Solved

using just hostname or FQDN in hostnamectl set-hostname.... what are the ramifications of each?

Posted on 2016-07-17
2
160 Views
Last Modified: 2016-08-03
using just hostname or FQDN in hostnamectl set-hostname.... what are the ramifications of each?
0
Comment
Question by:Xetroximyn
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
2 Comments
 
LVL 80

Accepted Solution

by:
David Johnson, CD, MVP earned 250 total points
ID: 41716114
Redhat recommends using the FQDN and that you only use hostnames that are assigned to you
https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/7/html/Networking_Guide/ch-Configure_Host_Names.html
0
 
LVL 62

Assisted Solution

by:gheist
gheist earned 250 total points
ID: 41724190
I never heard of NM and systemd hostname changers.
In RHEL7 hostname is stored in /etc/hostname by installer and other programs dont replace it, and you can use posix hostname utility to change it on running system (all processes need to be restarted to catch up)
NM is not recommended on servers (not by redhat, just that sometimes NM boot without interfaces up)
You can use short or long hostname, but always put full and short version in /etc/hosts. If you fail to do so most programs using DNS will request hostname (short or long) and same appended with all possible 'search' domains in a row, taken from resolv.conf. (so another advice is to take search domains out from resolv.conf if not used)
0

Featured Post

Ransomware: The New Cyber Threat & How to Stop It

This infographic explains ransomware, type of malware that blocks access to your files or your systems and holds them hostage until a ransom is paid. It also examines the different types of ransomware and explains what you can do to thwart this sinister online threat.  

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

I've written instructions for one router type, but this principle may be useful for others of the same brand and even other brands of router. Problem: I had an issue especially with mobile devices that refused to use DNS information supplied via…
1. Introduction As many people are interested in Linux but not as many are interested or knowledgeable (enough) to install Linux on their system, here is a safe way to try out Linux on your existing (Windows) system. The idea is that you insta…
Learn several ways to interact with files and get file information from the bash shell. ls lists the contents of a directory: Using the -a flag displays hidden files: Using the -l flag formats the output in a long list: The file command gives us mor…
Learn how to get help with Linux/Unix bash shell commands. Use help to read help documents for built in bash shell commands.: Use man to interface with the online reference manuals for shell commands.: Use man to search man pages for unknown command…

733 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question