How do I rename a LINUX host without needing to reboot for the rename to take effect?Redhat doesn't set my desired hostname on reboothostname -f says “hostname: the specified hostname is invalid”. Guess why?Trouble changing hostname on a Rightscale provisioned CentOS instanceHow do I change HOSTNAME on an Ubuntu server?Setting the hostname: FQDN or short name?Ubuntu 10.04 server change ipEC2 hostname ubuntu and ejabberdchanging the hostname doesn't map the local ip to hostnamehostname doesn't persist after reboot in CentOS 7 instanceChanging hostname on ubuntu-server (VPS) - recommended or not?
Pronouncing Homer as in modern Greek
Proof of Lemma: Every integer can be written as a product of primes
How to deal with or prevent idle in the test team?
Can I create an upright 7-foot × 5-foot wall with the Minor Illusion spell?
Lifted its hind leg on or lifted its hind leg towards?
A workplace installs custom certificates on personal devices, can this be used to decrypt HTTPS traffic?
Why does this part of the Space Shuttle launch pad seem to be floating in air?
Can a Gentile theist be saved?
Proving by induction of n. Is this correct until this point?
I2C signal and power over long range (10meter cable)
Do all polymers contain either carbon or silicon?
Stereotypical names
Does "Dominei" mean something?
Should my PhD thesis be submitted under my legal name?
Can a malicious addon access internet history and such in chrome/firefox?
Was the picture area of a CRT a parallelogram (instead of a true rectangle)?
Why is delta-v is the most useful quantity for planning space travel?
Why are on-board computers allowed to change controls without notifying the pilots?
How to color a zone in Tikz
A known event to a history junkie
Simple image editor tool to draw a simple box/rectangle in an existing image
Why isn't KTEX's runway designation 10/28 instead of 9/27?
Installing PowerShell on 32-bit Kali OS fails
The One-Electron Universe postulate is true - what simple change can I make to change the whole universe?
How do I rename a LINUX host without needing to reboot for the rename to take effect?
Redhat doesn't set my desired hostname on reboothostname -f says “hostname: the specified hostname is invalid”. Guess why?Trouble changing hostname on a Rightscale provisioned CentOS instanceHow do I change HOSTNAME on an Ubuntu server?Setting the hostname: FQDN or short name?Ubuntu 10.04 server change ipEC2 hostname ubuntu and ejabberdchanging the hostname doesn't map the local ip to hostnamehostname doesn't persist after reboot in CentOS 7 instanceChanging hostname on ubuntu-server (VPS) - recommended or not?
I searched for an answer to this question on serverfault and shockingly could not find it. I know it is possible, but I can't remember how to fdo it. How do I change a LINUX host's hostname and get that change to take effect without a reboot?
I am using Ubuntu 16 and Ubuntu 18.
A big feature of Ubuntu is the graphical desktop and graphical system utilities. However, we are running Ubuntu in our production environment so we chose not to use the graphical desktop or utilities in order not to have those features consume resources we need in our production environment.
I know that to rename the host, I edit the files:
/etc/hostname/etc/hosts
In the /etc/hostname one just replaces the current hostname (soon to be former hostname) with the new hostname.
Ubuntu in the /etc/hosts file has the line:
127.0.1.1 your-hostname your-hostname
It acts as bootstrapping while your host is booting up and establishing itself within your network. Prior to changing the hostname, your-hostname is the current (soon to be former hostname) and as a part of changing your host's hostname, one replaces that name with the new name.
What I am familiar with is executing the above two steps and then rebooting your host. But plenty of times, like with a production server, one would like to execute that rename, but not reboot one's host.
How can I change hostname on a host and get that change to take effect without rebooting the host?
linux ubuntu hostname
edited 2 hours ago
Michael Hampton♦
173k27317642
asked 4 hours ago
Peter JirakPeter Jirak
312
New contributor
Peter Jirak is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
add a comment |
I searched for an answer to this question on serverfault and shockingly could not find it. I know it is possible, but I can't remember how to fdo it. How do I change a LINUX host's hostname and get that change to take effect without a reboot?
I am using Ubuntu 16 and Ubuntu 18.
A big feature of Ubuntu is the graphical desktop and graphical system utilities. However, we are running Ubuntu in our production environment so we chose not to use the graphical desktop or utilities in order not to have those features consume resources we need in our production environment.
I know that to rename the host, I edit the files:
/etc/hostname/etc/hosts
In the /etc/hostname one just replaces the current hostname (soon to be former hostname) with the new hostname.
Ubuntu in the /etc/hosts file has the line:
127.0.1.1 your-hostname your-hostname
It acts as bootstrapping while your host is booting up and establishing itself within your network. Prior to changing the hostname, your-hostname is the current (soon to be former hostname) and as a part of changing your host's hostname, one replaces that name with the new name.
What I am familiar with is executing the above two steps and then rebooting your host. But plenty of times, like with a production server, one would like to execute that rename, but not reboot one's host.
How can I change hostname on a host and get that change to take effect without rebooting the host?
linux ubuntu hostname
edited 2 hours ago
Michael Hampton♦
173k27317642
asked 4 hours ago
Peter JirakPeter Jirak
312
New contributor
Peter Jirak is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
I think you meant rebooting when you wrote "bounce". This is a worldwide site; that bit of slang is not understood outside very small niches and it's probably best to avoid it.
– Michael Hampton♦
2 hours ago
add a comment |
I searched for an answer to this question on serverfault and shockingly could not find it. I know it is possible, but I can't remember how to fdo it. How do I change a LINUX host's hostname and get that change to take effect without a reboot?
I am using Ubuntu 16 and Ubuntu 18.
A big feature of Ubuntu is the graphical desktop and graphical system utilities. However, we are running Ubuntu in our production environment so we chose not to use the graphical desktop or utilities in order not to have those features consume resources we need in our production environment.
I know that to rename the host, I edit the files:
/etc/hostname/etc/hosts
In the /etc/hostname one just replaces the current hostname (soon to be former hostname) with the new hostname.
Ubuntu in the /etc/hosts file has the line:
127.0.1.1 your-hostname your-hostname
It acts as bootstrapping while your host is booting up and establishing itself within your network. Prior to changing the hostname, your-hostname is the current (soon to be former hostname) and as a part of changing your host's hostname, one replaces that name with the new name.
What I am familiar with is executing the above two steps and then rebooting your host. But plenty of times, like with a production server, one would like to execute that rename, but not reboot one's host.
How can I change hostname on a host and get that change to take effect without rebooting the host?
linux ubuntu hostname
edited 2 hours ago
Michael Hampton♦
173k27317642
asked 4 hours ago
Peter JirakPeter Jirak
312
New contributor
Peter Jirak is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
I searched for an answer to this question on serverfault and shockingly could not find it. I know it is possible, but I can't remember how to fdo it. How do I change a LINUX host's hostname and get that change to take effect without a reboot?
I am using Ubuntu 16 and Ubuntu 18.
A big feature of Ubuntu is the graphical desktop and graphical system utilities. However, we are running Ubuntu in our production environment so we chose not to use the graphical desktop or utilities in order not to have those features consume resources we need in our production environment.
I know that to rename the host, I edit the files:
/etc/hostname/etc/hosts
In the /etc/hostname one just replaces the current hostname (soon to be former hostname) with the new hostname.
Ubuntu in the /etc/hosts file has the line:
127.0.1.1 your-hostname your-hostname
It acts as bootstrapping while your host is booting up and establishing itself within your network. Prior to changing the hostname, your-hostname is the current (soon to be former hostname) and as a part of changing your host's hostname, one replaces that name with the new name.
What I am familiar with is executing the above two steps and then rebooting your host. But plenty of times, like with a production server, one would like to execute that rename, but not reboot one's host.
How can I change hostname on a host and get that change to take effect without rebooting the host?
linux ubuntu hostname
linux ubuntu hostname
edited 2 hours ago
Michael Hampton♦
173k27317642
asked 4 hours ago
Peter JirakPeter Jirak
312
New contributor
Peter Jirak is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
edited 2 hours ago
Michael Hampton♦
173k27317642
asked 4 hours ago
Peter JirakPeter Jirak
312
New contributor
Peter Jirak is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
edited 2 hours ago
Michael Hampton♦
173k27317642
edited 2 hours ago
Michael Hampton♦
173k27317642
edited 2 hours ago
Michael Hampton♦
173k27317642
173k27317642
asked 4 hours ago
Peter JirakPeter Jirak
312
New contributor
Peter Jirak is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 4 hours ago
Peter JirakPeter Jirak
312
asked 4 hours ago
Peter JirakPeter Jirak
312
312
New contributor
Peter Jirak is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
New contributor
Peter Jirak is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
Peter Jirak is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
I think you meant rebooting when you wrote "bounce". This is a worldwide site; that bit of slang is not understood outside very small niches and it's probably best to avoid it.
– Michael Hampton♦
2 hours ago
add a comment |
I think you meant rebooting when you wrote "bounce". This is a worldwide site; that bit of slang is not understood outside very small niches and it's probably best to avoid it.
– Michael Hampton♦
2 hours ago
I think you meant rebooting when you wrote "bounce". This is a worldwide site; that bit of slang is not understood outside very small niches and it's probably best to avoid it.
– Michael Hampton♦
2 hours ago
I think you meant rebooting when you wrote "bounce". This is a worldwide site; that bit of slang is not understood outside very small niches and it's probably best to avoid it.
– Michael Hampton♦
2 hours ago
add a comment |
1 Answer
1
active
oldest
votes
You can change the kernel's idea of the hostname on a systemd-based system using the hostnamectl tool. For example:
hostnamectl set-hostname whatever
You can view the system's current idea of the hostname with:
hostnamectl # equivalent to hostnamectl status
Keep in mind that this does not change a running process's idea of the hostname. Such a process would have to check the hostname again in order to be updated, and no process does. Thus such a process would need to be restarted. In order for every process to begin using the new hostname, they must be restarted. It's generally easier to just reboot the system than to restart every service individually.
answered 2 hours ago
Michael Hampton♦Michael Hampton
173k27317642
add a comment |
Your Answer
StackExchange.ready(function()
var channelOptions =
tags: "".split(" "),
id: "2"
;
initTagRenderer("".split(" "), "".split(" "), channelOptions);
StackExchange.using("externalEditor", function()
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled)
StackExchange.using("snippets", function()
createEditor();
);
else
createEditor();
);
function createEditor()
StackExchange.prepareEditor(
heartbeatType: 'answer',
autoActivateHeartbeat: false,
convertImagesToLinks: true,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: 10,
bindNavPrevention: true,
postfix: "",
imageUploader:
brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
allowUrls: true
,
onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
);
);
Peter Jirak is a new contributor. Be nice, and check out our Code of Conduct.
Sign up or log in
StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
);
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function ()
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fserverfault.com%2fquestions%2f959952%2fhow-do-i-rename-a-linux-host-without-needing-to-reboot-for-the-rename-to-take-ef%23new-answer', 'question_page');
);
Post as a guest
Required, but never shown
1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
You can change the kernel's idea of the hostname on a systemd-based system using the hostnamectl tool. For example:
hostnamectl set-hostname whatever
You can view the system's current idea of the hostname with:
hostnamectl # equivalent to hostnamectl status
Keep in mind that this does not change a running process's idea of the hostname. Such a process would have to check the hostname again in order to be updated, and no process does. Thus such a process would need to be restarted. In order for every process to begin using the new hostname, they must be restarted. It's generally easier to just reboot the system than to restart every service individually.
answered 2 hours ago
Michael Hampton♦Michael Hampton
173k27317642
add a comment |
You can change the kernel's idea of the hostname on a systemd-based system using the hostnamectl tool. For example:
hostnamectl set-hostname whatever
You can view the system's current idea of the hostname with:
hostnamectl # equivalent to hostnamectl status
Keep in mind that this does not change a running process's idea of the hostname. Such a process would have to check the hostname again in order to be updated, and no process does. Thus such a process would need to be restarted. In order for every process to begin using the new hostname, they must be restarted. It's generally easier to just reboot the system than to restart every service individually.
answered 2 hours ago
Michael Hampton♦Michael Hampton
173k27317642
add a comment |
You can change the kernel's idea of the hostname on a systemd-based system using the hostnamectl tool. For example:
hostnamectl set-hostname whatever
You can view the system's current idea of the hostname with:
hostnamectl # equivalent to hostnamectl status
Keep in mind that this does not change a running process's idea of the hostname. Such a process would have to check the hostname again in order to be updated, and no process does. Thus such a process would need to be restarted. In order for every process to begin using the new hostname, they must be restarted. It's generally easier to just reboot the system than to restart every service individually.
answered 2 hours ago
Michael Hampton♦Michael Hampton
173k27317642
You can change the kernel's idea of the hostname on a systemd-based system using the hostnamectl tool. For example:
hostnamectl set-hostname whatever
You can view the system's current idea of the hostname with:
hostnamectl # equivalent to hostnamectl status
Keep in mind that this does not change a running process's idea of the hostname. Such a process would have to check the hostname again in order to be updated, and no process does. Thus such a process would need to be restarted. In order for every process to begin using the new hostname, they must be restarted. It's generally easier to just reboot the system than to restart every service individually.
answered 2 hours ago
Michael Hampton♦Michael Hampton
173k27317642
answered 2 hours ago
Michael Hampton♦Michael Hampton
173k27317642
answered 2 hours ago
Michael Hampton♦Michael Hampton
173k27317642
answered 2 hours ago
Michael Hampton♦Michael Hampton
173k27317642
173k27317642
add a comment |
add a comment |
Peter Jirak is a new contributor. Be nice, and check out our Code of Conduct.
Peter Jirak is a new contributor. Be nice, and check out our Code of Conduct.
Peter Jirak is a new contributor. Be nice, and check out our Code of Conduct.
Peter Jirak is a new contributor. Be nice, and check out our Code of Conduct.
Thanks for contributing an answer to Server Fault!
- Please be sure to answer the question. Provide details and share your research!
But avoid …
- Asking for help, clarification, or responding to other answers.
- Making statements based on opinion; back them up with references or personal experience.
To learn more, see our tips on writing great answers.
Sign up or log in
StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
);
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function ()
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fserverfault.com%2fquestions%2f959952%2fhow-do-i-rename-a-linux-host-without-needing-to-reboot-for-the-rename-to-take-ef%23new-answer', 'question_page');
);
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
);
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
);
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
);
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
I think you meant rebooting when you wrote "bounce". This is a worldwide site; that bit of slang is not understood outside very small niches and it's probably best to avoid it.
– Michael Hampton♦
2 hours ago