Articles and lessons from Guionardo Furlan.https://guionardofurlan.com.br/enhttps://guionardofurlan.com.br/en/blog/backup-is-not-dr/https://guionardofurlan.com.br/en/blog/backup-is-not-dr/Having backups is not the same as having Disaster Recovery: what real restores revealed about the control plane, PersistentVolumes, OCI images, and offline recovery.Sun, 20 Sep 2026 00:00:00 GMThttps://guionardofurlan.com.br/en/blog/consistent-backups/https://guionardofurlan.com.br/en/blog/consistent-backups/How independent control-plane and PV backups became recovery sets with exact identity and a measured 64-second consistency window.Sun, 20 Sep 2026 00:00:00 GMThttps://guionardofurlan.com.br/en/blog/measuring-disaster-recovery/https://guionardofurlan.com.br/en/blog/measuring-disaster-recovery/How measurable rehearsals and deterministic automation reduced the observed RTO of my K3s cluster from 1h07m09s to 47m03s.Sun, 20 Sep 2026 00:00:00 GMThttps://guionardofurlan.com.br/en/blog/gitops-secrets-infrastructure/https://guionardofurlan.com.br/en/blog/gitops-secrets-infrastructure/GitOps with Flux, secrets with SOPS + age, and reproducible infrastructure: how the repository became the owner of each piece of cluster state.Thu, 17 Sep 2026 00:00:00 GMThttps://guionardofurlan.com.br/en/blog/k3s-homelab-debian-server/https://guionardofurlan.com.br/en/blog/k3s-homelab-debian-server/How a Debian server became a single-node K3s cluster with Traefik, Cloudflare Tunnel, storage, and firewall — without a big-bang migration.Thu, 17 Sep 2026 00:00:00 GMThttps://guionardofurlan.com.br/en/blog/observability/https://guionardofurlan.com.br/en/blog/observability/Metrics, logs, and traces on a single-node cluster: the Prometheus/Loki/Tempo stack, trace_id correlation, and the real cost of observability.Thu, 17 Sep 2026 00:00:00 GMT