Systems & Linux
Packages, systemd services, logs and scheduled tasks
Install and update software with apt and dnf, manage services with systemctl, write a systemd unit, read logs with journalctl and schedule tasks with cron…
Guides & insights
A library for curious minds
Observability
Datadog APM and OpenTelemetry: traces, services and correlation with logs
Instrument applications for Datadog APM (dd-trace, single step instrumentation, OpenTelemetry), use the service map and traces, and link logs and traces.
Containers
Kubernetes: exposing your applications (Services, Ingress and Gateway API)
Expose applications in Kubernetes: ClusterIP/NodePort/LoadBalancer Services, Ingress, IngressClass, TLS with cert-manager, annotations, Gateway API and tr…
Observability
Service types in Dynatrace: web, database, messaging, custom and unified services
What a service is for Dynatrace, the automatically detected service types (web requests, web services, databases, messaging, remote calls, unified service…
Observability
Differences between Technologies and Services in Dynatrace
In Dynatrace, the concepts of 'Technology' and 'Services' help organize and monitor application performance. Here is a detailed explanation of the differe…
Cloud computing
Stop moving to the Cloud, to micro-services...
I will certainly shock more than one person in this article, but don't hesitate to read to the end and then leave comments.
Systems & Linux
Kubernetes Services: ClusterIP, NodePort, LoadBalancer and ExternalName
Kubernetes Services explained: the role of a Kubernetes service, the ClusterIP, NodePort, LoadBalancer and ExternalName types, selectors, endpoints and be…
Observability
Accessing the Dynatrace playground and getting started
The Dynatrace playground is a demo environment full of real data: how to access it, what it allows and does not allow, a guided discovery tour (Kubernetes…
Observability
Application Observability in Grafana Cloud
Monitor services with OpenTelemetry data: RED, service maps, linked traces and logs.
Cloud computing
Understanding AWS: global infrastructure, accounts, tools and pricing
The essential basics for getting started with Amazon Web Services: regions, availability zones and points of presence, accounts and organization, console,…
Cloud computing
IAM: identities, roles and policies on AWS
Secure access to AWS with IAM: users, groups, roles and JSON policies, permission evaluation, MFA, IAM Identity Center for humans, roles for applications,…
Cloud computing
AWS networking: VPC, subnets, routing and security
Design an AWS network: VPCs and CIDR ranges, public and private subnets, route tables, Internet and NAT gateways, security groups and NACLs, endpoints, pe…
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