this post was submitted on 29 Jan 2024
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my old hostname is still active???? (lemmy.kde.social)
submitted 7 months ago* (last edited 7 months ago) by tubbadu@lemmy.kde.social to c/linux@lemmy.ml
11 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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[–] possiblylinux127@lemmy.zip 17 points 7 months ago

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

[–] db2@lemmy.world 12 points 7 months ago (2 children)

Caching.

[–] isVeryLoud@lemmy.ca 5 points 7 months ago (1 children)

Sooo basically a ghost :P

[–] db2@lemmy.world 4 points 7 months ago

In the machine, yes.

[–] tubbadu@lemmy.kde.social 5 points 7 months ago (2 children)

Can I clear that cache? It scares me

[–] possiblylinux127@lemmy.zip 6 points 7 months ago

Try rebooting your router

[–] db2@lemmy.world 3 points 7 months ago

Probably. What does your dns and/or dhcp?

[–] Frederic@beehaw.org 5 points 7 months ago (1 children)

Reboot your router/DHCP server

[–] lemmyvore@feddit.nl 1 points 7 months ago

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

[–] nixx@lemmy.ca 5 points 7 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

[–] knobbysideup@sh.itjust.works 4 points 7 months ago

Dns caching