#hostname — Public Fediverse posts

Need to isolate a hostname from the host? `unshare --uts` creates a new UTS namespace with independent hostname and domain fields. Use `sethostname()` syscall inside to set it without affecting the parent. Lightweight kernel-level isolation since Linux 2.6.19. #linux #uts-namespace #hostname-isolation

https://www.valtersit.com/vault/uts-namespace-to-isolate-hostname-and-domain-3b95c2/

Need to isolate a hostname from the host? `unshare --uts` creates a new UTS namespace with independent hostname and domain fields. Use `sethostname()` syscall inside to set it without affecting the parent. Lightweight kernel-level isolation since Linux 2.6.19. #linux #uts-namespace #hostname-isolation

https://www.valtersit.com/vault/uts-namespace-to-isolate-hostname-and-domain-3b95c2/

Learn the differences between static, transient, and temporary hostnames in Linux. Understand when to use each type and how to manage them.

Step-by-Step Guide: https://ostechnix.com/linux-hostname-types-explained-static-vs-transient-vs-temporary/

#Hostname #LinuxNetworking #Linuxcommands #Linuxhowto #Linuxadmin #Linuxbasics #Linux

Learn the differences between static, transient, and temporary hostnames in Linux. Understand when to use each type and how to manage them.

Step-by-Step Guide: https://ostechnix.com/linux-hostname-types-explained-static-vs-transient-vs-temporary/

#Hostname #LinuxNetworking #Linuxcommands #Linuxhowto #Linuxadmin #Linuxbasics #Linux

/I'm/ not doing an exhaustive deep dive into moss species names/nicknames, /you're/ doing an exhaustive deep dive into moss species names/nicknames!!! 😝

#Naming #NamingOfThings #NamingThingsIsHard #HardestProblemInComputerScience #Hostname #Hostnames #ComputerNames #E_TOOMANYHASHTAGS

/I'm/ not doing an exhaustive deep dive into moss species names/nicknames, /you're/ doing an exhaustive deep dive into moss species names/nicknames!!! 😝

#Naming #NamingOfThings #NamingThingsIsHard #HardestProblemInComputerScience #Hostname #Hostnames #ComputerNames #E_TOOMANYHASHTAGS

🚀 Oh wow, another tech blogger convinced they're the first to discover DNS servers 🌐. Prepare to be amazed as a 'radical optimist' embarks on a riveting 16-minute odyssey to... translate hostnames! 🙄 Spoiler: it's still DNS.
https://jan.wildeboer.net/2025/08/My-DNS-Part-1/ #techblogger #DNSservers #hostname #discovery #internetculture #HackerNews #ngated

🚀 Oh wow, another tech blogger convinced they're the first to discover DNS servers 🌐. Prepare to be amazed as a 'radical optimist' embarks on a riveting 16-minute odyssey to... translate hostnames! 🙄 Spoiler: it's still DNS.
https://jan.wildeboer.net/2025/08/My-DNS-Part-1/ #techblogger #DNSservers #hostname #discovery #internetculture #HackerNews #ngated

What are you devices (laptops, phones, servers, etc.) named after? My theme is greek mythology: gods, heros and monsters.
My PiHole is named after argus, the all-seeing giant. My laptop that I often took on journeys is named odysseus. The home server is named herakles, because of all the different tasks it fulfils.

I also heard of someone using place names of famous disasters like Chernobyl, Hindenburg or Deepwater Horizion.

What‘s your theme?

Boosts appreciated.

#names #naming #hostname #computer #server #laptop #desktop

What are you devices (laptops, phones, servers, etc.) named after? My theme is greek mythology: gods, heros and monsters.
My PiHole is named after argus, the all-seeing giant. My laptop that I often took on journeys is named odysseus. The home server is named herakles, because of all the different tasks it fulfils.

I also heard of someone using place names of famous disasters like Chernobyl, Hindenburg or Deepwater Horizion.

What‘s your theme?

Boosts appreciated.

#names #naming #hostname #computer #server #laptop #desktop

https://blog.gslin.org/archives/2025/06/05/12436/lets-encrypt-%e9%87%9d%e5%b0%8d%e7%84%a1%e4%b8%bb%e7%94%a8%e6%88%b6%e7%ab%af%e7%9a%84%e9%99%90%e5%88%b6/

Let's Encrypt 針對無主用戶端的限制

#account #acme #certificate #client #domain #hostname #letsencrypt #limit #name #rate #security #zombie

https://blog.gslin.org/archives/2025/06/05/12436/lets-encrypt-%e9%87%9d%e5%b0%8d%e7%84%a1%e4%b8%bb%e7%94%a8%e6%88%b6%e7%ab%af%e7%9a%84%e9%99%90%e5%88%b6/

Let's Encrypt 針對無主用戶端的限制

#account #acme #certificate #client #domain #hostname #letsencrypt #limit #name #rate #security #zombie

So if you want to properly change your Mac’s hostname without macOS mollycoddling you and changing it back, use:

sudo scutil --set HostName <hostname>

(Not hostname --set <hostname>).

*smh*

#macOS #hostname #change #dev

So if you want to properly change your Mac’s hostname without macOS mollycoddling you and changing it back, use:

sudo scutil --set HostName <hostname>

(Not hostname --set <hostname>).

*smh*

#macOS #hostname #change #dev

How To Change Hostname (Computer Name) On Ubuntu Linux Terminal https://youtu.be/5WvaqDSJBOU #Websplaining #ChangeHostname #ComputerName #Hostname #ChangeComputerName #ChangeUbuntuComputerName #Ubuntu #UbuntuLinux #UbuntuLinuxTerminal #ChangeUbuntuServerHostname #ChangeUbuntuHostname

I had a presentation about registering #hostname on #ipv6, when #SLAAC is used. Is there any attempt to register name to local #dns server, when I am on IPv6 only network? I think dynamic update over TCP would be similar to #dhcp based registration Dnsmasq does automatically. Is there any system attempting it already?

I had a presentation about registering #hostname on #ipv6, when #SLAAC is used. Is there any attempt to register name to local #dns server, when I am on IPv6 only network? I think dynamic update over TCP would be similar to #dhcp based registration Dnsmasq does automatically. Is there any system attempting it already?

I will have today presentation about #hostname used on public networks. When is it great and when it is not. #OpenAlt. I used free slot, need to work on slides. #DNS and #mDNS will be included.

I will have today presentation about #hostname used on public networks. When is it great and when it is not. #OpenAlt. I used free slot, need to work on slides. #DNS and #mDNS will be included.

@chunked The unexpected #hostname change seems to be linked to the "private Wi-Fi" option (spoofing the MAC address, for privacy) which the #Sequoia upgrade enabled (maybe it's new in this version). Mine was showing as Macmini on the network – and even in Terminal – while System Settings still showed the name I'd previously set. Turning off "Private Wi-Fi address" changed it back.

@chunked The unexpected #hostname change seems to be linked to the "private Wi-Fi" option (spoofing the MAC address, for privacy) which the #Sequoia upgrade enabled (maybe it's new in this version). Mine was showing as Macmini on the network – and even in Terminal – while System Settings still showed the name I'd previously set. Turning off "Private Wi-Fi address" changed it back.

@kde a less experienced Linux user has just pointed out to me that there is no GUI in KDE for setting a system hostname? Or if there is we can't find it.

I've always just used hostnamectl, which is fine. But seems like an oversight!

#kde #plasma #hostname #hostnamectl #sysadmin #linux #areweblind

@kde a less experienced Linux user has just pointed out to me that there is no GUI in KDE for setting a system hostname? Or if there is we can't find it.

I've always just used hostnamectl, which is fine. But seems like an oversight!

#kde #plasma #hostname #hostnamectl #sysadmin #linux #areweblind

cloning a bog standard qemu vm to several machines is high on the list - lots less work just making a new standard vm and than just cloning it and changing a few small things #hostname #snapshot consolidation

cloning a bog standard qemu vm to several machines is high on the list - lots less work just making a new standard vm and than just cloning it and changing a few small things #hostname #snapshot consolidation

DNS Basics: Hans-Georg Eßer shows you the basics of how DNS handles IP address resolution in this quick tutorial https://www.fosslife.org/dns-basics-hostname-resolution #DNS #Linux #network #IPAddress #SystemAdministration #hostname

DNS Basics: Hans-Georg Eßer shows you the basics of how DNS handles IP address resolution in this quick tutorial https://www.fosslife.org/dns-basics-hostname-resolution #DNS #Linux #network #IPAddress #SystemAdministration #hostname

I definitely need to start a process of not committing to a #hostname until I've typed it a dozen times at different levels of tiredness, etc. Named a system 'igneous' and by damn it's a PITA to type more than 50% of the time for me. Stupid Rocky Linux.

I definitely need to start a process of not committing to a #hostname until I've typed it a dozen times at different levels of tiredness, etc. Named a system 'igneous' and by damn it's a PITA to type more than 50% of the time for me. Stupid Rocky Linux.

@Stark9837 @Auli @chuck

Do you know how to use the same local #hostname when connecting from my local network AND from my #wireguard #VPN?

I.e. pihole.local should point to
192.168.1.2 from local network

but point to
100.200.200.2 when I'm connected to my VPN

By the way both IPs are the same server just different interfaces.

@Stark9837 @Auli @chuck

Do you know how to use the same local #hostname when connecting from my local network AND from my #wireguard #VPN?

I.e. pihole.local should point to
192.168.1.2 from local network

but point to
100.200.200.2 when I'm connected to my VPN

By the way both IPs are the same server just different interfaces.

@vinc17

Try this on for size. It's what the command actually does, what's actually common with all other operating systems (even HP-UX), and what it deprecates is what the Tobias hostname(1) manual has been deprecating since around the turn of the century.

http://jdebp.info/Proposals/Debian-hostname.xml

Many guides even for Debian actually stick to the conventional use. This one has "linux.example.com" as the hostname from "hostname" and "hostname -s" shortening it.

https://hostingdata.co.uk/linux-hostname-command-tutorial-examples/

#DebianBugs #hostname

@vinc17

This is, ironically, why the old confusing hostname(1) manual has all of these backpedallings about not using "hostname -fqdn". It's a misfeature that no other implementation has, invented peculiarly for Debian and the peculiar Debian notion that we still live in 1981.

The Debian command was done badly in the middle-1990s, and the hostname(1) manual has been trying to un-dig the hole ever since, the hostname(7) manual having the real 40-year convention.

#DebianBugs #hostname

@vinc17

Since the 1980s, everyone else has been happy to have and document multi-label names as the norm.

RedHat's doco, for example, has almost equally long said to use a multiple-label name as the hostname. Just like the actual Unix operating systems all did before it.

RHEL 9 says "new-hostname.example.com" for example.

https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/9/html/configuring_and_managing_networking/assembly_changing-a-hostname_configuring-and-managing-networking

#DebianBugs #hostname

@vinc17

On the contrary, multiple-label hostnames work with most softwares, even UUCP being able to have multiple-label names in bang paths, because it's been the convention since at least 1983.

Debian has had this wrong for a long time.

Debian's focus on putting a short hostname in and letting the HOSTS file expand it using name qualification and canonicalization mechanisms is straight out of the pre-DNS times.

#DebianBugs #hostname

@marlowe @cks

Interesting factoid:

The HP-UX manual is about the only one to describe a convention of the UUCP node name (available via uname(1) and uname(2)) as a distinctly configurable thing separate from the Unix hostname. (It's almost universally the same thing under the covers in modern Unices and Linux distributions nowadays.)

The HP-UX hostname(1) has a table with the UUCP nodename as "sys" and the Unix hostname as "sys.x.y.z...".

#hostname

Y efectivamente #shodan nos confirma la ubicación y otro #hostname.
⬇️

Anyone who does not have the #hostname in the prompt of the shell has never rebooted the wrong server.