[PVE-User] PVE Cluster: New authentication is required to access each node from GUI

Gianni Milo gianni.milo22 at gmail.com
Sat Jan 25 18:32:29 CET 2020

Things I would check or modify...

- output of 'pvecm s' and 'pvecm n' commands.
- syslog on each node for any clues.
- ntp.
- separate cluster (corosync) network from storage network (i.e In your
case, use --link2, LAN).


On Sat, 25 Jan 2020 at 15:44, Frank Thommen <f.thommen at dkfz-heidelberg.de>

> Dear all,
> I have installed a 3-node PVE cluster as instructed on
> https://pve.proxmox.com/pve-docs/chapter-pvecm.html (usung commandline).
>   When I now connect via GUI to one node and select one of the other
> nodes, I get a "401" error message and then I am asked to authenticate
> to the other node.  So to see all nodes from all other nodes via GUI I
> would have to authenticate nine times.  I don't think that is as it
> should be ;-). I would assume that once I am logged in on the GUI of one
> of the cluster nodes, I can look at the other two nodes w/o additional
> authentication from this GUI.
> The situation is somehow similar to the one described on
> https://forum.proxmox.com/threads/3-node-cluster-permission-denied-invalid-pve-ticket-401.56038/,
> but the suggested "pvecm updatecerts" (run on each node) only helped for
> a short time.  After a reboot of the nodes I am back to the potential
> nine authentications.
> My three nodes are connected through a full 10GE mesh
> (https://pve.proxmox.com/wiki/Full_Mesh_Network_for_Ceph_Server) using
> broadcast bonds.  This mesh will finally also be used for Ceph.  I
> configured this mesh to be the cluster network (--link0).  As fallback
> (--link1) I used the regular LAN.
> Does anyone have an idea what could be wrong and how this could be
> fixed?  Could the mesh with the broadcast bonds be the problem?  If yes,
> should I use an other type of mesh?  Unfortunately a full dedicated
> PVE-only network with a switch is not an option.  I can either use a
> mesh or the regular LAN in the datacenter.
> The systems are running PVE 6.1-3.
> Any help or hint is appreciated.
> Cheers
> frank
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