aboutsummaryrefslogtreecommitdiffstats
path: root/manifests/profile/pacemaker/database/mysql.pp
blob: 476a1e5107603c774cac0d8a5f34e662319e0ff1 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
# 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
#
# [*bootstrap_node*]
#   (Optional) The hostname of the node responsible for bootstrapping tasks
#   Defaults to hiera('mysql_short_bootstrap_node_name')
#
# [*bind_address*]
#   (Optional) The address that the local mysql instance should bind to.
#   Defaults to $::hostname
#
# [*gmcast_listen_addr*]
#   (Optional) This variable defines the address on which the node listens to
#   connections from other nodes in the cluster.
#   Defaults to hiera('mysql_bind_host')
#
# [*step*]
#   (Optional) The current step in deployment. See tripleo-heat-templates
#   for more details.
#   Defaults to hiera('step')
#
# [*pcs_tries*]
#   (Optional) The number of times pcs commands should be retried.
#   Defaults to hiera('pcs_tries', 20)
#
class tripleo::profile::pacemaker::database::mysql (
  $bootstrap_node     = hiera('mysql_short_bootstrap_node_name'),
  $bind_address       = $::hostname,
  $gmcast_listen_addr = hiera('mysql_bind_host'),
  $step               = hiera('step'),
  $pcs_tries          = hiera('pcs_tries', 20),
) {
  if $::hostname == downcase($bootstrap_node) {
    $pacemaker_master = true
  } else {
    $pacemaker_master = false
  }

  # use only mysql_node_names when we land a patch in t-h-t that
  # switches to autogenerating these values from composable services
  # The galera node names need to match the pacemaker node names... so if we
  # want to use FQDNs for this, the cluster will not finish bootstrapping,
  # since all the nodes will be marked as slaves. For now, we'll stick to the
  # short name which is already registered in pacemaker until we get around
  # this issue.
  $galera_node_names_lookup = hiera('mysql_short_node_names', hiera('mysql_node_names', $::hostname))
  if is_array($galera_node_names_lookup) {
    $galera_nodes = downcase(join($galera_node_names_lookup, ','))
  } else {
    $galera_nodes = downcase($galera_node_names_lookup)
  }
  $galera_nodes_count = count(split($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',
      'innodb_file_per_table'         => 'ON',
      'query_cache_size'              => '0',
      'query_cache_type'              => '0',
      'bind-address'                  => $bind_address,
      'max_connections'               => hiera('mysql_max_connections'),
      'open_files_limit'              => '-1',
      'wsrep_on'                      => 'ON',
      'wsrep_provider'                => '/usr/lib64/galera/libgalera_smm.so',
      'wsrep_cluster_name'            => 'galera_cluster',
      'wsrep_cluster_address'         => "gcomm://${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://${gmcast_listen_addr}:4567;",
    }
  }

  # since we are configuring rsync for wsrep_sst_method, we ought to make sure
  # it's installed. We only includ this at step 2 since puppet-rsync may be
  # included later and also adds the package resource.
  if $step == 2 {
      if ! defined(Package['rsync']) {
          package {'rsync':}
      }
  }

  # remove_default_accounts parameter will execute some mysql commands
  # to remove the default accounts created by MySQL package.
  # We need MySQL running to run the commands successfully, so better to
  # wait step 2 before trying to run the commands.
  if $step >= 2 and $pacemaker_master {
    $remove_default_accounts = true
  } else {
    $remove_default_accounts = false
  }

  class { '::tripleo::profile::base::database::mysql':
    bootstrap_node          => $bootstrap_node,
    manage_resources        => false,
    remove_default_accounts => $remove_default_accounts,
    mysql_server_options    => $mysqld_options,
  }

  if $step >= 1 and $pacemaker_master and hiera('stack_action') == 'UPDATE' {
    tripleo::pacemaker::resource_restart_flag { 'galera-master':
      subscribe => File['mysql-config-file'],
    } ~> Exec<| title == 'galera-ready' |>
  }

  if $step >= 2 {
    pacemaker::property { 'galera-role-node-property':
      property => 'galera-role',
      value    => true,
      tries    => $pcs_tries,
      node     => $::hostname,
    }
    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}'",
        tries           => $pcs_tries,
        location_rule   => {
          resource_discovery => 'exclusive',
          score              => 0,
          expression         => ['galera-role eq true'],
        },
        require         => [Class['::mysql::server'],
                            Pacemaker::Property['galera-role-node-property']],
        notify          => Exec['galera-ready'],
      }
      exec { 'galera-ready' :
        command     => '/usr/bin/clustercheck >/dev/null',
        timeout     => 30,
        tries       => 180,
        try_sleep   => 10,
        environment => ['AVAILABLE_WHEN_READONLY=0'],
        refreshonly => true,
        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',
      }

      # We create databases and users for services at step 2 as well. This ensures
      # Galara is up before those get created
      Exec['galera-ready'] -> Mysql_database<||>
      Exec['galera-ready'] -> Mysql_user<||>

    }
    # 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 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' :
      bind           => hiera('mysql_bind_host'),
      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 $step >= 4 or ( $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 $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')
    $galera_set_pwd = "/bin/touch /root/.my.cnf && \
                      /bin/echo \"UPDATE mysql.user SET Password = PASSWORD('${mysql_root_password}') WHERE user = 'root'; \
                      flush privileges;\" | \
                      /bin/mysql --defaults-extra-file=/root/.my.cnf -u root"
    exec { 'galera-set-root-password':
      command => $galera_set_pwd,
    }
    file { '/root/.my.cnf' :
      ensure  => file,
      mode    => '0600',
      owner   => 'root',
      group   => 'root',
      content => "[client]
  user=root
  password=\"${mysql_root_password}\"

  [mysql]
  user=root
  password=\"${mysql_root_password}\"",
      require => Exec['galera-set-root-password'],
    }
  }

}