Church of the Eternal Cluster

Projects we support

Open-source tools for reliable computer systems that the association supports and showcases. Built by Vid Košir; the code is public on GitHub.

What others charge for, here it's open and free

Comparable commercial solutions for these tasks typically cost this much per year. These tools are open source.

Fleet compliance & patch automation≈ €100–300 / node / year→free
EOL Linux patching≈ €40–65 / server / year→free
Kubernetes cost monitoringfrom ≈ €5,000 / year→free

Figures are market ranges for comparable tasks, not any single product's price. The tools cover a focused subset without support or SLA.

Example: what you'd pay elsewhere

What these tasks would cost elsewhere per year.

50 servers≈ 10,000 € / year→0 €
100 servers≈ 20,000 € / year→0 €
200 servers≈ 40,000 € / year→0 €
500 servers≈ 100,000 € / year→0 €

Calculated at ≈ €200 per server per year — the midpoint of the €100–300 range.

Linux Fleet Toolkit — agentless SSH tools for Linux fleets

FLEETLinux Fleet Toolkit

Overview of the whole agentless SSH toolkit for Linux fleets. Every tool runs without an agent, over plain SSH, and produces clear reports.

FLEETLinux Fleet Audit

Audit an entire Linux fleet over SSH into a single Excel report. Collects inventory, packages and settings without installing anything on the servers.

FLEETLinux Fleet Harden

Interactive system hardening with human approval of each step and full rollback. It shows every change before applying it.

FLEETLinux Fleet Patch

Staged dnf patching with serialized, batched reboots. The fleet updates in a controlled way, without taking every server down at once.

FLEETLinux Fleet Certs

Fleet-wide scan of TLS/PKI certificate expiry. Flags certificates that are about to expire before they cause an outage.

FLEETLinux Fleet Users

Account and access lifecycle audit. Finds forgotten, inactive and risky accounts across every server.

FLEETLinux Fleet Drift

Configuration drift detection across the fleet. Shows what has changed since the last known-good state.

FLEETLinux Fleet Firewall

firewalld audit and reconciliation across the fleet. It won't let you accidentally firewall off your own SSH access.

FLEETLinux Fleet Disk Space

Disk and inode reclaim over SSH. Safely clears what's surplus, and truncates rather than deletes.

FLEETLinux Fleet MOTD Editor

Live login banners (MOTD) across the fleet. Every server tells you clearly what it actually is at login.

FLEETLinux Fleet Apply

The shared executor that runs every plan and re-checks state before each action. The heart of the whole toolkit.

Kubernetes & OpenShift

K8SCoRepair

OpenShift subscription right-sizing and honest cost cases. Shows where you overpay, and by how much.

K8SPV Doctor

Diagnose stuck Kubernetes PersistentVolumes safely. Tells you why something is stuck Pending, without risky changes.

K8Srbacspy

Trace who can actually do what in Kubernetes RBAC. Reveals the real paths to dangerous permissions, like who can delete prod.

K8Scertwatch

Reconcile cluster certificates with the public edge. Catches the case where the dashboard is green but the edge cert has already expired.

Legacy & end-of-life

EOLcentos-eol-patch

Patch End-of-Life CentOS safely, with an audit trail. Keeps systems secure until you can migrate, and documents every fix.

All tools are open source. Code: github.com/vikozs.

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