Firewalld, NetworkManager, and OpenStack

These are my notes on making OpenStack play well with firewalld and NetworkManager.


By default, NetworkManager attempts to start a DHCP client on every new available interface. Since booting a single instance in OpenStack can result in the creation of several virtual interfaces, this results in a lot of …

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Flat networks with ML2 and OpenVSwitch

Due to an unfortunate incident involving sleep mode and an overheated backpack I had the "opportunity" to rebuild my laptop. Since this meant reinstalling OpenStack I used this as an excuse to finally move to the ML2 network plugin for Neutron.

I was attempting to add an external network using …

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Multinode OpenStack with Packstack

Thu 27 February 2014 by Lars Kellogg-Stedman Tags openstack rdo hangout

I was the presenter for this morning's RDO hangout, where I ran through a simple demonstration of setting up a multinode OpenStack deployment using packstack.

The slides are online here.

Here's the video (also available on the event page):

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Show OVS external-ids

Sun 19 January 2014 by Lars Kellogg-Stedman Tags openstack openvswitch

This is just here as a reminder for me:

An OVS interface has a variety of attributes associated with it, including an external-id field that can be used to associate resources outside of OpenVSwitch with the interface. You can view this field with the following command:

$ ovs-vsctl --columns=name,external-ids …
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Stupid OpenStack Tricks

Thu 16 January 2014 by Lars Kellogg-Stedman Tags openstack tricks

I work with several different OpenStack installations. I usually work on the command line, sourcing in an appropriate stackrc with credentials as necessary, but occasionally I want to use the dashboard for something.

For all of the deployments with which I work, the keystone endpoint is on the same host …

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