this depends on a whole lot of imperative nonsense being done at the
same time, which i have done.
of special interest to anyone attempting to understand this is
https://docs.mattermost.com/deploy/postgres-migration.html
for the general shape of incompetence at work,
https://docs.mattermost.com/install/setting-up-socket-based-mattermost-database.html#with-unix-socket
for yet another interesting syntax for database connection strings, and
https://github.com/dimitri/pgloader/issues/782#issuecomment-502323324
for a truly astonishing take on how to do database migrations, which
unfortunately i have followed.
As far as I can tell, everything has kept working. Downtime was mostly
spent understanding connection string syntax and their horribly buggy
parsers.
Note for people with server access:
- i have kept the temporary files (including logs) around in
/persist/migration inside the container should we ever need them
again
- there's a zfs snapshot @pre-postgres with the old state
stuebinm
285a8e6a8e