[openstack-ansible] weekly update

Radosław Piliszek radoslaw.piliszek at gmail.com
Fri Jul 26 15:01:46 UTC 2019

Hi Mohammed,

regarding CentOS CI slowness - you are not alone, kola is experiencing it
Some time ago I asked around and discovered that various projects
experience noticeable CI slowness using CentOS compared to Ubuntu.

The hit is more noticeable on image building than deploying and I guess
since OSA does "building/installing" while deploying, it experiences our
worse hit.
We deploy in containers so I even checked the host:Ubuntu, container:CentOS
scenario but it was noticeably slower anyway.
Hence it seems related to some CentOS libraries or common stuff (like
Python maybe?), not kernel.

We even ran into broken CI situation by being hit by horizon changing
translation-related internals and our once hacky way of compiling
translations which resulted in n^2 compilations instead of n - Ubuntu was a
bit slower than usual but CentOS timed out, possibly not even halfway
through horizon image building process...

Kind regards,

pt., 26 lip 2019 o 15:45 Mohammed Naser <mnaser at vexxhost.com> napisał(a):

> Hi everyone,
> I'm going to try doing these more often to keep everyone updated on
> the current state of openstack-ansible (mostly around what is
> discussed during our office hours / meetings).
> - Dmitriy has been working on removing unused code in playbooks,
> mostly around logs as we move to 100% systemd-journald.
> - We're discussing the proposal to remove os-log-dir-setup.yml, as
> well as rsyslog_client and rsyslog_server roles as they aren’t used
> anymore with the move to systemd-journald
> - We're also discussing removing all the complex bind mounts, which
> would clean it and simplify the code base.
> - Our continuous integration has been stable but needs upgrade jobs
> and increased coverage.  Our coverage would go up significantly by
> running aio_lxc for all supported systems.
> - Jonathan's work on binding to management IPs is making progress (and
> seems to be at the Galera stage).
> - CentOS CI has been very slow and nobody knows why.  It seems to be
> something we've regressed at some point.
> - A unicast flood issue affecting deployments using linuxbridge that
> happened inside os-vif needs to be patched.  It's still pending os-vif
> to patch.
> - Namrata mentioned an issue during the upgrade from Rocky to Stein
> (when upgrading WSREP SST method from xtrabackup-V2 to mariabackup)
> that will have to be fixed is Stein.  That's something that's in
> progress now.
> Thanks everyone for reading!
> Regards,
> Mohammed
> --
> Mohammed Naser — vexxhost
> -----------------------------------------------------
> D. 514-316-8872
> D. 800-910-1726 ext. 200
> E. mnaser at vexxhost.com
> W. http://vexxhost.com
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