An administrator can manage DNS server addresses for all network interfaces on the Configuration server. This automates DNS configuration during the network setup process, reducing the need for manual adjustments to the DNS resolving configuration file. This also ensures that DNS settings are preserved after network restarts or server reboots. Additionally, admins can restore previous DNS settings from a network configuration backup if necessary.
To configure DNS server addresses:
- Go to the Servers tab.
- Select a server and click Change server configuration near the server name.
- Go to the Network tab.
- Select the network interface and click the Global DNS
option.
- Fill in the details in the Global DNS dialog:
- Preferred DNS Server – type in the primary DNS server address used to resolve domain names.
- Alternate DNS Server – type in the first optional alternate DNS server address. It will be used if the primary server cannot resolve a domain name.
- Alternate DNS Server 2 – type in the second optional alternate DNS server address. It will be used if neither the primary nor the first alternate server can resolve a domain name.
- Search domains – type in one or more domain names that the system should automatically add to hostnames that don’t include a domain part. For example, if you specify company.local as a search domain, and try to reach server1, the system will automatically resolve it as server1.company.local. Enter any required domains, separated by spaces.
- Options – type in additional DNS resolver parameters to adjust the way your server searches for and retrieves IP addresses from DNS servers, such as how long it waits for a reply or how many retries it makes. For example, timeout:5 means that the system should wait up to 5 seconds for a response from a DNS server before retrying or moving to the next one.
- Click Save.
- Go to the Configurations tab.
- Clone the active configuration. Then, click Check/Apply to apply the configuration.
