Blog - Tag: centos-7

Primary DNS Migration Checklist for CentOS 7 to Oracle Linux 9

Primary DNS Migration Checklist for CentOS 7 to Oracle Linux 9

Sep 29, 2026    Mariusz Antonik    Networking    7 min read

A primary DNS migration from CentOS 7 to Oracle Linux 9 needs more than copying named.conf and zone files. This checklist explains how to validate zones, troubleshoot DNSSEC DS signature errors, plan the shared-IP cutover, and monitor service health after the move. It gives developers and small business owners a practical path for safer DNS changes without another dashboard to watch.

#bind-dns #centos-7 #dns-migration #dnssec #linux server monitoring #oracle-linux-9 #server health
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