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2017-06-01 11:54:38 -0500 commented answer How to provide Internet for VMs?

Thanks. I want to provide internet also for self-service networks. I know that I have to create a vrouter, But I dont know the physical setup.

2017-06-01 07:44:21 -0500 asked a question How to provide Internet for VMs?

Hi all! This is my current setup:

I have all the required services including the Neutron on the controller node.

image description

How can I provide Internet access for VMs in the provider network?


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2017-05-15 10:34:39 -0500 asked a question VNC connection problem after publishing horizon to outside

Hi. I published Horizon to outside using a simple port forwarder. Now, users use to connect to horizon. It works fine.

The problem is when they want to connect instance's console, they cannot connect to "controller:6080". In fact, they cannot resolve "controller" name. How can I make horizon to connect to "" instead of "controller:6080"?

I know two possible solutions are to configure DNS server or hosts file for clients who want to connect to horizon. But we don't have permissions to configure DNS server, and also manually configuring hosts file for every client is very difficult.

What do you suggest? Is this anyway to configure horizon to make the requests to instead of controller:6080? However, in this way, administrators who directly work from the local network cannot use VNC, since they are not in network.


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2017-05-10 07:48:35 -0500 commented answer How neutron behaves during VM migration?

Thank you very much. I want it deeper. I mean what happens to TCP connections to the first port, etc.?

2017-05-09 15:36:53 -0500 asked a question How neutron behaves during VM migration?

How neutron behaves during VM migration? I mean how neutron configures network interface after migrating a VM from one compute node to another?

2017-05-08 07:29:53 -0500 answered a question Devstack Keystone and Placement won't start after reboot

Hi. If you restart OS with Devstack, you need to reinstall Devstack.

2017-05-08 07:29:11 -0500 asked a question Which NAS should I buy for research?


I am a student in Computer Science. I have an OpenStack lab, and I want to buy a NAS for it. Do you have any experiences with any? I need a NAS that is fast, supports HA, and other features?


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2017-01-16 04:40:30 -0500 commented question Unable to create flow-classifier for service function chaining: The resource could not be found

Thanks for the comment. No I cannot run any SFC command. I run the command in --debug mode. The log is here:
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2017-01-15 06:27:30 -0500 asked a question Unable to create flow-classifier for service function chaining: The resource could not be found

I have an OpenStack setup with a controller node and two compute nodes. I installed networking-sfc using these commands:

$ git clone -b stable/newton
$ cd networking-sfc
$ sudo pip install -e /home/{user}/networking-sfc
$ neutron-db-manage --config-file /etc/neutron/neutron.conf --config-file /etc/neutron/plugins/ml2/ml2_conf.ini --subproject networking-sfc upgrade head
$ sudo python install

And then I was able to run sfc commands in Neutron CLI. At the first step, when I want to create a classifier, I receive the following error:

root@controller:/# neutron flow-classifier-create --description "PING traffic from to" --ethertype IPv4 --source-ip-prefix --destination-ip-prefix --protocol icmp FLOWCLASSIFIER01
The resource could not be found.<br /><br />

Neutron server returns request_ids: ['req-9f128a5e-7e00-45e9-a70e-5be19665fad7']

I couldn't find any usable logs in Neutron log files.