openstack-ansible-lxc_conta.../releasenotes/notes/container-static-mac-addresses-9aae098fdc8a57cc.yaml
Kevin Carter f924bfb418 Add an option to generate fixed MAC addresses
This change resolves a long standing issue where a container's mac
address regenerates when it was restarted. In most cases when a
container is restarted and it's mac address is rotated and nothing bad
happens; mac learning will resolve itself given enough time in just
about all situations. However services like neutron-agents are long
lived and are highly sensitive to network changes. These types of
services expect consistent hardware addressing and when mac
addresses rotate may become confused.

To limit the possibility of prolonged downtime caused by mac address
rotation on network sensitive containers an option has been created to
allow a container to have a fixed mac address. If this option is enabled
the container will generate fixed addresses for all networks assosiated
with the specific container. The option is `lxc_container_fixed_mac` and
it has a default value of "false".

Change-Id: Ie1a8dc172c45fc2b4cfa724a2bafa67cb481ba73
Signed-off-by: Kevin Carter <kevin.carter@rackspace.com>
2016-10-15 05:30:47 +00:00

16 lines
757 B
YAML

---
features:
- LXC containers will now generate a fixed mac address on all
network interfaces when the option `lxc_container_fixed_mac`
is set to **true**. This feature was implemented to resolve
issues with dynamic mac addresses in containers generally
experienced at scale with network intensive services.
fixes:
- LXC containers will now have the ability to use a fixed mac
address on all network interfaces when the option
`lxc_container_fixed_mac` is set **true**. This change will
assist in resolving a long standing issue where network intensive
services, such as neutron and rabbitmq, can enter a confused state
for long periods of time and require rolling restarts or internal
system resets to recover.