August 19, 2024

Things That I Discovered

1. Logging in Caddy Server

• It's been a long since I've run Caddy Server, but hardly used any logging, thought of exploring logs which is easy to setup.

• Logging in Caddyfile:

  example.domain.com {
      reverse_proxy localhost:8080
      log {
          output file /var/log/caddy/example.domain.com-access.log
      }
  }

• Reference: Log Caddyfile Directive - Caddy Server Documentation

• To avoid repeating the same log block again, and we can use snippets instead.

• Logging using Snippets in Caddyfile:

  (logging) {
      log {
          output file /var/log/{args[0]}-access.log
      }
  }
  example.domain.com {
      reverse_proxy localhost:8080
      import logging example.domain.com
  }

• Reference: Snippets Caddyfile Directive - Caddy Server Documentation

2. Getting Started with Grafana Loki & Promtail

• Today I explored Grafana Loki and Promtail as part of my effort to streamline log access from my remote servers.
• Grafana Loki: A horizontally scalable, highly available, multi-tenant log aggregation system inspired by Prometheus.

• Promtail: An agent that ships the contents of local logs to a private Loki instance, scraping logs and labeling them for efficient querying.

• This setup will significantly improve my ability to monitor and analyze logs from various servers in a centralized and organized manner.