Enable TLS for the HAProxy stats interface

This creates a new class for the stats interface and furtherly
configures it to also use the certificates that are provided by
certmonger (via the internal_certificates_specs variable).

Note that the already existing haproxy_stats_certificate still works and
will take precedence if it's set.

bp tls-via-certmonger

Change-Id: Iea65d91648ab13dbe6ec20241a1a7c95ce856e3e

4 files changed, 199 insertions, 28 deletions

diff --git a/manifests/haproxy.pp b/manifests/haproxy.pp
index 5a59c10..497c9da 100644
--- a/manifests/haproxy.pp
+++ b/manifests/haproxy.pp
@@ -766,12 +766,6 @@ class tripleo::haproxy (
     $controller_hosts_names_real = downcase(any2array(split($controller_hosts_names, ',')))
   }
 
-  # TODO(bnemec): When we have support for SSL on private and admin endpoints,
-  # have the haproxy stats endpoint use that certificate by default.
-  if $haproxy_stats_certificate {
-    $haproxy_stats_bind_certificate = $haproxy_stats_certificate
-  }
-
   $horizon_vip = hiera('horizon_vip', $controller_virtual_ip)
   if $service_certificate {
     # NOTE(jaosorior): If the horizon_vip and the public_virtual_ip are the
@@ -809,16 +803,6 @@ class tripleo::haproxy (
     }
   }
 
-  if $haproxy_stats_bind_certificate {
-    $haproxy_stats_bind_opts = {
-      "${controller_virtual_ip}:1993" => union($haproxy_listen_bind_param, ['ssl', 'crt', $haproxy_stats_bind_certificate]),
-    }
-  } else {
-    $haproxy_stats_bind_opts = {
-      "${controller_virtual_ip}:1993" => $haproxy_listen_bind_param,
-    }
-  }
-
   $mysql_vip = hiera('mysql_vip', $controller_virtual_ip)
   $mysql_bind_opts = {
     "${mysql_vip}:3306" => $haproxy_listen_bind_param,
@@ -884,19 +868,20 @@ class tripleo::haproxy (
   }
 
   if $haproxy_stats {
-    $stats_base = ['enable', 'uri /']
-    if $haproxy_stats_password {
-      $stats_config = union($stats_base, ["auth ${haproxy_stats_user}:${haproxy_stats_password}"])
+    if $haproxy_stats_certificate {
+      $haproxy_stats_certificate_real = $haproxy_stats_certificate
+    } elsif $use_internal_certificates {
+      # NOTE(jaosorior): Right now it's hardcoded to use the ctlplane network
+      $haproxy_stats_certificate_real = $internal_certificates_specs["haproxy-ctlplane"]['service_pem']
     } else {
-      $stats_config = $stats_base
-    }
-    haproxy::listen { 'haproxy.stats':
-      bind             => $haproxy_stats_bind_opts,
-      mode             => 'http',
-      options          => {
-        'stats' => $stats_config,
-      },
-      collect_exported => false,
+      $haproxy_stats_certificate_real = undef
+    }
+    class { '::tripleo::haproxy::stats':
+      haproxy_listen_bind_param => $haproxy_listen_bind_param,
+      ip                        => $controller_virtual_ip,
+      password                  => $haproxy_stats_password,
+      certificate               => $haproxy_stats_certificate_real,
+      user                      => $haproxy_stats_user,
     }
   }
 
diff --git a/manifests/haproxy/stats.pp b/manifests/haproxy/stats.pp
new file mode 100644
index 0000000..f185c29
--- /dev/null
+++ b/manifests/haproxy/stats.pp
@@ -0,0 +1,74 @@
+# Copyright 2014 Red Hat, Inc.
+# All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License"); you may
+# not use this file except in compliance with the License. You may obtain
+# a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+
+# == Class: tripleo::haproxy::stats
+#
+# Configure the HAProxy stats interface
+#
+# [*haproxy_listen_bind_param*]
+#  A list of params to be added to the HAProxy listener bind directive.
+#
+# [*ip*]
+#  IP Address on which the stats interface is listening on. This right now
+#  assumes that it's in the ctlplane network.
+#
+# [*password*]
+#  Password for haproxy stats authentication.  When set, authentication is
+#  enabled on the haproxy stats endpoint.
+#  A string.
+#  Defaults to undef
+#
+# [*certificate*]
+#  Filename of an HAProxy-compatible certificate and key file
+#  When set, enables SSL on the haproxy stats endpoint using the specified file.
+#  Defaults to undef
+#
+# [*user*]
+#  Username for haproxy stats authentication.
+#  A string.
+#  Defaults to 'admin'
+#
+class tripleo::haproxy::stats (
+  $haproxy_listen_bind_param,
+  $ip,
+  $password    = undef,
+  $certificate = undef,
+  $user        = 'admin'
+) {
+  if $certificate {
+    $haproxy_stats_bind_opts = {
+      "${ip}:1993" => union($haproxy_listen_bind_param, ['ssl', 'crt', $certificate]),
+    }
+  } else {
+    $haproxy_stats_bind_opts = {
+      "${ip}:1993" => $haproxy_listen_bind_param,
+    }
+  }
+
+  $stats_base = ['enable', 'uri /']
+  if $password {
+    $stats_config = union($stats_base, ["auth ${user}:${password}"])
+  } else {
+    $stats_config = $stats_base
+  }
+  haproxy::listen { 'haproxy.stats':
+    bind             => $haproxy_stats_bind_opts,
+    mode             => 'http',
+    options          => {
+      'stats' => $stats_config,
+    },
+    collect_exported => false,
+  }
+}
diff --git a/releasenotes/notes/TLS-for-haproxy-stats-3ce3b7780f0ef5b7.yaml b/releasenotes/notes/TLS-for-haproxy-stats-3ce3b7780f0ef5b7.yaml
new file mode 100644
index 0000000..2f981a1
--- /dev/null
+++ b/releasenotes/notes/TLS-for-haproxy-stats-3ce3b7780f0ef5b7.yaml
@@ -0,0 +1,8 @@
+---
+features:
+  - When TLS everywhere is enabled, the HAProxy stats interface will also use
+    TLS. This requires the user to access the interface through the ctlplane
+    FQDN (which is configured by the CloudNameCtlplane parameter in
+    tripleo-heat-templates). Note that one can still use the
+    haproxy_stats_certificate parameter from the haproxy class, and that one
+    will take precedence if set.
diff --git a/spec/classes/tripleo_haproxy_stats_spec.rb b/spec/classes/tripleo_haproxy_stats_spec.rb
new file mode 100644
index 0000000..bad5bf1
--- /dev/null
+++ b/spec/classes/tripleo_haproxy_stats_spec.rb
@@ -0,0 +1,104 @@
+#
+# Copyright (C) 2016 Red Hat, Inc.
+#
+# Licensed under the Apache License, Version 2.0 (the "License"); you may
+# not use this file except in compliance with the License. You may obtain
+# a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+#
+
+require 'spec_helper'
+
+describe 'tripleo::haproxy::stats' do
+
+  shared_examples_for 'tripleo::haproxy::stats' do
+    let :pre_condition do
+      "Haproxy::Listen {
+        config_file => '/etc/haproxy.cfg'
+      }"
+    end
+
+    context 'with only required parameters' do
+      let(:params) do
+        {
+          :ip => '127.0.0.1',
+          :haproxy_listen_bind_param => ['transparent'],
+        }
+      end
+      it 'should configure basic stats frontend' do
+        is_expected.to contain_haproxy__listen('haproxy.stats').with(
+          :bind => {
+            "127.0.0.1:1993" => ['transparent']
+          },
+          :mode => 'http',
+          :options => {
+            'stats' => ['enable', 'uri /']
+          },
+          :collect_exported => false
+        )
+      end
+    end
+
+    context 'with auth parameters' do
+      let(:params) do
+        {
+          :ip                        => '127.0.0.1',
+          :haproxy_listen_bind_param => ['transparent'],
+          :user                      => 'myuser',
+          :password                  => 'superdupersecret',
+        }
+      end
+      it 'should configure stats frontend with auth enabled' do
+        is_expected.to contain_haproxy__listen('haproxy.stats').with(
+          :bind => {
+            "127.0.0.1:1993" => ['transparent']
+          },
+          :mode => 'http',
+          :options => {
+            'stats' => ['enable', 'uri /', 'auth myuser:superdupersecret']
+          },
+          :collect_exported => false
+        )
+      end
+    end
+
+    context 'with certificate parameter' do
+      let(:params) do
+        {
+          :ip                        => '127.0.0.1',
+          :haproxy_listen_bind_param => ['transparent'],
+          :certificate               => '/path/to/cert',
+        }
+      end
+      it 'should configure stats frontend with TLS enabled' do
+        is_expected.to contain_haproxy__listen('haproxy.stats').with(
+          :bind => {
+            "127.0.0.1:1993" => ['transparent', 'ssl', 'crt', '/path/to/cert']
+          },
+          :mode => 'http',
+          :options => {
+            'stats' => ['enable', 'uri /']
+          },
+          :collect_exported => false
+        )
+      end
+    end
+  end
+
+  on_supported_os.each do |os, facts|
+    context "on #{os}" do
+      let(:facts) do
+        facts.merge({})
+      end
+
+      it_behaves_like 'tripleo::haproxy::stats'
+    end
+  end
+end