On 9/3/20 5:58 PM, Ken Gaillot wrote: > 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. Or like in "machine bed" more technically. That btw. does at least in German exist as "Maschinenbett" as well. > >> 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 The software is rather outdated.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).
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