Enables OpenDaylight Clustering in HA deployments

Previously ODL was restricted to only running on the first node in an
tripleO HA deployment.  This patches enables clustering for ODL and
allows multiple ODL instances (minimum 3 for HA).

Partially-implements: blueprint opendaylight-ha

Change-Id: Ic9a955a1c2afc040b2f9c6fb86573c04a60f9f31
Signed-off-by: Tim Rozet <trozet@redhat.com>

1 files changed, 23 insertions, 7 deletions

diff --git a/manifests/profile/base/neutron/opendaylight.pp b/manifests/profile/base/neutron/opendaylight.pp
index 556fe63..b5e6d11 100644
--- a/manifests/profile/base/neutron/opendaylight.pp
+++ b/manifests/profile/base/neutron/opendaylight.pp
@@ -22,19 +22,35 @@
 #   (Optional) The current step of the deployment
 #   Defaults to hiera('step')
 #
-# [*primary_node*]
-#   (Optional) The hostname of the first node of this role type
-#   Defaults to hiera('bootstrap_nodeid', undef)
+# [*odl_api_ips*]
+#   (Optional) List of OpenStack Controller IPs for ODL API
+#   Defaults to hiera('opendaylight_api_node_ips')
+#
+# [*node_name*]
+#   (Optional) The short hostname of node
+#   Defaults to hiera('bootstack_nodeid')
 #
 class tripleo::profile::base::neutron::opendaylight (
   $step         = hiera('step'),
-  $primary_node = hiera('bootstrap_nodeid', undef),
+  $odl_api_ips  = hiera('opendaylight_api_node_ips'),
+  $node_name    = hiera('bootstack_nodeid')
 ) {
 
   if $step >= 1 {
-    # Configure ODL only on first node of the role where this service is
-    # applied
-    if $primary_node == downcase($::hostname) {
+    validate_array($odl_api_ips)
+    if empty($odl_api_ips) {
+      fail('No IPs assigned to OpenDaylight Api Service')
+    } elsif size($odl_api_ips) == 2 {
+      fail('2 node OpenDaylight deployments are unsupported.  Use 1 or greater than 2')
+    } elsif size($odl_api_ips) > 2 {
+      $node_string = split($node_name, '-')
+      $ha_node_index = $node_string[-1] + 1
+      class { '::opendaylight':
+        enable_ha     => true,
+        ha_node_ips   => $odl_api_ips,
+        ha_node_index => $ha_node_index,
+      }
+    } else {
       include ::opendaylight
     }
   }