json - 如何用 Promtail 解析日志文件？

Question

我想使用 Promtail > Loki > Grafana。我的日志文件如下所示：

{"asctime": "2006-01-02T15:04:05.999999999-07:00", "levelname": "INFO", "module": "blocking_connection", "funcName": "__init__", "lineno": 1246, "message": "Created channel=1"}
{"asctime": "2006-01-02T15:04:06.999999999-07:00", "levelname": "INFO", "module": "publisher", "funcName": "info", "lineno": 18, "message": "Connect to channel"}
{"asctime": "2006-01-02T15:04:07.999999999-07:00", "levelname": "INFO", "module": "publisher", "funcName": "info", "lineno": 18, "message": "Send to"}

我的 Promtail 配置：

server:
  http_listen_port: 9080
  grpc_listen_port: 0

positions:
  filename: /tmp/positions.yaml

clients:
  - url: http://loki:3100/loki/api/v1/push

scrape_configs:
- job_name: system
  pipeline_stages:
  - json:
      expressions:
        messange: message
        timestamp: asctime
        funcName: funcName
  - timestamp:
      source: timestamp
      format: RFC3339Nano
  static_configs:
  - targets:
      - localhost
    labels:
      job: varlogs
      __path__: /home/my_name/*log

为什么graphana看不到数据？

我试图阅读系统日志，一切正常，但没有 json。