Kubernetes from zero to hero: clusters, Pods and manifests
What Kubernetes is and the desired-state idea, the parts of a cluster, a local cluster with kind, a first Pod, and how manifests describe objects in YAML.
Tag: Containers
8 entries
Kubernetes: Deployments, Services and getting traffic in
Run hello-app as a Deployment that keeps three copies alive, give it a stable address with a Service, compare Service types, and route outside traffic with Gateway API or Ingress.
Kubernetes: storage, namespaces, debugging and Helm
Persistent volumes and StatefulSets, namespaces and kubectl contexts, a debugging routine with the common Pod statuses, Kustomize and Helm, and a production checklist.
Kubernetes: rolling updates, config, probes and autoscaling
Update hello-app without downtime and roll back, pass settings with ConfigMaps and Secrets, add readiness and liveness probes, set requests and limits, and scale with an HPA.
Docker from zero to hero: images, containers and your first run
What Docker is, images, containers and registries, how containers differ from VMs, installing it, running and managing your first container, and image tags.
Docker from zero to hero: Compose, debugging and cleanup
Running the app and its database from one compose.yaml with health checks, the Compose commands, a debugging toolbox, freeing disk space, and habits for production images.
Docker from zero to hero: a Dockerfile for your own app
Containerizing a small Node app: writing a Dockerfile and .dockerignore, building and running it, layers and the build cache, multi-stage builds, and CMD versus ENTRYPOINT.
Docker from zero to hero: ports, volumes and networks
Connecting containers to the world: publishing ports safely, volumes, bind mounts and tmpfs, user-defined networks for containers that talk by name, and passing configuration and secrets.