Want to give you credit for the initial repo, or at least get the benefit of my changes

.gitignore

@@ -0,0 +1 @@
+.vagrant

Readme

@@ -15,9 +15,12 @@ vagrant up percona3
 And this is all, you have now 3 servers running Percona XtraDB Cluster !
 
 
-These recipes also install GLB (Galera Load Balancer) on percona1.
+These recipes also install HAProxy on percona1.  One for writes (single cluster node) and one for reads (rr of all cluster nodes).
 
-You can read more on shinguz's post : http://www.fromdual.com/mysql-and-galera-load-balancer
+See cluster status: http://192.168.70.2:9999/
+
+Writes: 192.168.70.2:4306
+Reads: 192.168.70.2:5306
 
 
 Note: SElinux is disabled, there is a selinux policy file included that allows the server to start but the other nodes aren't yet able to sync, I need to investigate...

manifests/site.pp

@@ -1,30 +1,37 @@
 node percona1 {
 	include percona::repository
 	include percona::cluster
+	include percona::toolkit	
+	include xinet
 	include myhosts
+	include haproxy
 
-	Class['percona::repository'] -> Class['percona::cluster'] -> Class['galera::glb']
+	Class['percona::repository'] -> Class['percona::cluster']
+	Class['percona::repository'] -> Class['percona::toolkit']
 
-	class {
-		'galera::glb':
-			glb_list_backend => "192.168.70.2:3306:1 192.168.70.3:3306:1 192.168.70.4:3306"
-	}
 }
 
 node percona2 {
 	include percona::repository
 	include percona::cluster
+	include percona::toolkit	
+	include xinet
 	include myhosts
 
 	Class['percona::repository'] -> Class['percona::cluster']
+	Class['percona::repository'] -> Class['percona::toolkit']
 
 }
 
 node percona3 {
 	include percona::repository
 	include percona::cluster
+	include percona::toolkit	
+  include xinet
 	include myhosts
 
 	Class['percona::repository'] -> Class['percona::cluster']
+	Class['percona::repository'] -> Class['percona::toolkit']
+
 }
 

modules/galera/manifests/glb/service.pp

@@ -2,7 +2,7 @@
 
 	exec {
 		"run_glb":
-			command	=> "glbd --daemon --threads $glb_threads --control $glb_ip_control:4444 $glb_ip_loadbalancer:3306 $glb_list_backend",
+			command	=> "glbd --daemon --threads $glb_threads --control $glb_ip_control:4445 $glb_ip_loadbalancer:3306 $glb_list_backend",
 			path	=> ["/usr/sbin", "/bin" ],
 			require	=> Class['Galera::Glb::Packages'],
 			unless	=> "ps ax | grep [g]lbd 2> /dev/null",	

modules/haproxy/files/xtradb_cluster.cfg

@@ -0,0 +1,47 @@
+# this config needs haproxy-1.4.19
+
+global
+        log 127.0.0.1   local0
+        log 127.0.0.1   local1 notice
+        maxconn 4096
+        uid 99
+        gid 99
+        daemon
+        # debug
+        #quiet
+
+defaults
+        log     global
+        mode    http
+        option  tcplog
+        option  dontlognull
+        retries 3
+        option redispatch
+        maxconn 2000
+        contimeout      5000
+        clitimeout      50000
+        srvtimeout      50000
+
+listen cluster-writes 0.0.0.0:4306
+    mode tcp
+    balance roundrobin
+    option  httpchk
+
+    server percona1 192.168.70.2:3306 check port 9200 inter 12000 rise 3 fall 3 backup
+    server percona2 192.168.70.3:3306 check port 9200 inter 12000 rise 3 fall 3 backup
+    server percona3 192.168.70.4:3306 check port 9200 inter 12000 rise 3 fall 3 backup
+
+listen cluster-reads 0.0.0.0:5306
+  mode tcp
+  balance roundrobin
+  option  httpchk
+
+  server percona1 192.168.70.2:3306 check port 9200 inter 12000 rise 3 fall 3
+  server percona2 192.168.70.3:3306 check port 9200 inter 12000 rise 3 fall 3
+  server percona3 192.168.70.4:3306 check port 9200 inter 12000 rise 3 fall 3
+
+
+listen admin_page 0.0.0.0:9999
+	mode http
+  balance roundrobin
+	stats uri /

modules/haproxy/manifests/config.pp

@@ -0,0 +1,8 @@
+class haproxy::config {
+  file {
+    "/etc/haproxy/haproxy.cfg":
+      ensure => present,
+      require => Class['haproxy::packages'],
+      source => "/vagrant/modules/haproxy/files/xtradb_cluster.cfg";
+  }
+}

modules/haproxy/manifests/init.pp

@@ -0,0 +1,9 @@
+class haproxy {
+
+  include haproxy::packages
+  include haproxy::config
+  include haproxy::service
+
+  Class['haproxy::packages'] -> Class['haproxy::config'] -> Class['haproxy::service']
+
+}

modules/haproxy/manifests/packages.pp

@@ -0,0 +1,6 @@
+class haproxy::packages {
+  package {
+  	"haproxy": ensure => installed;
+  }  
+}
+

modules/haproxy/manifests/service.pp

@@ -0,0 +1,10 @@
+class haproxy::service {
+
+  service {
+		"haproxy":
+  	  ensure => 'running',
+			require	=> Class['haproxy::config'],
+			subscribe => File['/etc/haproxy/haproxy.cfg']
+	}
+
+}

modules/percona/manifests/cluster/config.pp

@@ -1,8 +1,11 @@
 class percona::cluster::config {
 
         if $hostname == "percona1" {
+              # Percona1 can't join itself, so if this node gets wacked out, it tries to talk to percona2
+                # $joinip = "192.168.70.3"
                 $joinip = " "
         } else {
+            # All other nodes join percona1
                 $joinip = "192.168.70.2"
         }
         file {

modules/percona/manifests/toolkit.pp

@@ -8,10 +8,8 @@
 		"perl-DBD-MySQL":
 			ensure  => installed,
 			require => Package['Percona-Server-shared-compat'];
-        	"percona-toolkit":
-                	provider => rpm,
-                	ensure   => installed,
-			require  => [ Package['perl-Time-HiRes'], Package['perl-TermReadKey'], Package['perl-DBD-MySQL'] ],
-                	source   => "http://www.percona.com/redir/downloads/percona-toolkit/percona-toolkit-1.0.1-1.noarch.rpm";
-	}
+    "percona-toolkit":
+    	ensure   => installed,
+			require  => [ Package['perl-Time-HiRes'], Package['perl-TermReadKey'], Package['perl-DBD-MySQL'] ];
+		}
 }

modules/percona/templates/cluster/my.cnf.erb

@@ -1,20 +1,24 @@
+[mysqld_safe]
+wsrep_urls=gcomm://192.168.70.2:4567,gcomm://192.168.70.3:4567,gcomm://192.168.70.4:4567,gcomm://
+
 [mysqld]
 datadir=/var/lib/mysql
 user=mysql
 log_error=error.log
 binlog_format=ROW
 wsrep_provider=/usr/lib64/libgalera_smm.so
-wsrep_cluster_address=gcomm://<%= joinip %>
 wsrep_sst_receive_address=<%= ipaddress_eth1 %>
 wsrep_node_incoming_address=<%= ipaddress_eth1 %> 
 wsrep_slave_threads=2
 wsrep_cluster_name=trimethylxanthine
-wsrep_sst_method=rsync
+#wsrep_sst_method=rsync
+wsrep_sst_method=xtrabackup
 wsrep_node_name=<%= hostname %>
 innodb_locks_unsafe_for_binlog=1
 innodb_autoinc_lock_mode=2
 innodb_log_file_size=64M
 bind-address=<%= ipaddress_eth1 %>
 
 [mysql]
+user=root
 prompt="<%=hostname %> mysql> "

modules/xinet/files/mysqlchk

@@ -0,0 +1,19 @@
+# default: on
+# description: mysqlchk
+service mysqlchk
+{
+# this is a config for xinetd, place it in /etc/xinetd.d/
+        disable = no
+        type = UNLISTED
+        flags = REUSE
+        socket_type = stream
+        port = 9200
+        wait = no
+        user = nobody
+        server = /usr/bin/clustercheck
+        log_on_failure += USERID
+        only_from = 192.168.70.0/24
+        # recommended to put the IPs that need
+        # to connect exclusively (security purposes)
+        per_source = UNLIMITED
+}

modules/xinet/manifests/config.pp

@@ -0,0 +1,16 @@
+class xinet::config {
+  file {
+    "/etc/xinetd.d/mysqlchk":
+      ensure => present,
+      owner => root, group => root,
+      require => [Class['xinet::packages'], Class['percona::cluster::config']],
+      source => "/vagrant/modules/xinet/files/mysqlchk";
+  }
+
+  mysql::rights { "clustercheck":
+    user     => "clustercheckuser",
+    password => "clustercheckpassword!",
+    database => "mysql",
+    priv    => ["process_priv"]
+  }
+}

modules/xinet/manifests/init.pp

@@ -0,0 +1,9 @@
+class xinet {
+
+  include xinet::packages
+  include xinet::config
+  include xinet::service
+
+  Class['xinet::packages'] -> Class['xinet::config'] -> Class['xinet::service']
+
+}

modules/xinet/manifests/packages.pp

@@ -0,0 +1,5 @@
+class xinet::packages {
+  package {
+  	"xinetd": ensure => installed;
+  }  
+}

modules/xinet/manifests/service.pp

@@ -0,0 +1,8 @@
+class xinet::service {
+  service {
+  	"xinetd":
+	    ensure => 'running',
+  		require	=> Class['xinet::packages'],
+  		subscribe => File['/etc/xinetd.d/mysqlchk'];
+  }  
+}