Add MySQL profiles

Add MySQL profiles, for non-ha and ha scenarios.

Change-Id: I7ddae28a6affd55c5bffc15d72226a18c708850e
Closes-Bug: #1601853

1 files changed, 184 insertions, 0 deletions

diff --git a/manifests/profile/pacemaker/database/mysql.pp b/manifests/profile/pacemaker/database/mysql.pp
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+# 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::database::mysql
+#
+# MySQL with Pacemaker profile for tripleo
+#
+# === Parameters
+#
+# [*step*]
+#   (Optional) The current step in deployment. See tripleo-heat-templates
+#   for more details.
+#   Defaults to hiera('step')
+#
+class tripleo::profile::pacemaker::database::mysql (
+  $step = hiera('step'),
+) {
+
+  if $::hostname == downcase(hiera('bootstrap_nodeid')) {
+    $pacemaker_master = true
+  } else {
+    $pacemaker_master = false
+  }
+  $mysql_bind_host = hiera('mysql_bind_host')
+  $galera_nodes = downcase(hiera('galera_node_names', $::hostname))
+  $galera_nodes_count = count(split($galera_nodes, ','))
+  $mysqld_options = {
+    'mysqld' => {
+      'skip-name-resolve'             => '1',
+      'binlog_format'                 => 'ROW',
+      'default-storage-engine'        => 'innodb',
+      'innodb_autoinc_lock_mode'      => '2',
+      'innodb_locks_unsafe_for_binlog'=> '1',
+      'query_cache_size'              => '0',
+      'query_cache_type'              => '0',
+      'bind-address'                  => $::hostname,
+      'max_connections'               => hiera('mysql_max_connections'),
+      'open_files_limit'              => '-1',
+      'wsrep_on'                      => 'ON',
+      'wsrep_provider'                => '/usr/lib64/galera/libgalera_smm.so',
+      'wsrep_cluster_name'            => 'galera_cluster',
+      'wsrep_cluster_address'         => "gcomm://${galera_nodes}",
+      'wsrep_slave_threads'           => '1',
+      'wsrep_certify_nonPK'           => '1',
+      'wsrep_max_ws_rows'             => '131072',
+      'wsrep_max_ws_size'             => '1073741824',
+      'wsrep_debug'                   => '0',
+      'wsrep_convert_LOCK_to_trx'     => '0',
+      'wsrep_retry_autocommit'        => '1',
+      'wsrep_auto_increment_control'  => '1',
+      'wsrep_drupal_282555_workaround'=> '0',
+      'wsrep_causal_reads'            => '0',
+      'wsrep_sst_method'              => 'rsync',
+      'wsrep_provider_options'        => "gmcast.listen_addr=tcp://[${mysql_bind_host}]:4567;",
+    }
+  }
+
+  class { '::tripleo::profile::base::database::mysql':
+    manage_resources        => false,
+    remove_default_accounts => $pacemaker_master,
+    mysql_server_options    => $mysqld_options,
+  }
+
+  if hiera('step') >= 2 and $pacemaker_master {
+    if $pacemaker_master {
+      pacemaker::resource::ocf { 'galera' :
+        ocf_agent_name  => 'heartbeat:galera',
+        op_params       => 'promote timeout=300s on-fail=block',
+        master_params   => '',
+        meta_params     => "master-max=${galera_nodes_count} ordered=true",
+        resource_params => "additional_parameters='--open-files-limit=16384' enable_creation=true wsrep_cluster_address='gcomm://${galera_nodes}'",
+        require         => Class['::mysql::server'],
+        before          => Exec['galera-ready'],
+      }
+      exec { 'galera-ready' :
+        command     => '/usr/bin/clustercheck >/dev/null',
+        timeout     => 30,
+        tries       => 180,
+        try_sleep   => 10,
+        environment => ['AVAILABLE_WHEN_READONLY=0'],
+        require     => Exec['create-root-sysconfig-clustercheck'],
+      }
+      # We add a clustercheck db user and we will switch /etc/sysconfig/clustercheck
+      # to it in a later step. We do this only on one node as it will replicate on
+      # the other members. We also make sure that the permissions are the minimum necessary
+      mysql_user { 'clustercheck@localhost':
+        ensure        => 'present',
+        password_hash => mysql_password(hiera('mysql_clustercheck_password')),
+        require       => Exec['galera-ready'],
+      }
+      mysql_grant { 'clustercheck@localhost/*.*':
+        ensure     => 'present',
+        options    => ['GRANT'],
+        privileges => ['PROCESS'],
+        table      => '*.*',
+        user       => 'clustercheck@localhost',
+      }
+    }
+    # This step is to create a sysconfig clustercheck file with the root user and empty password
+    # on the first install only (because later on the clustercheck db user will be used)
+    # We are using exec and not file in order to not have duplicate definition errors in puppet
+    # when we later set the the file to contain the clustercheck data
+    exec { 'create-root-sysconfig-clustercheck':
+      command => "/bin/echo 'MYSQL_USERNAME=root\nMYSQL_PASSWORD=\'\'\nMYSQL_HOST=localhost\n' > /etc/sysconfig/clustercheck",
+      unless  => '/bin/test -e /etc/sysconfig/clustercheck && grep -q clustercheck /etc/sysconfig/clustercheck',
+    }
+    xinetd::service { 'galera-monitor' :
+      port           => '9200',
+      server         => '/usr/bin/clustercheck',
+      per_source     => 'UNLIMITED',
+      log_on_success => '',
+      log_on_failure => 'HOST',
+      flags          => 'REUSE',
+      service_type   => 'UNLISTED',
+      user           => 'root',
+      group          => 'root',
+      require        => Exec['create-root-sysconfig-clustercheck'],
+    }
+  }
+
+  if hiera('step') >= 4 or ( hiera('step') >= 3 and $pacemaker_master ) {
+    # At this stage we are guaranteed that the clustercheck db user exists
+    # so we switch the resource agent to use it.
+    $mysql_clustercheck_password = hiera('mysql_clustercheck_password')
+    file { '/etc/sysconfig/clustercheck' :
+      ensure  => file,
+      mode    => '0600',
+      owner   => 'root',
+      group   => 'root',
+      content => "MYSQL_USERNAME=clustercheck\n
+MYSQL_PASSWORD='${mysql_clustercheck_password}'\n
+MYSQL_HOST=localhost\n",
+    }
+  }
+
+  if hiera('step') >= 5 {
+    # We now make sure that the root db password is set to a random one
+    # At first installation /root/.my.cnf will be empty and we connect without a root
+    # password. On second runs or updates /root/.my.cnf will already be populated
+    # with proper credentials. This step happens on every node because this sql
+    # statement does not automatically replicate across nodes.
+    $mysql_root_password = hiera('mysql::server::root_password')
+    exec { 'galera-set-root-password':
+      command => "/bin/touch /root/.my.cnf && /bin/echo \"UPDATE mysql.user SET Password = PASSWORD('${mysql_root_password}') WHERE user = 'root'; flush privileges;\" | /bin/mysql --defaults-extra-file=/root/.my.cnf -u root",
+    }
+    file { '/root/.my.cnf' :
+      ensure  => file,
+      mode    => '0600',
+      owner   => 'root',
+      group   => 'root',
+      content => "[client]
+  user=root
+  password=\"${mysql_root_password}\"
+
+  [mysql]
+  user=root
+  password=\"${mysql_root_password}\"",
+      require => Exec['galera-set-root-password'],
+    }
+    if $pacemaker_master {
+      pacemaker::constraint::base { 'galera-then-openstack-core-constraint':
+        constraint_type => 'order',
+        first_resource  => 'galera-master',
+        second_resource => 'openstack-core-clone',
+        first_action    => 'promote',
+        second_action   => 'start',
+        require         => [Pacemaker::Resource::Ocf['galera'],
+                            Pacemaker::Resource::Ocf['openstack-core']],
+      }
+    }
+  }
+
+}