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Merge "doc: Add solution to live migration ssh issues"

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Zuul 2019-02-04 22:22:46 +00:00 committed by Gerrit Code Review
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commit 7997fb68bb
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doc/source/admin/support-compute.rst
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@ -112,6 +112,35 @@ Also, check your HTTP proxy settings to see whether they cause problems with
``novarc`` creation.
Live migration permission issues
--------------------------------
Problem
~~~~~~~
When live migrating an instance, you may see errors like the below:
.. code-block:: shell
libvirtError: operation failed: Failed to connect to remote libvirt URI
qemu+ssh://stack@cld6b16/system: Cannot recv data: Host key verification
failed.: Connection reset by peer
Solution
~~~~~~~~
Ensure you have completed all the steps outlined in
:doc:`/admin/ssh-configuration`. In particular, it's important to note
that the ``libvirt`` process runs as ``root`` even though it may be connecting
to a different user (``stack`` in the above example). You can ensure everything
is correctly configured by attempting to connect to the remote host via the
``root`` user. Using the above example once again:
.. code-block:: shell
$ su - -c 'ssh stack@cld6b16'
Instance errors
---------------