don't suppress error when changing permissions in uncloud vmm
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parent
b7f3ba1a34
commit
ec40d6b1e0
3 changed files with 49 additions and 59 deletions
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@ -33,10 +33,10 @@ def maintenance(host):
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vmm = VMM()
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running_vms = vmm.discover()
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for vm_uuid in running_vms:
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if vmm.is_running(vm_uuid) and vmm.get_status(vm_uuid) == "running":
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if vmm.is_running(vm_uuid) and vmm.get_status(vm_uuid) == 'running':
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logger.debug('VM {} is running on {}'.format(vm_uuid, host))
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vm = shared.vm_pool.get(
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join_path(settings["etcd"]["vm_prefix"], vm_uuid)
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join_path(settings['etcd']['vm_prefix'], vm_uuid)
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)
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vm.status = VMStatus.running
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vm.vnc_socket = vmm.get_vnc(vm_uuid)
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@ -51,13 +51,13 @@ def main(hostname, debug=False):
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# Does not yet exist, create it
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if not host:
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host_key = join_path(
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settings["etcd"]["host_prefix"], uuid4().hex
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settings['etcd']['host_prefix'], uuid4().hex
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)
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host_entry = {
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"specs": "",
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"hostname": hostname,
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"status": "DEAD",
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"last_heartbeat": "",
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'specs': '',
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'hostname': hostname,
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'status': 'DEAD',
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'last_heartbeat': '',
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}
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shared.etcd_client.put(
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host_key, host_entry, value_in_json=True
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@ -70,25 +70,25 @@ def main(hostname, debug=False):
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heartbeat_updating_process = mp.Process(target=update_heartbeat, args=(hostname,))
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heartbeat_updating_process.start()
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except Exception as e:
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raise Exception("uncloud-host heartbeat updating mechanism is not working") from e
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raise Exception('uncloud-host heartbeat updating mechanism is not working') from e
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for events_iterator in [
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shared.etcd_client.get_prefix(settings["etcd"]["request_prefix"], value_in_json=True),
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shared.etcd_client.watch_prefix(settings["etcd"]["request_prefix"], timeout=10, value_in_json=True)
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shared.etcd_client.get_prefix(settings['etcd']['request_prefix'], value_in_json=True),
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shared.etcd_client.watch_prefix(settings['etcd']['request_prefix'], timeout=10, value_in_json=True)
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]:
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for request_event in events_iterator:
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request_event = RequestEntry(request_event)
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if request_event.type == "TIMEOUT":
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if request_event.type == 'TIMEOUT':
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maintenance(host.key)
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elif request_event.hostname == host.key:
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logger.debug("VM Request: %s on Host %s", request_event, host.hostname)
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logger.debug('VM Request: %s on Host %s', request_event, host.hostname)
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shared.request_pool.client.client.delete(request_event.key)
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vm_entry = shared.etcd_client.get(
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join_path(settings["etcd"]["vm_prefix"], request_event.uuid)
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join_path(settings['etcd']['vm_prefix'], request_event.uuid)
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)
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logger.debug("VM hostname: {}".format(vm_entry.value))
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logger.debug('VM hostname: {}'.format(vm_entry.value))
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vm = virtualmachine.VM(vm_entry)
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if request_event.type == RequestType.StartVM:
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vm.start()
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@ -110,14 +110,14 @@ def main(hostname, debug=False):
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destination_sock_path=request_event.destination_sock_path,
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)
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else:
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logger.error("Host %s not found!", request_event.destination_host_key)
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logger.error('Host %s not found!', request_event.destination_host_key)
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if __name__ == "__main__":
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if __name__ == '__main__':
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argparser = argparse.ArgumentParser()
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argparser.add_argument(
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"hostname", help="Name of this host. e.g uncloud1.ungleich.ch"
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'hostname', help='Name of this host. e.g uncloud1.ungleich.ch'
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)
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args = argparser.parse_args()
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mp.set_start_method("spawn")
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mp.set_start_method('spawn')
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main(args.hostname)
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@ -16,7 +16,7 @@ class CustomConfigParser(configparser.RawConfigParser):
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result = super().__getitem__(key)
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except KeyError as err:
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raise KeyError(
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"Key '{}' not found in configuration. Make sure you configure uncloud.".format(
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'Key \'{}\' not found in configuration. Make sure you configure uncloud.'.format(
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key
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)
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) from err
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@ -25,10 +25,10 @@ class CustomConfigParser(configparser.RawConfigParser):
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class Settings(object):
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def __init__(self, config_key="/uncloud/config/"):
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conf_name = "uncloud.conf"
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def __init__(self, config_key='/uncloud/config/'):
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conf_name = 'uncloud.conf'
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conf_dir = os.environ.get(
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"UCLOUD_CONF_DIR", os.path.expanduser("~/uncloud/")
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'UCLOUD_CONF_DIR', os.path.expanduser('~/uncloud/')
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)
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self.config_file = os.path.join(conf_dir, conf_name)
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self.config_parser = CustomConfigParser(allow_no_value=True)
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@ -42,23 +42,21 @@ class Settings(object):
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try:
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self.config_parser.read(self.config_file)
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except Exception as err:
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logger.error("%s", err)
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logger.error('%s', err)
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def get_etcd_client(self):
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args = tuple()
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try:
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kwargs = {
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"host": self.config_parser.get("etcd", "url"),
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"port": self.config_parser.get("etcd", "port"),
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"ca_cert": self.config_parser.get("etcd", "ca_cert"),
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"cert_cert": self.config_parser.get(
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"etcd", "cert_cert"
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),
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"cert_key": self.config_parser.get("etcd", "cert_key"),
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'host': self.config_parser.get('etcd', 'url'),
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'port': self.config_parser.get('etcd', 'port'),
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'ca_cert': self.config_parser.get('etcd', 'ca_cert'),
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'cert_cert': self.config_parser.get('etcd', 'cert_cert'),
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'cert_key': self.config_parser.get('etcd', 'cert_key'),
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}
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except configparser.Error as err:
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raise configparser.Error(
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"{} in config file {}".format(
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'{} in config file {}'.format(
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err.message, self.config_file
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)
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) from err
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@ -67,8 +65,8 @@ class Settings(object):
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wrapper = Etcd3Wrapper(*args, **kwargs)
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except Exception as err:
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logger.error(
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"etcd connection not successfull. Please check your config file."
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"\nDetails: %s\netcd connection parameters: %s",
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'etcd connection not successfull. Please check your config file.'
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'\nDetails: %s\netcd connection parameters: %s',
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err,
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kwargs,
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)
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@ -79,15 +77,15 @@ class Settings(object):
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def read_internal_values(self):
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self.config_parser.read_dict(
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{
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"etcd": {
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"file_prefix": "/files/",
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"host_prefix": "/hosts/",
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"image_prefix": "/images/",
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"image_store_prefix": "/imagestore/",
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"network_prefix": "/networks/",
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"request_prefix": "/requests/",
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"user_prefix": "/users/",
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"vm_prefix": "/vms/",
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'etcd': {
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'file_prefix': '/files/',
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'host_prefix': '/hosts/',
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'image_prefix': '/images/',
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'image_store_prefix': '/imagestore/',
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'network_prefix': '/networks/',
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'request_prefix': '/requests/',
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'user_prefix': '/users/',
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'vm_prefix': '/vms/',
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}
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}
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)
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@ -95,15 +93,15 @@ class Settings(object):
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def read_config_file_values(self, config_file):
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try:
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# Trying to read configuration file
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with open(config_file, "r") as config_file_handle:
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with open(config_file, 'r') as config_file_handle:
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self.config_parser.read_file(config_file_handle)
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except FileNotFoundError:
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sys.exit(
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"Configuration file {} not found!".format(config_file)
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'Configuration file {} not found!'.format(config_file)
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)
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except Exception as err:
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logger.exception(err)
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sys.exit("Error occurred while reading configuration file")
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sys.exit('Error occurred while reading configuration file')
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def read_values_from_etcd(self):
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etcd_client = self.get_etcd_client()
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@ -113,7 +111,7 @@ class Settings(object):
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self.config_parser.read_dict(config_from_etcd.value)
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self.last_config_update = datetime.utcnow()
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else:
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raise KeyError("Key '{}' not found in etcd. Please configure uncloud.".format(self.config_key))
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raise KeyError('Key \'{}\' not found in etcd. Please configure uncloud.'.format(self.config_key))
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def __getitem__(self, key):
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# Allow failing to read from etcd if we have
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@ -121,7 +119,7 @@ class Settings(object):
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if key not in self.config_parser.sections():
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try:
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self.read_values_from_etcd()
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except KeyError as e:
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except KeyError:
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pass
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return self.config_parser[key]
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@ -190,17 +190,9 @@ class VMM:
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err.stderr.decode("utf-8"),
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)
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else:
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with suppress(sp.CalledProcessError):
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sp.check_output(
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[
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"sudo",
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"-p",
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"Enter password to correct permission for uncloud-vmm's directory",
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"chmod",
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"-R",
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"o=rwx,g=rwx",
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self.vmm_backend,
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]
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["sudo", "-p", "Enter password to correct permission for uncloud-vmm's directory",
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"chmod", "-R", "o=rwx,g=rwx", self.vmm_backend]
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)
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# TODO: Find some good way to check whether the virtual machine is up and
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