Modfying vnc configuration on KVM

visrh-vnc-config.md

• Para modificar vms KVM em execução podemos usar o virsh.

• Para o virsh se conectar ao "kvm" (libvirt) será necessário criar uma credencial no libvirt:

# saslpasswd2 -a libvirt glichti

• Para verificar as credenciais já existentes:

# sasldblistusers2 -f /etc/libvirt/passwd.db
glichti@kvm-server: userPassword

Usando o virsh:

• Conectando ao KVM(Libvirt)

# virsh
virsh # connect
Please enter your authentication name: glichti
Please enter your password:

• Listando VMs

virsh # list
 Id    Name                           State
----------------------------------------------------
 8     MQUEUE                         running
 10    NGINX                          running

• Verificando a configuração atual do VNC de uma VM:

virsh # qemu-monitor-command MQUEUE --hmp 'info vnc'
Server:
     address: 0.0.0.0:5902
        auth: vnc
Client: none

• Desabilitando o vnc da VM

virsh # qemu-monitor-command MQUEUE --hmp 'change vnc none'
virsh # qemu-monitor-command MQUEUE --hmp 'info vnc'
Server: disabled

• Habilitando o VNC da VM sem senha:

virsh # qemu-monitor-command MQUEUE --hmp 'change vnc :2'
virsh # qemu-monitor-command MQUEUE --hmp 'info vnc'
Server:
     address: 0.0.0.0:5902
        auth: none
Client: none

• Listando clientes conectados ao vnc:

virsh # qemu-monitor-command MQUEUE --hmp 'info vnc'
Server:
     address: 0.0.0.0:5902
        auth: none
Client:
     address: 127.0.0.1:45617
  x509_dname: none
    username: none