Warning
This feature is available starting from the MCP 2019.2.3 maintenance update. Before enabling the feature, follow the steps described in Apply maintenance updates.
MCP enables you to define the path to an Random Number Generator (RNG) device
that will be used as the source of entropy on the host. The default source of
entropy is /dev/urandom. Other available options include /dev/random
and /dev/hwrng.
The example structure of the RNG definition in the Nova pillar:
nova:
controller:
libvirt:
rng_dev_path: /dev/random
compute:
libvirt:
rng_dev_path: /dev/random
The procedure included in this section can be used for both existing and new MCP deployments.
To define the path to an RNG device:
Log in to the Salt Master node.
In classes/cluster/<cluster_name>/openstack/control.yml, define the
rng_dev_path parameter for nova:contoroller:
nova:
controller:
libvirt:
rng_dev_path: /dev/random
In classes/cluster/<cluster_name>/openstack/compute/init.yml, define
the rng_dev_path parameter for nova:compute:
nova:
compute:
libvirt:
rng_dev_path: /dev/random
Apply the changes:
salt -C 'I@nova:controller' state.sls nova.controller
salt -C 'I@nova:compute' state.sls nova.compute