def get_hostname():
"""
Get the canonical host name this agent should identify as. This is
the authoritative source of the host name for the agent.
Tries, in order:
* agent config (datadog.conf, "hostname:")
* 'hostname -f' (on unix)
* socket.gethostname()
"""
hostname = None
config = None
# first, try the config
try:
config = get_config()
config_hostname = config.get('hostname')
if config_hostname and is_valid_hostname(config_hostname):
return config_hostname
except CfgNotFound:
log.info("No agent or invalid configuration file found")
# Try to get GCE instance name
if hostname is None:
gce_hostname = GCE.get_hostname(config)
if gce_hostname is not None:
if is_valid_hostname(gce_hostname):
return gce_hostname
# then move on to os-specific detection
if hostname is None:
def _get_hostname_unix():
try:
# try fqdn
p = subprocess.Popen(['/bin/hostname', '-f'],
stdout=subprocess.PIPE)
out, err = p.communicate()
if p.returncode == 0:
if is_p3k():
return out.decode("utf-8").strip()
else:
return out.strip()
except Exception:
return None
os_name = get_os()
if os_name in ['mac', 'freebsd', 'linux', 'solaris']:
unix_hostname = _get_hostname_unix()
if unix_hostname and is_valid_hostname(unix_hostname):
hostname = unix_hostname
# if we have an ec2 default hostname, see if there's an instance-id available
if hostname is not None and True in [
hostname.lower().startswith(p) for p in [u'ip-', u'domu']
]:
instanceid = EC2.get_instance_id(config)
if instanceid:
hostname = instanceid
# fall back on socket.gethostname(), socket.getfqdn() is too unreliable
if hostname is None:
try:
socket_hostname = socket.gethostname()
except socket.error:
socket_hostname = None
if socket_hostname and is_valid_hostname(socket_hostname):
hostname = socket_hostname
if hostname is None:
log.critical(
"Unable to reliably determine host name. You can define one"
" in datadog.conf or in your hosts file")
raise Exception(
"Unable to reliably determine host name. You can define"
" one in datadog.conf or in your hosts file")
else:
return hostname
def get_hostname(hostname_from_config):
# type: (bool) -> Optional[str]
"""
Get the canonical host name this agent should identify as. This is
the authoritative source of the host name for the agent.
Tries, in order:
* agent config (datadog.conf, "hostname:")
* 'hostname -f' (on unix)
* socket.gethostname()
"""
hostname = None
config = None
# first, try the config if hostname_from_config is set to True
try:
if hostname_from_config:
config = get_config()
config_hostname = config.get('hostname')
if config_hostname and is_valid_hostname(config_hostname):
log.warning(
"Hostname lookup from agent configuration will be deprecated "
"in an upcoming version of datadogpy. Set hostname_from_config to False "
"to get rid of this warning")
return config_hostname
except CfgNotFound:
log.warning("No agent or invalid configuration file found")
# Try to get GCE instance name
if hostname is None:
gce_hostname = GCE.get_hostname(config)
if gce_hostname is not None:
if is_valid_hostname(gce_hostname):
return gce_hostname
# then move on to os-specific detection
if hostname is None:
def _get_hostname_unix():
try:
# try fqdn
p = subprocess.Popen(['/bin/hostname', '-f'],
stdout=subprocess.PIPE,
stderr=subprocess.DEVNULL)
out, err = p.communicate()
if p.returncode == 0:
if is_p3k():
return out.decode("utf-8").strip()
else:
return out.strip()
except Exception:
return None
os_name = get_os()
if os_name in ['mac', 'freebsd', 'linux', 'solaris']:
unix_hostname = _get_hostname_unix()
if unix_hostname and is_valid_hostname(unix_hostname):
hostname = unix_hostname
# if we have an ec2 default hostname, see if there's an instance-id available
if hostname is not None and True in [
hostname.lower().startswith(p) for p in [u'ip-', u'domu']
]:
instanceid = EC2.get_instance_id(config)
if instanceid:
hostname = instanceid
# fall back on socket.gethostname(), socket.getfqdn() is too unreliable
if hostname is None:
try:
socket_hostname = socket.gethostname() # type: Optional[str]
except socket.error:
socket_hostname = None
if socket_hostname and is_valid_hostname(socket_hostname):
hostname = socket_hostname
if hostname is None:
log.warning(
u"Unable to reliably determine host name. You can define one in your `hosts` file, "
u"or in `datadog.conf` file if you have Datadog Agent installed.")
return hostname
def get_hostname():
"""
Get the canonical host name this agent should identify as. This is
the authoritative source of the host name for the agent.
Tries, in order:
* agent config (datadog.conf, "hostname:")
* 'hostname -f' (on unix)
* socket.gethostname()
"""
hostname = None
config = None
# first, try the config
try:
config = get_config()
config_hostname = config.get('hostname')
if config_hostname and is_valid_hostname(config_hostname):
return config_hostname
except CfgNotFound:
log.info("No agent or invalid configuration file found")
# Try to get GCE instance name
if hostname is None:
gce_hostname = GCE.get_hostname(config)
if gce_hostname is not None:
if is_valid_hostname(gce_hostname):
return gce_hostname
# then move on to os-specific detection
if hostname is None:
def _get_hostname_unix():
try:
# try fqdn
p = subprocess.Popen(['/bin/hostname', '-f'], stdout=subprocess.PIPE)
out, err = p.communicate()
if p.returncode == 0:
if is_p3k():
return out.decode("utf-8").strip()
else:
return out.strip()
except Exception:
return None
os_name = get_os()
if os_name in ['mac', 'freebsd', 'linux', 'solaris']:
unix_hostname = _get_hostname_unix()
if unix_hostname and is_valid_hostname(unix_hostname):
hostname = unix_hostname
# if we have an ec2 default hostname, see if there's an instance-id available
if hostname is not None and True in [hostname.lower().startswith(p) for p in [u'ip-', u'domu']]:
instanceid = EC2.get_instance_id(config)
if instanceid:
hostname = instanceid
# fall back on socket.gethostname(), socket.getfqdn() is too unreliable
if hostname is None:
try:
socket_hostname = socket.gethostname()
except socket.error:
socket_hostname = None
if socket_hostname and is_valid_hostname(socket_hostname):
hostname = socket_hostname
if hostname is None:
log.critical("Unable to reliably determine host name. You can define one"
" in datadog.conf or in your hosts file")
raise Exception("Unable to reliably determine host name. You can define"
" one in datadog.conf or in your hosts file")
else:
return hostname