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20.3. SPICE Log Files
SPICE log files are useful when troubleshooting SPICE connection issues. To start SPICE debugging, change the log level to
debugging
. Then, identify the log location.
Both the clients used to access the guest machines and the guest machines themselves have SPICE log files. For client side logs, if a SPICE client was launched using the native client, for which a
console.vv
file is downloaded, use the remote-viewer
command to enable debugging and generate log output.
20.3.1. SPICE Logs for Hypervisor SPICE Servers
Log Type | Log Location | To Change Log Level: |
---|---|---|
Host/Hypervisor SPICE Server
|
/var/log/libvirt/qemu/(guest_name).log
|
Run
export SPICE_DEBUG_LEVEL=5 on the host/hypervisor prior to launching the guest. This variable is parsed by QEMU, and if run system-wide will print the debugging information of all virtual machines on the system. This command must be run on each host in the cluster. This command works only on a per-host/hypervisor basis, not a per-cluster basis.
|
20.3.2. SPICE Logs for Guest Machines
Log Type | Log Location | To Change Log Level: |
---|---|---|
Windows Guest
|
C:\Windows\Temp\vdagent.log
C:\Windows\Temp\vdservice.log
|
Not applicable
|
Red Hat Enterprise Linux Guest
|
Use
journalctl as the root user.
|
To run the
spice-vdagentd service in debug mode, as the root user create a /etc/sysconfig/spice-vdagentd file with this entry: SPICE_VDAGENTD_EXTRA_ARGS=”-d -d”
To run
spice-vdagent in debug mode, from the command line:
$ killall - u $USER spice-vdagent $ spice-vdagent -x -d [-d] [ ∣& tee spice-vdagent.log ] |
20.3.3. SPICE Logs for SPICE Clients Launched Using console.vv Files
For Linux client machines:
- Enable SPICE debugging by running the
remote-viewer
command with the--spice-debug
option. When prompted, enter the connection URL, for example, spice://[virtual_machine_IP]:[port].# remote-viewer --spice-debug
- To run SPICE client with the debug parameter and to pass a .vv file to it, download the
console.vv
file and run theremote-viewer
command with the--spice-debug
option and specify the full path to theconsole.vv
file.# remote-viewer --spice-debug /path/to/console.vv
For Windows client machines:
- In versions of virt-viewer 2.0-11.el7ev and later,
virt-viewer.msi
installs virt-viewer and debug-viewer.exe. - Run the remote-viewer command with the
spice-debug
argument and direct the command at the path to the console:remote-viewer --spice-debug path\to\console.vv
- To view logs, connect to the virtual machine, and you will see a command prompt running GDB that prints standard output and standard error of remote-viewer.