Grafana Loki 日志收集与 Promtail 配置实战

promtail-config.yaml： ``` server: http_listen_port: 9080 grpc_listen_port: 0 positions: filename: /var/log/positions.yaml clients: - url: http://loki:3100/loki/api/v1/push scrape_configs: - job_name: varlogs static_configs: - targets: [localhost] labels: job: varlogs host: node-1 __path__: /var/log/*.log ``` 示例查询（LogQL）： ``` {job="varlogs",host="node-1"} |= "ERROR" ```