Datadog Agent - Custom Logs

1) Install the Datadog Agent with the single line install (replace the API key with your API key)
2) Configure the Datadog Agent Configuration file at: /etc/datadog/datadog-agent.yaml (replace the API key with your API key)

# api key - https://app.datadoghq.com/organization-settings/api-keys
api_key: <api_key>

# datadog site 
site: datadoghq.com

# logs
logs_enabled: true
logs_config:
  use_compression: true
  compression_level: 6
  batch_wait: 5
  open_files_limit: 200

# agent configuration view in the datadog UI - https://docs.datadoghq.com/infrastructure/list/#agent-configuration
inventories_configuration_enabled: true

# live processes - https://docs.datadoghq.com/infrastructure/process/?tab=linuxwindows
process_config:
  process_collection:
    enabled: "true"
    
3) Make a new directory in /etc/datadog-agent/conf.d for your custom application 
mkdir /etc/datadog-agent/conf.d/CUSTOM_APPLICATION.d

4) Create a new conf.yaml file in the new directory you just created to send custom application log files: eg. vi /etc/datadog-agent/conf.d/CUSTOM_APPLICATION.d/conf.yaml
logs:
  - type: file
    path: "<PATH_LOG_FILE>/<LOG_FILE_NAME>.log"
    service: "<APP_NAME>"
    source: "<APP_NAME>"
    
5) Restart the Datadog Agent with sudo systemctl restart datadog-agent