hg.sr.ht migration plan

1. Build & install the new server (sakuya1) as VM host gen 2
2. Announce planned outage a week in advance
3. Spin up an hg.sr.ht stack and restore from the last backup. This is a good opportunity to test our backups in action.
4. Test everything!
5. Set up pgbouncer on hg.sr.ht¹
6. Await planned outage date
7. Set hg.sr.ht¹ to read-only mode (via pgbouncer, probably, and disable the hg SSH login account)
8. rsync any changes which have occured between steps 3 and 6 to hg.sr.ht²
9. Cut DNS over to hg.sr.ht² and monitor as users get transferred over
10. Disable cronjobs on hg.sr.ht¹
11. Monitor hg.sr.ht¹ and shut it off when traffic is more or less done hitting it
12. Remove backup credentials for hg.sr.ht¹ from konapku.sr.ht
13. Wait 2 weeks and then decommission hg.sr.ht¹

Things to double check on hg.sr.ht²:

• Is monitoring working? Double check node exporter
• Are backups working?
• Are ZFS snapshots being taken correctly?
• Are ZFS scrubs being run? Double check on the 1st