Example #1
0
    def _get_hostname_metadata(self):
        """
        Returns a dictionnary that contains hostname metadata.
        """
        metadata = EC2.get_metadata(self.agentConfig)
        if metadata.get('hostname'):
            metadata['ec2-hostname'] = metadata.get('hostname')
            del metadata['hostname']

        if self.agentConfig.get('hostname'):
            metadata['agent-hostname'] = self.agentConfig.get('hostname')
        else:
            try:
                metadata["socket-hostname"] = socket.gethostname()
            except Exception:
                pass
        try:
            metadata["socket-fqdn"] = socket.getfqdn()
        except Exception:
            pass

        metadata["hostname"] = self.hostname
        metadata["timezones"] = self._decode_tzname(time.tzname)

        # Add cloud provider aliases
        host_aliases = GCE.get_host_aliases(self.agentConfig)
        if host_aliases:
            metadata['host_aliases'] = host_aliases

        return metadata
Example #2
0
def get_hostname(config=None):
    """
    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

    # first, try the config
    if config is None:
        from config import get_config
        config = get_config(parse_args=True)
    config_hostname = config.get('hostname')
    if config_hostname and is_valid_hostname(config_hostname):
        return config_hostname

    # Try to get GCE instance name
    gce_hostname = GCE.get_hostname(config)
    if gce_hostname is not None:
        if is_valid_hostname(gce_hostname):
            return gce_hostname

    # Try to get the docker hostname
    if Platform.is_containerized():

        # First we try from the Docker API
        docker_util = DockerUtil()
        docker_hostname = docker_util.get_hostname(use_default_gw=False)
        if docker_hostname is not None and is_valid_hostname(docker_hostname):
            hostname = docker_hostname

        elif Platform.is_k8s(): # Let's try from the kubelet
            kube_util = KubeUtil()
            _, kube_hostname = kube_util.get_node_info()
            if kube_hostname is not None and is_valid_hostname(kube_hostname):
                hostname = kube_hostname

    # then move on to os-specific detection
    if hostname is None:
        if Platform.is_unix() or Platform.is_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 (Platform.is_ecs_instance()) or (hostname is not None and EC2.is_default(hostname)):
        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')

    return hostname
Example #3
0
    def _populate_payload_metadata(self, payload, check_statuses, start_event=True):
        """
        Periodically populate the payload with metadata related to the system, host, and/or checks.
        """
        now = time.time()

        # Include system stats on first postback
        if start_event and self._is_first_run():
            payload['systemStats'] = self.agentConfig.get('system_stats', {})
            # Also post an event in the newsfeed
            payload['events']['System'] = [{
                'api_key': self.agentConfig['api_key'],
                'host': self.hostname,
                'timestamp': now,
                'event_type':'Agent Startup',
                'msg_text': 'Version %s' % get_version()
            }]

        # Periodically send the host metadata.
        if self._should_send_additional_data('host_metadata'):
            # gather metadata with gohai
            gohai_metadata = self._run_gohai_metadata()
            if gohai_metadata:
                payload['gohai'] = gohai_metadata

            payload['systemStats'] = get_system_stats(
                proc_path=self.agentConfig.get('procfs_path', '/proc').rstrip('/')
            )
            payload['meta'] = self._get_hostname_metadata()

            self.hostname_metadata_cache = payload['meta']
            # Add static tags from the configuration file
            host_tags = []
            if self.agentConfig['tags'] is not None:
                host_tags.extend([unicode(tag.strip())
                                 for tag in self.agentConfig['tags'].split(",")])

            if self.agentConfig['collect_ec2_tags']:
                host_tags.extend(EC2.get_tags(self.agentConfig))

            if host_tags:
                payload['host-tags']['system'] = host_tags

            # If required by the user, let's create the dd_check:xxx host tags
            if self.agentConfig['create_dd_check_tags']:
                app_tags_list = [DD_CHECK_TAG.format(c.name) for c in self.initialized_checks_d]
                app_tags_list.extend([DD_CHECK_TAG.format(cname) for cname
                                      in JMXFiles.get_jmx_appnames()])

                if 'system' not in payload['host-tags']:
                    payload['host-tags']['system'] = []

                payload['host-tags']['system'].extend(app_tags_list)

            GCE_tags = GCE.get_tags(self.agentConfig)
            if GCE_tags is not None:
                payload['host-tags'][GCE.SOURCE_TYPE_NAME] = GCE_tags

            # Log the metadata on the first run
            if self._is_first_run():
                log.info("Hostnames: %s, tags: %s" %
                         (repr(self.hostname_metadata_cache), payload['host-tags']))

        # Periodically send extra hosts metadata (vsphere)
        # Metadata of hosts that are not the host where the agent runs, not all the checks use
        # that
        external_host_tags = []
        if self._should_send_additional_data('external_host_tags'):
            for check in self.initialized_checks_d:
                try:
                    getter = getattr(check, 'get_external_host_tags')
                    check_tags = getter()
                    external_host_tags.extend(check_tags)
                except AttributeError:
                    pass

        if external_host_tags:
            payload['external_host_tags'] = external_host_tags

        # Periodically send agent_checks metadata
        if self._should_send_additional_data('agent_checks'):
            # Add agent checks statuses and error/warning messages
            agent_checks = []
            for check in check_statuses:
                if check.instance_statuses is not None:
                    for i, instance_status in enumerate(check.instance_statuses):
                        agent_checks.append(
                            (
                                check.name, check.source_type_name,
                                instance_status.instance_id,
                                instance_status.status,
                                # put error message or list of warning messages in the same field
                                # it will be handled by the UI
                                instance_status.error or instance_status.warnings or "",
                                check.service_metadata[i]
                            )
                        )
                else:
                    agent_checks.append(
                        (
                            check.name, check.source_type_name,
                            "initialization",
                            check.status, repr(check.init_failed_error)
                        )
                    )
            payload['agent_checks'] = agent_checks
            payload['meta'] = self.hostname_metadata_cache  # add hostname metadata
Example #4
0
def get_hostname(config=None):
    """
    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

    # first, try the config
    if config is None:
        from config import get_config
        config = get_config(parse_args=True)
    config_hostname = config.get('hostname')
    if config_hostname and is_valid_hostname(config_hostname):
        return config_hostname

    # Try to get GCE instance name
    gce_hostname = GCE.get_hostname(config)
    if gce_hostname is not None:
        if is_valid_hostname(gce_hostname):
            return gce_hostname

    # Try to get the docker hostname
    if Platform.is_containerized():

        # First we try from the Docker API
        docker_util = DockerUtil()
        docker_hostname = docker_util.get_hostname(use_default_gw=False)
        if docker_hostname is not None and is_valid_hostname(docker_hostname):
            hostname = docker_hostname

        elif Platform.is_k8s():  # Let's try from the kubelet
            try:
                kube_util = KubeUtil()
            except Exception as ex:
                log.error("Couldn't instantiate the kubernetes client, "
                          "getting the k8s hostname won't work. Error: %s" %
                          str(ex))
            else:
                _, kube_hostname = kube_util.get_node_info()
                if kube_hostname is not None and is_valid_hostname(
                        kube_hostname):
                    hostname = kube_hostname

    # then move on to os-specific detection
    if hostname is None:
        if Platform.is_unix() or Platform.is_solaris():
            unix_hostname = _get_hostname_unix()
            if unix_hostname and is_valid_hostname(unix_hostname):
                hostname = unix_hostname

    # if we don't have a hostname, or we have an ec2 default hostname,
    # see if there's an instance-id available
    if not Platform.is_windows() and (hostname is None
                                      or Platform.is_ecs_instance()
                                      or EC2.is_default(hostname)):
        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'
        )

    return hostname