Dns

Systemd-analyze

The command systemd-analyze helps analyzing systemd components to optimize the system including performance and security.

How to see the the network IP address of your system

Show the IP address of your system with the help of the ip command.

How to see the IP address of your internet connection

Show the IP address of your internet connection using the dig command.

How to see which DNS server is used

Find the active DNS server being used by reviewing the network configuration, including common commands to query this information.

Show to clear the DNS cache with systemd

Learn how to inspect and clear the DNS cache when using the systemd resolver daemon.

Resolvectl

The command resolvectl provides details about systemd-resolved, the name resolution daemon.

How to see the TTL value of a DNS record

Learn how to query the Time To Live (TTL) for a DNS record by using the dig tool.

Linux DNS Tuning for Performance and Resilience

Linux DNS configuration is usually done during the installation of the system. With proper configuration and tuning, you gain performance and stability.