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authorYanis Guenane <yanis.guenane@enovance.com>2015-04-07 12:42:35 +0200
committerYanis Guenane <yanis.guenane@enovance.com>2015-04-16 21:13:40 +0200
commit3bef84147bd7df52e8303bcb5481ce5d3351f997 (patch)
tree960cf99ad575a25e236b2295055360965d7d5597
parent6f5c208f8df4df034637acd1b5fd6f4b71012d8a (diff)
Loadbalancer: Add support for Redis
Add support for Redis in the loadbalancer setup. Redis loadbalancing system is particular as it does not provide clustering capabilities yet, hence this pattern[1] will be applied. [1] https://github.com/falsecz/haredis Change-Id: I80a6c284af9eceb6b669a03c5d93256261523331
-rw-r--r--manifests/loadbalancer.pp27
-rw-r--r--manifests/redis_notification.pp38
-rw-r--r--templates/redis/redis-notifications.sh.erb30
3 files changed, 95 insertions, 0 deletions
diff --git a/manifests/loadbalancer.pp b/manifests/loadbalancer.pp
index 1d60507..cb54682 100644
--- a/manifests/loadbalancer.pp
+++ b/manifests/loadbalancer.pp
@@ -130,6 +130,10 @@
# (optional) Enable or not RabbitMQ binding
# Defaults to false
#
+# [*redis*]
+# (optional) Enable or not Redis binding
+# Defaults to false
+#
class tripleo::loadbalancer (
$controller_virtual_ip,
$control_virtual_interface,
@@ -157,6 +161,7 @@ class tripleo::loadbalancer (
$horizon = false,
$mysql = false,
$rabbitmq = false,
+ $redis = false,
) {
if !$controller_host and !$controller_hosts {
@@ -572,4 +577,26 @@ class tripleo::loadbalancer (
}
}
+ if $redis {
+ haproxy::listen { 'redis':
+ ipaddress => [$controller_virtual_ip],
+ ports => 6379,
+ options => {
+ 'timeout' => [ 'client 0', 'server 0' ],
+ 'mode' => 'tcp',
+ 'balance' => 'first',
+ 'option' => ['tcp-check',],
+ 'tcp-check' => ['send info\ replication\r\n','expect string role:master'],
+ },
+ collect_exported => false,
+ }
+ haproxy::balancermember { 'redis':
+ listening_service => 'redis',
+ ports => '6379',
+ ipaddresses => $controller_hosts_real,
+ server_names => $controller_hosts_names_real,
+ options => ['check', 'inter 2000', 'rise 2', 'fall 5'],
+ }
+ }
+
}
diff --git a/manifests/redis_notification.pp b/manifests/redis_notification.pp
new file mode 100644
index 0000000..ad059a0
--- /dev/null
+++ b/manifests/redis_notification.pp
@@ -0,0 +1,38 @@
+# Copyright 2015 Red Hat, Inc.
+# All Rights Reserved.
+#
+# 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::redis_notification
+#
+# Configure the Redis notification script that talks to HAProxy
+#
+# === Parameters:
+#
+# [*haproxy_monitor_ip*]
+# (String) IP address on which HAProxy is listening on
+# Defaults to 127.0.0.1
+#
+class tripleo::redis_notification (
+ $haproxy_monitor_ip = '127.0.0.1',
+) {
+
+ file { '/usr/local/bin/redis-notifications.sh' :
+ ensure => file,
+ content => template('tripleo/redis/redis-notifications.sh.erb'),
+ owner => 'root',
+ group => 'root',
+ mode => '0755',
+ }
+
+}
diff --git a/templates/redis/redis-notifications.sh.erb b/templates/redis/redis-notifications.sh.erb
new file mode 100644
index 0000000..aa368e9
--- /dev/null
+++ b/templates/redis/redis-notifications.sh.erb
@@ -0,0 +1,30 @@
+#!/bin/bash
+HAPROXY="<%= @haproxy_monitor_ip %>:1993"
+CMD="$1"
+ARGS="$2"
+ARG1=`echo $ARGS | awk '{print $1}'`
+
+
+call_curl () {
+ DATA=`echo "s=$1&action=$2&b=%234" | sed -e s/:/%3A/`
+ curl --silent -o /dev/null $HAPROXY --data "$DATA"
+ echo curl $HAPROXY --data "$DATA"
+ return 0
+}
+
+
+[ "$CMD" = "+odown" ] && [ "$ARG1" = "master" ] && \
+ call_curl `echo $ARGS | awk '{print $2 ":" $3 ":" $4}'` 'disable'
+
+[ "$CMD" = "+sdown" ] && [ "$ARG1" = "slave" ] && \
+ call_curl `echo $ARGS | awk '{print $6 ":" $3 ":" $4}'` 'disable'
+
+[ "$CMD" = "+switch-master" ] && \
+ call_curl `echo $ARGS | awk '{print $1 ":" $4 ":" $5}'` 'enable' &&
+ call_curl `echo $ARGS | awk '{print $1 ":" $2 ":" $3}'` 'disable'
+
+[ "$CMD" = "-odown" ] && [ "$ARG1" = "master" ] && \
+ call_curl `echo $ARGS | awk '{print $2 ":" $3 ":" $4}'` 'enable'
+
+# without exit code, sentinel thinks the script is still running and locks any further execution
+exit 0