Network running at 100Mbps not 1Gbps and issues with running updates

S

Shriek0517

New Member
Feb 20, 2024
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Hi, I'm very new to using proxmox and this is all a bit of a learning curve for me so apologies in advance if anything i say makes no sense or should be obvious,

The initial issue I had was looking at settings on my router, I noticed it was saying the port my server was plugged in to had an error and was only running at 100Mbps not the full 1Gbps like everything else plugged in. I tested all the cables and they seem fine and in the end i plugged the cable from my server into my gaming pc and suddenly got 1Gbps so the issue is either the connection on my motherboard or proxmox itself. I've checked the motherboard manual and it says it should support the full 1Gbps so started going down the route of making sure everything was up to date which led to the next problem.

Whenever I try to run updates on proxmox it ends with a load of errors I'll copy and paste below but when I've looked into it, the issue seems to be that I need to update my DNS settings on proxmox but on the posts I've found I need to update /etc/resolv.conf but any time I try I get access denied issues which then leads me down a rabbit hole of not being able to instal anything new and that makes me think i need to run updates first, but I can't run updates right now. So in the end, i've got a bit stuck and any help would be appreciated.

Ign:1 http://ftp.uk.debian.org/debian bookworm InRelease
Ign:2 http://security.debian.org bookworm-security InRelease
Ign:3 https://enterprise.proxmox.com/debian/ceph-quincy bookworm InRelease
Ign:4 http://ftp.uk.debian.org/debian bookworm-updates InRelease
Ign:5 http://download.proxmox.com/debian bookworm InRelease
Ign:1 http://ftp.uk.debian.org/debian bookworm InRelease
Ign:5 http://download.proxmox.com/debian bookworm InRelease
Ign:2 http://security.debian.org bookworm-security InRelease
Ign:4 http://ftp.uk.debian.org/debian bookworm-updates InRelease
Ign:3 https://enterprise.proxmox.com/debian/ceph-quincy bookworm InRelease
Ign:1 http://ftp.uk.debian.org/debian bookworm InRelease
Ign:5 http://download.proxmox.com/debian bookworm InRelease
Ign:3 https://enterprise.proxmox.com/debian/ceph-quincy bookworm InRelease
Ign:2 http://security.debian.org bookworm-security InRelease
Ign:4 http://ftp.uk.debian.org/debian bookworm-updates InRelease
Err:1 http://ftp.uk.debian.org/debian bookworm InRelease
Temporary failure resolving 'ftp.uk.debian.org'
Err:2 http://security.debian.org bookworm-security InRelease
Temporary failure resolving 'security.debian.org'
Err:5 http://download.proxmox.com/debian bookworm InRelease
Temporary failure resolving 'download.proxmox.com'
Err:4 http://ftp.uk.debian.org/debian bookworm-updates InRelease
Temporary failure resolving 'ftp.uk.debian.org'
Err:3 https://enterprise.proxmox.com/debian/ceph-quincy bookworm InRelease
Temporary failure resolving 'enterprise.proxmox.com'
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
All packages are up to date.
W: Failed to fetch http://ftp.uk.debian.org/debian/dists/bookworm/InRelease Temporary failure resolving 'ftp.uk.debian.org'
W: Failed to fetch http://ftp.uk.debian.org/debian/dists/bookworm-updates/InRelease Temporary failure resolving 'ftp.uk.debian.org'
W: Failed to fetch http://security.debian.org/dists/bookworm-security/InRelease Temporary failure resolving 'security.debian.org'
W: Failed to fetch http://download.proxmox.com/debian/dists/bookworm/InRelease Temporary failure resolving 'download.proxmox.com'
W: Failed to fetch https://enterprise.proxmox.com/debian/ceph-quincy/dists/bookworm/InRelease Temporary failure resolving 'enterprise.proxmox.com'
W: Some index files failed to download. They have been ignored, or old ones used instead.
 
Hi, this seems a network isues, please ssh to the server via root user and check /etc/resolv.conf contents if it's empty add those lines.

nameserver 8.8.8.8
nameserver 8.8.4.4
 
Last edited:
Just asking, do you have Broadcom network cards within the problematic subnet?

And just a bit of Linux knowledge, editing /etc/resolv.conf is an ancient leftover predates many, many glorious civilizations that are nothing but dust now so stop doing that, seriously.

The right way of changing nameserver is adding a nameservers line in your /etc/network/interfaces, then apply changes with
systemctl restart systemd-networkd


Note different Linux distributions may have different way of applying changes. Refer to respective docs for more detail.
 
Last edited:
Alesha said:
Hi, this seems a network isues, please ssh to the server via root user and check /etc/resolv.conf contents if it's empty add those lines.

nameserver 8.8.8.8
nameserver 8.8.4.4
Click to expand...
thanks for the help, so itt not empty but is probably the issue from looking as it just has

search proxmox.local
nameserver 127.0.0.1

should I be alright to overwrite this?
 
zzz09700 said:
Just asking, do you have Broadcom network cards within the problematic subnet?

And just a bit of Linux knowledge, editing /etc/resolv.conf is an ancient leftover predates many, many glorious civilizations that are nothing but dust now so stop doing that, seriously.

The right way of changing nameserver is adding a nameservers line in your /etc/network/interfaces, then apply changes with
systemctl restart systemd-networkd


Note different Linux distributions may have different way of applying changes. Refer to respective docs for more detail.
Click to expand...
for the Broadcom Network Card, not 100% certain but Im pretty sure i dont.

Would adding the nameservers line to /etc/network/interfaces be the same one as the other commenter has said or something else?
 
Shriek0517 said:
thanks for the help, so itt not empty but is probably the issue from looking as it just has

search proxmox.local
nameserver 127.0.0.1

should I be alright to overwrite this?
Click to expand...

you can overwrite the nameserver 127.0.0.1 or change it from web ui as my image.

1713904966343.png
 
alexskysilk said:
identify the pci address for your nic(s) like so:

dmesg | grep eth

note the pci addresses (should be something like 0000:1a:00.0)

next, lspci -vv | grep -A5 [pci address]

post the output here.
Click to expand...
Because of the length of it I saved it in a file and attached, cheers
 

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