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.. _qemu_debug_info:
QEMU tutorial debugging
***********************
You may wish to test out the commands in this tutorial as a
:download:`script<qemu-script.sh>` to check for copy-paste mistakes.
If you successfully launched the virtual machine, but couldn't log in,
there are a few places to check to debug your setup.
To debug, answer the following questions:
Did ``cloud-init`` discover the IMDS webserver?
===============================================
The webserver should print a message in the terminal for each request it
receives. If it didn't print out any messages when the virtual machine booted,
then ``cloud-init`` was unable to obtain the config. Make sure that the
webserver can be locally accessed using :command:`curl` or :command:`wget`.
.. code-block:: sh
$ curl 0.0.0.0:8000/user-data
$ curl 0.0.0.0:8000/meta-data
$ curl 0.0.0.0:8000/vendor-data
Did the IMDS webserver serve the expected files?
================================================
If the webserver prints out ``404 errors`` when launching QEMU, then check
that you started the server in the temp directory.
Were the configurations inside the file correct?
================================================
When launching QEMU, if the webserver shows that it succeeded in serving
:file:`user-data`, :file:`meta-data` and :file:`vendor-data`, but you cannot
log in, then you may have provided incorrect cloud-config files. If you can
mount a copy of the virtual machine's filesystem locally to inspect the logs,
it should be possible to get clues about what went wrong.
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