def hostname():
"""
Get the hostname from
- config
- unix internals
- ec2
"""
result = None
config = context.app_config
hostname_from_config = config['credentials']['hostname']
if hostname_from_config and is_valid_hostname(hostname_from_config):
result = hostname_from_config
# then move on to os-specific detection
if result is None:
def _get_hostname_unix():
try:
# fqdn
out, err = subp.call('/bin/hostname -f')
return out[0]
except Exception:
return None
if os_name() in ['mac', 'freebsd', 'linux', 'solaris']:
unix_hostname = _get_hostname_unix()
if unix_hostname and is_valid_hostname(unix_hostname):
result = unix_hostname
# if its ec2 default hostname, try to get instance_id
if result is not None and True in [result.lower().startswith(p) for p in [u'ip-', u'domu']]:
instance_id = AmazonEC2.instance_id()
if instance_id:
result = instance_id
# fall back on socket.gethostname()
if result is None:
try:
socket_hostname = socket.gethostname()
except socket.error:
socket_hostname = None
if socket_hostname and is_valid_hostname(socket_hostname):
result = socket_hostname
if result is None:
raise AmplifyCriticalException(
message='Unable to determine host name. Define it in the config file'
)
else:
return result
def __init__(self, **kwargs):
super(SystemCommonMetaCollector, self).__init__(**kwargs)
self.uuid = self.object.data['uuid']
self.hostname = self.object.data['hostname']
self.ec2_metadata = AmazonEC2.read_meta()
