<div>
David,<br />
<br />
Thanks for your reply, and yes I see that the Network Interface setup on most servers has DNS nameservers, ect. &nbsp;I was thinking about why this would be the case, but now understand this would be the way to go. &nbsp;<br />
<br />
Best Regards,<br />
Peter Martin
</div>


David,

Thanks for your reply, and yes I see that the Network Interface setup on most servers has DNS nameservers, ect.  I was thinking about why this would be the case, but now understand this would be the way to go.  

Best Regards,
Peter Martin

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<div class="content wysiwyg-content">
This is what I want to do, I have a script to check and add the new search DNS domain in /etc/resolv.conf, however I am trying to develop the script to do all of the below:<br />
<br />
Check hostname, if using FQDN change to correct DNS name<br />
check /etc/resolv.conf and remove old DNS search and nameservers, then put new nameservers in file.<br />
check /etc/hosts, and remove old DNS domain name and put in new DNS domain name to server name.<br />
check /etc/sysconfig/network, put full server name with new DNS appended to server short name.<br />
check /etc/sysconfig/network-scr<wbr />ipts/ifcfg<wbr />-eth#, remove old DNS statements and put new in file.<br />
service network restart <br />
<br />
Thanks,<br />
Peter
</div>
</div>


This is what I want to do, I have a script to check and add the new search DNS domain in /etc/resolv.conf, however I am trying to develop the script to do all of the below:

Check hostname, if using FQDN change to correct DNS name
check /etc/resolv.conf and remove old DNS search and nameservers, then put new nameservers in file.
check /etc/hosts, and remove old DNS domain name and put in new DNS domain name to server name.
check /etc/sysconfig/network, put full server name with new DNS appended to server short name.
check /etc/sysconfig/network-scripts/ifcfg-eth#, remove old DNS statements and put new in file.
service network restart 

Thanks,
Peter

Script to Change DNS on Linux servers to include new FQDN in all files

Linux is a UNIX-like open source operating system with hundreds of distinct distributions, including: Fedora, openSUSE, Ubuntu, Debian, Slackware, Gentoo, CentOS, and Arch Linux. Linux is generally associated with web and database servers, but has become popular in many niche industries and applications.

Linux

The Domain Name System (DNS) is a hierarchical, globally distributed system responsible for associating the name of a computer, service or other resource into an IP address for connecting to the Internet or a private network. Most prominently, it translates domain names to the numerical IP addresses needed for the purpose of computer services and devices worldwide.

Networking is the process of connecting computing devices, peripherals and terminals together through a system that uses wiring, cabling or radio waves that enable their users to communicate, share information and interact over distances. Often associated are issues regarding operating systems, hardware and equipment, cloud and virtual networking, protocols, architecture, storage and management.