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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
#
# [*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',
'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;",
}
}
# 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'],
}
}
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']],
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',
}
# 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 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 $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'],
}
}
}
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