Host

To configure this check for an Agent running on a host:

1. Edit the yarn.d/conf.yaml file in the conf.d/ folder at the root of your Agent’s configuration directory.

   init_config:
   
   instances:
     ## @param resourcemanager_uri - string - required
     ## The YARN check retrieves metrics from YARNS's ResourceManager. This
     ## check must be run from the Master Node and the ResourceManager URI must
     ## be specified below. The ResourceManager URI is composed of the
     ## ResourceManager's hostname and port.
     ## The ResourceManager hostname can be found in the yarn-site.xml conf file
     ## under the property yarn.resourcemanager.address
     ##
     ## The ResourceManager port can be found in the yarn-site.xml conf file under
     ## the property yarn.resourcemanager.webapp.address
     #
     - resourcemanager_uri: http://localhost:8088
   
       ## @param cluster_name - string - required - default: default_cluster
       ## A friendly name for the cluster.
       #
       cluster_name: default_cluster
   

   See the example check configuration for a comprehensive list and description of all check options.

2. Restart the Agent to start sending YARN metrics to Datadog.

Containerized

For containerized environments, see the Autodiscovery Integration Templates for guidance on applying the parameters below.

Log collection

1. Collecting logs is disabled by default in the Datadog Agent, enable it in your datadog.yaml file:

   logs_enabled: true
   

2. Uncomment and edit the logs configuration block in your yarn.d/conf.yaml file. Change the type, path, and service parameter values based on your environment. See the sample yarn.d/conf.yaml for all available configuration options.

   logs:
     - type: file
       path: <LOG_FILE_PATH>
       source: yarn
       service: <SERVICE_NAME>
       # To handle multi line that starts with yyyy-mm-dd use the following pattern
       # log_processing_rules:
       #   - type: multi_line
       #     pattern: \d{4}\-\d{2}\-\d{2} \d{2}:\d{2}:\d{2},\d{3}
       #     name: new_log_start_with_date
   

3. Restart the Agent.

To enable logs for Docker environments, see Docker Log Collection.