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glance
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useful-image-properties.rst: Update default RNG source 

Nova's libvirt driver has changed[*] the default source from /dev/random
to /dev/urandom:

    "Since libvirt 1.3.4, any RNG (Random Number Generator) device path
    (that returns random numbers when read!) is accepted. However, the
    recommended source of entropy is `/dev/urandom` (it is non-blocking;
    and doesn't have the same limitations of `dev/random`, which is a
    legacy interface)."

Update the relevant Glance documentation to reflect that.

[*] https://git.openstack.org/cgit/openstack/nova/commit/?id=814bfd93

Change-Id: I656b5c244b98202f3c8d019d0bbeddc4e7c0314a
Signed-off-by: Kashyap Chamarthy <kchamart@redhat.com>
This commit is contained in:
Kashyap Chamarthy 2018-07-02 14:29:01 +02:00
parent 54329c6a21
commit 9a893e80c2
1 changed files with 3 additions and 3 deletions
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6
doc/source/admin/useful-image-properties.rst
View File

@ -268,9 +268,9 @@ Here is a list of useful image properties and the values they expect.
configuring the instance's flavor. By default:
* The generator device is disabled.
* ``/dev/random`` is used as the default entropy source. To specify a
physical HW RNG device, use the following option in the nova.conf
file:
* ``/dev/urandom`` is used as the default entropy source. To
specify a physical HW RNG device, use the following option in
the nova.conf file:
.. code-block:: ini