[Openstack] [neutron] Connection to neutron failed: Maximum attempts reached

Li, Leon Leon.Li2 at emc.com
Fri Oct 18 09:03:31 UTC 2013


Service is running. However it’s not listening port 9696.
/var/log/neutron/server.log is empty.
Any idea?

root at xxxxxx:~# service neutron-server status
neutron-server start/running, process 6926
root at xxxxxx:~# netstat -l |grep 9696
root at xxxxxx:~# telnet 9696
telnet: Unable to connect to remote host: Connection refused
root at xxxxxx:~# tail /var/log/neutron/
dhcp-agent.log       l3-agent.log         metadata-agent.log
dhcp-agent.log.1     l3-agent.log.1       server.log
dhcp-agent.log.2.gz  l3-agent.log.2.gz    server.log.1
dhcp-agent.log.3.gz  l3-agent.log.3.gz
dhcp-agent.log.4.gz  l3-agent.log.4.gz
root at xxxxxx:~# tail /var/log/neutron/server.log
root at xxxxxx:~#


From: Eugene Nikanorov [mailto:enikanorov at mirantis.com]
Sent: 2013年10月12日 17:55
To: Li, Leon
Cc: openstack at lists.openstack.org
Subject: Re: [Openstack] [neutron] Connection to neutron failed: Maximum attempts reached

Can you check that neutron server is actually running?
It should create a listening tcp socket on the port 9696.
Can you also look at Neutron server logs? If there is some misconfiguration and Neutron server fails to start, logs could give a hint about what is wrong.


On Sat, Oct 12, 2013 at 12:34 PM, Li, Leon <Leon.Li2 at emc.com<mailto:Leon.Li2 at emc.com>> wrote:

I’m installing Havana and meet a problem when run command “neutron agent-list”.
root at i2052247:~# neutron agent-list
Connection to neutron failed: Maximum attempts reached
Actually it would have same failure when run any neutron command.
I found bugs https://bugs.launchpad.net/neutron/+bug/1211915 and https://bugs.launchpad.net/nova/+bug/1229475/comments/14. Workaround is “ Forcibly clear connection pool“.
Does anyone know how to clear connection pool on Neutron/Havana?


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