examples/add_machine.py

   1 #!/usr/bin/env python3.5
   2
   3 """
   4 This example:
   5
   6 1. Connects to the current model
   7 2. Creates two machines and a lxd container
   8 3. Deploys charm to the lxd container
   9
  10 """
  11 import logging
  12
  13 from juju import loop
  14 from juju.model import Model
  15
  16 MB = 1
  17 GB = 1024
  18
  19
  20 async def main():
  21     model = Model()
  22     await model.connect_current()
  23
  24     try:
  25         # add a new default machine
  26         machine1 = await model.add_machine()
  27         # add a machine with constraints, disks, and series
  28         machine2 = await model.add_machine(
  29             constraints={
  30                 'mem': 256 * MB,
  31             },
  32             disks=[{
  33                 'pool': 'rootfs',
  34                 'size': 10 * GB,
  35                 'count': 1,
  36             }],
  37             series='xenial',
  38         )
  39         # add a lxd container to machine2
  40         machine3 = await model.add_machine(
  41             'lxd:{}'.format(machine2.id))
  42
  43         # deploy charm to the lxd container
  44         application = await model.deploy(
  45             'ubuntu-10',
  46             application_name='ubuntu',
  47             series='xenial',
  48             channel='stable',
  49             to=machine3.id
  50         )
  51
  52         await model.block_until(
  53             lambda: all(unit.workload_status == 'active'
  54                         for unit in application.units))
  55
  56         await application.remove()
  57         await machine3.destroy()
  58         await machine2.destroy()
  59         await machine1.destroy()
  60     finally:
  61         await model.disconnect()
  62
  63
  64 logging.basicConfig(level=logging.DEBUG)
  65 ws_logger = logging.getLogger('websockets.protocol')
  66 ws_logger.setLevel(logging.INFO)
  67
  68 loop.run(main())