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To facilitate the creation of a simple OpenStack configuration with
a single control and compute node, several things should be known
at build time (since in this simple configuration, we are not using
dhcp, or other name resolution techniques):
- The IP of control node
- The IP of the compute node
- The IP of the node being built
From these values, the OpenStack components and support applications
(databases, access control, etc) are configured, as well as simple name
resolution generated at build time.
A single "hosts" bbclass should be provided with the following values:
COMPUTE_IP ?= "192.168.7.4"
COMPUTE_HOST ?= "compute"
CONTROLLER_IP ?= "192.168.7.2"
CONTROLLER_HOST ?= "controller"
MY_IP ?= "${CONTROLLER_IP}"
MY_HOST ?= "${CONTROLLER_HOST}"
The above example is for a control node, using the runqemu default addresses.
The openstack-base.bbclass is responsible for generating /etc/hosts and
/etc/hostname. Any image type that requires these values at boot tiem, should
inherit this class to allow its rootfs post population hooks to run and
generate the required configuration.
Signed-off-by: Bruce Ashfield <bruce.ashfield@windriver.com>
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Bruce Ashfield