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This article mainly shows you "how to configure kvm virtual machine vnc and spice", which is easy to understand and clear. I hope it can help you solve your doubts. Let me lead you to study and learn how to configure kvm virtual machine vnc and spice.

I. brief introduction

Access to the KVM virtual machine on the virtual host through vnc or spice can be set directly through the graphical interface virt-manager, but it is modified here through the xml configuration file.

2. Detailed explanation 1. VNC access

Vnc access to virtual machines is not the installation and configuration of vnc servers in kvm virtual machines, but through the IP address and port of virtual hosts. Kvm virtualization supports vnc much better than xen. Configuring VNC to access virtual machines on virtual hosts is also to provide one more way to access virtual machines.

(1) modify qemu.conf (or not. Default is 127.0.0.1)

# vi / etc/libvirt/qemu.conf

Vnc_listen = "0.0.0.0"

Restart libvirt

# systemctl restart libvirtd.service

Vnclisten default binding 127.0.0.1, specify VNC binding 0.0.0.0 in the configuration file, there is no need to specify the vnclisten parameter when installing the kvm virtual machine. When there are many virtual machines on the virtual host, if you specify the port of each virtual machine, it will be very messy, so use 0.0.0.0 to automatically assign ports.

(2) modify the configuration file of the target virtual machine smb3.1

# virsh list-all

# virsh edit smb3.1

# virsh start smb3.1

(3) View the vnc port on which the virtual machine is running

View vnc port # virsh vncdisplay smb3.1

: 0

You can also dynamically view the xml configuration file # virsh dumpxml smb3.1 of the virtual machine through the virsh command

(4) vnc login

You can log in under windows through tools such as vnc viewer or TightVNC or RealVNC.

Linux can also be accessed through # virt-viewer-connect qemu:///system smb3.1, and non-native linux can be accessed through # virt-viewer qemu+ssh://root@192.168.40.125/system smb3.1.

(5) Login with vnc source code

The source code of vnc in krdc/vnc can be found in the source code package kdenetwork of the kde desktop, and vncview.cpp, vncclientthread.cpp and remoteview.cpp can be extracted to run vnc.

# include "widget.h"

# include "vncview.h"

Widget::Widget (QWidget * parent)

: QWidget (parent, Qt::WindowMinimizeButtonHint | Qt::WindowCloseButtonHint)

{

Resize (90020,90020,90020)

VncView * vncView = new VncView (this, QUrl ("vnc://:@192.168.40.125:5901"))

VncView- > enableScaling (true)

VncView- > scaleResize (900,900)

VncView- > show ()

VncView- > start ()

}

Widget::~Widget ()

{

}

2. Access via SPICE

(1) modify the configuration file of the target virtual machine smb3.1

# virsh list-all

# virsh edit smb3.0

[html] view plain copy

# virsh start smb3.0

(2) View the vnc port on which the virtual machine is running

# netstat-tunlp

A

Or dynamically view the xml configuration file # virsh dumpxml smb3.0 of the virtual machine through the virsh command

You can also use the command # spicy-h 127.0.0.1-p 5900 (you need to install the spice-gtk-tools package).

(4) Login with spice source code

Spice-gtk provides a complete gtk interface.

[html] view plain copy

# include

# include

# include

# include

# include

# include

# include

Static GtkWidget * main_window

Static SpiceSession * spice_session

Static SpiceDisplay * spice_display

Static char * host

Static char * port

Static void channel_new (SpiceSession * s, SpiceChannel * c, gpointer * data)

{

Int id = 0

G_object_get (c, "channel-id", & id, NULL)

If (SPICE_IS_MAIN_CHANNEL (c)) {

Fprintf (stdout, "new main channel\ n")

Return

}

If (SPICE_IS_DISPLAY_CHANNEL (c)) {

Fprintf (stdout, "new display channel (#% d), creating window\ n", id)

Spice_display = spice_display_new (s, id)

Gtk_container_add (GTK_CONTAINER (main_window), GTK_WIDGET (spice_display))

Gtk_widget_show_all (main_window)

Return

}

}

Static void usage ()

{

Fprintf (stdout, "spice-client: A spice client\ n"

"Usage: spice-client [options]...\ n"

"- h,-- host\ n"

"Set address of spice server\ n"

"- p,-- port\ n"

"Set port of spice server\ n"

"- e,-- help\ n"

"Print help and exit\ n"

);

}

Static void parse_cmd (int argc, char * argv [])

{

Int c, e = 0

If (argc = = 1) {

Usage ()

Exit (1)

}

Const struct option long_options [] = {

{"help", 0,0,'e'}

{"host", 0,0,'h'}

{"port", 0,0,'p'}

{0, 0, 0, 0}

}

While (c = getopt_long (argc, argv, "eh:p:"

Long_options, NULL))! = EOF) {

Switch (c) {

Case'ebacks:

Goto failed

Case'hills:

Host = optarg

Break

Case'packs:

Port = optarg

Break

Default:

EBay +

Break

}

}

If (e | | argc > optind) {

Goto failed

}

If (host = = NULL | | port = = NULL) {

Fprintf (stderr, "No host or port found\ n")

Goto failed

}

Return

Failed:

Usage ()

Exit (1)

}

Int main (int argc, char * argv [])

{

Parse_cmd (argc, argv)

Gtk_init (& argc, & argv)

Main_window = gtk_window_new (GTK_WINDOW_TOPLEVEL)

Spice_session = spice_session_new ()

G_object_set (spice_session, "host", host, NULL)

G_object_set (spice_session, "port", port, NULL)

G_signal_connect (spice_session, "channel-new"

G_CALLBACK (channel_new), NULL)

If (! spice_session_connect (spice_session)) {

Fprintf (stderr, "spice_session_connect failed\ n")

Exit (1)

}

Gtk_main ()

Return 0

}

Gcc-o spice-client client.c `pkg-config-- cflags-- libs spice-client-gtk- 2.0`

. / spice-client-h 127.0.0.1-p 5900

These are all the contents of the article "how to configure kvm virtual machine vnc and spice". Thank you for reading! I believe we all have a certain understanding, hope to share the content to help you, if you want to learn more knowledge, welcome to follow the industry information channel!

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