Posts under Kubernetes.
A practical boundary guide: Docker packages and runs containers, Kubernetes orchestrates and keeps services stable at scale, and OpenStack turns datacenter hardware into an IaaS resource pool (VM/network/storage).
A structured workflow for diagnosing Pending pods, CrashLoopBackOff, traffic failures, and node-level issues—without guessing.
Combine Deployment rollingUpdate settings with PodDisruptionBudgets to keep availability during upgrades and node maintenance.
A production-friendly approach to ServiceAccounts, Roles, and bindings that minimizes blast radius without breaking workflows.
Avoid crash loops and bad rollouts by using the right probe for the right job.
A step-by-step approach to introducing NetworkPolicy without breaking everything on day one.
Safely inspect a live Pod without baking debugging tools into production images.
How to make autoscaling predictable: right requests, sane HPA behavior, VPA recommendations, and capacity-aware cluster scaling.
How CPU/memory requests and limits actually affect scheduling, throttling, OOMKills, and autoscaling.
Tell Kubernetes when an app is ready or needs a restart.
Deploy MySQL replication quickly using Helm charts.
Expose a Pod or Service to a local port for quick debugging.
Use replication for read scaling and recovery.
Provide stable DNS for StatefulSets without load balancing.
Provide stable identity and storage for stateful workloads.
Let PVCs trigger storage provisioning automatically.
Ephemeral volumes live with the Pod and fit cache or temp files.
Decouple storage providers and storage consumers.
Decouple configuration and sensitive data from images.
Learn how Pods share and persist data with volumes.
Stateful services need stable identity, storage, and ordered startup.
Run a single-instance MySQL with PVC, Deployment, and Service.
Validate a new version with small traffic before scaling up.
Manage resources with YAML and a reviewable change workflow.
Use Services to turn dynamic Pods into a stable address.
Separate environments, permissions, and quotas with namespaces.
Use Deployments to manage replicas and rolling updates.
Learn how Pods share networking, storage, and lifecycle.
Get a working single-node cluster fast with Minikube.
A lightweight Kubernetes distribution with a one-line install.