old_contents: import os, time
  
  from optparse import make_option
  from django.conf import settings
  from django.core.management.base import BaseCommand, CommandError
  from django.db import connections
  
  
  class Command(BaseCommand):
      help = "wait for default DB connection"
  
      db_name = 'default'
      N = 10
  
      def handle(self, *args, **options):
          i = 0
          connected = False
          db_conn = connections[self.db_name]
          while not connected:
              try:
                  c = db_conn.cursor()
                  connected = True
              except:
                  print('error connecting to DB...')
                  if i > self.N:
                      print('...exiting')
                      raise
                  print('...retrying')
                  i += 1
                  time.sleep(1)
  
new_contents: import os, time
  
  from optparse import make_option
  from django.conf import settings
  from django.core.management.base import BaseCommand, CommandError
  from django.db import connections
  
  
  class Command(BaseCommand):
      help = "wait for default DB connection"
  
      db_name = 'default'
      N = 20
  
      def handle(self, *args, **options):
          i = 0
          connected = False
          db_conn = connections[self.db_name]
          while not connected:
              try:
                  c = db_conn.cursor()
                  connected = True
              except:
                  print('error connecting to DB...')
                  if i > self.N:
                      print('...exiting')
                      raise
                  print('...retrying')
                  i += 1
                  time.sleep(1)
  
subject: increase waiting time for DB up