Observability
OneAgent: collection methods, installation, Kubernetes and health
Dynatrace collection methods (OneAgent, OpenTelemetry, Prometheus, API), installing OneAgent with host groups, tags and properties, deploying it on Kubern…
Guides & insights
A library for curious minds
Cloud computing
Preparing for the Google Associate Cloud Engineer certification
Preparation guide for the Associate Cloud Engineer: format, the five domains (setup, planning, deployment, operations, access and security), gcloud comman…
Cloud computing
Preparing for the Azure Administrator Associate certification (AZ-104)
Preparation guide for the AZ-104: format, the five domains (identities and governance, storage, compute, network, monitoring), practical skills to acquire…
Cloud computing
Preparing for the AWS Certified Solutions Architect – Associate certification (SAA-C03)
Preparation guide for the AWS Solutions Architect Associate: format, the four domains (security, resilience, performance, costs), reference architectures …
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
Processes, memory and performance: monitoring and troubleshooting a Linux server
Understand and control Linux processes (ps, top, signals, nice, jobs), interpret load, memory and I/O (free, vmstat, iostat), diagnose with lsof and strac…
Systems & Linux
Backup, monitoring and troubleshooting of a Linux server
Operate a Linux server day to day: 3-2-1 backup strategy with rsync, tar, LVM snapshots and restic, restore tests, monitoring (node_exporter, centralized …
Observability
Datasets, experiments and prompts with Phoenix
Improve an LLM application methodically: build datasets from traces, run experiments, compare prompt or model versions, and version prompts with the playg…
Observability
Analyzing profiles in Grafana: flame graphs, comparisons and diagnostics
A method for analyzing profiles in Grafana: Profiles Drilldown, flame graph and top table, comparing two periods (diff), memory and lock profiles, real di…
Observability
Grafana Alloy: Introduction and Architecture
Discover the fundamental concepts of Grafana Alloy, the transition from the static Agent to Alloy, its internal architecture based on programmable pipelin…
Proxy & networking
Mastering ACLs in HAProxy: the complete guide
A complete guide to HAProxy ACLs: learn how to configure smart routing, IP-based access control, geolocation, and header and User-Agent analysis to secure…
Proxy & networking
Mastering ACLs in HAProxy
A complete guide to HAProxy ACLs: learn how to configure smart routing, IP-based access control, geolocation, and header and User-Agent analysis to secure…
Learning never stops