[openstack-dev] [zun] Failed to create Container

Jacob Burckhardt jburckhardt at pdvwireless.com
Wed Nov 21 00:44:09 UTC 2018

Your error message says it cannot connect to port 23750.  That's the kuryr-libnetwork default listen port.  On, run:

lsof -iTCP -sTCP:LISTEN -P

On my compute node, it outputs:

kuryr-ser 1976        root    6u  IPv4  30896      0t0  TCP localhost:23750 (LISTEN)

So, you can see that kuryr is listening on 23750.  If lsof does not list a process listening on 23750, then check if kuryr is up by running:

systemctl status kuryr-libnetwork

You can also try restarting it by running:

systemctl restart kuryr-libnetwork

I installed that service by following:


That is the queens install guide which might help you since zun has no install guide in pike.

If you see it listening, you can try this command:

telnet 23750

If it fails to connect, then try:

telnet localhost 23750

If it works with localhost but not, then I think that means you need to tell docker to connect to localhost instead of

Can you get the commands at the following web page to succeed?


Jacob Burckhardt
Senior Software Engineer

From: Rania Adouni <raniaadouni at gmail.com>
Sent: Tuesday, November 20, 2018 2:02 PM
To: openstack-dev at lists.openstack.org
Subject: [openstack-dev] [zun] Failed to create Container


Hi ,

I am starting to use zun on openstack pike , and when I try to lunch container with cirros image , I get this reason : Docker internal error: 500 Server Error: Internal Server Error ("legacy plugin: Post dial tcp<>: connect: connection refused").
you can find here the log on my compute node :https://pastebin.com/nZTiTZiV.
some help with this will be great .
Best Regards,
Rania Adouni

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