puppet-tripleo/manifests/profile/pacemaker/rabbitmq.pp

168 lines
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Puppet

# 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
#
# [*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'
#
# [*rpc_scheme*]
# (Optional) Protocol for oslo messaging rpc backend.
# Defaults to hiera('oslo_messaging_rpc_scheme').
#
# [*rpc_bootstrap_node*]
# (Optional) The hostname of the node responsible for bootstrapping tasks
# when rabbit is configured for rpc messaging backend
# Defaults to hiera('oslo_messaging_rpc_bootstrap_node_name')
#
# [*rpc_nodes*]
# (Optional) Array of host(s) for oslo messaging rpc nodes.
# Defaults to hiera('oslo_messaging_rpc_node_names', []).
#
# [*notify_scheme*]
# (Optional) oslo messaging notify backend indicator.
# Defaults to hiera('oslo_messaging_notify_scheme').
#
# [*notify_bootstrap_node*]
# (Optional) The hostname of the node responsible for bootstrapping tasks
# when rabbit is configured for rpc messaging backend
# Defaults to hiera('oslo_messaging_notify_bootstrap_node_name')
#
# [*notify_nodes*]
# (Optional) Array of host(s) for oslo messaging notify nodes.
# Defaults to hiera('oslo_messaging_notify_node_names', []).
#
# [*pcs_tries*]
# (Optional) The number of times pcs commands should be retried.
# Defaults to hiera('pcs_tries', 20)
#
# [*step*]
# (Optional) The current step in deployment. See tripleo-heat-templates
# for more details.
# Defaults to hiera('step')
#
class tripleo::profile::pacemaker::rabbitmq (
$erlang_cookie = hiera('rabbitmq::erlang_cookie'),
$user_ha_queues = hiera('rabbitmq::nr_ha_queues', 0),
$rpc_scheme = hiera('oslo_messaging_rpc_scheme'),
$rpc_bootstrap_node = hiera('oslo_messaging_rpc_short_bootstrap_node_name'),
$rpc_nodes = hiera('oslo_messaging_rpc_node_names', []),
$notify_scheme = hiera('oslo_messaging_notify_scheme'),
$notify_bootstrap_node = hiera('oslo_messaging_notify_short_bootstrap_node_name'),
$notify_nodes = hiera('oslo_messaging_notify_node_names', []),
$pcs_tries = hiera('pcs_tries', 20),
$step = Integer(hiera('step')),
) {
if $rpc_scheme == 'rabbit' {
$bootstrap_node = $rpc_bootstrap_node
$rabbit_nodes = $rpc_nodes
} elsif $notify_scheme == 'rabbit' {
$bootstrap_node = $notify_bootstrap_node
$rabbit_nodes = $notify_nodes
} else {
$bootstrap_node = undef
$rabbit_nodes = []
}
if $bootstrap_node and $::hostname == downcase($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']],
notify => Exec['rabbitmq-ready'],
}
# This grep makes sure the rabbit app in erlang is up and running
# which is enough to guarantee that the user will eventually get
# replicated around the cluster
exec { 'rabbitmq-ready':
path => '/usr/sbin:/usr/bin:/sbin:/bin',
command => 'rabbitmqctl eval "lists:keymember(rabbit, 1, application:which_applications())." | grep -q true',
timeout => 30,
tries => 180,
try_sleep => 10,
refreshonly => true,
tag => 'rabbitmq_ready',
}
# Make sure that if we create rabbitmq users at the same step it happens
# after the cluster is up
Exec['rabbitmq-ready'] -> Rabbitmq_user<||>
Exec['rabbitmq-ready'] -> Rabbitmq_policy<||>
}
}
}