lemmy/scripts/postgres_15_to_16_upgrade.sh

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#!/bin/sh
set -e
echo "Do not stop in the middle of this upgrade, wait until you see the message: Upgrade complete."
echo "Stopping lemmy and all services..."
sudo docker compose stop
echo "Make sure postgres is started..."
sudo docker compose up -d postgres
echo "Waiting..."
sleep 20s
echo "Exporting the Database to 15_16.dump.sql ..."
sudo docker compose exec -T postgres pg_dumpall -c -U lemmy | sudo tee 15_16_dump.sql > /dev/null
echo "Done."
echo "Stopping postgres..."
sudo docker compose stop postgres
echo "Waiting..."
sleep 20s
echo "Removing the old postgres folder"
sudo rm -rf volumes/postgres
echo "Updating docker compose to use postgres version 16."
sudo sed -i "s/image: .*postgres:.*/image: docker.io/postgres:16-alpine/" ./docker-compose.yml
echo "Starting up new postgres..."
sudo docker compose up -d postgres
echo "Waiting..."
sleep 20s
echo "Importing the database...."
sudo cat 15_16_dump.sql | sudo docker compose exec -T postgres psql -U lemmy
echo "Done."
echo "Starting up lemmy..."
sudo docker compose up -d
echo "A copy of your old database is at 15_16.dump.sql . You can delete this file if the upgrade went smoothly."
echo "Upgrade complete."