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The /etc/nsswitch.conf includes database search entries for everything from authentication to name services. As the name server switch file, includes the following entry, which determine what database is searched first.
hosts : files dns
When a system gets a request to search for a host-name such as outsider1.example.com, the preceding directive means the /etc/hosts file is searched first. If that name is not found in /etc/hosts, the next step is to search available configured DNS servers, normally using that configured in the /etc/resolv.conf file.
A few older software components use the /etc/host.conf file for this purpose. The entries in this file are simple, as they support searches of multiple entries in /etc/hosts, along with a search starting with that file, followed by a DNS server configured with the Berkeley Internet Name Domain (BIND) software.
multi on
order hosts,bind
The /etc/nsswitch.conf includes database search entries for everything from authentication to name services. As the name server switch file, includes the following entry, which determine what database is searched first.
hosts : files dns
When a system gets a request to search for a host-name such as outsider1.example.com, the preceding directive means the /etc/hosts file is searched first. If that name is not found in /etc/hosts, the next step is to search available configured DNS servers, normally using that configured in the /etc/resolv.conf file.
A few older software components use the /etc/host.conf file for this purpose. The entries in this file are simple, as they support searches of multiple entries in /etc/hosts, along with a search starting with that file, followed by a DNS server configured with the Berkeley Internet Name Domain (BIND) software.
multi on
order hosts,bind
