搭建一个简单的日志监控平台~

Promtail 是代理，负责收集日志并将其发送给 loki 。

Loki 是主服务器，负责存储日志和处理查询 。

Grafana 用于 UI 展示。

环境部署

promtail-config.yaml

yaml
server:
  http_listen_port: 9080

positions:
  filename: /tmp/positions.yaml

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

scrape_configs:
  - job_name: docker

    pipeline_stages:
      - docker: {}

      # ✅ 从日志路径中提取 container_id
      - regex:
          expression: '/images/docker/containers/(?P<container_id>[a-f0-9]+)/.*\.log'

      # ✅ 把 container_id 提升为 label
      - labels:
          container_id:

    static_configs:
      - targets:
          - localhost
        labels:
          job: docker
          __path__: /images/docker/containers/*/*.log

注：我的 Docker 目录迁移了，/images/docker 改为自己的 Docker 目录

docker-compose.yaml

yaml
services:
  loki:
    image: grafana/loki:2.9.0
    ports:
      - "3100:3100"

  promtail:
    image: grafana/promtail:2.9.0
    volumes:
      # - /images/docker/containers:/var/lib/docker/containers:ro
      - /images/docker/containers:/images/docker/containers:ro
      - /var/run/docker.sock:/var/run/docker.sock
      - ./promtail-config.yaml:/etc/promtail/config.yml

  grafana:
    image: grafana/grafana:latest
    ports:
      - "3101:3000"
    volumes:
      - ./grafana-data:/var/lib/grafana

docker compose up -d

使用

进入 3101 端口 Grafana，默认账号密码 admin/admin

配置 Connections

Save & test

测试

配置 Dashboard