Comics: Parsing of/etc/resolv.conf files and puppet tools in Linux

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Linux directory structure

resolv.conf file

NameServer

The only required keyword. Indicates the IP address of the DNS server, which can have many rows of nameserver, each with an I-P address. At query time, the order of nameserver in this file is performed, and the following nameserver is queried only if the first nameserver is unresponsive. generally do not specify more than 3 servers

Domain

Declares the domain name of the host. Many programs use it, such as a mail system, and are used when DNS queries are made for hosts that do not have a domain name. If there is no domain name, the host name is enabled, with the deletion of all at the first point (.) The previous content.

Search

Several of its parameters indicate the order in which the domain names are queried. When you want to query a host that does not have a domain name, the host is found separately in the domain that is declared by search. Domain and search cannot coexist, and if they exist at the same time, subsequent occurrences will be used.

Sortlist

Allows for a specific sort of domain results to be obtained. Its parameters are network/mask pairs that allow arbitrary order of arrangement. The default/etc/resolv.conf file is not available in Red Hat, and its content is created dynamically based on the options given at the time of installation.

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Comics: Parsing of/etc/resolv.conf files and puppet tools in Linux