config file for promtail to monitor nginx logs

promtail-config.yaml

server:
  http_listen_port: 9080
  grpc_listen_port: 0

positions:
  filename: /etc/promtail/positions.yaml

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

scrape_configs:
- job_name: nginx
  static_configs:
  - targets:
      - localhost
    labels:
      job: nginx
      hostname: your-hostname
      __path__: /var/log/nginx/*.log