Enable TLS in the internal network for Nova API

This optionally enables TLS for Nova API in the internal network.
If internal TLS is enabled, each node that is serving the Nova API
service will use certmonger to request its certificate.

Note that this doesn't enable internal TLS for the nova metadata
service since it doesn't run over httpd. This will be handled in
a later commit.

bp tls-via-certmonger

Change-Id: I88380a1ed8fd597a1a80488cbc6ce357f133bd70

2 files changed, 55 insertions, 3 deletions

diff --git a/manifests/haproxy.pp b/manifests/haproxy.pp
index 5f563ba..0e47663 100644
--- a/manifests/haproxy.pp
+++ b/manifests/haproxy.pp
@@ -867,6 +867,7 @@ class tripleo::haproxy (
       },
       public_ssl_port   => $ports[nova_api_ssl_port],
       service_network   => $nova_osapi_network,
+      member_options    => union($haproxy_member_options, $internal_tls_member_options),
     }
   }
 
diff --git a/manifests/profile/base/nova/api.pp b/manifests/profile/base/nova/api.pp
index ca2f7dd..e660990 100644
--- a/manifests/profile/base/nova/api.pp
+++ b/manifests/profile/base/nova/api.pp
@@ -20,14 +20,47 @@
 #   (Optional) The hostname of the node responsible for bootstrapping tasks
 #   Defaults to hiera('bootstrap_nodeid')
 #
+# [*certificates_specs*]
+#   (Optional) The specifications to give to certmonger for the certificate(s)
+#   it will create.
+#   Example with hiera:
+#     apache_certificates_specs:
+#       httpd-internal_api:
+#         hostname: <overcloud controller fqdn>
+#         service_certificate: <service certificate path>
+#         service_key: <service key path>
+#         principal: "haproxy/<overcloud controller fqdn>"
+#   Defaults to hiera('apache_certificate_specs', {}).
+#
+# [*enable_internal_tls*]
+#   (Optional) Whether TLS in the internal network is enabled or not.
+#   Defaults to hiera('enable_internal_tls', false)
+#
+# [*generate_service_certificates*]
+#   (Optional) Whether or not certmonger will generate certificates for
+#   HAProxy. This could be as many as specified by the $certificates_specs
+#   variable.
+#   Note that this doesn't configure the certificates in haproxy, it merely
+#   creates the certificates.
+#   Defaults to hiera('generate_service_certificate', false).
+#
+# [*nova_api_network*]
+#   (Optional) The network name where the nova API endpoint is listening on.
+#   This is set by t-h-t.
+#   Defaults to hiera('nova_api_network', undef)
+#
 # [*step*]
 #   (Optional) The current step in deployment. See tripleo-heat-templates
 #   for more details.
 #   Defaults to hiera('step')
 #
 class tripleo::profile::base::nova::api (
-  $bootstrap_node = hiera('bootstrap_nodeid', undef),
-  $step           = hiera('step'),
+  $bootstrap_node                = hiera('bootstrap_nodeid', undef),
+  $certificates_specs            = hiera('apache_certificates_specs', {}),
+  $enable_internal_tls           = hiera('enable_internal_tls', false),
+  $generate_service_certificates = hiera('generate_service_certificates', false),
+  $nova_api_network              = hiera('nova_api_network', undef),
+  $step                          = hiera('step'),
 ) {
   if $::hostname == downcase($bootstrap_node) {
     $sync_db = true
@@ -37,6 +70,21 @@ class tripleo::profile::base::nova::api (
 
   include ::tripleo::profile::base::nova
 
+  if $enable_internal_tls {
+    if $generate_service_certificates {
+      ensure_resources('tripleo::certmonger::httpd', $certificates_specs)
+    }
+
+    if !$nova_api_network {
+      fail('nova_api_network is not set in the hieradata.')
+    }
+    $tls_certfile = $certificates_specs["httpd-${nova_api_network}"]['service_certificate']
+    $tls_keyfile = $certificates_specs["httpd-${nova_api_network}"]['service_key']
+  } else {
+    $tls_certfile = undef
+    $tls_keyfile = undef
+  }
+
   if $step >= 4 or ($step >= 3 and $sync_db) {
 
     if hiera('nova::use_ipv6', false) {
@@ -53,7 +101,10 @@ class tripleo::profile::base::nova::api (
       sync_db     => $sync_db,
       sync_db_api => $sync_db,
     }
-    include ::nova::wsgi::apache
+    class { '::nova::wsgi::apache':
+      ssl_cert => $tls_certfile,
+      ssl_key  => $tls_keyfile,
+    }
     include ::nova::network::neutron
   }