The /etc/nsswitch.conf file is used to configure which services are to be used to determine information such
as hostnames, password files, and group files. The last two ones, password files, and group
files in our case are not used, since we don't use NIS services on our server. Thus, we will focus on the hosts line in this file.
Edit the nsswitch.conf file vi /etc/nsswitch.conf and change the hosts line to read:
Which means, for programs that want to resolve an address. They should use the dns feature first, and the
/etc/hosts
file if the
DNS servers are not available or can't resolve the address.
Also, we would recommend deleting all instances of NIS services from each line of this file unless you are
using NIS! The result should look like this:
passwd:files
shadow:files
group:files
hosts:dns files
bootparams:files
ethers:files
netmasks:files
networks:files
protocols:files
rpc:files
services:files
automount:files
aliases:files
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