I created a special flavor, 'parsingtest' and a new big VM, 'parsing-qa-01'. That should work as a promethium replacement. It might be a bit hard to migrate things over from the old promethium until T202636 is resolved.

Update:

• All the repos have been mirrored on parsing-qa-01
• All the dbs have been mirrored on parsing-qa-01
• I installed / built required packages
• I set up the pngs directory for dumping the visual diff images
• I set up all services and mirrored their service files from promethium
• I set up nginx, and various setup and config files
• I mirrored /etc/hosts (with the existing comment # SSS: Temporary hack while we wait for T132216 to be resolved)
• I started a new run of the tidy vs remex visual diffing code there.

So far so good.

Still todo:

• Once the test completes successfully, the DNS entries for mw-expts-vd.wmflabs.org should be updated to point to parsing-qa-01
• After that, I'll verify that all the other web UI and web services run properly.
• After this, we are good to decom promethium

@Andrew Everything looks good so far. I had to tweak some configs (because some of the dir paths are slightly different) but otherwise, all looks good to me. I've updated the DNS in horizon to point to parsing-qa-01.

So, as far as I am concerned, you can decom promethium on your own timeline.