Containers, orchestration, cloud infrastructure, and the practices that keep production reliable.
A complete walkthrough restricting which pods can talk to which — Kubernetes allows all pod-to-pod traffic by default, and NetworkPolicies are how you actually change that.
A complete walkthrough setting up ArgoCD so a Git repository becomes the single source of truth for your cluster state — deploy by merging, not by running kubectl commands manually.
A complete walkthrough building a Helm chart for a simple application — templates, values, and the conventions that make a chart genuinely reusable rather than a one-off wrapper around raw YAML.
A complete walkthrough deploying Prometheus to scrape cluster metrics and Grafana to visualize them — the standard monitoring pairing across the cloud-native ecosystem.
A helm upgrade fails partway, or a release gets stuck in 'pending-upgrade' state, blocking every subsequent operation on it. Here's how to actually recover instead of getting stuck retrying the same failing command.
A pod can't start because Kubernetes can't pull its container image — the fix depends entirely on which of a handful of specific causes is actually responsible, from a typo to a private registry auth problem.
A pod stuck Pending means the scheduler couldn't place it anywhere — here's how to read the actual reason from pod events instead of guessing at resource, taint, or affinity problems.
Accepted on May 9, 2016, Prometheus became the CNCF's second project after Kubernetes itself — an early, deliberate signal that observability, not just orchestration, belonged at the center of the cloud-native stack.
Started as a Deis project on October 15, 2015, Helm brought familiar package-manager concepts to Kubernetes — later merging with Google's Deployment Manager to become the Helm 2 the ecosystem would standardize on.
Founded June 22, 2015 by Docker, CoreOS, and a broad industry coalition, the OCI set out to make container images and runtimes portable across tools and vendors rather than tied to any one implementation.