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# File 'manifests/init.pp', line 284
class galera (
# parameters that need to be evaluated early
Enum['codership', 'mariadb', 'percona'] $vendor_type,
String $vendor_version,
# required parameters
Boolean $arbitrator,
String $arbitrator_options,
String $arbitrator_package_ensure,
Boolean $arbitrator_service_enabled,
String $arbitrator_template,
String $bind_address,
String $cluster_name,
Boolean $configure_firewall,
Boolean $configure_repo,
Boolean $create_root_my_cnf,
Boolean $create_status_user,
String $deb_sysmaint_password,
Hash $default_options,
Boolean $epel_needed,
String $galera_master,
String $local_ip,
Boolean $manage_additional_packages,
Integer $mysql_port,
Boolean $mysql_restart,
Hash $override_options,
String $package_ensure,
Boolean $purge_conf_dir,
String $root_password,
String $rundir,
Boolean $service_enabled,
String $status_allow,
Integer $status_available_when_donor,
Integer $status_available_when_readonly,
Boolean $status_check,
Enum['systemd', 'xinetd'] $status_check_type,
Stdlib::Absolutepath $status_script,
String $status_host,
String $status_log_on_success_operator,
String $status_password,
Integer $status_port,
String $status_system_group,
String $status_system_user,
Hash $status_system_user_config,
String $status_systemd_service_name,
String $status_user,
String $status_xinetd_service_name,
Boolean $validate_connection,
Integer $wsrep_group_comm_port,
Integer $wsrep_inc_state_transfer_port,
String $wsrep_sst_auth,
Enum['mariabackup', 'mysqldump', 'rsync', 'skip', 'xtrabackup', 'xtrabackup-v2'] $wsrep_sst_method,
Integer $wsrep_state_transfer_port,
# optional parameters
# (some of them are actually required, see notes)
Optional[Array] $additional_packages = undef,
Optional[String] $arbitrator_config_file = undef,
Optional[String] $arbitrator_log_file = undef,
Optional[String] $arbitrator_package_name = undef,
Optional[String] $arbitrator_service_name = undef,
Optional[String] $bootstrap_command = undef,
Optional[String] $client_package_name = undef,
Optional[Boolean] $create_root_user = undef,
Optional[String] $galera_package_ensure = undef,
Optional[String] $galera_package_name = undef,
Optional[Array] $galera_servers = undef,
Optional[String] $libgalera_location = undef,
Optional[String] $mysql_package_name = undef,
Optional[String] $mysql_service_name = undef,
Optional[Array] $override_repos = undef,
Optional[String] $status_cps = undef,
Optional[String] $status_flags = undef,
Optional[String] $status_instances = undef,
Optional[String] $status_log_on_failure = undef,
Optional[String] $status_log_on_failure_operator = undef,
Optional[String] $status_log_on_success = undef,
Optional[String] $status_log_type = undef,
Optional[String] $status_service_type = undef,
) {
# Adjust $vendor_version for use with lookup()
# The '_real' variable is kept for compatibility reasons, it may be
# used in inline epp templates.
$vendor_version_real = $vendor_version
$vendor_version_internal = regsubst($vendor_version_real, '\.', '', 'G')
# Percona supports 'xtrabackup-v2', but this value cannot be used in our automatic
# lookups, so we have to use a temporary value.
$wsrep_sst_method_internal = regsubst($wsrep_sst_method, '-', '_', 'G')
# Lookup additional packages from all possible sources:
# galera::sst::SSTMETHOD::VENDOR::VERSION::additional_packages
# galera::sst::SSTMETHOD::additional_packages
# galera::VENDOR::VERSION::additional_packages
# galera::VENDOR::additional_packages
# A user-specified value takes precedence over automatic lookup results.
if !$additional_packages {
# Lookup packages for the selected vendor.
$_packages_vendor = lookup("${module_name}::${vendor_type}::${vendor_version_internal}::additional_packages", { default_value => undef }) ? {
undef => lookup("${module_name}::${vendor_type}::additional_packages", { default_value => [] }),
default => lookup("${module_name}::${vendor_type}::${vendor_version_internal}::additional_packages", { default_value => [] }),
}
# Lookup packages for the selected SST method.
if !$arbitrator {
$_packages_sst = lookup("${module_name}::sst::${wsrep_sst_method_internal}::${vendor_type}::${vendor_version_internal}::additional_packages", { default_value => undef }) ? {
undef => lookup("${module_name}::sst::${wsrep_sst_method_internal}::additional_packages", { default_value => [] }),
default => lookup("${module_name}::sst::${wsrep_sst_method_internal}::${vendor_type}::${vendor_version_internal}::additional_packages", { default_value => [] })
}
} else { $_packages_sst = [] }
# Merge packages from both sources and make them unique.
$additional_packages_real = ($_packages_sst + $_packages_vendor).unique
} else { $additional_packages_real = $additional_packages }
# The following compatibility layer (part 2) is only required for parameters
# that may vary depending on the values of $vendor_version and $vendor_type.
$params = {
arbitrator_config_file => $arbitrator_config_file,
arbitrator_package_name => $arbitrator_package_name,
arbitrator_service_name => $arbitrator_service_name,
bootstrap_command => $bootstrap_command,
client_package_name => $client_package_name,
galera_package_ensure => $galera_package_ensure,
galera_package_name => $galera_package_name,
libgalera_location => $libgalera_location,
mysql_package_name => $mysql_package_name,
mysql_service_name => $mysql_service_name,
}.reduce({}) |$memo, $x| {
# If a value was specified as class parameter, then use it. Otherwise use
# lookup() to find a value in Hiera (or to fallback to default values from
# module data).
if !$x[1] {
$_v = lookup("${module_name}::${vendor_type}::${vendor_version_internal}::${$x[0]}", { default_value => undef }) ? {
undef => lookup("${module_name}::${vendor_type}::${$x[0]}"),
default => lookup("${module_name}::${vendor_type}::${vendor_version_internal}::${$x[0]}"),
}
} else {
$_v = $x[1]
}
$memo + { $x[0] => $_v }
}
# Lookup *optional* parameters that may vary depending on the values of
# $vendor_version and $vendor_type. These parameters will later be passed
# to the mysql::server class.
$optional_params = {
config_file => undef,
includedir => undef,
}.reduce({}) |$memo, $x| {
$_v = lookup("${module_name}::${vendor_type}::${vendor_version_internal}::${$x[0]}", { default_value => undef }) ? {
undef => lookup("${module_name}::${vendor_type}::${$x[0]}", { default_value => undef }),
default => lookup("${module_name}::${vendor_type}::${vendor_version_internal}::${$x[0]}"),
}
$memo + { $x[0] => $_v }
}
# Add the wsrep_cluster_address option to the server configuration.
# It requires some preprocessing...
$_nodes_tmp = $galera_servers.map |$node| { "${node}:${wsrep_group_comm_port}" }
$node_list = join($_nodes_tmp, ',')
$_wsrep_cluster_address = {
'mysqld' => {
'wsrep_cluster_address' => "gcomm://${node_list}/",
},
}
# Lookup vendor specific options for MySQL/MariaDB.
$_defaults_vendor = lookup("${module_name}::${vendor_type}::default_options", { default_value => {} })
$_defaults_vendor_version = lookup("${module_name}::${vendor_type}::${vendor_version_internal}::default_options", { default_value => {} })
# Merge results, the version-specific values take precedence.
$_default_pre = deep_merge($_defaults_vendor, $_defaults_vendor_version)
# Now merge the vendor specific options with the global default values.
$_default_tmp = deep_merge($default_options, $_default_pre)
# XXX: The following is sort-of a compatibility layer. It passes all options
# to the inline_epp() function. This way it is possible to use the values of
# module parameters in MySQL/MariaDB options by specifying them in epp syntax.
$wsrep_sst_auth_real = inline_epp($wsrep_sst_auth)
$_default_options = $_default_tmp.reduce({}) |$memo, $x| {
# A nested hash contains the configuration options.
if ($x[1] =~ Hash) {
$_values = $x[1].reduce({}) |$m,$y| {
# epp expects a string, so skip all other types.
if ($y[1] =~ String) {
$_v = inline_epp($y[1])
} else {
$_v = $y[1]
}
$m + { $y[0] => $_v }
}
} else {
$_values = $x[1]
}
$memo + { $x[0] => $_values }
}
$_override_options = $override_options.reduce({}) |$memo, $x| {
# A nested hash contains the configuration options.
if ($x[1] =~ Hash) {
$_values = $x[1].reduce({}) |$m,$y| {
# epp expects a string, so skip all other types.
if ($y[1] =~ String) {
$_v = inline_epp($y[1])
} else {
$_v = $y[1]
}
$m + { $y[0] => $_v }
}
} else {
$_values = $x[1]
}
$memo + { $x[0] => $_values }
}
# Finally merge options from all 3 sources.
$options = $_default_options.deep_merge($_wsrep_cluster_address.deep_merge($override_options))
# Manage MySQL/MariaDB root user.
if ($create_root_user =~ Undef) {
# Automatically determine if we should manage the root user.
if ($facts['networking']['fqdn'] == $galera_master) {
# Manage root user only on the galera master.
$create_root_user_real = true
} else {
# Skip manage root user on nodes that are not the galera master since
# they should get a database with the root user already configured when
# they sync from the master.
$create_root_user_real = false
}
} else {
# Use user-specified or default value.
$create_root_user_real = $create_root_user
}
if $configure_repo {
# Ensure that repos are setup before trying to install packages.
$_packages_require = [Class['galera::repo']]
include galera::repo
unless $galera::arbitrator {
if ($galera::params['galera_package_name']) {
Class['galera::repo'] -> Package[$galera::params['galera_package_name']]
}
Class['galera::repo'] -> Class['mysql::server']
}
} else {
$_packages_require = []
}
if $configure_firewall {
include galera::firewall
}
# Include workarounds for Debian-based systems
if ($facts['os']['family'] == 'Debian') {
include galera::debian
}
# Include workarounds for RedHat-based systems
if ($facts['os']['family'] == 'RedHat') {
include galera::redhat
}
# Evaluate dependencies before performing package installation
if $arbitrator {
$_packages_before = [Class['galera::arbitrator']]
} else {
if ($facts['networking']['fqdn'] == $galera_master) {
$_packages_before = [
Class['mysql::server::install'],
Exec['bootstrap_galera_cluster']
]
} else {
$_packages_before = [
Class['mysql::server::install']
]
}
}
# Install additional packages
if ($manage_additional_packages and $additional_packages_real) {
stdlib::ensure_packages($additional_packages_real,
{
ensure => $package_ensure,
before => $_packages_before,
require => $_packages_require,
})
}
# Configure a MySQL/MariaDB cluster node or an Arbitrator?
if $arbitrator {
class { 'galera::arbitrator':
config_file => $params['arbitrator_config_file'],
package_name => $params['arbitrator_package_name'],
service_name => $params['arbitrator_service_name'],
}
} else {
if $status_check {
# This is expected to be executed when mysql::server has finished
# and the cluster was successfully bootstrapped. However it should
# be run prior to galera::validate because it sets up the users that
# are needed during validation.
include galera::status
$_root_my_cnf_before = [
Class['mysql::server::root_password'],
Class['galera::status']
]
} else {
$_root_my_cnf_before = [
Class['mysql::server::root_password']
]
}
if $validate_connection {
include galera::validate
# Ensure that MySQL server setup is complete, otherwise the service
# might not be running and validation would fail.
Class['mysql::server'] -> Class['galera::validate']
}
if ($create_root_my_cnf == true) {
# Check if we can already login with the given password
$my_cnf = "[client]\r\nuser=root\r\nhost=localhost\r\npassword='${root_password}'\r\n"
exec { 'create .my.cnf for user root':
path => '/bin:/usr/bin:/usr/local/bin:/sbin:/usr/sbin:/usr/local/sbin',
command => "echo \"${my_cnf}\" > ${facts['root_home']}/.my.cnf",
onlyif => [
"mysql --user=root --password=${root_password} -e 'select count(1);'",
"test `cat ${facts['root_home']}/.my.cnf | grep -c \"password='${root_password}'\"` -eq 0",
],
require => Service[$params['mysql_service_name']],
before => $_root_my_cnf_before,
}
}
# Setup MySQL server with custom parameters.
class { 'mysql::server':
create_root_my_cnf => $create_root_my_cnf,
create_root_user => $create_root_user_real,
override_options => $options,
package_ensure => $package_ensure,
package_name => $params['mysql_package_name'],
purge_conf_dir => $purge_conf_dir,
restart => $mysql_restart,
root_password => $root_password,
service_enabled => $service_enabled,
service_name => $params['mysql_service_name'],
* => $optional_params,
}
file { $rundir:
ensure => directory,
owner => 'mysql',
group => 'mysql',
require => Class['mysql::server::install'],
before => Class['mysql::server::installdb'],
}
# Overrule puppetlabs/mysql default value
Package<| title == 'mysql_client' |> {
name => $params['client_package_name']
}
# Install galera provider
package { [$galera::params['galera_package_name']]:
ensure => $params['galera_package_ensure'],
before => $_packages_before,
}
if ($facts['networking']['fqdn'] == $galera_master) {
# If there are no other servers up and we are the master, the cluster
# needs to be bootstrapped. This happens before the service is managed
$server_list = join($galera_servers, ' ')
exec { 'bootstrap_galera_cluster':
command => $params['bootstrap_command'],
unless => "nmap -Pn -p ${wsrep_group_comm_port} ${server_list} | grep -q '${wsrep_group_comm_port}/tcp open'",
require => Class['mysql::server::installdb'],
before => Service[$params['mysql_service_name']],
provider => shell,
path => '/usr/bin:/bin:/usr/local/bin:/usr/sbin:/sbin:/usr/local/sbin',
}
}
}
}
|