tf-scripts/pgsql_maint202412.sh

#!/usr/bin/env bash

# This script does the following things:
# - Stop mastodon services
# - Stop postgresql service
# - Delete AWS S3 pgbackrest repository
# - Install postgresql-16
# - Upgrade existing cluster to postgresql-16
# - Start postgresql

# Stop relevant services
systemctl stop mastodon-* && systemctl stop postgresql*

# Delete deprecated AWS repository from pgbackrest stanza
sudo -u postgres pgbackrest --stanza=main --log-level-console=info stop && \
sudo -u postgres pgbackrest --stanza=main --repo=1 --log-level-console=info stanza-delete

# Install Postgres 16 and make sure postgresql is stopped again
apt install -y postgresql-16 && systemctl stop postgresql*

# Upgrade pgsql14 cluster to 16
pg_renamecluster 16 main main_pristine && pg_upgradecluster --method=link 14 main

# Start postgresql
systemctl start postgresql

# REMAINING TODO ITEMS
# - Upgrade stanza in pgbackrest - https://pgbackrest.org/user-guide.html#upgrade-stanza
# systemctl start mastodon-* and verify it is working.