Enable sudo rule creation

We need to enable creation of sudo rule creation for user under which sensubility
is executed to enable operators execution of any command they possibly need
in their health check implementation.

Change-Id: I47c6e4fb3beab14cc5c7f824646e3c2242b140d4

manifests/profile/base/metrics/collectd/sensubility.pp

@@ -91,6 +91,19 @@
 #  (Optional) String. Password part of credentials used to authenticate
 #  to the AMQP 1.0 intermediary.
 #  Defaults to undef
+#
+# [*exec_user*]
+#  (Optional) String. User under which sensubility is executed via collectd-exec.
+#  Defaults to 'collectd'
+#
+# [*exec_group*]
+#  (Optional) String. Group under which sensubility is executed via collectd-exec.
+#  Defaults to 'collectd'
+#
+# [*exec_sudo_rule*]
+#  (Optional) String. Rule which will be saved in /etc/sudoers.d for user specified
+#  by parameter exec_user.
+#  Defaults to undef
 class tripleo::profile::base::metrics::collectd::sensubility (
   $ensure             = 'present',
   $config_path        = '/etc/collectd-sensubility.conf',
@@ -108,7 +121,10 @@ class tripleo::profile::base::metrics::collectd::sensubility (
   $amqp_host          = undef,
   $amqp_port          = undef,
   $amqp_user          = undef,
-  $amqp_password      = undef
+  $amqp_password      = undef,
+  $exec_user          = 'collectd',
+  $exec_group         = 'collectd',
+  $exec_sudo_rule     = undef
 ) {
   include collectd
   include collectd::plugin::exec
@@ -140,8 +156,25 @@ class tripleo::profile::base::metrics::collectd::sensubility (
   }
 
   collectd::plugin::exec::cmd { 'sensubility':
-    user  => 'collectd',
-    group => 'collectd',
+    user  => $exec_user,
+    group => $exec_group,
     exec  => ['collectd-sensubility'],
   }
+
+  if $exec_sudo_rule {
+    $sudoers_path = "/etc/sudoers.d/sensubility_${exec_user}"
+    file { $sudoers_path:
+      ensure  => $ensure,
+      mode    => '0440',
+      content => "${exec_user}  ${exec_sudo_rule}",
+      notify  => Exec["${exec_user}-sudo-syntax-check"]
+    }
+
+    exec { "${exec_user}-sudo-syntax-check":
+      path        => ['/usr/sbin/', '/usr/bin/'],
+      command     => "visudo -c -f '${sudoers_path}' || (rm -f '${sudoers_path}' && exit 1)",
+      refreshonly => true,
+    }
+  }
+
 }

spec/classes/tripleo_profile_base_metrics_collectd_sensubility_spec.rb

@@ -0,0 +1,43 @@
+#
+# Copyright (C) 2020 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::base::metrics::collectd::sensubility' do
+  shared_examples_for 'tripleo::profile::base::metrics::collectd::sensubility' do
+    context 'with defaults and sudo rule defined' do
+      let(:params) do
+        {:exec_sudo_rule => 'ALL=(ALL)  NOPASSWD:ALL'}
+      end
+      it 'has sudoers file for appropriate user with relevant rule' do
+        is_expected.to compile.with_all_deps
+        is_expected.to contain_file('/etc/sudoers.d/sensubility_collectd').with_content('collectd  ALL=(ALL)  NOPASSWD:ALL')
+        is_expected.to contain_exec('collectd-sudo-syntax-check').with(
+          :command => "visudo -c -f '/etc/sudoers.d/sensubility_collectd' || (rm -f '/etc/sudoers.d/sensubility_collectd' && exit 1)",
+        )
+      end
+    end
+  end
+
+  on_supported_os.each do |os, facts|
+    context "on #{os}" do
+      let (:facts) {
+        facts
+      }
+      it_behaves_like 'tripleo::profile::base::metrics::collectd::sensubility'
+    end
+  end
+end

spec/fixtures/hieradata/default.yaml

@@ -174,3 +174,5 @@ neutron::plugins::ovs::opendaylight::odl_password: 'admin'
 swift_proxy_short_bootstrap_node_name: node
 # required for metrics::qdr_user
 ctlplane: '192.168.24.123'
+# required to avoid EPEL repo management when testing collectd::sensubility
+collectd::manage_repo: false