https://collectd-web.com/blog/welcome-to-collectd-web 2026-04-01 monthly 0.6 https://collectd-web.com/blog/setting-up-collectd-web-on-debian 2026-03-18 monthly 0.6 https://collectd-web.com/blog/monitoring-multiple-hosts 2026-02-22 monthly 0.6