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DevOps & observability · #kubernetes
Docker Hub's rate limits break CI/CD pipelines when scaling clusters. Harbor's proxy cache creates a transparent caching layer storing images locally, serving subsequent pulls from your network instead of Docker Hub. This reduces latency and eliminates rate limit concerns.
Learn how Talos Linux replaces SSH with a gRPC API, and how to use talosctl apply-config to declaratively set node settings. The guide shows a working YAML example, explains the API flow, and highlights common pitfalls and limits.
Use an Argo CD PreSync hook to run an idempotent database migration Job before your application manifests are applied, so new code never starts against an old schema.
Learn how a PodDisruptionBudget keeps a minimum number of your application’s pods running while you drain or upgrade nodes, and see the trade‑offs of setting it too tightly.
k3OS made the OS declarative and upgrades atomic — ideas worth keeping. But the project is archived, so here's how to reuse the design with maintained tooling.
Learn how to lock down Talos node settings with immutable configuration, from generating a signed config blob to verifying drift and recovering unresponsive nodes. Follow this step‑by‑step workflow to keep your cluster secure and auditable.
Declare DNS, monitoring, or logging once per seed as a Gardener Addon and let the controller keep them in sync across all shoots, reducing manual toil and drift.
Learn how k3OS uses an immutable, read‑only filesystem and YAML‑based configuration to eliminate configuration drift in k3s clusters.
Enable KubePrism on Talos Linux so in-cluster workloads reach the Kubernetes API through a node-local load-balanced endpoint, and verify it survives a control plane node outage.
docker
talos
argocd
k3s
gardener