Host key verification failed.

[thusband]

I created a Ubuntu Server VM but when I try to SSH into it from my Linux Mint laptop I get:

IT IS POSSIBLE THAT SOMEONE IS DOING SOMETHING NASTY!
Someone could be eavesdropping on you right now (man-in-the-middle attack)!
It is also possible that a host key has just been changed.
The fingerprint for the ED25519 key sent by the remote host is
SHA256:81NVLc+XzyU50xxxxxxxxxxxxxxxxxxxEyFaObnzJgEPk.
Please contact your system administrator.
Add correct host key in /home/tom/.ssh/known_hosts to get rid of this message.
Offending ECDSA key in /home/tom/.ssh/known_hosts:31
remove with:
ssh-keygen -f "/home/tom/.ssh/known_hosts" -R "192.168.68.61"
Host key for 192.168.68.61 has changed and you have requested strict checking.
Host key verification failed.

I've been setting up some containers and removing them and I think that IP address was one of them. I'm pretty new with Proxmox and am not sure if the suggestions are meant to be done in the Proxmox console or not. I removed part of that SHA256 number for this post.

 

[bbgeek17]

There is no question in your post. I take it you are concerned?

Don't be. This is "normal". You previously used this IP for another host/node and accepted the key. When you rebuilt the node a new key was generated. Just follow the instructions on the screen.


Blockbridge : Ultra low latency all-NVME shared storage for Proxmox - https://www.blockbridge.com/proxmox

 

[gfngfn256]

I created a Ubuntu Server VM but when I try to SSH into it from my Linux Mint laptop I get:

So assuming the output is from the laptop to the Ubuntu Server VM itself, then this has nothing todo with PVE.
Any suggestions must be run within laptop / VM

 

[thusband]

Well I feel dumb. That was very easy to take care of.

Many thanks!