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Questions tagged [fqdn]

Fully Qualified Domain Name (FQDN)

Fully Qualified Domain Name (FQDN) is a domain name that specifies its exact location in the tree hierarchy of the Domain Name System (DNS). It specifies all domain levels, including the top-level domain and the root zone. A fully qualified domain name is distinguished by its unambiguity; it can only be interpreted one way.

Source: wikipedia

142 questions
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Hostnames - What are they all about?

I've recently been "forced" to perform some sysadmin work, while this isn't something that I absolutely love doing I've been reading, experimenting and learning a lot. There is one fundamental aspect of server configuration that I've not been able…
Alix Axel
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Equivalent of Linux command `hostname --fqdn` in Windows XP?

Is there a way to find the fully qualified domain name of a Windows XP box? Being unfamiliar with Windows I would describe what I'm looking for as the equivalent of the command hostname --fqdn available in Linux.
Grundlefleck
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Why should I use an FQDN instead of the server's IP address?

In my work with servers I have come across in configuration files where you should enter the address to an external server. I have seen some use the server's IP address directly, but I have heard many recommendations to use a hostname fully…
Emil Rowland
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Sort a list of domain names (FQDNs) starting from tld and working left

I am looking to sort a list of domain names (a web filter whitelist) starting from the TLD and working upwards. I am looking any *nix or windows tools that can do this easily, though a script would be fine too. So if the is the list you are…
Zoredache
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Bash prompt on Ubuntu - FQDN (\H) same as hostname (\h)

We've got seperate environments at my workplace for development, testing, integration, and staging. Within those envs, we've overloaded the hostnames in DNS - e.g. in the dev environment, the primary web machine is called web1.dev.example.com, and…
Ben Williams
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Which FQDN hostname to use for SSL certificate signing request- when using a CNAME record?

We have a subdomain (https://portal.company.com) that is the alias for a different hostname (defined in a CNAME record). This dynamic DNS hostname (https://portal.dlinkddns.com) resolves to the public (dynamic) IP address of our office. At the…
Austin ''Danger'' Powers
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4 answers

Keytool SubjectAlternativeName

I'm trying to get the certificates just right for our Jira/Confluence deployments in house. People access them differently, either from the hostname or the FQDN. I'm using Java 7's keytool so I have access to the server alternate name…
Tawm
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Linux Hosting: What is the purpose of setting hostname/FQDN in hosts file?

I just bought a Linode VPS hosting plan and was following this guide to set up. In the "Setting the Hostname" section and "Update /etc/hosts " section, it says the FQDN/hostname to be set here does not need to be related with the websites I am about…
shenkwen
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Definition of Fully qualified domain name

I tried to search to Internet for a definition of a FQDN. Wikipedia says, a FQDN specifies its exact location in the tree hierarchy of the Domain Name System (DNS) I would interpret this, that it's unambiguously resolvable (in DNS). The example at…
sebix
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Validity of a FQDN with a hostname consisting entirely of numbers

Is a FQDN valid if the hostname component is entirely numeric? It's not something I've come across before and I'm not sure if something like the following is legal: 001.example.com. I know it's an issue for Windows Servers, but is a purely numeric…
Matthew Bradley
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Why do I need to set a hostname?

I know there's quite a few questions about host names. But even after reading them, I didn't really understand the concept of host names entirely. So here's my question: I've been following this guide in setting up a VPS with Linode. The first step…
gerky
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3 answers

Postfix sends to FQDN Hostname instead of Domain Name

I have installed a send only postfix. Postfix works when I send a mail to a full email address. However, if a mail to sent to a user, it adds the FQDN name as the extension instead of just the domain name I have set-up during installation. For…
Neel
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5 seconds for hostname -f and a strange DNS request

My question addresses a strange behaviour of hostname -f on my Gentoo Linux System. The symptom: rt01 ~ # time hostname -f rt01.domain.net real 0m5.007s user 0m0.001s sys 0m0.000s With strace i can see that the following steps are…
user345934
5
votes
2 answers

Rename a GlusterFS Peer

I have a 2 peer GlusterFS system. It was initially created using simple hostnames file01 and file02. These hosts were added to /etc/hosts to make it work. Now we want to start using FQDN because we want to attach other servers to the volumes using…
user2962402
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Best practices for FQDN for standalone domain (is a two part domain.tld okay?)

I've searched quite a bit and can't seem to find a straight, modern answer on this. If I am hosting a domain, say, mydomain.com, on a machine which is going to solely be used for that domain, and there are no subdomains, is there a real, practical…
birchbark
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