Bump Postgres 12.2 to 15.x on docker-compose.yml

[atsu1125]

What

Bump Postgres 12.2 to 15.x on docker-compose.yml

Why

Misskey v13 requires Postgres 15.x

Additional info (optional)

Should work properly 🥴
User needs to manually update PostgreSQL.

Part 1 - Backup DB from PostgreSQL 12.2

# Shutdown app containers (keeping db online)
$ docker-compose stop web

# Create backup of misskey db to local file
$ docker-compose exec db pg_dumpall -U example-misskey-user > ~/12.2.backup

# Shutdown db container
$ docker-compose down --remove-orphans

# Move Old db volume
$ sudo mv db ~/12.2db

Part 2 - Import DB to PostgreSQL 15

# Checkout for Misskey 
$ git fetch && VERSION=$(curl -s https://api.github.com/repos/misskey-dev/misskey/releases/latest | grep tag_name | cut -d '"' -f 4) && echo "Latest Misskey version is $VERSION" && git checkout ${VERSION}

# Boot the new DB - PostgreSQL 15
$ docker-compose up -d db

# Import the backup
$ cat ~/12.2.backup | docker-compose exec -T db psql -U example-misskey-user -d misskey

Part 3 - Confirm import of DB has no serious errors

$ docker-compose logs db and confirm there are not any errors in the import stage. Below is a list of known errors, and their resolution.

Error 1

db_1 | ERROR: invalid input syntax for type <something>

These errors are bad and need to be investigated.

Running vacuumdb has apparently resolved these issues. Please read the optional command as an alternative to step 1.

Error 2

db_1 | LOG:  checkpoints are occurring too frequently (20 seconds apart)
db_1 | HINT:  Consider increasing the configuration parameter "max_wal_size".

These errors can be ignored.

Part 4 - Upgrade Misskey

• Follow standard Upgrade notes.

Alternative Step 1 - Vacuum DB before backup

# Shutdown app containers (keeping db online)
$ docker-compose stop web

# Vacuum your db (untested command)
## Note: If you believe your 12.2 DB might be corrupted or experience errors with the importing stage, 
$ docker-compose exec db pg_dumpall -U example-misskey-user > ~/12.2.novacuum.backup
$ docker-compose exec db vacuumdb -U example-misskey-user --all --full --analyze --verbose 
$ docker-compose exec db pg_dumpall -U example-misskey-user > ~/12.2.backup

# Shutdown db container
$ docker-compose down --remove-orphans

[codecov]

Codecov Report

Merging #9641 (2721b45) into develop (d456308) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff            @@
##           develop    #9641   +/-   ##
========================================
  Coverage    22.62%   22.62%           
========================================
  Files          731      731           
  Lines        68487    68487           
  Branches      2028     2028           
========================================
  Hits         15495    15495           
  Misses       52992    52992           

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[syuilo]

👍