Unknown machines and error hosts after update

We updated our OpenNebula to the latest version and everything is OK but… Here we are:

All virtual machines are UNKNOWN STATUS right now:

And our host passed to ERROR STATUS.

Anyone can help us? We’re look at oned.log and they said something related to the hypervisor (Error monitoring Host XXXX (0): error: failed to connect to the hypervisor).


Which hypervisor are you using? Does it give any other information in the log?

It says:

Wed Jan 27 15:50:04 2016 [Z0][ONE][E]: Error monitoring Host sigcloud01 (3): error: failed to connect to the hypervisor
error: error from service: CheckAuthorization: Did not receive a reply. Possible causes include: the remote application did not send a reply, the message bus security policy blocked the reply, the reply timeout expired, or the network connection was broken.
ERROR MESSAGE --8<------
Error executing kvm.rb
MODELNAME=“Intel® Xeon® CPU E5-2440 0 @ 2.40GHz”

We’ve solved that problem following the instructions here, thanks to Vlastimil_Holer’s post: