ssh key

Hello, When running PVE 9, it generates an rsa key, and automatically add it to the authorized_keys. Is there a way to prevent it from generating **RSA** keys, and use ed25519 keys ? 1. I don't see any reason to generate a key, and add it to the authorized_keys while not running a cluster 2...

Hi, Just built a new Cluster and have 4 guests on it. each host has the same network. Lan(VlanA) as well as storage(Vlanx) But when I try to migrate a guest i get the following error 2025-10-30 17:02:54 # /usr/bin/ssh -e none -o 'BatchMode=yes' -o 'HostKeyAlias=pve02' -o...

HI All, I have been going at this for days, used Google AI and ChatGPT with multiple conversation to try and figure this issue out. Problem: I have created a VM template so that I can create new VM's easily with cloud-init config. I followed this video exactly as my last ditch effort...

I got tired of running into this issue on every PVE version. I spent some time deep diving to get this to reproduce consistently. Related threads: 2025 - Enable RSA key seems to fix 2023 - SSH Host key ceritificates 2022 - Remote host identification has changed Test Setup: PVE 9.0 / 3 node...

I have a 3 node cluster set up for testing: pve01 and pve02 running 8.1.3 and pve03 added later running 8.2.2 Trying to migrate a VM to or from pve03 fails with the following error: 2024-09-10 13:02:35 # /usr/bin/ssh -e none -o 'BatchMode=yes' -o 'HostKeyAlias=pve03' root@A.B.C.D /bin/true...

Howdy. I've been a proxmox user for about 5 years now, but I've never post here. Time to start with a learning moment! While diagnosing an issue, I discovered a classic PEBCAK problem that I'd like to share just for anyone who may be encountering the same problem. To make a long story short...

We have been using Proxmox and Ceph for quite a while now; unfortunately, when we attempted to setup a new cluster a few days ago, the Ceph install failed. We are doing all of this as the root user. The error occurs when Ceph attempts to add the ssh keys to localhost error: PermissionError...

Hi, today I looked through /root/.ssh/authorized_keys and there were 3 keys: 1) ssh-rsa from root@pve 2) ssh-rsa from my desktop (from where I usually manage proxmox) 3) ssh-ed25519 from u0_a129@localhost Now, I recognize the 2nd key, but what about the 1st and 3rd keys? I read somewhere that...

Outline: I'm wondering if there's any detailed documentation anywhere about exactly how the various SSH key files are used within a Proxmox cluster? In particular, what is the relationship between /root/.ssh/known_hosts, /etc/ssh/ssh_known_hosts, and /etc/pve/priv/known_hosts, and if replacing...

I didn't found this feature in proxmox. This makes access to VM's more scalable. Is there any solution?

I run a platform called Parrot CTFs which requires a pretty weird and advanced network configuration. This also means I can have a lot of weird issues that sometimes do not make sense. I have a node in my Proxmox Cluster that keeps giving me this error: ( I blurred out the IP Addresses and...

Given that OpenSSH is dropping RSA from its default lineup of KeX algorithms, I proceeded to do the same for Proxmox here. Unfortunately, the removal of the RSA-related `ssh_host_rsa_key`/`ssh_host_rsa_key.pub` file resulted in some sporadic web-based popup "Error" message: ``` can't open...

Hello, how can i add a node to a cluster where all nodes are configured with ssh: PermitRootLogin without-password Thanks!

Hello i got 4 nodes on my cluster 10.10.30.21, 23,24,28 I just do some daily checking on my main node 28 and when i open shell 21 the error was shows up @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ @ WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED! @...

Hello! I just installed a proxmox v6. When I wanted to add my ssh key in authorized_keys file, I see that there is already one ssh key in it. Does the installation create one by default? If yes, what is the usage of it? Thx!