On DIS Agent, set directoryRecursionEnabled to true. For example, the following configuration can match /home/one.log, /home/child/two.log, and /home/child/child/three.log:
--- region: REGION ak: YOUR_AK sk: YOUR_SK projectId: YOUR_PROJECTID endpoint: ENDPOINT flows: - DISStream: YOUR_STREAM filePattern: /home/*.log directoryRecursionEnabled: true initialPosition: START_OF_FILE maxBufferAgeMillis: 5000