2019 review: OpenStack

Another year passed so let me try to summarize it. And a lot of things happened so it will be set of posts.


We did two releases: ‘stein’ in July and ‘train’ in December. As usual a bit later than most of OpenStack projects as we have to wait for their releases, then for distributions to provide their binary packages, test everything etc.

2019 was also a year of moving to Python 3 in our project. Images went in rounds — first some in Stein, then rest in Train cycle. We managed to remove Python 2 support from Kolla-Ansible but have to wait for TripleO project before we drop Py2 in Kolla itself.

Also, we removed OracleLinux support. No one from active developers had access to it and jobs were failing on random moments. CentOS 7 support covered all needs in our opinion.

CentOS 8 was hoped to be ready for cloud use. But it was not due to many changes needed in build infrastructure. Now, after 8.1.1911 release, there is a hope that situation will change and SIGs will be able to build their packages.

On the other hand, we added support for IPv6 deployments. Linaro developers helped with testing as our second Linaro Developer Cloud will be IPv6 only and all resources will be provided for OpenStack infrastructure.

There was new OpenStack project called Kayobe. It used both Kolla and Kolla-Ansible (and some other projects) to deploy containered OpenStack on bare metal. Including provisioning. We accepted it as subproject of Kolla as some of our members work in all those projects.


During 2019 I got huge amount of help from OpenStack infrastructure team. We changed mirroring of CentOS, Debian, Ubuntu and several external repositories for any of those distributions. AArch64 was added where it was needed, changes got reviewed quickly. Perfect job!

Continuous Integration

After long fight with issues we finally have working AArch64 CI for OpenStack projects. Linaro provided some vcpu in Linaro Developer Cloud, infrastructure admins created some nodes from it and then created ‘check-arm64’ pipeline on Zuul.

This way any OpenStack project can add tests on 64-bit Arm hardware without impacting their standard set of tests. We went that way due to low amount of nodes and it turned out to be very good move. Kolla(-ansible) itself is able to saturate all of them during developer heavy days.

More nodes are coming. Managed by Linaro on sponsored hardware. Pure IPv6!

kolla linaro openstack timeline