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HTTPConnectionPool(host='', port=8774): Max retries exceeded with url: /v2/70a04e8259b04717bf1bdd4faaedbc0c/extensions (Caused by <class 'socket.error'>: [Errno 111] Connection refused)

asked 2014-01-05 10:33:38 -0600

www gravatar image

updated 2014-01-22 15:12:43 -0600

Evgeny gravatar image

I've got the following error while trying to connect to the dashboard: HTTPConnectionPool(host='', port=8774): Max retries exceeded with url: /v2/70a04e8259b04717bf1bdd4faaedbc0c/extensions (Caused by <class 'socket.error'="">: [Errno 111] Connection refused) could anybody explain it to me please?</class>

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Can you check compute service is up ? Can you try telnet 8774. Does this work ?

dheeru gravatar imagedheeru ( 2014-01-05 11:08:05 -0600 )edit

no, it does not. knwing that I am using devstack.

www gravatar imagewww ( 2014-01-05 11:59:12 -0600 )edit

Compute should be up right ? If not up, it will surely give the above problem. Please restart all your services and try again.

dheeru gravatar imagedheeru ( 2014-01-05 21:34:38 -0600 )edit

I got same error. I see that in all openstack based service include /etc/"service"/"service.conf". in which one line "connection = ..." In section [database]. if you forgot to update it to correct. you will get same error. so always first check it.

hk gravatar imagehk ( 2016-06-26 15:29:10 -0600 )edit

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answered 2014-01-08 13:28:00 -0600

www gravatar image

actually I discovered that the problem was due to the size of the RAM of the VM. In fact, when I increased it everything worked ordinarly. Thank you.

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How much memory, I give controller node 1.2G memory, or report this error.just running keystone,glance and nova

Livenux Chou gravatar imageLivenux Chou ( 2014-04-26 04:46:40 -0600 )edit

I used to use 1GB. But after getting into trouble with MySQL and this. I safely give my VM 1.5GB of memory.

Kashyap Kopparam gravatar imageKashyap Kopparam ( 2014-06-06 05:57:56 -0600 )edit

thank you it's work to me i use 4GB for ram before that it's 3GB

RezaER gravatar imageRezaER ( 2015-01-25 05:18:34 -0600 )edit

answered 2015-01-05 03:29:22 -0600

frippe75 gravatar image

updated 2015-01-05 03:30:44 -0600

It most likely due to having to little memory, check requirements on devstack dot org

I guess it all boils down to the OOM implementation of Linux. It's Linux handling out-of-memory situations. nova-api process is being killed. See console or grep messages for "killed process"

The behaviour can be altered. Read up by googling "OOM killer"

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answered 2014-12-12 07:21:22 -0600

Venu Murthy gravatar image

Ok, in my case, while I am trying this on Ubuntu 14.04 and Juno on the below command I would get the status as below and the logs were frozen.

service nova-api start

nova-api stop/waiting

For some strange reason nova-api had gone missing, reinstalling it fixed the problem.

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answered 2014-01-06 05:07:08 -0600

unmesh-gurjar gravatar image

Ensure that your nova-api service is running on host having IP and is listening on port 8774.

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if it is not the case, what should I do?

www gravatar imagewww ( 2014-01-06 16:16:18 -0600 )edit

You need to check for the nova-api service logs (devstack defaults to /var/log/nova/api.log) to determine the cause of service start up failure. Paste the logs onto and provide the link here if you need help in tracking down the issue.

unmesh-gurjar gravatar imageunmesh-gurjar ( 2014-01-06 23:30:47 -0600 )edit

Hi! I have the same problem as yours. I use my laptop as host platform to install OpenStack via devstack and meet the same problem as yours. Did you mean if you increase the size of your host machine memory, then the problem will be solved? Thanks!

gavingo15 gravatar imagegavingo15 ( 2014-01-08 20:42:39 -0600 )edit

Yes @gavingo

www gravatar imagewww ( 2014-01-09 15:27:32 -0600 )edit

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Asked: 2014-01-05 10:33:38 -0600

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Last updated: Jan 05 '15