[SOLVED] Apply qm.conf VNC setting

D

DLZ-TVotR

Member
Sep 2, 2020
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I have just added args: -vnc 0.0.0.0:50 to a VMs qm.conf, but it seems to have no effect. Is there a command I need to run to apply it?

Code: 
root@pve:/etc/pve/local/qemu-server# qm config 114 --current
args: -vnc 0.0.0.0:50

it is showing in the config, but the server is not listening on port 5950 as expected:

Code: 
root@pve:/etc/pve/local/qemu-server# ss -pln | grep 5950
root@pve:/etc/pve/local/qemu-server#

and connections are refused.

Do I need to also run change vnc 0.0.0.0:50 in the vms monitor? The whole reason I am looking to do it this way in qm.conf is for persistence. The changes I send through monitor don't seem to stick even if the VMs are not rebooted, they timeout at some point.
 
  • Add in the VM´s configuration file /etc/pve/local/qemu-server/<KVM ID>.conf a line which specifies the VNC display number as follows ("77" in the example below):
args: -vnc 0.0.0.0:77


The display number can be freely chosen, but each number must occur only once. VNC service listens then at port 5900+display_number. Note that connections via noVNC start using display number 0 consecutively therefore it´s recommended to use higher numbers in order to avoid conflicts.


  • Connect from VNC client to Proxmox host ip address and port as specified (5977 in the above example)

Note: Using this method it not possible to set a VNC password.
Click to expand...


Yeah, I am following the above section.

I have added the line to <vm>.conf file

Code: 
root@pve:/etc/pve/local/qemu-server# cat 114.conf
bootdisk: scsi0
cores: 2
ide2: ISOs:iso/debian.iso,media=cdrom
memory: 2048
name: debian
net0: virtio=B2:67:12:95:28:0F,bridge=vmbr0,firewall=1
numa: 0
ostype: l26
scsi0: LocalHDD:114/vm-114-disk-0.qcow2,size=32G
scsihw: virtio-scsi-pci
smbios1: uuid=61f8e25d-3bb3-4df1-8e8f-5abb7d843009
sockets: 1
vmgenid: 2aa980c2-06e8-417b-952f-374c6ea0c31a
args: -vnc 0.0.0.0:50


It is showing in the vms current config:


Code: 
root@pve:/etc/pve/local/qemu-server# qm config 114 --current
args: -vnc 0.0.0.0:50
bootdisk: scsi0
cores: 2
ide2: ISOs:iso/debian.iso,media=cdrom
memory: 2048
name: debian
net0: virtio=B2:67:12:95:28:0F,bridge=vmbr0,firewall=1
numa: 0
ostype: l26
scsi0: LocalHDD:114/vm-114-disk-0.qcow2,size=32G
scsihw: virtio-scsi-pci
smbios1: uuid=61f8e25d-3bb3-4df1-8e8f-5abb7d843009
sockets: 1
vmgenid: 2aa980c2-06e8-417b-952f-374c6ea0c31a
root@pve:/etc/pve/local/qemu-server#


yet connections are refused and the server is not listening on port 5950

Code: 
root@pve:/etc/pve/local/qemu-server# ss -pln | grep 5950
root@pve:/etc/pve/local/qemu-server#
 
I had to power off the VM entirely and then power it on for the change to have an effect:

Code: 
root@pve:/etc/pve/local/qemu-server# ss -pln | grep 5950
tcp                LISTEN              0                    1                                                                                           0.0.0.0:5950                                           0.0.0.0:*                         users:(("kvm",pid=17383,fd=27))


Could be worth adding that as a step in the "Configure VNC Access via Configuration File" section of the wiki.
 
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