If you are using VPC i recommend you to use openvswitch and do a lacp with the following parameters:
bond_mode=balance-tcp lacp=active
I put a piece of a sample config
apt install openvswitch-switch
auto lo
iface lo inet loopback
auto eno1...
I see you have bond for interfaces nic0 nic4 with a policy of xmit-hash-policy in layer 2+3 this uses a combination of MAC address and IP addresses to do the bond for balancing.
May your switch does not support this feature?
You can ping between...
Check connection via cluster interface (you need to separate via vlan or dedicated nic cluster traffic)
If you didn´'t do this yo can have troubles with cluster
Set up your bond, use it directly or through a bridge if you want VMs on it. And either set that bridge as VLAN Aware if you only need VLANs for VMs, or add a VLAN if you want to manage your node through it.. and a bridge on top of it if you also...
Try to set these registry keys (mergeide.zip) Then uninstall vmware tools. (bakcup before)
Download Mergeide
Then try to boot first in IDE, if yo have no issues, then use SATA and go up until SCSI for better performance. In first successful boot...
What version of PBS are you running?
Uncheck Freeze/thaw guest filesystem on backup for consistency.
Check network connection and MTU on both equipment.
IMO, there are a lot of factors dealing with RAM, because in certain conditions you need to raise the memory of some virtual machines, if you are running CEPH, you can use the empty hypervisor to provision VM (leaving room to move VM's out of...