Proxmox reboots automatically

[ixproxmox]

Having 40-50 vm on a server running the same jobs and for no reason, just one of them does this without warning (reboots):

Jun 21 16:24:47 est1 QEMU[61374]: kvm: terminating on signal 15 from pid 35204 (/usr/sbin/qmeventd)
Jun 21 16:24:48 est1 kernel: fwbr174i0: port 2(tap174i0) entered disabled state
Jun 21 16:24:48 est1 NetworkManager[55873]: <info> [1624285488.4479] device (tap174i0): state change: activated -> unmanaged (reason 'connection-assumed', sys-iface-state: 'external')
Jun 21 16:24:48 est1 NetworkManager[55873]: <info> [1624285488.4482] device (fwbr174i0): bridge port tap174i0 was detached
Jun 21 16:24:48 est1 NetworkManager[55873]: <info> [1624285488.4482] device (tap174i0): released from master device fwbr174i0

Is it possible to find out why?

 

[aaron]

Is it always the same?
How much memory is stil available?
Do you see any `OOM` (out of memory) message in the syslogs?