Demystifying Hostnames and Domain Names in Linux, and How Server Naming Benefits You

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Were you every confused regarding the differences and use-cases between a hostname and domain name for a device within your network? How does naming your servers benefit you? In this latest episode of the Linux Crash Course series, we'll explore some foundational concepts around both.
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Time Codes
00:00 - Intro
01:15 - Set up your own Linux instance with Linode (Sponsor)
02:40 - Why it's important to set the hostname for your Linux server
04:31 - How you go about finding the hostname for your Linux installation
05:24 - What exactly is a "hostname" anyway?
06:18 - What is a "domain name" and how does it differ from a "host name"?
09:59 - Example hostname and domain application within an organization
10:29 - Example "A Record" in DNS
12:01 - Expanding further on the differences between hostnames and domain names
15:03 - How does a domain controller fit in? Is it required?
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Опубликовано:

29 июн 2024

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Комментарии : 29

@DeadStar12018 Год назад

This has answered so many questions I've had about domains! Please make more videos on this!

@maxdiamond55 Год назад

Thanks Jay. That was the perfect balance and agree to going into no more detail than was strictly necessary without going off topic.

@kodikodi9948 Год назад

i have struggled with this for a long long time!! thank you for doing this video.

@ethanrivers4057 Год назад

I'm guessing an IT guy connected wrongly to the shinra server is probably what took down the midgar plate.

@AndersJackson Год назад

MS Domain controller AD is based on three software/protocols which Kerberos, LDAP and CIF (which is SMB and implemented in Samba in Linux). And they also usually have a DNS server, but that can also be another software in Linux. (Use Kerberos for single sign on and verify machines AND users, LDAP for search databases for machine names and user names etc and CIF for send scripts to machine to set up software).

@michalroesler Год назад

That's awesome video Jay. You are the coolest Linux teacher in the Universe. Respect from Poland.

@costa404 Год назад

Sometimes after a reboot, the old hostname persists. I had to change the file /etc/cloud/cloud.cfg. There is a setting preserve_hostname: false. I had to change this to true and the new hostname survives a reboot.

@Handelsbilanzdefizit Год назад

Please make a video about Two-Factor Disk-Encryption, with Yubikey, FIDO2 or something like that.

@TheCocoaDaddy Год назад

Great video! I have two questions about domain controllers: 1) What is an example of a domain controller other than Active Directory by Microsoft? 2) What use does a domain controller have for managing systems not running Windows? Thanks for posting!

@toromac9786 Год назад

Think you would be looking at OpenLDAP or similar. Would love to see a video going over this (if there isn't one already)

@VirendraBG 11 месяцев назад

As always, awesome explanation. Love from INDIA. 🙏🏻

@realsergeybrin Год назад

so how do i set a domain name? how han i check what domain name do i have? what if 2 networks/companies have the same domain name?

@johnparr61 Год назад

If you are working on a server in a terminal how do you know what the full domain name of that server is? Can it be displayed in the bash prompt as an alternative to the host name?

@waipalisrevenge3707 Год назад

Hello there, is your playlist on how to configure Ubuntu server from the get go you uploaded few years ago not available anymore?

@user-bb6qv5vi7l Год назад

I install AD, because it is the best admin tool. After installation, I have the capabilities of a network device manager.

@Theborg72 Год назад

hi, really interesting but got a thought in case you do not have a domain controller. how do you then set it up so it finds the right server with domain requests

@ghostingalong Год назад

Can you explain assigning a fqdn without a domain controller?

@llpolluxll Год назад

After becoming a fan of Steven Universe (simultaneously the most exciting and disappointing series I've ever watched) I started naming servers after types of gems. Mythological pantheons is also a scheme I've used.

@jsross33 Год назад

If there is more than one person in the room named Jay. We could also use a C name, Hey Learn Linux TV guy.

@edwardchapman1914 23 дня назад

What is the smartest/safest way to mount a server files on different class c. Situation I have spun up a linode server, but not reachable for an employee in the country he is in.. but he can spin up a cloud instance in the country he is in, and from within this server he can shell into my linode instance. He is looking to permanently mount one of my directories.. I am think even secure nfs is not that secure.

@franciscolopez2736 Год назад

🔥

@Zerafiall Год назад

I'm a hint disappointed in this video just cause I feel like I have more questions now. Is the domain name for a computer set by the computer itself? Or by some network setting?

@noweare1 Год назад

You actually have to purchase a domain name. I agree this was not his best presentation but he does have the best videos overall. Basically I think of domain name as a human readable substitute for an ip address.

@majstorgile Год назад

👏👏👏

@catbeautifule 2 месяца назад

Please I need help, how to associate hostname to IP address

@canadianwildlifeservice8883 Год назад

I can't post a link as an example or else my comment gets deleted, but why didn't he explain the concept of subdomains when discussing a FQDN? He mentions hostnames, and domain names, but not subdomains. Subdomains are the beginning part of a domain name, which is necessary for dynamic DNS, which is basically a domain name with a subdomain name in front.

@peanutspicks 8 месяцев назад

Nice but too many ads

@alisajakaksikettua 8 месяцев назад

They are data objects or source if you don't care about author's right on data which is illegally obtained. I don't care about authors in this context.