Upgrade postgres to 16

gistfile1.txt

# Create the file repository configuration:
sudo sh -c 'echo "deb https://apt.postgresql.org/pub/repos/apt $(lsb_release -cs)-pgdg main" > /etc/apt/sources.list.d/pgdg.list'

# Import the repository signing key:
wget --quiet -O - https://www.postgresql.org/media/keys/ACCC4CF8.asc | sudo apt-key add -

# Update the package lists:
sudo apt-get update

# Install the latest version of PostgreSQL.
# If you want a specific version, use 'postgresql-12' or similar instead of 'postgresql':
sudo apt-get -y install postgresql-16

# Check
sudo pg_lsclusters

# Stop new cluster
sudo pg_dropcluster 16 main --stop

# Upgrade
sudo pg_upgradecluster 14 main

# Drop old cluster
sudo pg_dropcluster 14 main

# Remove old packages
sudo apt purge postgresql-14 postgresql-client-14

# Check
sudo pg_lsclusters