost '/' refused for user 'openstack'
   
   =INFO REPORT==== 26-May-2018::20:23:06 ===
   closing AMQP connection <0.6189.1> (163.17.10.112:47618 -> 163.17.10.112:5672 - 
   nova-conductor:104133:d627cecc-52f8-47b8-a30c-41d37a474ebd)
   

5. rabbitmqctl 新增 user openstack 存取權。

   [root@controller ~]# . admin.token 
   [root@controller ~]# rabbitmqctl set_permissions openstack ".*" ".*" ".*"
   Setting permissions for user "openstack" in vhost "/" ...
   

6. 重新啟動 neutron-l3-agent，再查看 log，已正常連線。

   [root@controller ~]# systemctl restart neutron-l3-agent.service 
   [root@controller ~]# tail /var/log/rabbitmq/rabbit@controller.log 
   accepting AMQP connection <0.8705.1> (163.17.10.112:48866 -> 163.17.10.112:5672)
   
   =INFO REPORT==== 26-May-2018::20:25:39 ===
   Connection <0.8705.1> (163.17.10.112:48866 -> 163.17.10.112:5672) has a client-provided 
   name: nova-conductor:106769:310eab3b-768d-43df-981c-6af4d8286e88
   
   =INFO REPORT==== 26-May-2018::20:25:40 ===
   accepting AMQP connection <0.8723.1> (163.17.10.112:48870 -> 163.17.10.112:5672)
   
   =INFO REPORT==== 26-May-2018::20:25:40 ===
   Connection <0.8723.1> (163.17.10.112:48870 -> 163.17.10.112:5672) has a client-provided 
   name: nova-conductor:106771:046fa1d3-4c17-486c-8aed-5b26d84109ed