[ClusterLabs] Tuchanka

[Ken Gaillot]

On Wed, 2020-09-02 at 20:33 +0300, Олег Самойлов wrote:
> Hi all.
> 
> I have developed a test bed to test high available clusters based on
> Pacemaker and PostgreSQL. The combination of words "test bed" was
> given to me by a dictionary. For an russian this is rather funny, so,
> please, tell me is this suitable phrase for this?

As a native English speaker I had never noticed how weird that looks
until now. :)

You got me curious, but it appears the exact origin of this phrase is
one of the few remaining things the Internet doesn't know.

"Test bed" was apparently first used in the 1910s in aeronautics for
airplane chassis used to test new equipment, so I'm going to guess it
comes from the sense of "bed" as a flat place where things are placed,
e.g. "sea bed" for the sea floor, "truck bed" for the back part of a
pickup truck, "flower bed" for a small garden area.

> The test bed is deployed on VirtualBox  virtual machines (VMs) in
> MacBook Pro. Totally there will be 12 VMs which will occupy 36GiB of
> hard disk. They will form 4 high available clusters (different
> variants). The clusters are automatically created. And can be
> automatically tested. The special script will in loop imitates
> different faults, wait for restoration the cluster, fix the broken
> node and do next test. The project is under MIT license in GitHub and
> I just have finished translation README to English language.
> 
> https://github.com/domclick/tuchanka
> 
> This test bed can be used to test HA clusters. There is a list of
> already detected problems of Pacemaker and PostgreSQL in the README.
> And it can be used for presentations, thats why it is designed to run
> inside one MacBook Pro. I think this will be much better instead of
> screenshots or video to show how HA clusters survive different faults
> in the real time.
> 
> The software is rather outdated. It works with PostgreSQL 11 and
> CentOS 7. The next step will be upgrading to CentOS 8 and PostgreSQL
> 12. Please tell me, is it useful and worth to continue? Where is
> better announce it? May be somewhere exists special mailing list for
> such things.

This is the right list.

I haven't had a chance to look too deeply at tuchanka, but it seems
interesting. As Jehan-Guillaume noted, there are other cluster test
platforms already, but none of them really cover everybody's desired
scenarios (or is easily extensible).
-- 
Ken Gaillot <kgaillot at redhat.com>