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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::redis
#
# OpenStack Redis Pacemaker HA profile for tripleo
#
# === Parameters
#
# [*bootstrap_node*]
# (Optional) The hostname of the node responsible for bootstrapping tasks
# Defaults to hiera('redis_short_bootstrap_node_name')
#
# [*enable_load_balancer*]
# (Optional) Whether load balancing is enabled for this cluster
# Defaults to hiera('enable_load_balancer', true)
#
# [*step*]
# (Optional) The current step in deployment. See tripleo-heat-templates
# for more details.
# Defaults to hiera('step')
#
# [*redis_file_limit*]
# (Deprecated) The file limit to put in /etc/security/limits.d/redis.conf
# for when redis is managed by pacemaker. Defaults to hiera('redis_file_limit')
# or 10240 (default in redis systemd limits). Note this option is deprecated
# since puppet-redis grew support for ulimits in cluster configurations.
# https://github.com/arioch/puppet-redis/pull/192. Set redis::ulimit via hiera
# to control this limit.
#
# [*pcs_tries*]
# (Optional) The number of times pcs commands should be retried.
# Defaults to hiera('pcs_tries', 20)
#
class tripleo::profile::pacemaker::database::redis (
$bootstrap_node = hiera('redis_short_bootstrap_node_name'),
$enable_load_balancer = hiera('enable_load_balancer', true),
$step = Integer(hiera('step')),
$redis_file_limit = undef,
$pcs_tries = hiera('pcs_tries', 20),
) {
if $::hostname == downcase($bootstrap_node) {
$pacemaker_master = true
} else {
$pacemaker_master = false
}
if $step >= 1 {
# If the old hiera key exists we use that to set the ulimit in order not to break
# operators which set it. We might remove this in a later release (post pike anyway)
$old_redis_file_limit = hiera('redis_file_limit', undef)
if $old_redis_file_limit != undef {
warning('redis_file_limit parameter is deprecated, use redis::ulimit in hiera.')
class { '::redis':
ulimit => $old_redis_file_limit,
}
} else {
include ::redis
}
if $pacemaker_master and hiera('stack_action') == 'UPDATE' {
tripleo::pacemaker::resource_restart_flag { 'redis-master':
# ouch, but trying to stay close how notification works in
# puppet-redis when pacemaker is not being used
subscribe => Exec["cp -p ${::redis::config_file_orig} ${::redis::config_file}"]
}
}
}
if $step >= 2 {
pacemaker::property { 'redis-role-node-property':
property => 'redis-role',
value => true,
tries => $pcs_tries,
node => $::hostname,
}
if $pacemaker_master {
pacemaker::resource::ocf { 'redis':
ocf_agent_name => 'heartbeat:redis',
master_params => '',
meta_params => 'notify=true ordered=true interleave=true',
resource_params => 'wait_last_known_master=true',
op_params => 'start timeout=200s stop timeout=200s',
tries => $pcs_tries,
location_rule => {
resource_discovery => 'exclusive',
score => 0,
expression => ['redis-role eq true'],
},
require => [Class['::redis'],
Pacemaker::Property['redis-role-node-property']],
}
}
}
}
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