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nova compute node can't connect to controller. Controller not reachable error.

asked 2016-05-19 02:10:15 -0600

hvanschaick gravatar image

updated 2016-05-22 05:44:54 -0600

I am following the installation procedure for Mitaka on Redhat/Centos on Centos 7.

The controller is listening on 5672 and rabbitmq is running on it. "ping compute1" from controller node works and "ping" from compute1 to controller works....

Nothing in the rabbitmq log file on host. The problem seems to be in oslo module on compute1...

Everything went fine up to the point but now I am stuck on the installation on the compute node...

verified the rabbitmq password. which should be fine. (I would expect something in the rabbitmq log if there is a password problem... Just to be sure I added an iptables rule on controller to accept all on 5672, but no difference.. (The error indicated on the compute node seems a local problem on the compute node...)

Tried replacing the "controller" name in nova configuration to 10.0.0.11 but no difference... The error on compute 1 shows that it cannot reach controller:5672 or 10.0.0.11:5672, so it interprets the configuration correctly...

This is the log on compute1:

2016-05-22 13:40:06.207 1413 WARNING oslo_reports.guru_meditation_report [-] Guru mediation now registers SIGUSR1 and SIGUSR2 by default for backward compatibility. SIGUSR1 will no longer be registered in a future release, so please use SIGUSR2 to generate reports. 2016-05-22 13:40:06.312 1413 INFO oslo_service.periodic_task [-] Skipping periodic task _periodic_update_dns because its interval is negative 2016-05-22 13:40:06.317 1413 INFO nova.virt.driver [-] Loading compute driver 'libvirt.LibvirtDriver' 2016-05-22 13:40:06.382 1413 INFO os_brick.initiator.connector [-] Init DISCO connector 2016-05-22 13:40:06.392 1413 ERROR oslo.messaging._drivers.impl_rabbit [req-cb4e0605-565d-4176-8bb7-5e75c39359c5 - - - - -] AMQP server on controller:5672 is unreachable: [Errno 113] EHOSTUNREACH. Trying again in 1 seconds. 2016-05-22 13:40:07.398 1413 ERROR oslo.messaging._drivers.impl_rabbit [req-cb4e0605-565d-4176-8bb7-5e75c39359c5 - - - - -] AMQP server on controller:5672 is unreachable: [Errno 113] EHOSTUNREACH. Trying again in 2 seconds. 2016-05-22 13:40:09.405 1413 ERROR oslo.messaging._drivers.impl_rabbit [req-cb4e0605-565d-4176-8bb7-5e75c39359c5 - - - - -] AMQP server on controller:5672 is unreachable: [Errno 113] EHOSTUNREACH. Trying again in 4 seconds. 2016-05-22 13:40:13.414 1413 ERROR oslo.messaging._drivers.impl_rabbit [req-cb4e0605-565d-4176-8bb7-5e75c39359c5 - - - - -] AMQP server on controller:5672 is unreachable: [Errno 113] EHOSTUNREACH. Trying again in 6 seconds. ...

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answered 2016-05-22 05:54:11 -0600

hvanschaick gravatar image

As indicated by user luci in another thread referring to nova compute error 113: Stopping iptables service and flushing iptables on the controller host resolved the issue.

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Asked: 2016-05-19 02:10:15 -0600

Seen: 1,212 times

Last updated: May 22 '16