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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::rabbitmq
#
# RabbitMQ Pacemaker HA profile for tripleo
#
# === Parameters
#
# [*bootstrap_node*]
# (Optional) The hostname of the node responsible for bootstrapping tasks
# Defaults to hiera('rabbitmq_short_bootstrap_node_name')
#
# [*erlang_cookie*]
# (Optional) Content of erlang cookie.
# Defaults to hiera('rabbitmq::erlang_cookie').
#
# [*user_ha_queues*]
# (Optional) The number of HA queues in to be configured in rabbitmq
# Defaults to hiera('rabbitmq::nr_ha_queues'), which is usually 0 meaning
# that the queues number will be CEIL(N/2) where N is the number of rabbitmq
# nodes. The special value of -1 represents the mode 'ha-mode: all'
#
# [*rabbit_nodes*]
# (Optional) The list of rabbitmq nodes names
# Defaults to hiera('rabbitmq_node_names')
#
# [*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::rabbitmq (
$bootstrap_node = hiera('rabbitmq_short_bootstrap_node_name'),
$erlang_cookie = hiera('rabbitmq::erlang_cookie'),
$user_ha_queues = hiera('rabbitmq::nr_ha_queues', 0),
$rabbit_nodes = hiera('rabbitmq_node_names'),
$pcs_tries = hiera('pcs_tries', 20),
$step = Integer(hiera('step')),
) {
if $::hostname == downcase($bootstrap_node) {
$pacemaker_master = true
} else {
$pacemaker_master = false
}
include ::tripleo::profile::base::rabbitmq
file { '/var/lib/rabbitmq/.erlang.cookie':
ensure => file,
owner => 'rabbitmq',
group => 'rabbitmq',
mode => '0400',
content => $erlang_cookie,
replace => true,
require => Class['::rabbitmq'],
}
if $step >= 1 and $pacemaker_master and hiera('stack_action') == 'UPDATE' {
tripleo::pacemaker::resource_restart_flag { 'rabbitmq-clone':
subscribe => Class['rabbitmq::service'],
}
}
if $step >= 2 {
pacemaker::property { 'rabbitmq-role-node-property':
property => 'rabbitmq-role',
value => true,
tries => $pcs_tries,
node => $::hostname,
}
if $pacemaker_master {
include ::stdlib
# The default nr of ha queues is ceiling(N/2)
if $user_ha_queues == 0 {
$nr_rabbit_nodes = size($rabbit_nodes)
$nr_ha_queues = $nr_rabbit_nodes / 2 + ($nr_rabbit_nodes % 2)
$params = "set_policy='ha-all ^(?!amq\\.).* {\"ha-mode\":\"exactly\",\"ha-params\":${nr_ha_queues}}'"
} elsif $user_ha_queues == -1 {
$params = 'set_policy=\'ha-all ^(?!amq\.).* {"ha-mode":"all"}\''
} else {
$nr_ha_queues = $user_ha_queues
$params = "set_policy='ha-all ^(?!amq\\.).* {\"ha-mode\":\"exactly\",\"ha-params\":${nr_ha_queues}}'"
}
pacemaker::resource::ocf { 'rabbitmq':
ocf_agent_name => 'heartbeat:rabbitmq-cluster',
resource_params => $params,
clone_params => 'ordered=true interleave=true',
meta_params => 'notify=true',
op_params => 'start timeout=200s stop timeout=200s',
tries => $pcs_tries,
location_rule => {
resource_discovery => 'exclusive',
score => 0,
expression => ['rabbitmq-role eq true'],
},
require => [Class['::rabbitmq'],
Pacemaker::Property['rabbitmq-role-node-property']],
}
}
}
}
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