This is a repost of an email to the openstack-dev list, which is mostly here for historical reasons. Hi. I would like to run for the OpenStack Compute PTL position as well. I have been an active nova developer since late 2011, and have been a core reviewer for quite a while. I am currently…
Category: OpenStack
Comparing alembic with sqlalchemy migrate
In the last few days there has been a discussion on the openstack-dev mailing list about converting nova to alembic. Nova currently uses sqlalchemy migrate for its schema migrations. I would consider myself a sceptic of this change, but I want to be a well educated sceptic so I thought I should take a look…
On Continuous Integration testing for Nova DB
To quote Homer Simpson: “All my life I’ve had one dream, to achieve my many goals.”. One of my more recent goals is a desire to have real continuous integration testing for database migrations in Nova. You see, at the moment, database migrations can easily make upgrades painful for deployers, normally by taking a very…
Exploring a single database migration
Yesterday I was having some troubles with a database migration download step, and a Joshua Hesketh suggested I step through the migrations one at a time and see what they were doing to my sqlite test database. That’s a great idea, but it wasn’t immediately obvious to me how to do it. Now that I’ve…
Nova database continuous integration
I’ve had some opportunity recently to spend a little quality time off line, and I spent some of that time working on a side project I’ve wanted to do for a while — continuous integration testing of nova database migrations. Now, the code isn’t perfect at the moment, but I think its an interesting direction…
Merged in Havana: fixed ip listing for single hosts
Nova has supported listing the fixed ips for a single host for a while. Well, except for that time we broke it by removing the database call it used and not noticing. My change to fix that situation has just landed, so this should now work again. To list the fixed ips used on a…
Michael’s surprisingly unreliable predictions for the Havana Nova release
I should start out by saying that because OpenStack is an open source project, it is hard to know exactly what will land in Havana — the developers are volunteers, and sometimes things get in the way of them doing the work they intended. However, these are the notes I wrote up on the high…
Getting started with OpenStack development
I just gave my presentation at the Havana Conference about how to get started with OpenStack development. A few people asked for my slide deck, so I am posting it here. The talk was taped, and I am sure some more formal release will happen in the future, but I wanted to get this out…
Faster pip installs
Last week with the help of the lovely openstack-infra people, I discovered that you can have a local cache of pip downloads. This speeds up rebuilding test environments when you need to jump between branches with different dependencies. Its as simple as chucking something like: export PIP_DOWNLOAD_CACHE=~/cache/pip …into your .bashrc or equivalent.
Merged in Havana: configurable iptables drop actions in nova
LaunchPad bug 1013893 asked nicely if the drop action for iptables rules created by nova-network could be configured. The idea here is that you might want to do something other than a plain old drop — for example logging before dropping. This has now been implemented in Havana. To configure the drop action, set the…