Insights
Technical Notes Archive
Short, practical and experience-based notes for better infrastructure decisions.
Monitoring Alert Quality
Good monitoring produces alerts that are actionable, traceable and worth attention.
Read NoteNetBox as Source of Truth
NetBox is valuable when IPAM, racks, devices and links remain up to date.
Read NoteSensitive Change Window
Datacenter, firewall and critical-service changes should be executed with a rollback plan.
Read NoteCertificate Lifecycle
SSL certificates need clear expiry dates, domains, installation paths and renewal plans.
Read NoteNetwork Documentation Before Change
Before a major change, the current network state, IPs, racks, services and access paths must be recorded.
Read NoteVLAN Segmentation
Users, CCTV, VoIP, servers and management networks should not stay in one shared range without policy.
Read NoteBackup Without Restore Test Is Not Enough
A backup is reliable only when restore testing, recovery time and ownership are clear.
Read Note