gnocchi: use redis as coordination url

Currently gnocchi metricd is really slow making some tests timeout,
because the tooz backend is mysql.

And the futur autoscaling will reach the max connections of mysql
by creating many tooz locks.

This change switches to redis, this is one of the recommended backend to
use (mysql is not).

Change-Id: Iae81848e883f74b7f8f8f4cad58c2168e01b7321

Puppetfile

@@ -238,3 +238,7 @@ mod 'corosync',
   :git => 'https://github.com/voxpupuli/puppet-corosync',
   :ref => 'v5.0.0'
 
+mod 'redis',
+  :git => 'https://github.com/arioch/puppet-redis',
+  :ref => '1.2.4'
+

README.md

@@ -71,6 +71,7 @@ scenario](#all-in-one).
 | vitrage    |      X      |             |             |             |              |
 | watcher    |             |             |             |      X      |              |
 | bgpvpn-api |             |             |             |      X      |              |
+| redis      |      X      |             |             |             |              |
 
 When the Jenkins slave is created, the *run_tests.sh* script will be executed.
 This script will execute *install_modules.sh* that prepare /etc/puppet/modules

external_modules.txt

@@ -20,3 +20,4 @@ saz/puppet-memcached
 stankevich/puppet-python
 theforeman/puppet-dns
 voxpupuli/puppet-corosync
+arioch/puppet-redis

fixtures/scenario001.pp

@@ -20,11 +20,13 @@ case $::osfamily {
     # panko and vitrage are not packaged yet in debian/ubuntu
     $enable_panko    = false
     $enable_vitrage  = false
+    $enable_redis    = false
   }
   'RedHat': {
     $ipv6            = true
     $enable_panko    = true
     $enable_vitrage  = true
+    $enable_redis    = true
   }
   default: {
     fail("Unsupported osfamily (${::osfamily})")
@@ -64,6 +66,9 @@ include ::openstack_integration::aodh
 if $enable_vitrage {
   include ::openstack_integration::vitrage
 }
+if $enable_redis {
+  include ::openstack_integration::redis
+}
 include ::openstack_integration::gnocchi
 include ::openstack_integration::ceph
 include ::openstack_integration::provision

manifests/config.pp

@@ -32,12 +32,14 @@ class openstack_integration::config (
     # different: https://bugs.launchpad.net/swift/+bug/1610064
     $memcached_servers  = ["inet6:[${host}]:11211"]
     $swift_memcached_servers = ["[${host}]:11211"]
+    $tooz_url = "redis://[${host}]:6379"
   } else {
     $host        = '127.0.0.1'
     $rabbit_env  = {}
     $ip_version  = '4'
     $memcached_servers  = ["${host}:11211"]
     $swift_memcached_servers = $memcached_servers
+    $tooz_url = "redis://${host}:6379"
   }
 
   # in URL, brackets are needed

manifests/gnocchi.pp

@@ -51,7 +51,9 @@ class openstack_integration::gnocchi {
     }
     class { '::gnocchi::client': }
     class { '::gnocchi::metricd': }
-    class { '::gnocchi::storage': }
+    class { '::gnocchi::storage':
+      coordination_url => $::openstack_integration::config::tooz_url,
+    }
     class { '::gnocchi::storage::ceph':
       ceph_username => 'openstack',
       ceph_keyring  => '/etc/ceph/ceph.client.openstack.keyring',

manifests/redis.pp

@@ -0,0 +1,7 @@
+class openstack_integration::redis {
+  include ::openstack_integration::config
+
+  class { '::redis':
+    bind => $::openstack_integration::config::host
+  }
+}