1. ##注意 ingets需要开启
    2. PUT _ingest/pipeline/my_timestamp_pipeline
    3. {
    4.   "description": "Adds a field to a document with the time of ingestion",
    5.   "processors": [
    6.     {
    7.       "set": {
    8.         "field": "ingest_timestamp",
    9.         "value": "{{_ingest.timestamp}}"
    10.       }
    11.     }
    12.   ]
    13. }
    16. PUT pa_log_clean_with_time
    17. {
    18.   "settings": {
    19.     "default_pipeline": "my_timestamp_pipeline"
    20.   }
    21. }