/project/
/package/
__init__.py
module.py
setup.py
TL;DR
Install Postgres 9.6, and then:
sudo pg_dropcluster 9.6 main --stop
sudo pg_upgradecluster 9.5 main
sudo pg_dropcluster 9.5 main
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Prepare your RDS instance and [authorize access to it][1] (basically make it public).
-
Put your app in maintenance mode:
heroku maintenance:on
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Save the latest SQL dump of the DB: