Kubernetes Tip: Requests & Limits (Without Surprises)
How CPU/memory requests and limits actually affect scheduling, throttling, OOMKills, and autoscaling.
Kubernetes
Posts under Kubernetes.
Kubernetes Tip: Safer Rollouts with PDB + Surge/Unavailable
Combine Deployment rollingUpdate settings with PodDisruptionBudgets to keep availability during upgrades and node maintenance.
Kubernetes Tip: A Production Troubleshooting Playbook
A structured workflow for diagnosing Pending pods, CrashLoopBackOff, traffic failures, and node-level issues—without guessing.
Kubernetes Tip: RBAC Least Privilege (Practical, Not Painful)
A production-friendly approach to ServiceAccounts, Roles, and bindings that minimizes blast radius without breaking workflows.
Kubernetes Tip: Readiness vs Liveness vs Startup Probes
Avoid crash loops and bad rollouts by using the right probe for the right job.
Kubernetes Tip: NetworkPolicy as a Practical Default-Deny
A step-by-step approach to introducing NetworkPolicy without breaking everything on day one.
Kubernetes Tip: Debug Pods with Ephemeral Containers
Safely inspect a live Pod without baking debugging tools into production images.
Kubernetes Tip: Autoscaling Without Thrash (HPA + VPA + Cluster Autoscaler)
How to make autoscaling predictable: right requests, sane HPA behavior, VPA recommendations, and capacity-aware cluster scaling.
Probes
Tell Kubernetes when an app is ready or needs a restart.
Install a MySQL Cluster with Helm
Deploy MySQL replication quickly using Helm charts.
Port-Forward
Expose a Pod or Service to a local port for quick debugging.
MySQL Replication
Use replication for read scaling and recovery.
Headless Services
Provide stable DNS for StatefulSets without load balancing.
StatefulSet Basics
Provide stable identity and storage for stateful workloads.
StorageClass
Let PVCs trigger storage provisioning automatically.
Ephemeral Volumes
Ephemeral volumes live with the Pod and fit cache or temp files.
Persistent Volumes and PVCs
Decouple storage providers and storage consumers.
Volume Basics
Learn how Pods share and persist data with volumes.
ConfigMaps and Secrets
Decouple configuration and sensitive data from images.
Create a MySQL Database
Run a single-instance MySQL with PVC, Deployment, and Service.
Running Stateful Apps
Stateful services need stable identity, storage, and ordered startup.
Declarative Object Configs
Manage resources with YAML and a reviewable change workflow.
Canary Releases
Validate a new version with small traffic before scaling up.
Namespace: Logical Isolation
Separate environments, permissions, and quotas with namespaces.
Service: Stable Access
Use Services to turn dynamic Pods into a stable address.
Pods: The Smallest Scheduling Unit
Learn how Pods share networking, storage, and lifecycle.
Deployments and ReplicaSets
Use Deployments to manage replicas and rolling updates.
Build a Cluster Quickly with K3s
A lightweight Kubernetes distribution with a one-line install.
Install Minikube and Start a Local Cluster
Get a working single-node cluster fast with Minikube.
Kubernetes Introduction
Understand the problems Kubernetes solves from a product view.
Kubernetes Architecture
Separate control-plane decisions from node execution.
Kubernetes QuickStart: Course Guide
Goals, environment setup, and a practical pace for the series.
Kubernetes Basics
Link core objects, controllers, and workflows with the fewest concepts.