If you have DNSSEC enabled and configured on your primary DNS server, it's a good practice to also configure DNSSEC on your secondary DNS server. DNSSEC helps to ensure the authenticity and integrity of DNS data, and having it enabled on both servers is a security best practice.
To configure DNSSEC on your secondary DNS server, you'll need to perform the following steps:
Install DNSSEC Tools (if not already installed): Ensure that DNSSEC tools are installed on your secondary DNS server. The specific package names might vary depending on your Linux distribution, but commonly used tools are part of the "dnssec-tools" package. You can typically install it using your package manager. For example, on Ubuntu:
sudo apt-get install dnssec-tools
Generate DNSSEC Keys (if not already generated): You'll need to generate DNSSEC keys for each signed zone. Use the "dnssec-keygen" command to generate the keys. For example: