Linux

The Ansible Tour, Part 6: Monitoring – Exporters, Prometheus, Grafana and a Monit Watchdog

Illustration for the Ansible Tour series

The Ansible Tour, Part 6: Monitoring – Exporters, Prometheus, Grafana and a Monit Watchdog

raphael 19. October 2026

Part 6 of the Ansible Tour: how metrics flow, how the watchdog decides when to mail, and...

The Ansible Tour, Part 2: The Platform – From a Bare AlmaLinux to a Kubernetes Cluster

Illustration for the Ansible Tour series

The Ansible Tour, Part 2: The Platform – From a Bare AlmaLinux to a Kubernetes Cluster

raphael 15. October 2026

Part 2 of the Ansible Tour: packages, kernel settings, mail, nightly updates, K3s, Helm, cert-manager, ingress and...

The Ansible Tour, Part 1: One Repository, Three Servers – How the Code Is Organised and What Happens During a Run

Illustration for the Ansible Tour series

The Ansible Tour, Part 1: One Repository, Three Servers – How the Code Is Organised and What Happens During a Run

raphael 14. October 2026

Part 1 of a tour through my Ansible code: how one repository and 34 roles run a...

A Mail for Every SSH Login: A Two-Minute Tripwire with wtmp and systemd

Illustration for the article on a mail for every SSH login

A Mail for Every SSH Login: A Two-Minute Tripwire with wtmp and systemd

raphael 14. October 2026

A mail for every interactive SSH login within two minutes: a systemd timer reading wtmp, quiet for...

RAIDZ1 NAS Addendum: How Scrub and Trim Actually Get Scheduled — and the Alert That Wasn’t

Illustration of OpenZFS scrub and trim scheduling

RAIDZ1 NAS Addendum: How Scrub and Trim Actually Get Scheduled — and the Alert That Wasn’t

raphael 2. September 2026

A short follow-up to the RAIDZ1 NAS build. The cheatsheet in that post gave you zpool scrub...

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