Refactor neutron-keepalived-state-change

[Rodolfo Alonso]

The goal of this bug is to track the efforts in the refactor of neutron-keepalived-state-change. The rationale behind this proposal is to reduce the memory footprint of the script. Currently is around 100MB per instance (that means in an environment with 100 HA routers, the memory used only by the scripts handling the router state will be 10GB per node).

The other goal is to improve the script stability. The CI tests related to the HA router state change are not stable.

This LP bug proposes to implement the script using bash, instead of Python.

[Christian Rohmann (christian-rohmann)]

Rodolfo are you still working on a new implementation?

[Rodolfo Alonso (rodolfo-alonso-hernandez)]

Hi Christian:

I started a POC in [1]. The CI is OK now but I still have some comments to address. I'll continue with this implementation during the initial weeks of this release.

Regards.

[1]https://review.opendev.org/c/openstack/neutron/+/836140

[OpenStack Infra (hudson-openstack)]

Change abandoned by "Slawek Kaplonski <email address hidden>" on branch: master
Review: https://review.opendev.org/c/openstack/neutron/+/836140
Reason: This review is > 4 weeks without comment, and failed Zuul jobs the last time it was checked. We are abandoning this for now. Feel free to reactivate the review by pressing the restore button and leaving a 'recheck' comment to get fresh test results.