----- On May 11, 2017, at 3:19 PM, Pavel Grunt pgrunt@xxxxxxxxxx wrote: > On Thu, 2017-05-11 at 15:03 +0200, Lentes, Bernd wrote: >> Hi, >> >> sorry for asking a simple question, but i'm confused. What is virt- >> viewer intended to be ? >> To connect directly to virtual machine consoles, e.g. with VNC ? > and SPICE > >> Or connect to libvirtd which runs e.g. on a remote linux host ? >> Or both ? > can do both - to connect to vm, it first has to connect to libvirt > There is also remote-viewer which allows you to connect directly to > the vm > >> >> If i'm able to connect to libvirtd on a remote host, what can i do ? >> I think the functionality of virt-viewer is limited compared to >> virt-manager. > compared to virt-manager it has multimonitor support, folder sharing, > it shows progress bar with file transfer (SPICE features). > remote-viewer also works on Windows. > > >> This page (https://libvirt.org/windows.html) gaves me the impression >> that i can connect with virt-viewer to a libvirtd on a remote host. >> >> I tried to connect to a libvirtd on a linux host host using virt- >> viewer and the following in the adress bar: >> qemu+tcp://192.168.100.10 and qemu+tcp://192.168.100.1016509, but >> didn't succeed. > > please see the man page, it has a few examples: > virt-viewer -c qemu+ssh://root@host/system > >> The port 16509 on the linux host is opened in the firewall and >> libvirtd is listening on it. >> >> Is virt-viewer able to do this ? >> Hi guys, thanks for your quick answer. I have some further questions. I will leave windows and try to connect to libvirt or guest consoles from a linux box. My scenario is that i have a few guests which are controlled by pacemaker in a two node cluster. I'd like to have the ability to connect to the consoles when the guests have problems in booting. This way maybe i can identify the problems. I don't want to open the libvirt port if possible but connect to libvirt/guest consoles using ssh. I managed to connect to the hypervisor using virsh and ssh from a remote linux box. My idea is that i configure in each guest a vnc display with increasing port numbers, starting from 5900, so i can connect to each guest indepently, and to several concurrently. I'd like to bind the vnc display just to the localhost interface because of not exposing this port. I can connect to the hypervisor with the following: virt-viewer -vc qemu+ssh://root@ha-idg-1/system Then i get a list of the running guests (currently only one). I choose it, and then ... nothing happens :-( Virt-viewer says "waiting for display 1...", and i get the following message on my terminal: "(virt-viewer:810): Gtk-WARNING **: Allocating size to VncDisplay 0x10282f0 without calling gtk_widget_get_preferred_width/height(). How does the code know the size to allocate? " This is the output of my shell: (virt-viewer:8414): virt-viewer-DEBUG: connecting ... (virt-viewer:8414): virt-viewer-DEBUG: Opening connection to libvirt with URI qemu+ssh://root@ha-idg-1/system Opening connection to libvirt with URI qemu+ssh://root@ha-idg-1/system Password: (virt-viewer:8414): virt-viewer-DEBUG: initial connect (virt-viewer:8414): virt-viewer-DEBUG: notebook show status 0x1950200 (virt-viewer:8414): Gtk-WARNING **: Theme directory base/ of theme oxygen has no size field (virt-viewer:8414): virt-viewer-DEBUG: virt_viewer_app_set_uuid_string: UUID changed to f08c2f32-fe35-137a-0e9d-fa7485d57974 (virt-viewer:8414): virt-viewer-DEBUG: notebook show status 0x1950200 (virt-viewer:8414): virt-viewer-DEBUG: Guest mausdb_vm is running, determining display Guest mausdb_vm is running, determining display (virt-viewer:8414): virt-viewer-DEBUG: Set connect info: (null),(null),-1,-1,(null),(null),(null),0 (virt-viewer:8414): virt-viewer-DEBUG: Guest mausdb_vm has a vnc display Guest mausdb_vm has a vnc display (virt-viewer:8414): virt-viewer-DEBUG: Guest graphics address is 127.0.0.1:5900 (virt-viewer:8414): virt-viewer-DEBUG: Set connect info: ha-idg-1,127.0.0.1,5900,-1,ssh,(null),root,0 (virt-viewer:8414): virt-viewer-DEBUG: Error operation forbidden: read only access prevents virDomainOpenGraphicsFD (virt-viewer:8414): virt-viewer-DEBUG: After open connection callback fd=-1 (virt-viewer:8414): virt-viewer-DEBUG: Opening indirect TCP connection to display at 127.0.0.1:5900 Opening indirect TCP connection to display at 127.0.0.1:5900 (virt-viewer:8414): virt-viewer-DEBUG: Setting up SSH tunnel via root@ha-idg-1 Setting up SSH tunnel via root@ha-idg-1 (virt-viewer:8414): virt-viewer-DEBUG: notebook show status 0x1950200 (virt-viewer:8414): virt-viewer-DEBUG: reconnect_poll: 0 (virt-viewer:8414): virt-viewer-DEBUG: notebook show status 0x1950200 (virt-viewer:8414): virt-viewer-DEBUG: Insert display 0 0x1897c60 (virt-viewer:8414): virt-viewer-DEBUG: notebook show status 0x1950200 Password: (virt-viewer:8414): virt-viewer-DEBUG: Allocated 1024x740 (virt-viewer:8414): virt-viewer-DEBUG: Child allocate 1024x640 (virt-viewer:8414): Gtk-WARNING **: Allocating size to VncDisplay 0x1a2a2f0 without calling gtk_widget_get_preferred_width/height(). How does the code know the size to allocate? (virt-viewer:8414): virt-viewer-DEBUG: Window closed (virt-viewer:8414): virt-viewer-DEBUG: close vnc=0x1a2a2f0 (virt-viewer:8414): virt-viewer-DEBUG: Not removing main window 0 0x187ec60 (virt-viewer:8414): virt-viewer-DEBUG: Disconnected (virt-viewer:8414): virt-viewer-DEBUG: close vnc=0x1a2a520 (virt-viewer:8414): virt-viewer-DEBUG: notebook show status 0x1950200 (virt-viewer:8414): virt-viewer-DEBUG: Guest mausdb_vm display has disconnected, shutting down Guest mausdb_vm display has disconnected, shutting down pc65518:~ # Password: Password: Permission denied (publickey,keyboard-interactive). pc65518:~ # pc65518:~ # pc65518:~ # Do i have to provide the desired resolution ? How can i do that ? I tried virt-viewer with -f, but that didn't help. What means "(virt-viewer:8414): virt-viewer-DEBUG: Error operation forbidden: read only access prevents virDomainOpenGraphicsFD (virt-viewer:8414): virt-viewer-DEBUG: After open connection callback fd=-1" ? Is my idea basically possible ? Or is it the problem that vnc is just listening on localhost ? I changed the ip in the config of the guest to 0.0.0.0, but still didn't succeed. This is the config of my guest: <!-- WARNING: THIS IS AN AUTO-GENERATED FILE. CHANGES TO IT ARE LIKELY TO BE OVERWRITTEN AND LOST. Changes to this xml configuration should be made using: virsh edit mausdb_vm or other application using the libvirt API. --> <domain type='kvm'> <name>mausdb_vm</name> <uuid>f08c2f32-fe35-137a-0e9d-fa7485d57974</uuid> <memory unit='KiB'>8197376</memory> <currentMemory unit='KiB'>8197376</currentMemory> <vcpu placement='static'>4</vcpu> <os> <type arch='x86_64' machine='pc-i440fx-1.4'>hvm</type> <boot dev='hd'/> <bootmenu enable='yes'/> </os> <features> <acpi/> <apic/> <pae/> </features> <clock offset='utc'/> <on_poweroff>destroy</on_poweroff> <on_reboot>restart</on_reboot> <on_crash>destroy</on_crash> <devices> <emulator>/usr/bin/qemu-kvm</emulator> <disk type='block' device='disk'> <driver name='qemu' type='raw' cache='none'/> <source dev='/dev/vg_cluster_01/lv_cluster_01'/> <target dev='vda' bus='virtio'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/> </disk> <!-- disk type='file' device='cdrom'> <driver name='qemu' type='raw'/> <source file='/mnt/idg-2/SysAdmin_AG_Wurst/software_und_treiber/linux/knoppix/7.2/KNOPPIX_V7.2.0DVD-2013-06-16-DE.iso'/> <target dev='hdc' bus='ide'/> <readonly/> <address type='drive' controller='0' bus='1' target='0' unit='0'/> </disk --> <controller type='usb' index='0'> <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x2'/> </controller> <controller type='pci' index='0' model='pci-root'/> <controller type='ide' index='0'> <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x1'/> </controller> <interface type='bridge'> <mac address='52:54:00:37:92:01'/> <source bridge='br0'/> <model type='virtio'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/> </interface> <input type='mouse' bus='ps2'/> <input type='keyboard' bus='ps2'/> <graphics type='vnc' port='5900' sharePolicy='allow-exclusive'> <listen type='address' address='127.0.0.1'/> </graphics> <!-- lauscht nur an localhost, vcnviewer localhost:5900 --> <video> <model type='cirrus' vram='9216' heads='1'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/> </video> <memballoon model='virtio'> <address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x0'/> </memballoon> </devices> </domain> Thanks. Bernd Helmholtz Zentrum Muenchen Deutsches Forschungszentrum fuer Gesundheit und Umwelt (GmbH) Ingolstaedter Landstr. 1 85764 Neuherberg www.helmholtz-muenchen.de Aufsichtsratsvorsitzende: MinDir'in Baerbel Brumme-Bothe Geschaeftsfuehrer: Prof. Dr. Guenther Wess, Heinrich Bassler, Dr. Alfons Enhsen Registergericht: Amtsgericht Muenchen HRB 6466 USt-IdNr: DE 129521671 _______________________________________________ virt-tools-list mailing list virt-tools-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/virt-tools-list
