Snippets
Quick-reference guides, gotchas, and battle-tested solutions from real-world Kubernetes, cloud, and DevOps operations.
Kubernetes Useful Commands Cheat Sheet
Battle-tested kubectl commands for daily cluster operations — pod cleanup, version checks, network debugging, bulk patching, and more.
Zalando Postgres Operator: Backup & Restore on Azure
Complete guide to setting up WAL-G backups with Azure Blob Storage for the Zalando Postgres Operator, including restore procedures and troubleshooting.
Access Kubernetes Nodes Without SSH
Get a root shell on K8s nodes when SSH is blocked — kubectl debug, nsenter, and systemctl access.
ArgoCD GitOps Essentials: Quick Reference
Core ArgoCD concepts, architecture components, and key features at a glance.
HashiCorp Vault AppRole for External Secrets Operator
Set up a Vault AppRole with non-expiring secret IDs for the External Secrets Operator on Kubernetes.
Prometheus: Copy-Paste PromQL Queries for Kubernetes
Ready-to-use PromQL for pod restarts, ArgoCD health, node memory, and CPU load alerts.
Kafka Topic Manual Leader Rebalance via ZooKeeper
How to fix Kafka topics with incorrect or missing leaders by manually rewriting partition state in ZooKeeper.
ArgoCD ignoreDifferences Patterns
Copy-paste ignoreDifferences configs for common false OutOfSync issues in ArgoCD.
Kubernetes Resource Limits: No CPU Limits, Memory Limit = Request
The correct way to set Kubernetes resource requests and limits — from the K8s maintainers at Google.
Resize PVCs Dynamically in Kubernetes
Expand PersistentVolumeClaim storage on the fly without downtime — check, patch, verify.
MSSQL Client in Kubernetes: Quick sqlcmd Reference
Spin up a temporary sqlcmd pod to connect, query, and debug Azure SQL or any MSSQL database from inside your cluster.