Datadog Metrics

Before starting

• You can send events from a central server, a remote server or a poller.
• By default, this stream connector sends metrics from host_status and service_status events. The event format is shown there.
• Aformentioned events are fired each time a host or a service is checked. Various parameters let you filter out events.

Installation

Login as root on the Centreon central server using your favorite SSH client.

Run the command according on your system:

Alma / RHEL / Oracle Linux 8

dnf install centreon-stream-connector-datadog

Alma / RHEL / Oracle Linux 9

dnf install centreon-stream-connector-datadog

Debian_11

apt install centreon-stream-connector-datadog

Configuration

To configure your stream connector, you must head over the Configuration --> Poller --> Broker configuration menu. Select the central-broker-master configuration (or the appropriate broker configuration if it is a poller or a remote server that will send events) and click the Output tab when the broker form is displayed.

Add a new generic - stream connector output and set the following fields as follow:

Field	Value
Name	Datadog metrics
Path	/usr/share/centreon-broker/lua/datadog-metrics-apiv2.lua
Filter category	Neb

Add Datadog mandatory parameters

Each stream connector has a set of mandatory parameters. To add them you must click on the +Add a new entry button located below the filter category input.

Type	Name	Value explanation	Value exemple
string	api_key	the datadog api key

Add Datadog optional parameters

Some stream connectors have a set of optional parameters dedicated to the Software that are associated with. To add them you must click on the +Add a new entry button located below the filter category input.

Type	Name	Value explanation	default value
string	datadog_centreon_url	your centreon server address	http://yourcentreonaddress.local
string	datadog_metric_endpoint	the API endpoint that must be used to send metrics	/api/v1/series
string	http_server_url	The Datadog API hosting server address	https://api.datadoghq.com
string	logfile	the file in which logs are written	/var/log/centreon-broker/datadog-metrics.log
number	log_level	logging level from 1 (errors) to 3 (debug)	1

Standard parameters

All stream connectors can use a set of optional parameters that are made available through Centreon stream connectors lua modules.

All those parameters are documented here

Some of them are overridden by this stream connector.

Type	Name	Default value for the stream connector
string	accepted_categories	neb
string	accepted_elements	host_status,service_status
number	max_buffer_size	30
number	hard_only	0
number	enable_service_status_dedup	0
number	enable_host_status_dedup	0
string	metric_name_regex	[^a-zA-Z0-9_%.]
string	metric_replacement_character	_

Event bulking

This stream connector is compatible with event bulking. Meaning that it is able to send more that one event in each call to the Datadog REST API.

The default value for this stream connector is 30. A small value is more likely to slow down the Centreon broker thus generating retention.

Type	Name	Value
number	max_buffer_size	more than one

Event format

This stream connector will send event with the following format.

service_status event

{
  "host": "my_host",
  "metric": "database.used.percent",
  "points": [[1630590530, 80]],
  "tags": [
    "service:my_service",
    "instance:my_instance",
    "subinstance:sub_1",
    "subinstance:sub_2"
  ]
}

host_status event

{
  "host": "my_host",
  "metric": "database.used.percent",
  "points": [[1630590530, 80]],
  "tags": [
    "instance:my_instance",
    "subinstance:sub_1",
    "subinstance:sub_2"
  ]
}

Custom event format

You can"t change the format of the event for metrics oriented stream connectors.

Curl commands

Here is the list of all the curl commands that are used by the stream connector.

Send events

curl -X POST -H "content-type: application/json" -H "DD-API-KEY: <api_key>" '<http_server_url><datadog_metric_endpoint>' -d '{"host":"my_host","metric":"database.used.percent","points":[[1630590530,80]],"tags":["service:my_service","instance:my_instance","subinstance:sub_1","subinstance:sub_2"]}'

You must replace all the <xxxx> inside the above command with their appropriate value. <http_server_url> may become https://api.datadoghq.com.