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2015-11-04 13:12:44 -0500 asked a question How do I rename a node in Fuel?

I am using the Fuel CLI. I try this command from the Fuel server:

fuel node --node-id 44 --setname foobar

But the fuel node list command shows that the node with ID 44 retains its old name. I am logged in as root. There is no error message.

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2015-09-30 11:23:48 -0500 asked a question How do I create an image in the dashboard clicking the "Create Image" button causes a failure?

I cannot create an image using the dashboard. I can create new images using Glance from the command line. But in Horizon, as soon as I click the "Create Image" button I get this: "Danger: An error occurred. Please try again later." Horizon is working fine otherwise.

I tried modifying /etc/openstack-dashboard/local_settings.py. I tried using different values for the OPENSTACK_API_VERSIONS. This line was commented out completely. But uncommenting it, trying 2.0 or 3 for identity didn't help. I tried restarting apache after each change.

Deleting an image in the dashboard works. The web log for the dashboard shows the activity with the standard 200 URL return code. The respective web log activity for the failed "Create Image" clicks involves the 500 URL return code. I don't know why the server isn't registering this "Create Image" click.

On the back end of the dashboard server, /var/log/apache2/horizon_access.log is the log file. horizon.log doesn't log activity.

The error that is reproduced in Firefox is the same as Chrome. When "Create Image" is clicked, the user sees a pop-up "Danger: An error occurred. Please try again later." The /var/log/apache2/horizon_access.log shows the activity with a 500 URL return code. The web address in the browser doesn't change http://<ip address="">/horizon/admin/images/.

With IE, there is no pop-up. The user is redirected from the "Images" page to a web page with this URL: http://<ip address="">/horizon/admin/images/create/

IE shows this:

"Something went wrong! An unexpected error has occurred. Try refreshing the page. If that doesn't help, contact your local administrator." The logging in the horizon_access.log shows approximately the same activity with a 500 URL return code.

The /var/log/glance/api.log shows activity when Horizon is bypassed with CLI glance commands. The /var/log/glance/api.log shows activity when an image is deleted via Horizon. The /var/log/glance/api.log file does NOT show activity when someone clicks the "Create Image" image button on the dashboard. The Apache2 horizon_access log shows a response code of 500. From there, I cannot trace another command or any other activity.

Nothing seems to work to create an image in Horizon. What should I do?

2015-09-19 16:36:25 -0500 commented answer What are endpoints?

That was a great link.

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2015-09-19 16:31:52 -0500 asked a question Is network congestion the primary concern when load balancing Glance?

To load balance Glance in OpenStack, the book OpenStack Essentials recommends using a shared storage device. The book describes connecting this device to two different Glance repositories. I see this configuration as potentially balancing network traffic and providing redundancy there. But I see this configuration as not helping read/write demands on the shared device. I would think that load balancing Glance would be mostly important for I/O on the disk of images.

Is the load balancing of network traffic a big concern for Glance (and not disk I/O)?

Perhaps the book presumes the reader to have limited resources and balancing the I/O would involve replication and considerable work to achieve.

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2015-09-04 11:00:26 -0500 commented question How do I ssh to an OpenStack instance?

No, I cannot ping the instance IP. What do you want to know? I have a security group that allows all TCP traffic from any IP address on any port. So I don't see what is blocking the ssh attempt.

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2015-09-03 17:52:35 -0500 asked a question How do I ssh to an OpenStack instance?

I have an OpenStack component server running Ubuntu. I created a Cirros instance via OpenStack's GUI. I associated an IP address with the Cirros instance using the OpenStack GUI. I can SSH from the Cirros instance to the Ubuntu server. But I cannot SSH from the Ubuntu server to the Cirros server. I get "Connection timed out." I can ping the Cirros instance's associated IP address. The echo comes from its original IP address.

I used nmap from the Ubuntu server to the Cirros server. Every port appears to be filtered (or blocked) on the target Cirros machine including port 135. That is, port 22 is not open between the Ubuntu server and the Cirros server. I can ssh from the Ubuntu server to other Linux machines (but not instances).

On the Cirros instance, I can ssh to the loopback IP address. I get prompted for a password. It works fine. What can I do to ssh from my Ubuntu machine to the Cirros instance?

I don't think a security group is blocking port 22. nova secgroup-list shows these rules were in place:

Protocol From Port       To Port
tcp            22            22     0.0.0.0/0    
icmp           -1            -1     0.0.0.0/0

What does port -1 do? It is an icmp rule. So it likely is irrelevant. But I am curious.

Could a neutron security group be blocking port 22 to the instance? How do I identify and modify such a rule?

2015-09-03 16:07:28 -0500 asked a question What command to see which security group appplies to a network?

What is the command to see the neutron security group that governs a given neutron network? I know about the network. I know about the security groups. I just cannot find which security group applies to my network.

I did a neutron net-show on a network. I see the ID, subnets value, and tenant_id.

I did a neutron security-group-list. I then did a neutron security-group-list on each ID from the neutron security-group-list value. But I do not know which security group is protecting a given network I want to learn more about.

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2015-07-27 12:13:10 -0500 asked a question What are endpoints?

In many different OpenStack components, documentation refers to endpoints. Networking, API, and Keystone endpoints are discussed everywhere. What exactly is the definition of an endpoint in the context of OpenStack?

2015-07-27 12:13:10 -0500 asked a question nova volume-attach command is failing

Must a nova volume-attach command have three parameters (for server, volume, device)? Or could the command have just server and volume with no device?

This makes me think it must have device: http://docs.openstack.org/openstack-ops/content/attach_block_storage.html (http://docs.openstack.org/openstack-o...)

But according to an OpenStack expert, the device is not necessary.

2015-07-27 12:13:10 -0500 asked a question Nova volume-attach command is failing

Must a nova volume-attach command have three parameters (for server, volume, device)? Or could the command have just server and volume with no device?

This makes me think it must have device: http://docs.openstack.org/openstack-ops/content/attach_block_storage.html (http://docs.openstack.org/openstack-o...)

But according to an OpenStack expert, the device is not necessary.