Questions tagged [fqdn]
Fully Qualified Domain Name (FQDN)
140
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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 ...
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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 ...
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votes
2
answers
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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 ...
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votes
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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 ...
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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 ...
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4
answers
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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 ...
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2
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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 ...
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8
votes
1
answer
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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 ...
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3
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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 ...
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2
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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 ...
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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 ...
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6
votes
3
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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 ...
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3
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What's FQDN of a WORKGROUP pc?
What do I enter when asked for FQDN (fully qualified domain name), for a PC that's not in a domain but in a WORKGROUP instead?
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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 ...
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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 ...
user345934
4
votes
2
answers
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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 ...
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3
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Solaris equivalent of hostname -f?
What is the Solaris equivalent of the Linux hostname -f command? On Solaris, when I type hostname, I receive the short name but I need to get the FQDN.
Typing hostname -f sets the short name to be "-...
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1
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Debian squeeze: change to hostname makes other packages unhappy?
I'm working with a fresh Debian Squeeze install from Linode, and it looks like hostname behaves differently (from lenny) in a way that makes certain other packages unhappy. Viz:
clements@debian:/tmp/...
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1
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Postfix Send only Without a FQDN
I'm using OSSEC and Nagios to build a sort of HID system on our network. Everything is going smoothly so far; however I cannot get OSSEC to send email alerts.
What I'm trying to do right now is get ...
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1
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What would cause the hostname FQDN to repeat the suffix twice?
I have three new CentOS 6 servers that connect to a DHCP server to get an IP and to have DNS/rDNS setup to bind their FQDN and IP.
Two of them are behaving as expected.
One of them is appending the ...
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net use fails with system error 67 with FQDN
I search for help with a confusing error with Windows 7 mounting a
network fileshare.
The problem is that on machine A a mount with the FQDN fails (net use
system error 67) while the same command ...
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votes
1
answer
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Should my MX record point to my FQDN?
I finally got postfix up and running for the first time, and want to make sure all things are correct before I 'test' it out, so I can assume unworldly powers stopped it from working and not me.
...
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Why do I need an FQDN for a Hypervisor used only for running in house VMs for software testing?
I'm testing ProxMox, and during installation it asks for an FQDN.
I've entered test.local, and it accepted it but I suppose I would have to enter something like cluster1.companyname.com, and then ...
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1
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Name Mismatch - Incorrect Remote Computer Name
Our team recently decided to reconfigure an old Windows Server 2012 group of servers/network to set it up for production use. We recently renamed the old domain for all the servers, reattached each ...
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How can I find the domain (fqdn) for my machine if hostname doesn't return domain info and domainname returns empty?
As per the this question's title, hostname doesn't return domain info and domainname returns empty. I want to find out the full machine and domain for the machine I'm using (Mac OS X 10.5.8). How can ...
3
votes
2
answers
11k
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Assigning a hostname of the fqdn assigned to a dhcp client with dnsmasq?
I'm aware that you can assign static DNS entry names by doing the following in dnsmasq.conf:
address=/wiki.leerdomain.lan/192.168.1.200
ptr-record=wiki.leerdomain.lan/192.168.1.200
and then ...
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3
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Not able to login through FQDN or IP address
I have kind of a weird situation here.
I have a server running W2k8 R2 with SP1 where I am able to login with hostname\administrator but neither with IPAddress\Administrator nor with FQDN\...
3
votes
1
answer
303
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Does not having FQDN in /etc/hosts cause any problems?
Just been looking through some servers and seen that the external ip is set up with the full and short names the wrong way round, e.g.:
a.b.c.d myserver myserver.mycompany.org
What sort of problems ...
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Hosted Exchange keeps "resolving" the CAS server FQDN when setting up Outlook...NOT GOOD
In our exchange 2010 environment when setting up Outlook with one of the mailbox accounts, check name resolves the FQDN of our Client Access Server. We do not want employees/customers to see this ...
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Our website is not resolving from our LAN because of LAN DNS configuration
We have a LAN/WAN network with a Windows domain name (ourcompanyweb.org) that matches our website url (http://ourcompanyweb.org) which is hosted externally. When I ping our website (of the same name) ...
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How to set the fqdn on a CentOS server? [duplicate]
I set my hostname in the /etc/sysconfig/network file to host.example.com
HOSTNAME=host.example.com
Fyi, I then issued a reboot on the machine.
I have a problem with Puppet: when I run Facter on this ...
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0
answers
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Linux: What is the right way to configure the HOSTNAME directive in /etc/sysconfig/network? [duplicate]
There's a (quiet) argument between me and my boss in regard to the right way to configure HOSTNAME directive in /etc/sysconfig/network file:
As far as I know, in the HOSTNAME directive you should ...
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Can a SSL certificate be used on a locally hosted website?
I tried to install Let's Encrypt on my local server.
But I could not because it threw errors that I need a fully qualified domain name (FQDN). I use server.arch.local as my hostname. Does it not ...
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Setting FQDN hostname and dot
I was wondering if I am editing a file such as /etc/hosts or /etc/sysconfig/network should I put a . at the end of the name. such as test.example.com.
Is there a difference? Would anything break ...
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Is a subdomain essentially a host?
I'm trying to understand the difference between a subdomain and a domain in a LAN versus a WAN (Internet). (Or am I just fooling myself. Is it the same?)
If I google it I just get that a subdomain is ...
2
votes
2
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Confused about Linux Hostname, DNS Hostnames and FQDN Hostname
This might sound stupid and basic to some of you, but I am still so confused about this even after reading numerous sources on the net. My questions still unclear are:
Is the Hostname in machine (for ...
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2
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What should I use for the FQDN of a server hosting only a subdomain?
I am setting up a server to host an application which will be on a subdomain, let's say "application.foo.com". "foo.com" is hosted on a completely different server, points to a different IP, etc.
Do ...
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Domain Controller computer name does not use FQDN
I've been experiencing some network issues on a domain controller. Ended up having to reinstall the TCP/IP stack which ended up fixing most of the issues. However, I'm having replication and GPO ...
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Can a Second-level domain be considered as a Fully-qualified domain?
I often see people talking about FQDNs (fully-qualified domains) to describe subdomains (e.g., networkengineering.stackexchange.com) that are under a second-level domain (e.g., stackexchange.com). I ...
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Cannot Set Up Naked Domain on Azure CDN
What I am using:
Azure CDN: Premium Verizon
DNS: DnsMadeEasy
I am struggling to setup all endpoints of my domain on Azure CDN; I am able to set up endpoints with a prefix to my domain (i.e prefix....
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Can you use a second level domain-name as a FQDN? (e.g. hostname.com)
I've been doing it for a while and it seems to work ok, but I thought I'd check what good practice is as far as FQDN. Right now my server is setup with (lets pretend) the hostname myhostname and I ...
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Editing hosts file - will removing default settings cause trouble?
I'm running a CentOS 5.4 machine and had trouble getting sendmail to work. After a bunch of researching, I found out that I needed to change my servers FQDN. /etc/hosts had the following:
127.0.0....
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How do I properly configure a FQDN for sendmail to work with PHP mail()?
I'm sure variations on this question have been asked and I apologize if this is a duplicate, but I just can't seem to find something that works in my situation without breaking something else.
I'm ...
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1
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4k
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Why use FQDN as DNS-server option in DHCP?
I've seen multiple default configurations of DHCP-servers with a FQDN set as the DNS-server option. Doesn't this imply a catch-22, or the need for that DNS-server to be in the hosts file of every ...
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Reload puppet on change of network configuration
We are using puppet version 2.7.11 on a debian client with autostart enabled (START=yes in /etc/default/puppet). We connect to the puppetmaster using a certificate with the FQDN (dummyclient.work-...
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ISA 2006 does not allow traffic using FQDN
I experience an issue accessing Tomcat running over SSL with MS ISA 2006 in front.
When I access using the internal IP address (e.g. https://10.0.42.136/...) everything works fine and ...
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1
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174
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What problems could I encounter by not using FQDN's in my closed network?
I'm setting up a closed network (i.e. no connections outside it) and I have been thinking of setting up servers and services without FQDN's because it would much more convenient to connect to a ...
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550 Invalid HELO/EHLO must contain a FQDN or IPv6
I've got a Windows Server 2008 box where I host a number of websites (on different domains) that send email as part of their functionality.
I've been checking up on the SMTP events and found a number ...
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1
answer
590
views
New Domain DC Adds FQDN (including forest) to DNS - Cant Resolve
I added a new domain recently to our AD. It was added using the option to add a new domain to an existing forest.
So now we have the original domain.local which is in the forest also called domain....
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1
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In /etc/hosts is there something special about the first hostname for any given line?
I know that the first one is said to be canonical, but I don't fully understand the practical implications. This question was triggered by the man page for hostname -f, specifically when it says:
...
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