Proxmox mystery reboot

Hello,

We have a proxmox cluster of 4 physical servers running on pve 8.2.2. we have observed an incident whereby all the four server mysteriously rebooted at same time.

I have checked proxmox syslog and related logs however could not find any reason for the same.

let me know is this a bug with the version or l am missing something.

Thanks and Regards
LinuxTeam