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 IP address information on Linux with the help of the ip command. Learn which subcommands to use to query the relevant details.

How to see the IP address of your internet connection

Show the IP address of your internet connection using the dig or the curl command. Learn which options can be used to find out this information.

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

Linux with systemd might doing DNS resolving using its resolver daemon. Learn how to inspect and clear the DNS cache when using the systemd resolver daemon.

Resolvectl

The command resolvectl provides details about systemd-resolved. Discover the available options for the name resolution daemon on Linux systems.

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 on a Linux systems, including any relevant options.

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.