12-24-2025, 05:46 AM
I'm a junior sysadmin tasked with cleaning up our company's messy DNS records after discovering several stale entries and inconsistent TTL values that are causing intermittent service issues. I understand the basics, but I'm nervous about making changes that could accidentally take down critical services. For experienced network administrators, what's your systematic process for auditing and documenting DNS zones before making any modifications? How do you handle the migration or update of records for services with low tolerance for downtime, and what tools or scripts do you rely on for validation and change management to prevent human error?