Observability
Elastic path project: centralising and using logs
The validation project of the "Elastic Stack mastery" path: Elastic Agent and Fleet, Logstash, Elasticsearch (data streams, ILM), Kibana (ES|QL, Lens, ale…
Guides & insights
A library for curious minds
Observability
Mimir: the write path (distributor, ingesters, replication and HA deduplication)
How Mimir ingests metrics: remote_write, distributor validation and limits, hash ring, ingester replication, WAL, 2h blocks and deduplication of Prometheu…
Observability
Mimir: the read path (query-frontend, querier, store-gateway and caches)
How Mimir answers a PromQL query: query-frontend splitting and caching, queue, queriers, store-gateway, index-headers and memcached caches.
Cloud computing
Preparing for the Microsoft Azure Fundamentals certification (AZ-900)
Preparation guide for the AZ-900: format, the three domains and their weightings, notions to master per domain, the Microsoft Learn path, a three-week stu…
Systems & Linux
The Bash shell and files: navigation, redirections, pipes and text processing
Master the Linux command line: paths, file handling, wildcards, redirections, pipes, searching with find and grep, text processing with sed, awk, sort and…
DevOps
Platform engineering, FinOps and AI: the new frontiers of DevOps
Understand how DevOps is evolving: platform engineering and internal developer platforms (IDP), golden paths, Backstage, developer experience, FinOps and …
Observability
Dynatrace: definitions, architecture and Davis artificial intelligence
The basic concepts of Dynatrace (entities, Smartscape, PurePath, Davis) and its architecture: OneAgent, ActiveGate, SaaS or Managed cluster, and the role …
Observability
Analyzing user experience in Dynatrace: sessions, traces, analysis and USQL
Use digital experience (DEM) data: Apdex and Core Web Vitals, user sessions, service flows, distributed traces, caller analysis, multidimensional analysis…
Observability
Collecting with Zabbix: items, preprocessing, discovery and templates
Item types (agent, SNMP, HTTP agent, calculated, dependent), preprocessing (JSONPath, regular expressions, Prometheus), low-level discovery (LLD), macros …
Observability
Analyzing traces in the Jaeger interface
Search for traces, read a timeline, spot the critical path, compare two traces, use the dependency graph and Service Performance Monitoring (SPM).
Containers
kubectl cheat sheet: the essential commands
All the kubectl commands you need day to day: contexts, resources, logs, exec, port-forward, rollouts, debug, JSONPath, labels, resources and troubleshoot…
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…
Learning never stops