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How to configure DNS to maintain host information

You can maintain host information centrally using DNS. With DNS, you do not have to update the /etc/hosts file every time you add a new host to the network.

If you have several storage systems on your network, maintaining host information centrally saves you from updating the /etc/hosts file on each storage system every time you add or delete a host.

If you configure DNS later, you must take the following actions:

If you want to use primarily DNS for host-name resolution, you should specify it ahead of other methods in the hosts section of the /etc/nsswitch.conf file.

Correct host-name resolution depends on correctly configuring the DNS server. If you experience problems with host-name resolution or data availability, check the DNS server in addition to local networking.