configure horizon with memcached ipv6 when needed

* Add MemcachedIPv6 parameter
* If MemcachedIPv6 is set at True, configure Horizon with Memcached IPv6
  addresses.

This patch is required to make Horizon working when running IPv6
networks.

Change-Id: I752e727bfb9040b29f5d755f565fa6b54b9511c8

environments/network-isolation-v6.yaml

@@ -53,3 +53,5 @@ parameter_defaults:
   NovaIPv6: True
   # Enable IPv6 environment for RabbitMQ.
   RabbitIPv6: true
+  # Enable IPv6 environment for Memcached.
+  MemcachedIPv6: true

overcloud.yaml

@@ -104,6 +104,10 @@ parameters:
     type: string
     constraints:
       - custom_constraint: nova.keypair
+  MemcachedIPv6:
+    default: false
+    description: Enable IPv6 features in Memcached.
+    type: boolean
   NeutronExternalNetworkBridge:
     description: Name of bridge used for external network traffic.
     type: string
@@ -939,6 +943,7 @@ resources:
           KeystoneSSLCertificateKey: {get_param: KeystoneSSLCertificateKey}
           KeystoneNotificationDriver: {get_param: KeystoneNotificationDriver}
           KeystoneNotificationFormat: {get_param: KeystoneNotificationFormat}
+          MemcachedIPv6: {get_param: MemcachedIPv6}
           MysqlClusterUniquePart: {get_attr: [MysqlClusterUniquePart, value]}
           MysqlInnodbBufferPoolSize: {get_param: MysqlInnodbBufferPoolSize}
           MysqlMaxConnections: {get_param: MysqlMaxConnections}

puppet/controller.yaml

@@ -333,6 +333,10 @@ parameters:
     default: false
     description: Whether to manage IPtables rules.
     type: boolean
+  MemcachedIPv6:
+    default: false
+    description: Enable IPv6 features in Memcached.
+    type: boolean
   PurgeFirewallRules:
     default: false
     description: Whether IPtables rules should be purged before setting up the new ones.
@@ -1181,6 +1185,7 @@ resources:
         nova_enable_db_purge: {get_param: NovaEnableDBPurge}
         nova_ipv6: {get_param: NovaIPv6}
         corosync_ipv6: {get_param: CorosyncIPv6}
+        memcached_ipv6: {get_param: MemcachedIPv6}
         nova_password: {get_param: NovaPassword}
         nova_dsn:
           list_join:
@@ -1631,6 +1636,7 @@ resources:
                 tripleo::firewall::manage_firewall: {get_input: manage_firewall}
                 tripleo::firewall::purge_firewall_rules: {get_input: purge_firewall_rules}
                 # Misc
+                memcached_ipv6: {get_input: memcached_ipv6}
                 memcached::listen_ip: {get_input: memcached_network}
                 neutron_public_interface_ip: {get_input: neutron_public_interface_ip}
                 ntp::servers: {get_input: ntp_servers}

puppet/manifests/overcloud_controller.pp

@@ -626,8 +626,15 @@ if hiera('step') >= 3 {
   }
   $neutron_options   = {'profile_support' => $_profile_support }
 
+  $memcached_ipv6 = hiera('memcached_ipv6', false)
+  if $memcached_ipv6 {
+    $horizon_memcached_servers = hiera('memcache_node_ips_v6', '[::1]')
+  } else {
+    $horizon_memcached_servers = hiera('memcache_node_ips', '127.0.0.1')
+  }
+
   class { '::horizon':
-    cache_server_ip => hiera('memcache_node_ips', '127.0.0.1'),
+    cache_server_ip => $horizon_memcached_servers,
     neutron_options => $neutron_options,
   }
 

puppet/manifests/overcloud_controller_pacemaker.pp

@@ -1121,8 +1121,16 @@ if hiera('step') >= 3 {
     $_profile_support = 'None'
   }
   $neutron_options   = {'profile_support' => $_profile_support }
+
+  $memcached_ipv6 = hiera('memcached_ipv6', false)
+  if $memcached_ipv6 {
+    $horizon_memcached_servers = hiera('memcache_node_ips_v6', '[::1]')
+  } else {
+    $horizon_memcached_servers = hiera('memcache_node_ips', '127.0.0.1')
+  }
+
   class { '::horizon':
-    cache_server_ip => hiera('memcache_node_ips', '127.0.0.1'),
+    cache_server_ip => $horizon_memcached_servers,
     neutron_options => $neutron_options,
   }