[openstack-dev] [tripleo] Install Kubernetes in the overcloud using TripleO

Bogdan Dobrelya bdobreli at redhat.com
Wed Sep 20 08:15:37 UTC 2017

On 08.06.2017 18:36, Flavio Percoco wrote:
> Hey y'all,
> Just wanted to give an updated on the work around tripleo+kubernetes.
> This is
> still far in the future but as we move tripleo to containers using
> docker-cmd,
> we're also working on the final goal, which is to have it run these
> containers
> on kubernetes.
> One of the first steps is to have TripleO install Kubernetes in the
> overcloud
> nodes and I've moved forward with this work:
> https://review.openstack.org/#/c/471759/
> The patch depends on the `ceph-ansible` work and it uses the
> mistral-ansible
> action to deploy kubernetes by leveraging kargo. As it is, the patch
> doesn't
> quite work as it requires some files to be in some places (ssh keys) and a
> couple of other things. None of these "things" are blockers as in they
> can be
> solved by just sending some patches here and there.
> I thought I'd send this out as an update and to request some early
> feedback on
> the direction of this patch. The patch, of course, works in my local
> environment
> ;)

Note that Kubespray (former Kargo) now supports the kubeadm tool
natively [0]. This speeds up a cluster bootstrapping from an average
25-30 min to a 9 or so. I believe this makes Kubespray a viable option
for upstream development of OpenStack overclouds managed by K8s.
Especially, bearing in mind the #deployment-time effort and all the hard
work work done by tripleo and infra teams in order to shorten the CI
jobs time.

By the way, here is a package review [1] for adding a kubespray-ansible
library, just ansible roles and playbooks, to RDO. I'd appreciate some
help with moving this forward, like choosing another place to host the
package, it got stuck a little bit.

[0] https://github.com/kubernetes-incubator/kubespray/issues/553
[1] https://bugzilla.redhat.com/show_bug.cgi?id=1482524

> Flavio
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Best regards,
Bogdan Dobrelya,
Irc #bogdando

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