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Add IPv6 support to devstack infrastructure

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By default, most Openstack services are bound to 0.0.0.0
and service endpoints are registered as IPv4 addresses.
With this change we introduce two new variables to control
this behavior:

SERVICE_IP_VERSION - can either be "4" or "6".

When set to "4" (default if not set) devstack will operate
as today - most services will open listen sockets on 0.0.0.0
and service endpoints will be registered using HOST_IP as the
address.

When set to "6" devstack services will open listen sockets on ::
and service endpoints will be registered using HOST_IPV6 as the
address.

There is no support for "4+6", more work is required for that.

HOST_IPV6 - if SERVICE_IP_VERSION=6 this must be an IPv6
address configured on the system.

Some existing services, like the Openvswitch agent, will continue
to use IPv4 addresses for things like tunnel endpoints.  This is
a current restriction in the code and can be updated at a later
time.  This change is just a first step to supporting IPv6-only
control and data planes in devstack.

This change is also partly based on two previous patches,
https://review.openstack.org/#/c/140519/ and
https://review.openstack.org/#/c/176898/

Change-Id: I5c0b775490ce54ab104fd5e89b20fb700212ae74
Co-Authored-By: Sean Collins <sean@coreitpro.com>
Co-Authored-By: Baodong Li <baoli@cisco.com>
Co-Authored-By: Sridhar Gaddam <sridhar.gaddam@enovance.com>
Co-Authored-By: Adam Kacmarsky <adam.kacmarsky@hp.com>
Co-Authored-By: Jeremy Alvis <jeremy.alvis@hp.com>
This commit is contained in:
Brian Haley
2015-06-16 13:14:31 -04:00
committed by Jeremy Alvis
parent 52844a11dd
commit 180f5eb652
13 changed files with 154 additions and 26 deletions
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lib/database
+11 -2
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@@ -70,10 +70,19 @@ function initialize_database_backends {
# For backward-compatibility, read in the MYSQL_HOST/USER variables and use
# them as the default values for the DATABASE_HOST/USER variables.
MYSQL_HOST=${MYSQL_HOST:-127.0.0.1}
MYSQL_HOST=${MYSQL_HOST:-$SERVICE_LOCAL_HOST}
MYSQL_USER=${MYSQL_USER:-root}
DATABASE_HOST=${DATABASE_HOST:-${MYSQL_HOST}}
# Set DATABASE_HOST equal to MYSQL_HOST. If SERVICE_IP_VERSION is equal to 6,
# set DATABASE_HOST equal to [MYSQL_HOST]. MYSQL_HOST cannot use brackets due
# to mysql not using bracketing for IPv6 addresses. DATABASE_HOST must have brackets
# due to sqlalchemy only reading IPv6 addresses with brackets.
if [[ "$SERVICE_IP_VERSION" == 6 ]]; then
DATABASE_HOST=${DATABASE_HOST:-[$MYSQL_HOST]}
else
DATABASE_HOST=${DATABASE_HOST:-${MYSQL_HOST}}
fi
DATABASE_USER=${DATABASE_USER:-${MYSQL_USER}}
if [ -n "$MYSQL_PASSWORD" ]; then