def start_watcher_thread():
# Create monitor object that encapsulates monitoring activities
watcher = watcherutil.Watcher(hutil.error, hutil.log, log_to_console=True)
# Create an IMDS data logger and set it to the monitor object
imds_logger = ImdsLogger(hutil.get_name(), hutil.get_extension_version(),
waagent.WALAEventOperation.HeartBeat, waagent.AddExtensionEvent)
watcher.set_imds_logger(imds_logger)
# Start a thread to perform periodic monitoring activity (e.g., /etc/fstab watcher, IMDS data logging)
threadObj = threading.Thread(target=watcher.watch)
threadObj.daemon = True
threadObj.start()
def setUp(self):
self._watcher = watcherutil.Watcher(sys.stderr, sys.stdout)
try:
os.mkdir(self._datapath)
except OSError as e:
if (e.errno != errno.EEXIST):
raise
pass
# mount an overlay so that we can make changes to /etc/fstab
subprocess.call(['sudo',
'mount', '-t', 'overlayfs', 'overlayfs',
'-olowerdir=/etc,upperdir=' + self._datapath,
'/etc'])
pass