this post was submitted on 29 Jan 2024
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Linux

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Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).

Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word "Linux" in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.

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my old hostname is still active???? (lemmy.kde.social)
submitted 9 months ago* (last edited 9 months ago) by tubbadu@lemmy.kde.social to c/linux@lemmy.ml
12 comments fedilink hide all child comments
 

I have no idea what's going on. my server once run fedora, and its hostname was fedoraserver. I recently installed AlmaLinux, and now its hostname is tserver. today I was looking at the logs of jellyfin and... Slow HTTP Response from http://fedoraserver:8096
...
...
...
* realization *
...
WTF!!!!! It's like I saw a ghost. do any of you know what's going on?

even more strange:

$ host fedoraserver                                                                                                                                                                                    
fedoraserver.station has address 192.168.1.4
fedoraserver.station has address 192.168.1.13
fedoraserver.station has address 192.168.1.41
fedoraserver.station has address 192.168.1.10
$ host tserver                                                                                                                                                                                         
tserver.station has address 192.168.1.13
$ host 192.168.1.13                                                                                                                                                                                    
13.1.168.192.in-addr.arpa domain name pointer fedoraserver.station.

I'm... I'm scared

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[–] db2@lemmy.world 38 points 9 months ago (2 children)

Caching.

[–] tubbadu@lemmy.kde.social 12 points 9 months ago (2 children)

Can I clear that cache? It scares me

[–] possiblylinux127@lemmy.zip 11 points 9 months ago

Try rebooting your router

[–] db2@lemmy.world 6 points 9 months ago

Probably. What does your dns and/or dhcp?

[–] isVeryLoud@lemmy.ca 5 points 9 months ago (1 children)

Sooo basically a ghost :P

[–] db2@lemmy.world 4 points 9 months ago

In the machine, yes.

[–] possiblylinux127@lemmy.zip 31 points 9 months ago

Its your router. (your router doesn't know you changed hostnames. All it sees is your Mac)

[–] knobbysideup@sh.itjust.works 12 points 9 months ago

Dns caching

[–] Frederic@beehaw.org 11 points 9 months ago (1 children)

Reboot your router/DHCP server

[–] lemmyvore@feddit.nl 3 points 9 months ago

And you may want to use shorter DHCP leases in the future.

[–] nixx@lemmy.ca 9 points 9 months ago

DHCP?

Your old host registered an fqdn and did mnt remove it, then the new host registered the same ip to a different fqdn.

It happens

I have no idea what you are using for dhcp/dns but start by looking there

[–] hellvolution@lemmygrad.ml 3 points 9 months ago

That's why you should set a (12h-24h tops) lease time on your DHCP...