Add Ceph RBD mirror Pacemaker profile

This change adds a profile for the Ceph RBD mirror service, which
should be managed by Pacemaker to make sure there is always a single
instance running.

Change-Id: Ic63dc5cffece38942d305f538f71dd58a5d50789
Partial-Bug: #1652177

manifests/profile/pacemaker/ceph/rbdmirror.pp

@@ -0,0 +1,77 @@
+# Copyright 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.
+#
+# == Class: tripleo::profile::pacemaker::ceph::rbdmirror
+#
+# Ceph RBD mirror Pacemaker profile for tripleo
+#
+# === Parameters
+#
+# [*bootstrap_node*]
+#   (Optional) The hostname of the node responsible for bootstrapping tasks
+#   Defaults to hiera('ceph_rbdmirror_bootstrap_short_node_name')
+#
+# [*client_name*]
+#   (Optional) Name assigned to the RBD mirror client
+#   Defaults to 'rbd-mirror'
+#
+# [*stack_action*]
+#   (Optional) Action executed on the stack. See tripleo-heat-templates
+#   for more details.
+#   Defaults to hiera('stack_action')
+#
+# [*step*]
+#   (Optional) The current step in deployment. See tripleo-heat-templates
+#   for more details.
+#   Defaults to hiera('step')
+#
+class tripleo::profile::pacemaker::ceph::rbdmirror (
+  $bootstrap_node = hiera('ceph_rbdmirror_bootstrap_short_node_name'),
+  $client_name    = 'openstack',
+  $stack_action   = hiera('stack_action'),
+  $step           = hiera('step'),
+) {
+  Service <| tag == 'ceph-rbd-mirror' |> {
+    hasrestart => true,
+    restart    => '/bin/true',
+    start      => '/bin/true',
+    stop       => '/bin/true',
+  }
+
+  if $::hostname == downcase($bootstrap_node) {
+    $pacemaker_master = true
+  } else {
+    $pacemaker_master = false
+  }
+
+  include ::tripleo::profile::base::ceph
+
+  if $step >= 3 {
+    ceph::mirror { $client_name:
+      rbd_mirror_enable => false,
+      rbd_mirror_ensure => 'stopped',
+    } ->
+    pacemaker::resource::service { "ceph-rbd-mirror_${client_name}":
+      # NOTE(gfidente): systemd uses the @ sign but it is an invalid
+      # character in a pcmk resource name, so we need to use it only
+      # for the name of the service
+      service_name => "ceph-rbd-mirror@${client_name}"
+    }
+  }
+
+  if $step >= 3 and $pacemaker_master and $stack_action == 'UPDATE' {
+    Ceph_config<||> ~> Tripleo::Pacemaker::Resource_restart_flag["ceph-rbd-mirror@${client_name}"]
+    tripleo::pacemaker::resource_restart_flag { "ceph-rbd-mirror@${client_name}": }
+  }
+}

spec/classes/tripleo_profile_pacemaker_ceph_rbdmirror_spec.rp

@@ -0,0 +1,64 @@
+#
+# 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::profile::pacemaker::ceph::rbdmirror' do
+  shared_examples_for 'tripleo::profile::pacemaker::ceph::rbdmirror' do
+    let (:pre_condition) do
+      <<-eof
+      class { '::tripleo::profile::base::ceph':
+        step => #{params[:step]}
+      }
+      eof
+    end
+
+    context 'with step less than 3' do
+      let(:params) { { :step => 2 } }
+      it 'should do nothing' do
+        is_expected.to contain_class('tripleo::profile::base::ceph')
+        is_expected.to_not contain_class('ceph::mirror')
+      end
+    end
+
+    context 'with step 3 and client_name' do
+      let(:params) { {
+        :step => 3,
+        :client_name => 'myname',
+      } }
+
+      it 'should include rbdmirror configuration' do
+        is_expected.to contain_class('tripleo::profile::base::ceph')
+        is_expected.to contain_class('ceph::rbdmirror').with(
+          :rbd_mirror_enable => false,
+          :rbd_mirror_ensure => 'stopped',
+        )
+        is_expected.to contain_class('pacemaker::resource::service')
+      end
+    end
+
+  end
+
+  on_supported_os.each do |os, facts|
+    context "on #{os}" do
+      let(:facts) do
+        facts.merge({ :hostname => 'node.example.com' })
+      end
+
+      it_behaves_like 'tripleo::profile::pacemaker::ceph::rbdmirror'
+    end
+  end
+end