[Elasticsearch] "The [index] request must be terminated by a newline [\n]"

postman으로 elasticsearch post 명령어를 날리는데 자꾸 개행 문자 관련 에러가 발생하였다.

 

{
    "error": {
        "root_cause": [
            {
                "type": "illegal_argument_exception",
                "reason": "The msearch request must be terminated by a newline [\n]"
            }
        ],
        "type": "illegal_argument_exception",
        "reason": "The msearch request must be terminated by a newline [\n]"
    },
    "status": 400
}

body 부분에서 JSON(application/json) new line이 시작될때 엔터를 쳐서 개행을 만들어줘야 한다.

변경 전

{"index":"classes-*","ignore_unavailable":true,"preference":1555916089901}
{"aggs":{"devId":{"cardinality":{"field":"devId.keyword"}}},"size":0,"_source":{"excludes":[]},"stored_fields":["*"],"script_fields":{},"docvalue_fields":[{"field":"@timestamp","format":"date_time"},{"field":"time","format":"date_time"}],"query":{"bool":{"must":[{"match_all":{}},{"match_all":{}},{"range":{"@timestamp":{"gte":1555340400000,"lte":1555945199000,"format":"epoch_millis"}}}],"filter":[],"should":[],"must_not":[]}},"timeout":"30000ms"}

변경 후

{"index":"classes-*","ignore_unavailable":true,"preference":1555916089901}

{"aggs":{"devId":{"cardinality":{"field":"devId.keyword"}}},"size":0,"_source":{"excludes":[]},"stored_fields":["*"],"script_fields":{},"docvalue_fields":[{"field":"@timestamp","format":"date_time"},{"field":"time","format":"date_time"}],"query":{"bool":{"must":[{"match_all":{}},{"match_all":{}},{"range":{"@timestamp":{"gte":1555340400000,"lte":1555945199000,"format":"epoch_millis"}}}],"filter":[],"should":[],"must_not":[]}},"timeout":"30000ms"}