Enable TLS in the internal network for gnocchi

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

bp tls-via-certmonger

Change-Id: Ie983933e062ac6a7f0af4d88b32634e6ce17838b

2 files changed, 56 insertions, 4 deletions

diff --git a/manifests/haproxy.pp b/manifests/haproxy.pp
index 4c8859e..fdffe20 100644
--- a/manifests/haproxy.pp
+++ b/manifests/haproxy.pp
@@ -906,6 +906,7 @@ class tripleo::haproxy (
       server_names      => hiera('gnocchi_api_node_names', $controller_hosts_names_real),
       public_ssl_port   => $ports[gnocchi_api_ssl_port],
       service_network   => $gnocchi_network,
+      member_options    => union($haproxy_member_options, $internal_tls_member_options),
     }
   }
 
diff --git a/manifests/profile/base/gnocchi/api.pp b/manifests/profile/base/gnocchi/api.pp
index 9a08551..2fde1fc 100644
--- a/manifests/profile/base/gnocchi/api.pp
+++ b/manifests/profile/base/gnocchi/api.pp
@@ -22,19 +22,52 @@
 #   (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).
+#
 # [*gnocchi_backend*]
 #   (Optional) Gnocchi backend string file, swift or rbd
 #   Defaults to swift
 #
+# [*gnocchi_network*]
+#   (Optional) The network name where the gnocchi endpoint is listening on.
+#   This is set by t-h-t.
+#   Defaults to hiera('gnocchi_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::gnocchi::api (
-  $bootstrap_node  = hiera('bootstrap_nodeid', undef),
-  $gnocchi_backend = downcase(hiera('gnocchi_backend', 'swift')),
-  $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),
+  $gnocchi_backend               = downcase(hiera('gnocchi_backend', 'swift')),
+  $gnocchi_network               = hiera('gnocchi_api_network', undef),
+  $step                          = hiera('step'),
 ) {
   if $::hostname == downcase($bootstrap_node) {
     $sync_db = true
@@ -44,13 +77,31 @@ class tripleo::profile::base::gnocchi::api (
 
   include ::tripleo::profile::base::gnocchi
 
+  if $enable_internal_tls {
+    if $generate_service_certificates {
+      ensure_resources('tripleo::certmonger::httpd', $certificates_specs)
+    }
+
+    if !$gnocchi_network {
+      fail('gnocchi_api_network is not set in the hieradata.')
+    }
+    $tls_certfile = $certificates_specs["httpd-${gnocchi_network}"]['service_certificate']
+    $tls_keyfile = $certificates_specs["httpd-${gnocchi_network}"]['service_key']
+  } else {
+    $tls_certfile = undef
+    $tls_keyfile = undef
+  }
+
   if $step >= 3 and $sync_db {
     include ::gnocchi::db::sync
   }
 
   if $step >= 4 {
     include ::gnocchi::api
-    include ::gnocchi::wsgi::apache
+    class { '::gnocchi::wsgi::apache':
+      ssl_cert => $tls_certfile,
+      ssl_key  => $tls_keyfile,
+    }
 
     class { '::gnocchi::storage':
       coordination_url => join(['redis://:', hiera('gnocchi_redis_password'), '@', normalize_ip_for_uri(hiera('redis_vip')), ':6379/']),