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Troubleshooting

How to Troubleshoot Hybrid Entra Join and Windows LAPS

September 25, 2026 by Dušan Stančić
Windows workstation between on-premises directory services, cloud identity, and a secure password vault during Hybrid Entra Join and LAPS troubleshooting

A command-driven workflow for diagnosing a Pending Hybrid Entra Join device when Windows LAPS unexpectedly rotates the local administrator password.

Categories Troubleshooting

k3s Disk Usage: 9 Steps to Find and Clean Unused Images

September 21, 2026 by Dušan Stančić
Isometric k3s worker disk audit showing container images, safe cleanup and protected persistent storage

A real k3s disk audit that found stale container images, recovered about 28 GB across three workers, and tuned kubelet garbage collection safely.

Categories Kubernetes, Troubleshooting

How to Migrate a Stateful App from a VM to k3s: A Cutover Checklist

September 18, 2026 by Dušan Stančić
Stateful application moving from a VM to k3s through separate database and file validation, TLS testing, DNS cutover and rollback path

A practical, evidence-based VM-to-k3s migration checklist from a real Snipe-IT cutover: independent backups, data verification, NFS writes, TLS testing, DNS change and rollback.

Categories Kubernetes, Infrastructure, Troubleshooting

Audit k3s etcd Backups: 10 Checks Before You Trust Them

September 21, 2026September 14, 2026 by Dušan Stančić
Audit k3s etcd backups by checking snapshot age, schedule, retention, server token, off-host copy, and isolated restore test

A non-destructive k3s backup audit covering datastore type, snapshot inventory, schedule, retention, QNAP copies, server-token protection, file integrity and an isolated restore test.

Categories Kubernetes, Backup & DR, Troubleshooting

Scale Azure PostgreSQL: 8 Safe Steps from B2s to B1ms

September 11, 2026 by Dušan Stančić
Scale Azure PostgreSQL safely from an oversized B2s compute tier to a right-sized B1ms tier

A cautious, repeatable procedure for right-sizing Azure Database for PostgreSQL Flexible Server from B2s to B1ms while planning the restart, validating connections and keeping rollback ready.

Categories Troubleshooting, Cloud & DevOps

QNAP NFS Permissions: 9 Reliable Checks for Non-Root Kubernetes Containers

September 10, 2026 by Dušan Stančić
QNAP NFS permissions troubleshooting for a non-root Kubernetes container using a dedicated service identity

A real troubleshooting sequence for QNAP-backed Kubernetes storage when root can write to an NFS PVC but the non-root application user receives Permission denied.

Categories Kubernetes, Infrastructure, Troubleshooting

curl –resolve: 7 Safe Checks Before a DNS Cutover

September 10, 2026 by Dušan Stančić
curl --resolve test path bypassing DNS to reach a new Kubernetes Ingress before cutover

Use curl –resolve to test Kubernetes Ingress routing, TLS, redirects and application assets against a new IP before changing public DNS.

Categories Kubernetes, Troubleshooting
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