Observability
Installing Fleet Server and enrolling Elastic Agents
Set up Fleet Server, create a policy, enroll Linux, Windows and Docker agents, understand tokens and certificates, and install in standalone mode.
Guides & insights
A library for curious minds
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
Linux server security and hardening
Harden a Linux server: least privilege, updates, secure SSH, firewall, fail2ban, SELinux and AppArmor, sysctl, auditd, authentication logs, file integrity…
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
Installing Bindplane: server, BDOT Collector and OpAMP connection
Install the Bindplane server (Docker Compose, Linux, Kubernetes), connect BDOT collectors via OpAMP on Linux, Docker and Kubernetes, and use the CLI.
Proxy & networking
The ACME protocol: ACME server, http-01 and dns-01 challenges, TLS automation
Understand the ACME protocol: the role of the ACME server (Let's Encrypt, ZeroSSL, step-ca), the http-01 (/.well-known/acme-challenge), dns-01 and tls-alp…
Cloud computing
Serverless computing: definition, FaaS and use cases
Serverless computing explained: Function as a Service (FaaS), how it works, advantages, limits (cold start, costs) and use cases, with AWS Lambda, Azure F…
Systems & Linux
Jobs vs Serverless
A comparison between Kubernetes Jobs and the serverless model for running background tasks. An exploration of the differences between Kubernetes Jobs and …
Observability
OpenTelemetry and Elasticsearch: compatibility and architecture
Send OpenTelemetry to Elasticsearch: Collector and elasticsearch exporter, managed OTLP endpoint, APM Server, EDOT distribution, native OTel or ECS storag…
Observability
Elastic Agent: architecture, Fleet and integrations
Understand Elastic Agent: single collection agent, Fleet and Fleet Server, agent policies, integrations, data streams, outputs, and managed versus standal…
Observability
Elastic Agent or Beats? Choosing and migrating
Compare Elastic Agent and Beats (Filebeat, Metricbeat, Winlogbeat), know when to keep Beats, and migrate step by step without losing data.
Observability
Agent policies, integrations, data streams and pipelines
Build agent policies, add integrations (System, Nginx, Custom Logs), choose namespaces, customise ingestion with @custom pipelines and processors, and man…
Learning never stops