Can't connect to server. Error message: Not Found

[runevn]

Thanks for the reply. And thanks for the tip about XOA.

I might think that this has something to do with the self-signed certificates of the XCP-ng server. Because when I try to access it from the XCP Center the server is shortly connected and I can see all my VM but then I have to accept an invalid certificate, which I do and then it disconnects.

After this, whenever I try to reconnect to my XCP-ng server I get the same error but this time from XCP-ng Center.

I have made a completely clean reinstall of XCP-ng but I still get the same error message.

Any ideas on how I can debug this issue?

[peder]

Can you ping the server reliably? Because it kind of seems like it's a network problem.

Start a CMD prompt on your XCP-ng Center PC and run ping -n 30 192.168.66.17 to see if you get packet losses.
If you do then it's probably a bad NIC or cable or switch port.

[runevn]

peder - yes no packet losses when running ping -n 30 192.168.66.17.

[jedimarcus]

Are you sure you are pinging the right machine? No change you have a duplicate IP address?

[runevn]

jedimarcus - yes I think so. I'm pining the management interface, which is the right interface to ping right?

I really don't think that I have another machie running on that IP. 192.168.66.17 is out of the DHCP servers scope. And when I enter the IP in the browser I'm shown the welcome to XCP-ng screen where I have the option to install XOA or download the XCP-ng Center app.

[Biggen]

runevn

Isn't there a password field you must type in when connecting XO to a new host? Are you supplying it with a password?

Its been a long time since I setup a new host so perhaps I'm wrong.

[runevn]

Biggen Yes, I have checked that box/slider. But no luck.

[runevn]

I tried to ssh into the XCP-ng server, which worked fine I ran some commands but then the connection got closed (Broken pipe) with the argument that the remote host identification has changed.

[21:24 vmhost ~]# xe packet_write_wait: Connection to 192.168.66.17 port 22: Broken pipe
Macbook:~ run$ ssh root@192.168.66.17
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
@    WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED!     @
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
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 ECDSA key sent by the remote host is
SHA256:qiZb5QLDgFhJUbNvvC5ry2SFao7td0/JywdeH1mIm1c.
Please contact your system administrator.
Add correct host key in /Users/run/.ssh/known_hosts to get rid of this message.
Offending ECDSA key in /Users/run/.ssh/known_hosts:10
ECDSA host key for 192.168.66.17 has changed and you have requested strict checking.
Host key verification failed.

This fingerprint key is different from what I can see when I go under "Status Display" on the XCP-ng server.

I don't know if this helps but it seems that I have some issues with authentication both on the XCP-ng Center, XO and when I SSH into the host?

Any idea of what I could do? And please let me know if you need more information.

Thanks

[olivierlambert]

This usually means you have another machine on this IP.

[runevn]

Wow - you guys where right. I had a Raspberry pi running with that address on my network. Sorry for the inconvenience and thanks for your help.

[olivierlambert]

No worries, if we knew the answer it means we made the mistake ourselves in the past.

Isn't that the goal of a great Open Source community? Sharing knowledge and code