A VM prevents the web interface from working.

WhiteStarEOF

Active Member
Mar 6, 2012
96
10
28
So this is a strange little issue. We have a few VMs running on a Proxmox 4.0 machine. We needed a Windows 7 VM to act as a sort of management VM for some stuff running in the office. When this VM is running, after a couple of minutes we will no longer be able to access the web GUI. We will get errors like "Connection error - Server offline." If we have consoles open to VMs, they remain open and functioning normally.

Here is the VM configuration file.
ootdisk: sata0
cores: 1
ide2: none,media=cdrom
memory: 4096
name: Win7Mgmt
net0: e1000=DA:FF:EB:07:15:84,bridge=vmbr0
numa: 0
ostype: win7
sata0: SETNAS:102/vm-102-disk-1.qcow2,cache=writeback,size=60G
smbios1: uuid=1dc38dd8-be3e-4bd2-87ef-7883a84619c8
sockets: 2

Nothing out of the ordinary, I think. The only thing we're doing on this machine that we're not doing on others is one of the other VMs has a PCI Express card passed to it (a Sangoma A104). I wouldn't think this would affect this Winodws 7 VM, or Proxmox's web interface, but I thought I'd throw it out in case it was important.

The machine in question is AMD FX-8320E with 16GB of memory. Storage is provided via NFS from a FreeNAS machine. The total CPU across all VMs is less than the number of physical CPUs (I believe we're up to 7 CPUs used across the VMs). The total memory across all VMs is 10GB of the 16GB in the system.

We start the VM, wait a minute or two, lose access to the web interface. Turn off the VM, refresh the page or simply navigate to another spot in the interface, and we're back in.

Thoughts and opinions?


Edit:
Update on this. Apparently I can create a whole new VM, and the same thing happens.
 
Last edited:
Hi,

could it be that you have a ip conflict?
 

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