Home – mig5 system administration

'So, what is it you exactly do?' - Part two, config management – mig5 system administration

Part two of the series: how config management (Puppet, in the author's case) enforces a known state across infrastructure and pays for itself in avoided firefighting.

'So, what is it you exactly do?' - Part three, security – mig5 system administration

Part three of the series: security as risk management - firewalls and intrusion detection, ISO 27001, timely patching, and the common pitfalls agencies fall into.

'So, what is it you exactly do?' - Part six, high availability – mig5 system administration

Part six of the series: high availability - single points of failure, quorum, STONITH, and why most clients probably don't need HA as badly as they think.

'So, what is it you exactly do?' - Part seven, communication – mig5 system administration

Part seven (the conclusion) of the series: communication - building trust, incident reports, the plan and the rollback plan, and why customers hate silence more than bad news.

'So, what is it you exactly do?' - Part one, continuous deployment – mig5 system administration

The first part of a seven-part series on what a contract sysadmin actually does, focused on continuous deployment: why automating change reduces risk and shifts developer culture.

'So, what is it you exactly do?' - Part four, monitoring – mig5 system administration

Part four of the series: monitoring as the difference between catching a chain of failures at 4:30am and discovering a leaked database on pastebin two months later.

'So, what is it you exactly do?' - Part five, troubleshooting – mig5 system administration

Part five of the series: troubleshooting - part science, part intuition, and the difference between a sysadmin who can read an error and one who can read a pattern.

A private AI assistant over Signal – mig5 system administration

How to wire signal-cli-rest-api into Node-RED with Ollama and Regolo to text a local LLM from your phone.

Starting a Qube and its dependencies in Qubes OS – mig5 system administration

How to use a small dom0 Python script to start a Qubes OS qube and all its declared dependencies - Split SSH vaults, service qubes, or anything else Qubes doesn't track - in the right order, with cycle and missing-qube …

Publishing a directory of files to IPFS with Python – mig5 system administration

How IPFS content addressing works, why publishing a whole directory is harder than a single file, and a working Python script that POSTs multiple files to the go-ipfs HTTP API as one folder.

News – mig5 system administration

Project notes, history, and release notes for the tools I build.

BoatRules.au: a marine licence practice test that keeps you on your toes – mig5 system administration

I sat my Victorian marine licence test recently and passed - but the fixed official practice tests bugged me. So I built BoatRules.au: a study quiz that shuffles questions and answers every sitting, mixes playable horn …

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http://yvhz3ofkv7gwf5hpzqvhonpr3gbax2cc7dee3xcnt7dmtlx2gu7vyvid.onion/static/mig5.asc

Services – mig5 system administration

Contract sysadmin services: reliability, automation, security, and high availability.

JinjaTurtle – mig5 system administration

Generate Jinja2 templates and Ansible vars from native config files.

Enroll – mig5 system administration

Reverse-engineering servers into Ansible roles/playbooks.

cspresso – mig5 system administration

Brew a Content Security Policy from real page loads.

Bouquin – mig5 system administration

An encrypted notebook and planner app using SQLCipher.

Projects – mig5 system administration

Open-source tools and side projects I build and use in real sysadmin work.

News – mig5 system administration

Project notes, history, and release notes for the tools I build.

Contact – mig5 system administration

Contact mig5 system administration.

About – mig5 system administration

About Miguel Jacq - sysadmin and DevSecOps consultant.

Home – mig5 system administration

DevSecOps & sysadmin consulting: automation, reliability, security, and high availability.