Automation
Vagrant plugins: extending providers, provisioners and commands
Understand Vagrant's plugin system: what a plugin can add (provider, provisioner, command, capability), installing and managing plugins, and the most usef…
Guides & insights
A library for curious minds
Observability
OpenTelemetry semantic conventions (semconv): naming telemetry
Understand and apply OpenTelemetry semantic conventions: resource, HTTP, database, messaging and GenAI attributes, span and metric names, units, stability…
Systems & Linux
Linux administration best practices
Checklist for administering Linux servers: accounts and sudo, SSH, updates, systemd services, storage, network and firewall, tested backups, monitoring, a…
Observability
Elasticsearch distributed architecture: node roles, shards, replicas and allocation
Understand how Elasticsearch works as a distributed system: node roles, master nodes and quorum, cluster state, primary shards and replicas, allocation an…
Observability
Snapshot Lifecycle Management: automated backups, restore and disaster recovery
Protect Elasticsearch data: snapshot repositories (S3, GCS, Azure, file system), SLM policies with retention, partial or full restore, restore tests and a…
Observability
AppEngine and custom Dynatrace apps
Build apps on the Dynatrace platform with AppEngine: Dynatrace App Toolkit, React interface and the Strato design system, app functions, Grail queries, pe…
Observability
Diagnosing with bpftrace and the bcc tools
Everyday eBPF diagnostic tools: bpftrace one-liners (system calls, files, latencies), bcc tools (execsnoop, opensnoop, biolatency, tcplife) and bpftool.
Observability
Fluent Bit: pipeline, configuration and essential plugins
Fluent Bit concepts (inputs, parsers, filters, tags and match, buffer, outputs), YAML configuration, and the must-have plugins: tail, systemd, kubernetes,…
Observability
Fluent Bit or Vector? Choosing, combining and migrating
Compare Fluent Bit and Vector (performance, transformations, ecosystem, governance), combine them as agent and aggregator, and migrate from Fluentd or Log…
Automation
Linux vs Unix: the complete guide to commands and distributions
Understand the differences between Linux and Unix, explore distributions (server, desktop, lightweight), security (SELinux, AppArmor) and systemd, and mas…
Proxy & networking
HAProxy cheat sheet: the essential commands
A practical guide gathering all the essential commands to install, manage, test and debug HAProxy day to day (CLI, systemd, Docker and Runtime API).
Observability
Grafana Loki vs Elasticsearch: the battle of log storage
A comparison between Loki, the Prometheus-inspired log system, and Elasticsearch, the reference full-text search engine.
Learning never stops