No management after upgrade to 6.x

[desperate250]

Hello,

I'm new here so please forgive me if I missed to give some information.

I have a standalone Proxmox server which I just upgraded from 5.4 to 6.x (latest of today). Upgrade went without issues. After the last reboot, my (autostart) VMs came up and clients can work just as before.

However, I cannot reach the Web interface for management. I cannot even ping the interfaces which are not VM interfaces.
I have two interfaces for management (both via USB NIC, since the 2 built-ins are for VMs) . Both are not reachable, but they are UP and the command "ip address" shows that. I can even ping these IPs from the console (direct attached keyboard and monitor), which is now my only chance of management.

What can be wrong here? Is there a new kind of firewall now, which I missed in the docs?

 

[Stoiko Ivanov]

first guess: check your '/etc/hosts' - you need to make sure that you can resolve the name that's reported when you type `uname -n`

else - please log into the node via ssh and check the journal for more hints to what went wrong (`journalctl -u pveproxy` (for the webfacing proxy) or `journalctl -b` for the whole log since booting))

 

[desperate250]

Before upgrading to version 6, I was able to manage Proxmox using all IP addresses I have configured on several interfaces. After migration, it did accept none.
You were right with the /etc/hosts. It was set to an old USB LAN interface IP which did not exist anymore. I reinserted this USB interface, rebootet and now I can access management on this interface only. Why is ist impossible to ping or access management on other interfaces like this one, which worked on 5.4:

11: vmbr3: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
link/ether 00:e0:4c:84:02:6a brd ff:ff:ff:ff:ff:ff
inet 192.168.1.13/24 brd 192.168.1.255 scope global vmbr3
valid_lft forever preferred_lft forever
inet6 fe80::2e0:4cff:fe84:26a/64 scope link
valid_lft forever preferred_lft forever

 

[Stoiko Ivanov]

* pveproxy usually listens to all interfaces configured
* do you have a firewall enabled? (in that case the default is to only let the local-network (which again depends on the entry in '/etc/hosts' connect to the GUI)
* change the '/etc/hosts' entry to reflect your current management ip

Hope this helps!