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Evacuate in nova: one command to confuse us all
If you’ve ever used OpenStack Nova, you’ve probably at least seen our plethora of confusing commands that involve migrating instances away from a failing (or failed) compute host. If you are brave, you’ve tried to use one or more of … Continue reading
Upgrading Nova to Kilo with minimal downtime
Starting in Icehouse, Nova gained the ability to do partial live upgrades. This first step meant that control services (which are mostly stateless) could be upgraded along with database schema before any of the compute nodes. After that step was … Continue reading
A brief overview of Nova’s new object model (Part 3)
In parts one and two, I talked about the reasoning for developing an object model inside of Nova, as well as showed a sample implementation for a toy object. In this part, I will examine parts of some “real” objects … Continue reading
Posted in OpenStack
Tagged Instance, nova, NovaObject, objects, openstack, SecurityGroup, serialization
A tool for watching Zuul and Jenkins
In my work on OpenStack Nova, I often have multiple patches in flight somewhere on the CI system. When patches are first submitted (or resubmitted) they go into Zuul’s “check” queue for a first pass of the tests. After a … Continue reading
Dan’s Partial Summary of the Nova Track
Last week, OpenStack developers met in Portland, OR for the Havana Design Summit. Being mostly focused on Nova development, I spent almost all of my time in that track. Below are some observations not yet covered by other folks. Baremetal … Continue reading