Service Check Submission: Agent Check

To submit a service check to Datadog within a custom Agent check, use the predefined service_check() function in the AgentCheck class.

self.service_check(name, status, tags=None, hostname=None, message=None)

Find below the different parameters and data types available for the service_check() function:

Parameter	Type	Required	Default Value	Description
`name`	string	yes	-	The name of the service check.
`status`	int	yes	-	A constant describing the service status: `0` for OK, `1` for Warning, `2` for Critical, and `3` for Unknown.
`tags`	list of strings	no	`None`	A list of tags to associate with this Service Check.
`hostname`	string	no	current host	A hostname to associate with this Service check. Defaults to the current host.
`message`	string	no	`None`	Additional information or a description of why this status occurred.

Example

Here is an example of a dummy Agent check sending only one service check periodically. See Writing a Custom Agent Check to learn more.

Create a new directory, service_check_example.d/, in the conf.d/ folder of your Agent.
In your service_check_example.d/ folder, create an empty configuration file named service_check_example.yaml with the following content:
```
instances: [{}]
```
Up one level from the conf.d/ folder, go to the checks.d/ folder.

Within this folder, create a custom check file named service_check_example.py with the content below:

service_check_example.py

from datadog_checks.base import AgentCheck

__version__ = "1.0.0"

class MyClass(AgentCheck):
    def check(self, instance):
        self.service_check('example_service_check', 0, message='Example application is up and running.')
    

Restart the Agent

Ensure that your custom check is correctly running with the Agent status command. You should see something like this:

=========
Collector
=========

  Running Checks
  ==============

    (...)

    service_check_example (1.0.0)
    -----------------------------
      Instance ID: service_check_example:d884b5186b651429 [OK]
      Total Runs: 1
      Metric Samples: Last Run: 0, Total: 0
      Events: Last Run: 0, Total: 0
      Service Checks: Last Run: 1, Total: 1
      Average Execution Time : 2ms

    (...)

Finally, see your Datadog service check summary to see your service check reporting:

Service Check Submission: Agent Check

Example

Further reading