Regularly delete old backups

[inglesp]

For the last five years we've been backing up the postgres database to Google Cloud Storage daily. Each backup is 30GB, and the total cost was creeping up.

After discussion I've cleared out all backups except those taken on the first of the month:

import re
from google.cloud.storage import Client

c = Client("ebmdatalab")
for b in c.list_blobs("ebmdatalab_db_backups", prefix="prescribing"):
  if re.search("_01\.sql\.gz$", b.name):
    continue
  print(b.name)
  b.delete()

We should run a job to do this regularly.