一、配置

server:
  http_listen_port: 9080
  grpc_listen_port: 0

positions:
  filename: /tmp/positions.yaml

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

scrape_configs:
  - job_name: demo
    static_configs:
      - targets:
          - 172.16.0.9 # 应用机器地址
        labels:
          name: demo-test # 应用名称
          __path__: /root/logs/demo-*/spring.log # 应用日志文件地址
    pipeline_stages:
      - match:
          selector: '{name="demo-test"}' # 要匹配的应用名称
          stages:
            - multiline:
                firstline: '^\d{4}-\d{2}-\d{2}' # 匹配日志的正则表达式
                max_wait_time: 3s

二、效果图