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Add interactive console support to VM instances #20

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Add interactive console support to VM instances #20

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2 changes: 1 addition & 1 deletion testcloud/config.py
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Original file line number Diff line number Diff line change
Expand Up @@ -164,7 +164,7 @@ def DATA_DIR(self, value):

# Extra cmdline args for the qemu invocation.
# Customize as needed :)
CMD_LINE_ARGS = []
CMD_LINE_ARGS = ["-append", "console=tty0 console=ttyS0,115200n8"]

@frantisekz frantisekz Nov 26, 2025

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This should go into the libvirt vm template instead of the default qemu args.

@skycastlelily skycastlelily Nov 28, 2025

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hmmm, I checked with the current implement, it works, if I add <cmdline>console=tty0 console=ttyS0,115200n8</cmdline> to generate of domain_configuration.py, it failed:

libvirt: QEMU Driver error : internal error: process exited while connecting to monitor: 2025-11-27T22:45:27.103873Z qemu-system-x86_64: -append only allowed with -kernel option
  Instance startup failed, retrying in 5 seconds...
  libvirt: QEMU Driver error : internal error: process exited while connecting to monitor: 2025-11-27T22:45:32.170500Z qemu-system-x86_64: -append only allowed with -kernel option

any clue on how to fix it? 😐

@frantisekz frantisekz Feb 25, 2026 •
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@skycastlelily You shouldn't be adding cmdline in there for console, but something like:

<console type="pty">
  <target type="virtio" port="1"/>
</console>

Should do the job.

CMD_LINE_ENVS = {}

# Extra coreos cmdline args for the qemu invocation.
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