The old playbook files. Some are missing.

207 changed files with 8630 additions and 2 deletions
--- a/86
+++ b/86
@ -0,0 +1,86 @@
+2013-11-06  Andrea Dell'Amico  <adellam@sevenseas.org>
+
+	* templates/hadoop-nrpe.cfg.j2: Add the correct entry for the tasktracker event handler.
+
+2013-11-04  Andrea Dell'Amico  <adellam@sevenseas.org>
+
+	* templates/iptables-rules.v4.j2: Add access to the hbase master rpc port from the isti network.
+
+2013-10-10  Andrea Dell'Amico  <adellam@sevenseas.org>
+
+	* templates/hbase-site.j2: Add the property hbase.master.loadbalance.bytable to try a better balance for our workload. Reference here: http://answers.mapr.com/questions/7049/table-only-on-single-region-server
+
+2013-10-09  Andrea Dell'Amico  <adellam@sevenseas.org>
+
+	* templates/nagios-server/hadoop-cluster/services.cfg.j2: Handler to restart the tasktracker when it fails.
+	* templates/iptables-rules.*.j2: iptables rules to block access to the services ports from outside CNR.
+
+2013-10-07  Andrea Dell'Amico  <adellam@sevenseas.org>
+
+	* templates/nagios-server: added checks for the logstash host and services
+	* logstash.yml: Add logstash with remote syslog to aggregate all the workers logs. Needed for solr.
+
+2013-10-01  Andrea Dell'Amico  <adellam@sevenseas.org>
+
+	* templates/: management portal that redirects to the services web interfaces.
+
+2013-09-23  Andrea Dell'Amico  <adellam@sevenseas.org>
+
+	* tasks/jobtracker-ha.yml: HA configuration for the jobtracker. jobtracker.t.hadoop and quorum4.t.hadoop are the two masters.
+
+2013-09-19  Andrea Dell'Amico  <adellam@sevenseas.org>
+
+	* all.yml: HDFS is now HA. All the datanodes lists are generated from the hosts file and are not static anymore. Changed nagios to reflect the new configuration.
+
+2013-09-17  Andrea Dell'Amico  <adellam@sevenseas.org>
+
+	* templates: Changed the system-* scripts to manage the second namenode instance. Removed the secondary namenode start/stop script
+
+2013-09-12  Andrea Dell'Amico  <adellam@sevenseas.org>
+
+	* hadoop-test.yml: New quorum4.t.hadoop node. Zookeeper now has 5
+	quorum nodes. HBASE master HA. quorum4 is the other instance.
+
+2013-07-29  Andrea Dell'Amico  <adellam@sevenseas.org>
+
+	* templates/datanode-hdfs-site.j2: Added "support_append" as "true" and max_xcievers as 1024
+
+2013-06-20  Andrea Dell'Amico  <adellam@sevenseas.org>
+
+	* hadoop-ganglia.yml: The ganglia configuration is now differentiated between datanodes, jobtracker, hbase master, hdfs namenode, hdfs secondary namenode
+
+2013-02-27  Andrea Dell'Amico  <adellam@sevenseas.org>
+
+	* vars/hadoop-global-vars.yml: mapred_tasktracker_reduce_tasks_maximum: 5, hbase_regionserver_heap_size: 3192
+
+2013-02-22  Andrea Dell'Amico  <adellam@isti.cnr.it>
+
+	* init.sh: Create hdfs directory /jobtracker to store the jobtracker history
+	* templates/mapred-site-jobtracker.j2: Activate permanent jobtracker history
+	* jobtracker.yml: Cleanup
+
+2013-02-18  Andrea Dell'Amico  <adellam@isti.cnr.it>
+
+	* vars/hadoop-global-vars.yml: mapred_child_java_opts: "-Xmx3092M", mapred_map_child_java_opts: "-Xmx2048M", mapred_reduce_child_java_opts: "-Xmx1512M", hbase_regionserver_heap_size: 4092
+
+2013-02-18  Andrea Dell'Amico  <adellam@isti.cnr.it>
+
+	* vars/hadoop-global-vars.yml: hbase_master_heap_size: 5120, hbase_regionserver_heap_size: 3192
+
+2013-02-18  Andrea Dell'Amico  <adellam@isti.cnr.it>
+
+	* vars/hadoop-global-vars.yml (hbase_thrift_heap_size): mapred_child_java_opts: "-Xmx1512M", mapred_map_child_java_opts: "-Xmx3092M", mapred_reduce_child_java_opts: "-Xmx2048M", hbase_master_heap_size: 3072
+
+2013-02-16  Andrea Dell'Amico  <adellam@isti.cnr.it>
+
+	* templates/hbase-thrift-env.sh.j2: Disabled the jmx console for hbase thrift
+
+	* templates/hbase-master-env.sh.j2: disabled the master jmx console
+
+	* vars/hadoop-global-vars.yml: zookeeper_max_timeout: 240000, fixed the zookeeper quorum host naming
+
+2013-02-16  Andrea Dell'Amico  <adellam@isti.cnr.it>
+
+	* vars/hadoop-global-vars.yml: mapred_child_java_opts: "-Xmx2G", mapred_reduce_child_java_opts: "-Xmx2512M", hbase_regionserver_heap_size: 5000
+
+
--- a/README.md
+++ b/README.md
@ -1,3 +1,303 @@
-# hadoop-ansible

-Ansible playbook that installs and configures a Hadoop cluster.
+# Hadoop cluster based on the CDH 4 packages.
+
+This is the playbook that I used to install and configure the Hadoop cluster @CNR, based on the deb packages found in the Cloudera repositories.
+No cloudera manager was used nor installed.
+
+## The cluster.
+
+The cluster structure is the following:
+
+- jobtracker.t.hadoop.research-infrastructures.eu (3.5GB RAM, 4 CPUs):
+  - mapreduce HA jobtracker
+  - zookeeper quorum
+  - HA HDFS journal
+- quorum4.t.hadoop.research-infrastructures.eu (3.5GB RAM, 4 CPUs):
+  - mapreduce HA jobtracker
+  - zookeeper quorum
+  - HA HDFS journal
+- nn1.t.hadoop.research-infrastructures.eu (3.5GB RAM, 4 CPUs):
+  - hdfs HA namenode
+  - zookeeper quorum
+  - HA HDFS journal
+- nn2.t.hadoop.research-infrastructures.eu (3.5GB RAM, 4 CPUs):
+  - hdfs HA namenode
+  - zookeeper quorum
+  - HA HDFS journal
+- hbase-master.t.hadoop.research-infrastructures.eu (3.5GB RAM, 4 CPUs):
+  - hbase primary master
+  - hbase thrift 
+  - zookeeper quorum
+  - HA HDFS journal
+- hbase-master2.t.hadoop.research-infrastructures.eu (2GB RAM, 2 CPUs):
+  - HBASE secondary master 
+  - hbase thrift 
+
+- node{2..13}.t.hadoop.research-infrastructures.eu (9GB RAM, 8 CPUs, 1000GB external storage for HDFS each):
+  - mapreduce tasktracker
+  - hdfs datanode
+  - hbase regionserver
+  - solr (sharded)
+
+- hive.t.hadoop.research-infrastructures.eu:
+  - hue
+  - hive
+  - oozie
+  - sqoop
+
+- db.t.hadoop.research-infrastructures.eu:
+  - postgresql instance for hue and hive
+
+
+Su jobtracker.t.hadoop.research-infrastructures.eu sono installati gli
+script che gestiscono tutti i servizi. È possibile fermare/attivare i
+singoli servizi oppure tutto il cluster, rispettando l'ordine
+corretto.
+
+Hanno tutti prefisso "service-" e il nome dello script dà un'idea delle operazioni che verranno eseguite:
+service-global-hadoop-cluster
+service-global-hbase
+service-global-hdfs
+service-global-mapred
+service-global-zookeeper
+service-hbase-master
+service-hbase-regionserver
+service-hbase-rest
+service-hdfs-datanode
+service-hdfs-httpfs
+service-hdfs-journalnode
+service-hdfs-namenode
+service-hdfs-secondarynamenode
+service-mapreduce-jobtracker
+service-mapreduce-tasktracker
+service-zookeeper-server
+
+Prendono come parametro "start,stop,status,restart"
+
+
+- jobtracker URL:
+http://jobtracker.t.hadoop.research-infrastructures.eu:50030/jobtracker.jsp
+- HDFS URL:
+http://namenode.t.hadoop.research-infrastructures.eu:50070/dfshealth.jsp
+- HBASE master URL:
+http://hbase-master.t.hadoop.research-infrastructures.eu:60010/master-status
+- HUE Web Interface:
+http://quorum2.t.hadoop.research-infrastructures.eu:8888
+
+- URL ganglia, per le metriche del cluster:
+http://monitoring.research-infrastructures.eu/ganglia/?r=hour&cs=&ce=&s=by+name&c=Openaire%252B%2520Hadoop%2520TEST&tab=m&vn=
+- URL Nagios, per lo stato dei servizi (da attivare):
+http://monitoring.research-infrastructures.eu/nagios3/
+------------------------------------------------------------------------------------------------
+dom0/nodes/san map		data
+
+dlib18x:       *node8*	e90.6 (dlibsan9)
+dlib19x:       *node9*	e90.7 (dlibsan9)
+dlib20x:       *node10*	e90.8 (dlibsan9)
+dlib22x:       *node11*	e90.5 (dlibsan9)
+	       *node7*	e63.4 (dlibsan6)
+dlib23x:       *node12*	e80.3 (dlibsan8)
+	       *node13*	e80.4 (dlibsan8)
+dlib24x:       *node2*	e25.1 (dlibsan2)
+	       *node3*	e74.1 (dlibsan7)
+dlib25x:       *node4*	e83.4 (dlibsan8)
+dlib26x:       *node5*	e72.1 (dlibsan7)
+       	       *node6*	e63.3 (dlibsan6)
+
+------------------------------------------------------------------------------------------------
+Submitting a job (supporting multiple users)
+To support multiple users you create UNIX user accounts only in the master node.
+
+Sul namenode:
+
+#groupadd supergroup
+(da eseguire una sola volta)
+
+#adduser claudio
+...
+
+# su - hdfs
+$ hadoop dfs -mkdir /home/claudio
+$ hadoop dfs -chown -R claudio:supergroup /home/claudio
+
+(aggiungere claudio al gruppo supergroup)
+
+
+  Important:
+
+If you do not create /tmp properly, with the right permissions as shown below, you may have problems with CDH components later. Specifically, if you don't create /tmp yourself, another process may create it automatically with restrictive permissions that will prevent your other applications from using it.
+
+Create the /tmp directory after HDFS is up and running, and set its permissions to 1777 (drwxrwxrwt), as follows:
+
+$ sudo -u hdfs hadoop fs -mkdir /tmp
+$ sudo -u hdfs hadoop fs -chmod -R 1777 /tmp
+
+  Note:
+
+If Kerberos is enabled, do not use commands in the form sudo -u <user> <command>; they will fail with a security error. Instead, use the following commands: $ kinit <user> (if you are using a password) or $ kinit -kt <keytab> <principal> (if you are using a keytab) and then, for each command executed by this user, $ <command>
+Step 8: Create MapReduce /var directories
+
+sudo -u hdfs hadoop fs -mkdir -p /var/lib/hadoop-hdfs/cache/mapred/mapred/staging
+sudo -u hdfs hadoop fs -chmod 1777 /var/lib/hadoop-hdfs/cache/mapred/mapred/staging
+sudo -u hdfs hadoop fs -chown -R mapred /var/lib/hadoop-hdfs/cache/mapred
+
+Step 9: Verify the HDFS File Structure
+
+$ sudo -u hdfs hadoop fs -ls -R /
+
+You should see:
+
+drwxrwxrwt   - hdfs supergroup          0 2012-04-19 15:14 /tmp
+drwxr-xr-x   - hdfs     supergroup          0 2012-04-19 15:16 /var
+drwxr-xr-x   - hdfs     supergroup          0 2012-04-19 15:16 /var/lib
+drwxr-xr-x   - hdfs     supergroup          0 2012-04-19 15:16 /var/lib/hadoop-hdfs
+drwxr-xr-x   - hdfs     supergroup          0 2012-04-19 15:16 /var/lib/hadoop-hdfs/cache
+drwxr-xr-x   - mapred   supergroup          0 2012-04-19 15:19 /var/lib/hadoop-hdfs/cache/mapred
+drwxr-xr-x   - mapred   supergroup          0 2012-04-19 15:29 /var/lib/hadoop-hdfs/cache/mapred/mapred
+drwxrwxrwt   - mapred   supergroup          0 2012-04-19 15:33 /var/lib/hadoop-hdfs/cache/mapred/mapred/staging
+
+Step 10: Create and Configure the mapred.system.dir Directory in HDFS
+
+After you start HDFS and create /tmp, but before you start the JobTracker (see the next step), you must also create the HDFS directory specified by the mapred.system.dir parameter (by default ${hadoop.tmp.dir}/mapred/system and configure it to be owned by the mapred user.
+
+To create the directory in its default location:
+
+$ sudo -u hdfs hadoop fs -mkdir /tmp/mapred/system
+$ sudo -u hdfs hadoop fs -chown mapred:hadoop /tmp/mapred/system
+
+  Important:
+
+If you create the mapred.system.dir directory in a different location, specify that path in the conf/mapred-site.xml file.
+
+When starting up, MapReduce sets the permissions for the mapred.system.dir directory to drwx------, assuming the user mapred owns that directory.
+Step 11: Start MapReduce
+
+To start MapReduce, start the TaskTracker and JobTracker services
+
+On each TaskTracker system:
+
+$ sudo service hadoop-0.20-mapreduce-tasktracker start
+
+On the JobTracker system:
+
+$ sudo service hadoop-0.20-mapreduce-jobtracker start
+
+Step 12: Create a Home Directory for each MapReduce User
+
+Create a home directory for each MapReduce user. It is best to do this on the NameNode; for example:
+
+$ sudo -u hdfs hadoop fs -mkdir  /user/<user>
+$ sudo -u hdfs hadoop fs -chown <user> /user/<user>
+
+where <user> is the Linux username of each user.
+
+Alternatively, you can log in as each Linux user (or write a script to do so) and create the home directory as follows:
+
+sudo -u hdfs hadoop fs -mkdir /user/$USER
+sudo -u hdfs hadoop fs -chown $USER /user/$USER
+
+
+
+------------------------------------------------------------------------------------------------
+We use the jobtracker as provisioning server
+Correct start order (reverse to obtain the stop order):
+• HDFS (NB: substitute secondarynamenode with journalnode when we will have HA)
+• MapReduce
+• Zookeeper
+• HBase
+• Hive Metastore
+• Hue
+• Oozie
+• Ganglia
+• Nagios
+
+
+I comandi di init si trovano nel file "init.sh" nel repository ansible.
+
+
+Errore da indagare:
+http://stackoverflow.com/questions/6153560/hbase-client-connectionloss-for-hbase-error
+
+# GC hints
+http://stackoverflow.com/questions/9792590/gc-tuning-preventing-a-full-gc?rq=1
+
+HBASE troubleshooting
+
+- Se alcune region rimangono in "transition" indefinitamente, è possibile provare a risolvere il problema da shell:
+
+# su - hbase
+$ hbase hbck -fixAssignments
+
+Potrebbe essere utile anche
+$ hbase hbck -repairHoles
+
+-----------------------------------------------------
+Quando si verifica: "ROOT stuck in assigning forever"
+
+bisogna:
+- verificare che non ci siano errori relativi a zookeeper. Se ci sono, far ripartire zookeeper e poi tutto il cluster hbase
+- Far ripartire il solo hbase master
+-----------------------------------------------------
+Quando ci sono tabelle disabilitate, ma che risultano impossibili da abilitare o eliminare:
+# su - hbase
+$ hbase hbck -fixAssignments
+
+* Restart del master hbase
+
+-----------------------------------------------------
+Vedi: http://comments.gmane.org/gmane.comp.java.hadoop.hbase.user/32838
+Ed in generale, per capire il funzionamento: http://hortonworks.com/blog/apache-hbase-region-splitting-and-merging/
+
+Tool per il monitoraggio di hbase quando è configurato per il manual splitting:
+https://github.com/sentric/hannibal
+
+---------------------------------------------------------------------------------
+
+2013-02-22 10:24:46,492 INFO org.apache.hadoop.mapred.TaskTracker:  Using ResourceCalculatorPlugin : org.apache.hadoop.util.LinuxResourceCalculatorPlugin@41a7fead
+2013-02-22 10:24:46,492 INFO org.apache.hadoop.mapred.TaskTracker: Starting thread: Map-events fetcher for all reduce tasks on tracker_node2.t.hadoop.research-infrastructures.eu:localhost/127.0.0.1:47798
+2013-02-22 10:24:46,492 WARN org.apache.hadoop.mapred.TaskTracker: TaskTracker's totalMemoryAllottedForTasks is -1 and reserved physical memory is not configured. TaskMemoryManager is disabled.
+2013-02-22 10:24:46,571 INFO org.apache.hadoop.mapred.IndexCache: IndexCache created with max memory = 10485760
+
+---
+Post interessante che tratta la configurazione ed i vari parametri: http://gbif.blogspot.it/2011/01/setting-up-hadoop-cluster-part-1-manual.html
+
+
+Lista di nomi di parametri deprecati e il loro nuovo nome: http://hadoop.apache.org/docs/current/hadoop-project-dist/hadoop-common/DeprecatedProperties.html
+
+---
+How to decommission a worker node
+
+1. If they are many, reduce the hdfs redundancy factor
+2. Stop the regionserver on the node
+3. Add the node to the hdfs and jobtracker exclude list
+
+./run.sh mapred.yml -i inventory/hosts.production -l jt_masters --tags=hadoop_workers
+./run.sh hadoop-hdfs.yml -i inventory/hosts.production -l hdfs_masters --tags=hadoop_workers
+
+4. Refresh the hdfs and jobtracker configuration
+
+hdfs dfsadmin -refreshNodes
+mapred mradmin -refreshNodes
+
+5. Remove the node from the list of allowed ones
+
+5a. Edit the inventory
+
+5b. Run
+./run.sh hadoop-common.yml -i inventory/hosts.production --tags=hadoop_workers
+./run.sh mapred.yml -i inventory/hosts.production -l jt_masters --tags=hadoop_workers
+./run.sh hadoop-hdfs.yml -i inventory/hosts.production -l hdfs_masters --tags=hadoop_workers
+
+---------------------------------------------------------------------------------
+Nagios monitoring
+
+- The handlers to restart the services are managed via nrpe. To get them work, we need to:
+  - Add an entry in nrpe.cfg. The command name needs to start with "global_restart_" and
+    the remaining part of the name must coincide with the name of the service.
+    For example:
+    command[global_restart_hadoop-0.20-mapreduce-tasktracker]=/usr/bin/sudo /usr/sbin/service hadoop-0.20-mapreduce-tasktracker restart
+  - Add a handler to the nagios service. The command needs the service name as parameter
+    Example:
+    event_handler			restart-service!hadoop-0.20-mapreduce-tasktracker
+
+---------------------------------------------------------------------------------
--- a/README.new
+++ b/README.new
@ -0,0 +1,32 @@
+
+httpfs: We need to install it on only one machine (two for redundancy). Let's use the namenodes.
+
+Move the second jobtracker on a dedicated machine.
+
+hbase thrift: let's have two of them, on the nodes that run the hbase masters
+
+Impala: needs to be installed on all the datanodes. After that, hue-impala can be installed on the hue server
+
+NB: /etc/zookeeper/conf/zoo.cfg needs to be distributed on all
+datanodes.
+
+Create the new disks: lvcreate -l 238465 -n node11.t.hadoop.research-infrastructures.eu-data-hdfs dlibsan6 /dev/md3
+# Move the data:
+rsync -qaxvH --delete --numeric-ids /mnt/disk/ dlibsan7:/mnt/disk/
+
+----------
+dfs.socket.timeout,  for read timeout
+dfs.datanode.socket.write.timeout, for write timeout
+
+In fact, the read timeout value is used for various connections in
+DFSClient, if you only increase dfs.datanode.socket.write.timeout, the
+timeout can continue to happen.
+
+I tried to generate 1TB data with teragen across more than 40 data
+nodes, increasing writing timeout has not fixed the problem. When I
+increased both values above 600000, it disappeared.
+----------
+
+
+To configure yarn:
+http://docs.hortonworks.com/HDPDocuments/HDP2/HDP-2.0.9.1/bk_installing_manually_book/content/rpm-chap1-11.html
--- a/files/jmxremote.access
+++ b/files/jmxremote.access
@ -0,0 +1,2 @@
+monitorRole readonly
+controlRole readwrite
--- a/group_vars/all/all.yml
+++ b/group_vars/all/all.yml
@ -0,0 +1,374 @@
+---
+# Generic machines data
+time_zone: 'Europe/Rome'
+cpu_cores: 8
+datanode_ram: 11000
+nagios_enabled: True
+ganglia_enabled: False
+ganglia_gmond_hdfs_datanodes_port: "8640:8660"
+ganglia_gmond_jobtracker_port: "8640:8660"
+ganglia_gmond_hbmaster_port: "8640:8660"
+ganglia_gmond_namenode_port: "8640:8660"
+configure_munin: True
+
+# JDK (Oracle)
+jdk_version:
+    - 7
+    - 8
+jdk_default: 8
+java_home: '/usr/lib/jvm/java-{{ jdk_default }}-oracle'
+jdk_java_home: '{{ java_home }}'
+
+# PKG state: latest or present. Set to 'latest' when you want to upgrade the installed packages version.
+hadoop_pkg_state: present
+#
+#
+# Global data
+#
+worker_nodes_num: 4
+worker_node_start: 2
+worker_node_end: 5
+worker_node_swappiness: 0
+
+dns_domain: t.hadoop.research-infrastructures.eu
+namenode_hostname: 'nn1.{{ dns_domain }}'
+secondary_nm_hostname: 'nn2.{{ dns_domain }}'
+quorum_0_node_hostname: 'quorum0.{{ dns_domain }}'
+quorum_1_node_hostname: 'quorum1.{{ dns_domain }}'
+quorum_2_node_hostname: 'quorum2.{{ dns_domain }}'
+quorum_3_node_hostname: 'quorum3.{{ dns_domain }}'
+quorum_4_node_hostname: 'quorum4.{{ dns_domain }}'
+hbase_master_1_hostname:  'hbase-master1.{{ dns_domain }}'
+hbase_master_2_hostname:  'hbase-master2.{{ dns_domain }}'
+
+ldap:
+  server: ldap://ldap.sub.research-infrastructures.eu
+  search_bind_auth: False
+  username_pattern: "uid=<username>,ou=People,o=Users,ou=Organizations,dc=research-infrastructures,dc=eu"
+
+hadoop_ldap_uri: ldap://ldap.sub.research-infrastructures.eu
+hadoop_ldap_base_dn: "dc=research-infrastructures,dc=eu"
+hadoop_ldap_search_bind_auth: False
+hadoop_ldap_username_pattern: "uid=<username>,ou=People,o=Users,ou=Organizations,dc=research-infrastructures,dc=eu"
+
+#
+# LOGGING
+#
+# WARN,INFO,DEBUG,ERROR
+hadoop_log_level: INFO
+#
+# RFA is the rolling file appender
+hadoop_log_appender: RFA
+hadoop_log_appender_max_filesize: 256MB
+# max backup index is ignored if the appender is daily rolling file
+hadoop_log_appender_max_backupindex: 10
+#
+# We can use a logstash collector
+hadoop_send_to_logstash: False
+# Ditch the local appender if you want a logstash only solution
+hadoop_logstash_appender: RFA,LOGSTASH
+hadoop_logstash_collector_host: 'logstash.{{ dns_domain }}'
+hadoop_logstash_collector_socketappender_port: 4560
+hadoop_logstash_collector_socketappender_reconndelay: 10000
+#
+# rsyslog
+rsyslog_install_newer_package: True
+rsyslog_send_to_elasticsearch: False
+rsyslog_use_queues: False
+rsyslog_use_elasticsearch_module: False
+rsys_elasticsearch_collector_host: '{{ hadoop_logstash_collector_host }}'
+rsys_elasticsearch_collector_port: 9200
+
+#
+# General hadoop
+#
+initialize_hadoop_cluster: False
+
+hadoop_cluster_name: "nmis-hadoop-cluster"
+hadoop_data_dir: /data
+hadoop_conf_dir: '/etc/hadoop/conf.{{ hadoop_cluster_name|lower }}'
+hadoop_mapred_home: /usr/lib/hadoop-0.20-mapreduce
+
+hadoop_hdfs_data_disk:
+  - { mountpoint: '/data', device: 'xvda3', fstype: 'xfs' }
+#
+# Hadoop default heapsize
+# The default is 1000
+hadoop_default_heapsize: 1024
+hadoop_default_java_opts: "-server -Djava.awt.headless=true -Djava.net.preferIPv4Stack=true -XX:+UseConcMarkSweepGC -Dfile.encoding=UTF-8"
+hadoop_jmx_enabled: False
+
+#
+# HDFS
+#
+hdfs_cluster_id: '{{ hadoop_cluster_name }}'
+hdfs_cluster_nn_id_1: nn1
+hdfs_cluster_nn_id_2: nn2
+hdfs_cluster_ids: "{{ hdfs_cluster_nn_id_1 }},{{ hdfs_cluster_nn_id_2 }}"
+hdfs_namenode_1_hostname: '{{ namenode_hostname }}'
+hdfs_namenode_2_hostname: '{{ secondary_nm_hostname }}'
+hdfs_data_dir: '{{ hadoop_data_dir }}/dfs'
+hdfs_nn_data_dir: nn
+hdfs_dn_data_dir: dn
+hdfs_dn_balance_bandwidthPerSec: 2097152
+hdfs_support_append: "true"
+hdfs_nn_rpc_port: 8020
+hdfs_nn_http_port: 50070
+hdfs_nn_client_port: 57045
+# handler count. Recommended: ln(number of datanodes) * 20
+hdfs_nn_handler_count: 50
+# Recommended: up to 128MB, 134217728 bytes (this is the default, is a client parameter)
+hdfs_block_size: 16777216
+hdfs_repl_max: 256
+hdfs_replication: 1
+# Set to 0 to disable the trash use. Note that the client can enable it.
+hdfs_fs_trash_interval: 10060
+hdfs_datanode_max_xcievers: 1024
+hdfs_datanode_http_port: 50075
+hdfs_datanode_ipc_port: 50020
+hdfs_datanode_rpc_port: 50010
+hdfs_dfs_socket_timeout: 600000
+hdfs_dfs_socket_write_timeout: 600000
+# See http://www.cloudera.com/content/cloudera/en/documentation/cdh4/latest/CDH4-Installation-Guide/cdh4ig_topic_11_6.html
+hdfs_read_shortcircuit: True
+hdfs_read_shortcircuit_cache_size: 3000
+hdfs_read_shortcircuit_cache_expiry: 50000
+hdfs_read_shortcircuit_cache_dir: '/var/run/hadoop-hdfs'
+hdfs_journal_id: '{{ hdfs_cluster_id }}'
+hdfs_journal_port: 8485
+hdfs_journal_0: '{{ quorum_0_node_hostname }}'
+hdfs_journal_1: '{{ quorum_1_node_hostname }}'
+hdfs_journal_2: '{{ quorum_2_node_hostname }}'
+hdfs_journal_3: '{{ quorum_3_node_hostname }}'
+hdfs_journal_4: '{{ quorum_4_node_hostname }}'
+hdfs_journal_data_dir: jn
+hdfs_journal_http_port: 8480
+hdfs_zkfc_port: 8019
+hdfs_webhdfs_enabled: True
+hdfs_users_supergroup: supergroup
+# The following is used to retrieve the ssh key needed for the HA failover
+hdfs_user_home: /usr/lib/hadoop
+
+httpfs_user: httpfs
+httpfs_host: 'hue.{{ dns_domain }}'
+httpfs_host_1: 'nn1.{{ dns_domain }}'
+httpfs_host_2: 'nn2.{{ dns_domain }}'
+httpfs_port: 14000
+httpfs_catalina_work_dir: /usr/lib/hadoop-httpfs/work
+
+#
+# Zookeeper
+zookeeper_conf_dir: '/etc/zookeeper/conf.{{ hadoop_cluster_name|lower }}'
+zookeeper_log_dir: '/var/log/zookeeper'
+zookeeper_client_port: 2182
+zookeeper_quorum_port: 4182
+zookeeper_leader_port: 3182
+zookeeper_min_timeout: 30000
+zookeeper_max_timeout: 240000
+zookeeper_quorum_0: '{{ quorum_0_node_hostname }}'
+zookeeper_quorum_1: '{{ quorum_1_node_hostname }}'
+zookeeper_quorum_2: '{{ quorum_2_node_hostname }}'
+zookeeper_quorum_3: '{{ quorum_3_node_hostname }}'
+zookeeper_quorum_4: '{{ quorum_4_node_hostname }}'
+zookeeper_maxclient_connections: 240
+zookeeper_nodes: "{{ zookeeper_quorum_0 }},{{ zookeeper_quorum_1 }},{{ zookeeper_quorum_2 }},{{ zookeeper_quorum_3 }},{{ zookeeper_quorum_4 }}"
+zookeeper_cluster: "{{ zookeeper_quorum_0 }}:{{ zookeeper_client_port }},{{ zookeeper_quorum_1 }}:{{ zookeeper_client_port }},{{ zookeeper_quorum_2 }}:{{ zookeeper_client_port }},{{ zookeeper_quorum_3 }}:{{ zookeeper_client_port }},{{ zookeeper_quorum_4 }}:{{ zookeeper_client_port }}"
+
+#
+# Jobtracker
+#
+jobtracker_cluster_id: nmis-hadoop-jt
+jobtracker_node_1_hostname: 'jobtracker.{{ dns_domain }}'
+jobtracker_node_2_hostname: 'jobtracker2.{{ dns_domain }}'
+jobtracker_cluster_id_1: jt1
+jobtracker_cluster_id_2: jt2
+jobtracker_cluster_id1_rpc_port: 8021
+jobtracker_cluster_id2_rpc_port: 8022
+jobtracker_cluster_id1_ha_rpc_port: 8023
+jobtracker_cluster_id2_ha_rpc_port: 8024
+jobtracker_cluster_id1_http_port: 50030
+jobtracker_cluster_id2_http_port: 50031
+jobtracker_http_port: 9290
+jobtracker_persistent_jobstatus: 'true'
+jobtracker_restart_recover: 'false'
+jobtracker_failover_connect_retries: 3
+jobtracker_auto_failover_enabled: 'true'
+jobtracker_zkfc_port: 8018
+# handler count. Recommended: ln(number of datanodes) * 20
+jobtracker_handler_count: 50
+
+
+# We have 12 nodes and 6 CPUs per node
+# reduce tasks forumla: 0.95 or 1.75 * (nodes * mapred.tasktracker.tasks.maximum)
+# Cloudera defaults: 2 mappers, 2 reducers max
+# ------
+# tested. too much stress on the hardware
+#mapred_tasktracker_map_tasks_maximum: 6
+#mapred_tasktracker_reduce_tasks_maximum: 68
+#mapred_reduce_child_java_opts: "-Xmx2G"
+# ------
+mapred_tasktracker_http_port: 50060
+mapred_tasktracker_map_tasks_maximum: 2
+mapred_tasktracker_reduce_tasks_maximum: 4
+mapred_use_fair_scheduler: True
+mapred_fair_scheduler_pools:
+  - { name: 'solr', map: '12', reduce: '18' }
+mapred_fair_scheduler_use_poolnameproperty: True
+mapred_fair_scheduler_poolnameproperty: user.name
+mapred_fair_scheduler_undecl_pools: True
+mapred_fair_scheduler_preemption: False
+mapred_fair_scheduler_assignmultiple: True
+mapred_fair_scheduler_allocation_file: '{{ hadoop_conf_dir }}/fair-scheduler.xml'
+# reducer parallel copies. Recommended: ln(number of datanodes) * 4
+# with a minimum of 10
+mapred_reduce_parallel_copies: 10
+# Recommended: 80
+mapred_tasktracker_http_threads: 80
+# Default: 0.05. Recommended: 0.8. Used by the jobtracker
+mapred_reduce_slowstart_maps: 0.9
+# Default: 100. We could increase it
+mapred_tasktracker_io_sort_mb: 256
+mapred_io_sort_factor: 25
+mapreduce_job_counters_max: 5000
+mapred_userlog_retain_hours: 24
+mapred_jt_completeuserjobs_max: 150
+mapred_jt_persist_jobstatus_hours: 4320
+mapred_user_jobconf_limit: 5242880
+mapred_jt_retirejob_interval: 86400000
+mapreduce_jt_split_metainfo_maxsize: 10000000
+mapred_queue_names: default
+#
+mapred_staging_root_dir: /user
+mapred_old_staging_root_dir: /home
+mapred_local_dir: /data/mapred/local
+# Java parameters
+mapred_child_java_opts: "-Xmx3092M"
+mapred_map_child_java_opts: "-Xmx3092M"
+#mapred_reduce_child_java_opts: "-Xmx1512M"
+mapred_reduce_child_java_opts: "-Xmx2048M"
+
+#
+# HBASE
+#
+# Raw formula to calculate the needed regionserver heap size:
+# regions.hbase.hregion.max.filesize /
+# hbase.hregion.memstore.flush.size *
+# dfs.replication * 
+# hbase.regionserver.global.memstore.lowerLimit
+# See: http://hadoop-hbase.blogspot.it/2013/01/hbase-region-server-memory-sizing.html
+#
+hbase_user: hbase
+hbase_conf_dir: '/etc/hbase/conf.{{ hadoop_cluster_name|lower }}'
+# HBASE heap size
+hbase_master_heap_size: 5120
+hbase_thrift_heap_size: 1024
+hbase_regionserver_heap_size: 4500
+hbase_master_java_opts: '-Xmx{{ hbase_master_heap_size }}M'
+hbase_regionserver_maxdirectmemory_size: "-XX:MaxDirectMemorySize=2G"
+hbase_regionserver_java_opts: '-Xmx{{ hbase_regionserver_heap_size }}M'
+hbase_thrift_java_opts: '-Xmx{{ hbase_thrift_heap_size }}M'
+hbase_zookeeper_java_opts: -Xmx1G
+hbase_thrift_port: 9090
+hbase_thrift_jmx_port: 9591
+# hbase zookeeper timeout
+hbase_zookeeper_timeout: '{{ zookeeper_max_timeout }}'
+# rpc timeout needs to be greater than lease period
+# See http://hbase.apache.org/book/trouble.client.html
+hbase_rpc_timeout: 600000
+hbase_lease_period: 400000
+hbase_open_files: 65536
+hbase_master_rpc_port: 60000
+hbase_master_http_port: 60010
+hbase_regionserver_http_port: 60030
+hbase_regionserver_http_1_port: 60020
+# This is controversial. When set to 'true' hdfs balances
+# each table without paying attention to the global balancing
+hbase_loadbalance_bytable: True
+# Default is 0.2
+hbase_regions_slop: 0.15
+# Default is 10. The recommendation is to keep it low when the payload per request grows
+# We have mixed payloads.
+hbase_handler_count: 12
+# Default was 256M. It's 10737418240 (10GB) since 0.94
+# The recommendation is to have it big to decrease the total number of regions
+# 1288490188 is circa 1.2GB
+hbase_hregion_max_file_size: 1288490188
+hbase_hregion_memstore_mslab_enabled: True
+# The default 134217728, 128MB. We set it to 256M
+hbase_hregion_memstore_flush_size: 268435456
+# The default is 0.4
+hbase_regionserver_global_memstore_lowerLimit: 0.35
+#
+hbase_regionserver_global_memstore_upperLimit: 0.45
+hbase_hregion_memstore_block_multiplier: 3
+# HBASE thrift server
+hbase_thrift_server_1: '{{ hbase_master_1_hostname }}'
+hbase_thrift_server_2: '{{ hbase_master_2_hostname }}'
+
+#
+# nginx uses as reverse proxy to all the web interfaces
+#
+nginx_use_ldap_pam_auth: True
+nginx_pam_svc_name: nginx
+nginx_ldap_uri: '{{ hadoop_ldap_uri }}'
+nginx_ldap_base_dn: '{{ hadoop_ldap_base_dn }}'
+
+portal_nginx_conf: management-portal
+portal_pam_svc_name: '{{ nginx_pam_svc_name }}'
+portal_title: "NeMIS Hadoop Cluster"
+portal_web_root: /usr/share/nginx/www
+
+#
+# OOZIE and HIVE DB data
+#
+oozie_db_type: postgresql
+oozie_db_name: oozie
+oozie_db_user: oozie
+oozie_db_host: db.t.hadoop.research-infrastructures.eu
+hive_db_type: '{{ oozie_db_type }}'
+hive_db_name: hive
+hive_db_user: hive
+hive_db_host: '{{ oozie_db_host }}'
+hive_metastore_db_type: '{{ oozie_db_type }}'
+hive_metastore_db_name: metastore
+hive_metastore_db_user: metastore
+hive_metastore_db_host: '{{ oozie_db_host }}'
+hue_db_type: '{{ oozie_db_type }}'
+hue_db_name: hue
+hue_db_user: hue
+hue_db_host: '{{ oozie_db_host }}'
+hue_http_port: 8888
+oozie_ip: 146.48.123.66
+hive_ip: '{{ oozie_ip }}'
+hue_ip: '{{ oozie_ip }}'
+
+# Iptables
+
+other_networks:
+# Marek
+  icm_pl: 213.135.59.0/24
+# eri.katsari
+  icm_pl_1: 195.134.66.216/32
+# Antonis addresses, need to reach hdfs and zookeeper (ARC). And Glykeria Katsari
+  ilsp_gr: [ '194.177.192.226/32', '194.177.192.223/32', '195.134.66.96/32', '194.177.192.218/32', '194.177.192.231/32', '195.134.66.216/32', '195.134.66.145/32', '194.177.192.118/32', '195.134.66.244' ]
+# Needed by marek. It's the IIS cluster gateway.
+  iis_pl_1: 213.135.60.74/32
+# Jochen
+  icm_1: 129.70.43.118/32
+
+monitoring_group_name: hadoop-cluster
+
+nagios_local_plugins_dir: /usr/lib/nagios/plugins/hadoop
+nagios_common_lib: check_library.sh
+nagios_monitoring_dir: '/etc/nagios3/objects/{{ monitoring_group_name }}'
+nagios_root_disk: /
+nagios_check_disk_w: 10%
+nagios_check_disk_c: 7%
+nagios_service_contacts:
+  - andrea.dellamico
+  - claudio.atzori
+nagios_contactgroup: hadoop-managers
+nagios_monitoring_server_ip: 146.48.123.23
+
+iptables_default_policy: REJECT
+
--- a/group_vars/all/ganglia.yml
+++ b/group_vars/all/ganglia.yml
@ -0,0 +1,27 @@
+---
+# Ganglia
+ganglia_unicast_mode: False
+
+ganglia_gmond_jobtracker_cluster: "Openaire+ Hadoop Cluster - Jobtrackers"
+ganglia_gmond_namenode_cluster: "Openaire+ Hadoop Cluster - HDFS namenodes"
+ganglia_gmond_hbmaster_cluster: "Openaire+ Hadoop Cluster - HBASE masters"
+ganglia_gmond_workers_cluster: "Openaire+ Hadoop Cluster - Worker nodes"
+
+ganglia_gmond_cluster: '{{ ganglia_gmond_workers_cluster }}'
+
+#
+# To play nice with iptables
+ganglia_gmond_mcast_addr: 239.2.11.0
+ganglia_gmond_cluster_port: "8640:8660"
+
+# jmx ports
+hadoop_namenode_jmx_port: 10103
+hadoop_secondary_namenode_jmx_port: 10104
+hadoop_datanode_jmx_port: 10105
+hadoop_balancer_jmx_port: 10106
+hadoop_jobtracker_jmx_port: 10107
+hbase_master_jmx_port: 10101
+hbase_regionserver_jmx_port: 10102
+hbase_thrift_jmx_port: 10109
+hbase_zookeeper_jmx_port: 10110
+zookeeper_jmx_port: 10108
--- a/group_vars/all/nagios.yml
+++ b/group_vars/all/nagios.yml
@ -0,0 +1,32 @@
+---
+# jmx ports
+hadoop_namenode_jmx_port: 10103
+hadoop_secondary_namenode_jmx_port: 10104
+hadoop_datanode_jmx_port: 10105
+hadoop_balancer_jmx_port: 10106
+hadoop_jobtracker_jmx_port: 10107
+hbase_master_jmx_port: 10101
+hbase_regionserver_jmx_port: 10102
+hbase_thrift_jmx_port: 10109
+hbase_zookeeper_jmx_port: 10110
+zookeeper_jmx_port: 10108
+#
+# Used by nagios
+hadoop_plugins_dir: /usr/lib/nagios/plugins/hadoop
+root_disk: /dev/xvda2
+data_disk: /dev/xvda3
+root_disk_warn: 20%
+disk_warn: '{{ root_disk_warn }}'
+root_disk_crit: 10%
+disk_crit: '{{ root_disk_crit }}'
+data_disk_warn: 7%
+data_disk_crit: 4%
+
+hbase_check_user: hbasecheck
+hbase_check_timeout: 560
+hdfs_warn: 90
+hdfs_crit: 95
+
+nagios_proclist_red: '{{ redprocs }}'
+nagios_proclist_yellow: '{{ yellowprocs }}'
+nagios_nrpe_port: 5666
--- a/group_vars/all/users.yml
+++ b/group_vars/all/users.yml
@ -0,0 +1,23 @@
+---
+#
+# The OOZIE users are a subset of the hdfs users.
+#
+hadoop_users:
+  - { login: 'marek.horst', name: "Marek Horst", ssh_key: '{{ marek_horst }}', shell: '/bin/bash' }
+  - { login: 'claudio.atzori', name: "Claudio Atzori", ssh_key: '{{ claudio_atzori }}', shell: '/bin/bash' }
+  - { login: 'sandro.labruzzo', name: "Sandro Labruzzo", ssh_key: '{{ sandro_labruzzo }}', shell: '/bin/bash' }
+  - { login: 'michele.artini', name: "Michele Artini", ssh_key: '{{ michele_artini }}', shell: '/bin/bash' }
+  - { login: 'alessia.bardi', name: "Alessia Bardi", ssh_key: '{{ alessia_bardi }}', shell: '/bin/bash' }
+  - { login: 'andrea.mannocci', name: "Andrea Mannocci", ssh_key: '{{ andrea_mannocci }}', shell: '/bin/bash' }
+  - { login: 'andrea.dellamico', name: "Andrea Dell'Amico", ssh_key: '{{ andrea_dellamico }}', shell: '/bin/bash' }
+  - { login: 'giorgos.alexiou', name: "Giorgos Alexiou", ssh_key: '{{ giorgos_alexiou }}', shell: '/bin/bash' }
+  - { login: 'antonis.lempesis', name: "Antonis Lempesis", ssh_key: '{{ antonis_lempesis }}', shell: '/bin/bash' }
+  - { login: 'dnet' }
+  - { login: 'claudio' }
+  - { login: 'michele' }
+  - { login: 'sandro' }
+  - { login: 'alessia' }
+  - { login: 'andrea' }  
+  - { login: 'adellam' }  
+  - { login: 'hbasecheck' }
+
--- a/group_vars/all/vault-db-pwd.yml
+++ b/group_vars/all/vault-db-pwd.yml
@ -0,0 +1,6 @@
+$ANSIBLE_VAULT;1.1;AES256
+63613435386665626236306331353063626137386531346461646463623436376232303461653436
+3934313830326366373364396630356630623935633230360a646439346530363762363966643534
+30373331666537666266353666333632616465666331383231356661633838633432656536653233
+3738636134393763650a623637326339653932323563346336366433333732373733656532353137
+36306364343430303535373961646632656535666162363862613036356461343865
--- a/group_vars/all/vault-jmx-pwd.yml
+++ b/group_vars/all/vault-jmx-pwd.yml
@ -0,0 +1,10 @@
+$ANSIBLE_VAULT;1.1;AES256
+39646636653439616665643935326563653435646462306639646266376232633436393834643933
+3364336430396530646637383438663037366362663135320a373065343862653035653838323739
+61646135626431643330363963666433303737663464396663353632646339653562666162393034
+3363383435346364310a356439323431343336366635306461613462663436326431383266366231
+39636262313038366135316331343939373064356336356239653631633435613736306131656363
+37613864353931396435353431633765623330663266646666643632626666643436623939303538
+34343461383338663466303131663336326230666532326335373862636437343739336136616435
+35653763353436383537633932316434303539373237336161303165353962356336666161323765
+6336
--- a/group_vars/db/db.yml
+++ b/group_vars/db/db.yml
@ -0,0 +1,18 @@
+---
+psql_version: 9.1
+psql_db_host: localhost
+psql_db_data:
+  - { name: '{{ oozie_db_name }}', encoding: 'UTF8', user: '{{ oozie_db_user }}', roles: 'CREATEDB,NOSUPERUSER', pwd: '{{ psql_db_pwd }}', allowed_hosts: [ '{{ oozie_ip }}/32' ] }
+  - { name: '{{ hue_db_name }}', encoding: 'UTF8', user: '{{ hue_db_user }}', roles: 'CREATEDB,NOSUPERUSER', pwd: '{{ psql_db_pwd }}', allowed_hosts: [ '{{ hue_ip }}/32' ] }
+  - { name: '{{ hive_metastore_db_name }}', encoding: 'UTF8', user: '{{ hive_metastore_db_user }}', roles: 'CREATEDB,NOSUPERUSER', pwd: '{{ psql_db_pwd }}', allowed_hosts: [ '{{ hive_ip }}/32' ] }
+psql_listen_on_ext_int: True
+
+pg_backup_pgdump_bin: /usr/lib/postgresql/9.1/bin/pg_dump
+pg_backup_retain_copies: 10
+pg_backup_build_db_list: "no"
+pg_backup_db_list: "'{{ oozie_db_name }}' '{{ hue_db_name }}' '{{ hive_metastore_db_name }}'"
+pg_backup_destdir: /data/pgsql/backups
+pg_backup_logfile: '{{ pg_backup_logdir }}/postgresql-backup.log'
+pg_backup_use_nagios: "yes"
+
+user_ssh_key: [ '{{ claudio_atzori }}' ]
--- a/group_vars/hadoop_cluster/hadoop-cluster.yml
+++ b/group_vars/hadoop_cluster/hadoop-cluster.yml
@ -0,0 +1,2 @@
+---
+user_ssh_key: [ '{{ claudio_atzori }}', '{{ hadoop_test_cluster }}', '{{ sandro_labruzzo }}' ]
--- a/group_vars/hadoop_masters/logstash.yml
+++ b/group_vars/hadoop_masters/logstash.yml
@ -0,0 +1,18 @@
+---
+#
+# The hadoop logs are now sent to logstash directly by log4j
+# - adellam 2015-02-04
+#
+# the log_state_file names must be unique when using the old rsyslog syntax. In the new one
+# they are not used
+# rsys_logfiles:
+#   - { logfile: '/var/log/hadoop-0.20-mapreduce/hadoop-{{ hadoop_cluster_name }}-jobtrackerha-{{ ansible_hostname }}.log', log_tag: 'hadoop-jobtracker', log_state_file: 'hadoop-jobtracker'}
+#   - { logfile: '/var/log/hadoop-0.20-mapreduce/hadoop-{{ hadoop_cluster_name }}-mrzkfc-{{ ansible_hostname }}.log', log_tag: 'hadoop-jt-mrzkfc', log_state_file: 'hadoop-jt-mrzkfc'}
+#   - { logfile: '/var/log/hadoop-0.20-mapreduce/mapred-audit.log', log_tag: 'hadoop-mapred-audit', log_state_file: 'hadoop-mapred-audit'}
+#   - { logfile: '/var/log/hadoop-hdfs/hadoop-{{ hadoop_cluster_name }}-namenode-{{ ansible_hostname }}.log', log_tag: 'hadoop-hdfs-namenode', log_state_file: 'hadoop-hdfs-namenode'}
+#   - { logfile: '/var/log/hadoop-hdfs/hadoop-{{ hadoop_cluster_name }}-zkfc-{{ ansible_hostname }}.log', log_tag: 'hadoop-hdfs-zkfc', log_state_file: 'hadoop-hdfs-zkfc'}
+#   - { logfile: '/var/log/hadoop-hdfs/hadoop-{{ hadoop_cluster_name }}-journalnode-{{ ansible_hostname }}.log', log_tag: 'hadoop-hdfs-journal', log_state_file: 'hadoop-hdfs-journal'}
+#   - { logfile: '/var/log/hbase/hbase.log', log_tag: 'hbase-master-log', log_state_file: 'hbase-master-log'}
+#   - { logfile: '/var/log/hbase/hbase-hbase-master-{{ ansible_hostname }}.log', log_tag: 'hbase-master-ha', log_state_file: 'hbase-master-ha'}
+#   - { logfile: '/var/log/hbase/hbase-hbase-thrift-{{ ansible_hostname }}.log', log_tag: 'hbase-thrift', log_state_file: 'hbase-thrift'}
+#   - { logfile: '{{ zookeeper_log_dir }}/zookeeper.log', log_tag: 'hadoop-zookeeper', log_state_file: 'hadoop-zookeeper'}
--- a/group_vars/hadoop_worker_nodes/ganglia.yml
+++ b/group_vars/hadoop_worker_nodes/ganglia.yml
@ -0,0 +1,6 @@
+---
+# Ganglia gmond port
+ganglia_gmond_cluster: '{{ ganglia_gmond_workers_cluster }}'
+ganglia_gmond_cluster_port: '{{ ganglia_gmond_hdfs_datanodes_port }}' 
+ganglia_gmond_mcast_address: '{{ ganglia_gmond_workers_mcast_addr }}'
+
--- a/group_vars/hadoop_worker_nodes/iptables.yml
+++ b/group_vars/hadoop_worker_nodes/iptables.yml
@ -0,0 +1,10 @@
+---
+iptables:
+  tcp_rules: True
+  tcp:
+    - { port: '{{ hdfs_datanode_http_port }}', allowed_hosts: [ '{{ network.isti }}', '{{ network.nmis }}', '{{ network.eduroam }}', '{{ other_networks.ilsp_gr }}' ] }
+    - { port: '{{ hdfs_datanode_ipc_port }}', allowed_hosts: [ '{{ network.isti }}', '{{ network.nmis }}', '{{ network.eduroam }}', '{{ other_networks.ilsp_gr }}' ] }
+    - { port: '{{ hdfs_datanode_rpc_port }}', allowed_hosts: [ '{{ network.isti }}', '{{ network.nmis }}', '{{ network.eduroam }}', '{{ other_networks.ilsp_gr }}', '{{ other_networks.iis_pl_1 }}', '{{ other_networks.icm_1 }}' ] }
+    - { port: '{{ mapred_tasktracker_http_port }}', allowed_hosts: [ '{{ network.isti }}', '{{ network.nmis }}', '{{ network.eduroam }}' ] }
+    - { port: '{{ hbase_regionserver_http_port }}', allowed_hosts: [ '{{ network.isti }}', '{{ network.nmis }}', '{{ network.eduroam }}' ] }
+    - { port: '{{ hbase_regionserver_http_1_port }}', allowed_hosts: [ '{{ network.isti }}', '{{ network.nmis }}', '{{ network.eduroam }}', '{{ other_networks.ilsp_gr }}', '{{ other_networks.iis_pl_1 }}', '{{ other_networks.icm_1 }}' ] }
--- a/group_vars/hadoop_worker_nodes/logstash.yml
+++ b/group_vars/hadoop_worker_nodes/logstash.yml
@ -0,0 +1,10 @@
+---
+#
+# The hadoop logs are now sent to logstash directly by log4j
+# - adellam 2015-02-04
+#
+# IMPORTANT: the log_state_file names must be unique
+# rsys_logfiles:
+#   - { logfile: '/var/log/hadoop-0.20-mapreduce/hadoop-{{ hadoop_cluster_name }}-tasktracker-{{ ansible_hostname }}.log', log_tag: 'hadoop-tasktracker', log_state_file: 'hadoop-tasktracker'}
+#   - { logfile: '/var/log/hadoop-hdfs/hadoop-{{ hadoop_cluster_name }}-datanode-{{ ansible_hostname }}.log', log_tag: 'hadoop-hdfs-datanode', log_state_file: 'hadoop-hdfs-datanode'}
+#   - { logfile: '/var/log/hbase/hbase-hbase-regionserver-{{ ansible_hostname }}.log', log_tag: 'hbase-regionserver', log_state_file: 'hbase-regionserver'}
--- a/group_vars/hbase_masters/ganglia.yml
+++ b/group_vars/hbase_masters/ganglia.yml
@ -0,0 +1,6 @@
+---
+# Ganglia gmond port
+ganglia_gmond_cluster: '{{ ganglia_gmond_hbmaster_cluster }}'
+ganglia_gmond_cluster_port: '{{ ganglia_gmond_hbmaster_port }}'
+ganglia_gmond_mcast_address: '{{ ganglia_gmond_hbmaster_mcast_addr }}'
+
--- a/group_vars/hbase_masters/iptables.yml
+++ b/group_vars/hbase_masters/iptables.yml
@ -0,0 +1,12 @@
+---
+iptables:
+  tcp_rules: True
+  tcp:
+    - { port: '{{ hbase_master_rpc_port }}', allowed_hosts: [ '{{ network.isti }}', '{{ network.nmis }}', '{{ network.eduroam }}', '{{ other_networks.ilsp_gr }}', '{{ other_networks.iis_pl_1 }}', '{{ other_networks.icm_1 }}' ] }
+    - { port: '{{ hbase_master_http_port }}', allowed_hosts: [ '{{ network.isti }}', '{{ network.nmis }}', '{{ network.eduroam }}', '{{ other_networks.ilsp_gr }}', '{{ other_networks.iis_pl_1 }}', '{{ other_networks.icm_1 }}' ] }
+    - { port: '{{ hbase_thrift_port }}', allowed_hosts: [ '{{ network.isti }}', '{{ network.nmis }}', '{{ network.eduroam }}' ] }
+    - { port: '{{ hdfs_journal_port }}', allowed_hosts: [ '{{ network.isti }}', '{{ network.nmis }}', '{{ network.eduroam }}' ] }
+    - { port: '{{ hdfs_journal_http_port }}', allowed_hosts: [ '{{ network.isti }}', '{{ network.nmis }}', '{{ network.eduroam }}' ] }
+    - { port: '{{ zookeeper_leader_port }}', allowed_hosts: [ '{{ network.isti }}', '{{ network.nmis }}', '{{ network.eduroam }}' ] }
+    - { port: '{{ zookeeper_quorum_port }}', allowed_hosts: [ '{{ network.isti }}', '{{ network.nmis }}', '{{ network.eduroam }}' ] }
+    - { port: '{{ zookeeper_client_port }}', allowed_hosts: [ '{{ network.isti }}', '{{ network.nmis }}', '{{ network.eduroam }}', '{{ other_networks.ilsp_gr }}', '{{ other_networks.iis_pl_1 }}', '{{ other_networks.icm_1 }}' ] }
--- a/group_vars/hdfs_masters/ganglia.yml
+++ b/group_vars/hdfs_masters/ganglia.yml
@ -0,0 +1,6 @@
+---
+# Ganglia gmond port
+ganglia_gmond_cluster: '{{ ganglia_gmond_namenode_cluster }}'
+ganglia_gmond_cluster_port: '{{ ganglia_gmond_namenode_port }}' 
+ganglia_gmond_mcast_address: '{{ ganglia_gmond_namenode_mcast_addr }}'
+
--- a/group_vars/hdfs_masters/iptables.yml
+++ b/group_vars/hdfs_masters/iptables.yml
@ -0,0 +1,13 @@
+---
+iptables:
+  tcp_rules: True
+  tcp:
+    - { port: '{{ hdfs_nn_rpc_port }}', allowed_hosts: [ '{{ network.isti }}', '{{ network.nmis }}', '{{ network.eduroam }}', '{{ other_networks.ilsp_gr }}', '{{ other_networks.iis_pl_1 }}', '{{ other_networks.icm_1 }}' ] }
+    - { port: '{{ hdfs_nn_http_port }}', allowed_hosts: [ '{{ network.isti }}', '{{ network.nmis }}', '{{ network.eduroam }}', '{{ other_networks.ilsp_gr }}', '{{ other_networks.iis_pl_1 }}', '{{ other_networks.icm_1 }}' ] }
+    - { port: '{{ hdfs_nn_client_port }}', allowed_hosts: [ '{{ network.isti }}', '{{ network.nmis }}', '{{ network.eduroam }}' ] }
+    - { port: '{{ hdfs_zkfc_port }}', allowed_hosts: [ '{{ network.isti }}', '{{ network.nmis }}', '{{ network.eduroam }}' ] }
+    - { port: '{{ hdfs_journal_port }}', allowed_hosts: [ '{{ network.isti }}', '{{ network.nmis }}', '{{ network.eduroam }}' ] }
+    - { port: '{{ hdfs_journal_http_port }}', allowed_hosts: [ '{{ network.isti }}', '{{ network.nmis }}', '{{ network.eduroam }}' ] }
+    - { port: '{{ zookeeper_leader_port }}', allowed_hosts: [ '{{ network.isti }}', '{{ network.nmis }}', '{{ network.eduroam }}' ] }
+    - { port: '{{ zookeeper_quorum_port }}', allowed_hosts: [ '{{ network.isti }}', '{{ network.nmis }}', '{{ network.eduroam }}' ] }
+    - { port: '{{ zookeeper_client_port }}', allowed_hosts: [ '{{ network.isti }}', '{{ network.nmis }}', '{{ network.eduroam }}', '{{ other_networks.ilsp_gr }}', '{{ other_networks.iis_pl_1 }}', '{{ other_networks.icm_1 }}' ] }
--- a/group_vars/jt_masters/ganglia.yml
+++ b/group_vars/jt_masters/ganglia.yml
@ -0,0 +1,6 @@
+---
+# Ganglia gmond port
+ganglia_gmond_cluster: '{{ ganglia_gmond_jobtracker_cluster }}'
+ganglia_gmond_cluster_port: '{{ ganglia_gmond_jobtracker_port }}'
+ganglia_gmond_mcast_address: '{{ ganglia_gmond_jobtracker_mcast_addr }}'
+
--- a/group_vars/jt_masters/iptables.yml
+++ b/group_vars/jt_masters/iptables.yml
@ -0,0 +1,22 @@
+---
+iptables:
+  tcp_rules: True
+  tcp:
+    - { port: '80:95' }
+    - { port: '8100:8150' }
+    - { port: '8200:8250' }
+    - { port: '8300:8350' }
+    - { port: '8400:8450' }
+    - { port: '{{ jobtracker_cluster_id1_rpc_port }}', allowed_hosts: [ '{{ network.isti }}', '{{ network.nmis }}', '{{ network.eduroam }}', '{{ other_networks.icm_1 }}' ] }
+    - { port: '{{ jobtracker_cluster_id2_rpc_port }}', allowed_hosts: [ '{{ network.isti }}', '{{ network.nmis }}', '{{ network.eduroam }}', '{{ other_networks.icm_1 }}' ] }
+    - { port: '{{ jobtracker_cluster_id1_ha_rpc_port }}', allowed_hosts: [ '{{ network.isti }}', '{{ network.nmis }}', '{{ network.eduroam }}' ] }
+    - { port: '{{ jobtracker_cluster_id2_ha_rpc_port }}', allowed_hosts: [ '{{ network.isti }}', '{{ network.nmis }}', '{{ network.eduroam }}' ] }
+    - { port: '{{ jobtracker_cluster_id1_http_port }}', allowed_hosts: [ '{{ network.isti }}', '{{ network.nmis }}', '{{ network.eduroam }}', '{{ other_networks.ilsp_gr }}', '{{ other_networks.icm_1 }}' ] }
+    - { port: '{{ jobtracker_cluster_id2_http_port }}', allowed_hosts: [ '{{ network.isti }}', '{{ network.nmis }}', '{{ network.eduroam }}', '{{ other_networks.ilsp_gr }}', '{{ other_networks.icm_1 }}' ] }
+    - { port: '{{ jobtracker_http_port }}', allowed_hosts: [ '{{ network.isti }}', '{{ network.nmis }}', '{{ network.eduroam }}' ] }
+    - { port: '{{ jobtracker_zkfc_port }}', allowed_hosts: [ '{{ network.isti }}', '{{ network.nmis }}', '{{ network.eduroam }}' ] }
+    - { port: '{{ hdfs_journal_port }}', allowed_hosts: [ '{{ network.isti }}', '{{ network.nmis }}', '{{ network.eduroam }}' ] }
+    - { port: '{{ hdfs_journal_http_port }}', allowed_hosts: [ '{{ network.isti }}', '{{ network.nmis }}', '{{ network.eduroam }}' ] }
+    - { port: '{{ zookeeper_leader_port }}', allowed_hosts: [ '{{ network.isti }}', '{{ network.nmis }}', '{{ network.eduroam }}' ] }
+    - { port: '{{ zookeeper_quorum_port }}', allowed_hosts: [ '{{ network.isti }}', '{{ network.nmis }}', '{{ network.eduroam }}' ] }
+    - { port: '{{ zookeeper_client_port }}', allowed_hosts: [ '{{ network.isti }}', '{{ network.nmis }}', '{{ network.eduroam }}', '{{ other_networks.ilsp_gr }}', '{{ other_networks.iis_pl_1 }}', '{{ other_networks.icm_1 }}' ] }
--- a/group_vars/logstash/logstash.yml
+++ b/group_vars/logstash/logstash.yml
@ -0,0 +1,52 @@
+---
+user_ssh_key: [ '{{ claudio_atzori }}' ]
+
+
+# logstash
+logstash_collector_host: logstash.t.hadoop.research-infrastructures.eu
+logstash_collector_listen_port: 5544
+logstash_version: 1.3.3
+logstash_file: 'logstash-{{ logstash_version }}-flatjar.jar'
+logstash_url: 'download.elasticsearch.org/logstash/logstash/{{ logstash_file }}'
+logstash_install_dir: /opt/logstash
+logstash_conf_dir: '{{ logstash_install_dir }}/etc'
+logstash_lib_dir: '{{ logstash_install_dir }}/share'
+logstash_log_dir: /var/log/logstash
+logstash_user: logstash
+logstash_indexer_jvm_opts: "-Xms2048m -Xmx2048m"
+
+kibana_nginx_conf: kibana
+kinaba_nginx_root: /var/www/kibana/src
+kibana_virtual_host: logs.t.hadoop.research-infrastructures.eu
+
+elasticsearch_user: elasticsearch
+elasticsearch_group: elasticsearch
+elasticsearch_version: 1.0.0
+elasticsearch_http_port: 9200
+elasticsearch_transport_tcp_port: 9300
+elasticsearch_download_path: download.elasticsearch.org/elasticsearch/elasticsearch
+elasticsearch_cluster: hadoop-logstash
+elasticsearch_node_name: logstash
+elasticsearch_node_master: "true"
+elasticsearch_node_data: "true"
+elasticsearch_max_local_storage_nodes: 1
+elasticsearch_log_dir: /var/log/elasticsearch
+elasticsearch_heap_size: 5
+elasticsearch_host: localhost
+elasticsearch_curator_close_after: 10
+elasticsearch_curator_retain_days: 20
+elasticsearch_curator_optimize_days: 10
+elasticsearch_curator_bloom_days: 7
+elasticsearch_curator_timeout: 1200
+elasticsearch_curator_manage_marvel: True
+elasticsearch_disable_dynamic_scripts: True
+
+# We use the nginx defaults here
+nginx_use_ldap_pam_auth: True
+
+iptables:
+  tcp_rules: True
+  tcp:
+    - { port: '{{ logstash.collector_listen_port }}', allowed_hosts: [ '{{ network.nmis }}' ] }
+    - { port: '{{ elasticsearch.http_port }}', allowed_hosts: [ '{{ ansible_fqdn }}', '{{ network.isti }}', '{{ network.nmis }}', '{{ network.eduroam }}' ] }
+    - { port: '80', allowed_hosts: [ '{{ network.isti }}', '{{ network.nmis }}', '{{ network.eduroam }}' ] }
--- a/group_vars/other_services/other-services.yml
+++ b/group_vars/other_services/other-services.yml
@ -0,0 +1,43 @@
+---
+user_ssh_key: [ '{{ claudio_atzori }}', '{{ michele_artini }}' ]
+
+iptables:
+  tcp_rules: True
+  tcp:
+    - { port: '11000', allowed_hosts: [ '{{ network.isti }}', '{{ network.nmis }}', '{{ network.eduroam }}', '{{ other_networks.icm_pl }}', '{{ other_networks.icm_pl_1 }}' ] }
+    - { port: '10000', allowed_hosts: [ '{{ network.isti }}', '{{ network.nmis }}', '{{ network.eduroam }}', '{{ other_networks.icm_pl }}', '{{ other_networks.icm_pl_1 }}' ] }
+    - { port: '9083', allowed_hosts: [ '{{ network.isti }}', '{{ network.nmis }}', '{{ network.eduroam }}', '{{ other_networks.icm_pl }}', '{{ other_networks.icm_pl_1 }}' ] }
+    - { port: '8888', allowed_hosts: [ '{{ network.isti }}', '{{ network.nmis }}', '{{ network.eduroam }}', '{{ other_networks.icm_pl }}', '{{ other_networks.icm_pl_1 }}', '0.0.0.0/0' ] }
+
+oozie:
+  host: 'oozie.{{ dns_domain }}'
+  conf_dir: /etc/oozie/conf
+  user: oozie
+  catalina_work_dir: /usr/lib/oozie/oozie-server-0.20/work
+  http_port: 11000
+
+#
+# HIVE
+#
+hive:
+  host: 'hive.{{ dns_domain }}'
+  conf_dir: /etc/hive/conf
+  user: hive
+  metastore_port: 9083
+  server2_http_port: 10000
+  setugi: True
+
+#
+# HUE
+#
+hue:
+  user: hue
+  group: hue
+  host: 'hue.{{ dns_domain }}'
+  http_port: 8888
+  conf_dir: /etc/hue
+  hive_interface: hiveserver2
+  exec_path: /usr/share/hue/build/env/bin/hue
+  encoding: 'utf-8'
+  setuid_path: /usr/share/hue/apps/shell/src/shell/build/setuid
+
--- a/group_vars/other_services/vault-other-services.yml
+++ b/group_vars/other_services/vault-other-services.yml
@ -0,0 +1,8 @@
+$ANSIBLE_VAULT;1.1;AES256
+35656164616131366466393935373064383333633237616435353030613234323463393363643961
+6366343466396563666662396332666661636462313861630a376235623035633530656238623464
+37636231343837363431396564363632343466306166343365356137646266656637313534353834
+3561323334346135300a643731653463353564356332376162613864336539376530333534363032
+36643532626433393939353030653762643636353331326565666164343761393533623461383165
+33313736346537373364646332653538343034376639626335393065346637623664303264343237
+326630336139303531346238383733633335
--- a/hadoop-common.yml
+++ b/hadoop-common.yml
@ -0,0 +1,17 @@
+---
+- hosts: hadoop_worker_nodes:hadoop_masters
+  remote_user: root
+  max_fail_percentage: 10
+  serial: "25%"
+
+#  vars_files:
+#    - ../library/vars/isti-global.yml
+  roles:
+    - common
+    - cdh_common
+    - chkconfig
+    - hadoop_common
+    - hadoop_config
+    - hadoop_zookeeper
+    - hadoop_zookeeper_config
+
--- a/inventory/hosts.production
+++ b/inventory/hosts.production
@ -0,0 +1,10 @@
+[zookeeper_cluster]
+quorum0.t.hadoop.research-infrastructures.eu zoo_id=0
+quorum1.t.hadoop.research-infrastructures.eu zoo_id=1
+quorum2.t.hadoop.research-infrastructures.eu zoo_id=2
+quorum3.t.hadoop.research-infrastructures.eu zoo_id=3
+quorum4.t.hadoop.research-infrastructures.eu zoo_id=4
+
+[monitoring]
+monitoring.research-infrastructures.eu
+
--- a/nagios.yml
+++ b/nagios.yml
@ -0,0 +1,14 @@
+---
+- hosts: monitoring
+  user: root
+  vars_files:
+    - ../library/vars/isti-global.yml
+  roles:
+    - nagios-server
+
+- hosts: hadoop_cluster:other_services:db
+  user: root
+  vars_files:
+    - ../library/vars/isti-global.yml
+  roles:
+    - nagios-monitoring
--- a/roles/cdh_common/meta/main.yml
+++ b/roles/cdh_common/meta/main.yml
@ -0,0 +1,4 @@
+---
+dependencies:
+  - { role: ../library/roles/openjdk }
+  - role: '../../library/roles/ssh-keys'
--- a/roles/cdh_common/tasks/cdh-pkgs.yml
+++ b/roles/cdh_common/tasks/cdh-pkgs.yml
@ -0,0 +1,14 @@
+---
+- name: Install the common CDH hadoop packages
+  apt: pkg={{ item }} state={{ hadoop_pkg_state }}
+  with_items:
+    - hadoop
+    - hadoop-0.20-mapreduce
+    - hadoop-client
+    - hadoop-hdfs
+    - hadoop-mapreduce
+  tags:
+    - hadoop
+    - mapred
+    - hdfs
+
--- a/roles/cdh_common/tasks/cdh-setup.yml
+++ b/roles/cdh_common/tasks/cdh-setup.yml
@ -0,0 +1,23 @@
+---
+- name: Install the D-NET repository key
+  action: apt_key url=http://ppa.research-infrastructures.eu/dnet/keys/dnet-archive.asc
+  tags:
+    - hadoop
+    - cdh
+
+- name: Install the CDH repository key
+  action: apt_key url=http://archive.cloudera.com/cdh4/ubuntu/precise/amd64/cdh/archive.key
+  tags:
+    - hadoop
+    - cdh
+
+- apt_repository: repo='{{ item }}' update_cache=yes
+  with_items:
+    - deb http://ppa.research-infrastructures.eu/dnet lucid main
+    - deb http://ppa.research-infrastructures.eu/dnet unstable main
+    - deb [arch=amd64] http://archive.cloudera.com/cdh4/ubuntu/precise/amd64/cdh/ precise-cdh4 contrib
+    - deb [arch=amd64] http://archive.cloudera.com/gplextras/ubuntu/precise/amd64/gplextras precise-gplextras4 contrib
+  register: update_apt_cache
+  tags:
+    - hadoop
+    - cdh
--- a/roles/cdh_common/tasks/main.yml
+++ b/roles/cdh_common/tasks/main.yml
@ -0,0 +1,4 @@
+---
+- import_tasks: cdh-setup.yml
+- import_tasks: cdh-pkgs.yml
+# See meta/main.yml for the involved library playbooks
--- a/roles/common/meta/main.yml
+++ b/roles/common/meta/main.yml
@ -0,0 +1,4 @@
+---
+dependencies:
+  - role: '../../library/roles/ubuntu-deb-general'
+  - { role: '../../library/roles/iptables', when: iptables is defined }
--- a/roles/common/tasks/main.yml
+++ b/roles/common/tasks/main.yml
@ -0,0 +1,2 @@
+---
+# See meta/main.yml for the involved library playbooks
--- a/roles/ganglia/meta/main.yml
+++ b/roles/ganglia/meta/main.yml
@ -0,0 +1,3 @@
+---
+dependencies:
+  - role: '../../library/roles/ganglia'
--- a/roles/ganglia/tasks/main.yml
+++ b/roles/ganglia/tasks/main.yml
@ -0,0 +1,31 @@
+---
+# See meta/main.yml for the basic installation and configuration steps
+# The hadoop conf directory always exists
+- name: Distribute the ganglia hadoop metrics properties
+  template: src={{ item }}.j2 dest={{ hadoop_conf_dir }}/{{ item }} owner=root group=root mode=444
+  with_items:
+    - hadoop-metrics.properties
+    - hadoop-metrics2.properties
+  tags: [ 'monitoring', 'ganglia', 'ganglia_conf' ]
+
+- name: Check if the hbase conf directory exists
+  stat: path={{ hbase_conf_dir }}
+  register: check_hbase_confdir
+  tags: [ 'monitoring', 'ganglia', 'ganglia_conf'  ]
+
+- name: Distribute the ganglia hbase metrics properties
+  template: src={{ item }}.properties.j2 dest={{ hbase_conf_dir }}/{{ item }}-hbase.properties owner=root group=root mode=444
+  with_items:
+    - hadoop-metrics
+    - hadoop-metrics2
+  when: check_hbase_confdir.stat.exists
+  tags: [ 'monitoring', 'ganglia', 'ganglia_conf'  ]
+
+- name: Distribute the ganglia hbase metrics properties, maintain the old file name
+  file: src={{ hbase_conf_dir }}/{{ item }}-hbase.properties dest={{ hbase_conf_dir }}/{{ item }}.properties state=link force=yes
+  with_items:
+    - hadoop-metrics
+    - hadoop-metrics2
+  when: check_hbase_confdir.stat.exists
+  tags: [ 'monitoring', 'ganglia', 'ganglia_conf'  ]
+
--- a/roles/ganglia/templates/hadoop-metrics.properties.j2
+++ b/roles/ganglia/templates/hadoop-metrics.properties.j2
@ -0,0 +1,96 @@
+# Configuration of the "dfs" context for null
+dfs.class=org.apache.hadoop.metrics.spi.NullContext
+
+# Configuration of the "dfs" context for file
+#dfs.class=org.apache.hadoop.metrics.file.FileContext
+#dfs.period=10
+#dfs.fileName=/tmp/dfsmetrics.log
+
+# Configuration of the "dfs" context for ganglia
+# Pick one: Ganglia 3.0 (former) or Ganglia 3.1 (latter)
+# dfs.class=org.apache.hadoop.metrics.ganglia.GangliaContext
+# dfs.class=org.apache.hadoop.metrics.ganglia.GangliaContext31
+# dfs.period=10
+# dfs.servers=localhost:8649
+
+
+# Configuration of the "mapred" context for null
+mapred.class=org.apache.hadoop.metrics.spi.NullContext
+
+# Configuration of the "mapred" context for file
+#mapred.class=org.apache.hadoop.metrics.file.FileContext
+#mapred.period=10
+#mapred.fileName=/tmp/mrmetrics.log
+
+# Configuration of the "mapred" context for ganglia
+# Pick one: Ganglia 3.0 (former) or Ganglia 3.1 (latter)
+# mapred.class=org.apache.hadoop.metrics.ganglia.GangliaContext
+# mapred.class=org.apache.hadoop.metrics.ganglia.GangliaContext31
+# mapred.period=10
+# mapred.servers=localhost:8649
+
+
+# Configuration of the "jvm" context for null
+#jvm.class=org.apache.hadoop.metrics.spi.NullContext
+
+# Configuration of the "jvm" context for file
+#jvm.class=org.apache.hadoop.metrics.file.FileContext
+#jvm.period=10
+#jvm.fileName=/tmp/jvmmetrics.log
+
+# Configuration of the "jvm" context for ganglia
+# jvm.class=org.apache.hadoop.metrics.ganglia.GangliaContext
+# jvm.class=org.apache.hadoop.metrics.ganglia.GangliaContext31
+# jvm.period=10
+# jvm.servers=localhost:8649
+
+# Configuration of the "rpc" context for null
+rpc.class=org.apache.hadoop.metrics.spi.NullContext
+
+# Configuration of the "rpc" context for file
+#rpc.class=org.apache.hadoop.metrics.file.FileContext
+#rpc.period=10
+#rpc.fileName=/tmp/rpcmetrics.log
+
+# Configuration of the "rpc" context for ganglia
+# rpc.class=org.apache.hadoop.metrics.ganglia.GangliaContext
+# rpc.class=org.apache.hadoop.metrics.ganglia.GangliaContext31
+# rpc.period=10
+# rpc.servers=localhost:8649
+
+
+# Configuration of the "ugi" context for null
+ugi.class=org.apache.hadoop.metrics.spi.NullContext
+
+# Configuration of the "ugi" context for file
+#ugi.class=org.apache.hadoop.metrics.file.FileContext
+#ugi.period=10
+#ugi.fileName=/tmp/ugimetrics.log
+
+# Configuration of the "ugi" context for ganglia
+# ugi.class=org.apache.hadoop.metrics.ganglia.GangliaContext
+# ugi.class=org.apache.hadoop.metrics.ganglia.GangliaContext31
+# ugi.period=10
+# ugi.servers=localhost:8649
+
+# dfs.class=org.apache.hadoop.metrics.ganglia.GangliaContext31
+# dfs.period=10
+# dfs.servers={{ hdfs_namenode_1_hostname }}:{{ ganglia_gmond_namenode_port }}
+# mapred.class=org.apache.hadoop.metrics.ganglia.GangliaContext31
+# mapred.period=10
+# mapred.servers=node2.{{ dns_domain }}:{{ ganglia_gmond_hdfs_datanodes_port }},node5.{{ dns_domain }}:{{ ganglia_gmond_hdfs_datanodes_port }},node11.{{ dns_domain }}:{{ ganglia_gmond_hdfs_datanodes_port }}
+# hbase.class=org.apache.hadoop.metrics.ganglia.GangliaContext31
+# hbase.period=10
+# hbase.servers={{ hbase_master_1_hostname }}:{{ ganglia_gmond_cluster_port }}
+# jvm.class=org.apache.hadoop.metrics.ganglia.GangliaContext31
+# jvm.period=10
+# jvm.servers=node2.{{ dns_domain }}:{{ ganglia_gmond_hdfs_datanodes_port }},node5.{{ dns_domain }}:{{ ganglia_gmond_hdfs_datanodes_port }},node11.{{ dns_domain }}:{{ ganglia_gmond_hdfs_datanodes_port }}
+# rpc.class=org.apache.hadoop.metrics.ganglia.GangliaContext31
+# rpc.period=10
+# rpc.servers=node2.{{ dns_domain }}:{{ ganglia_gmond_hdfs_datanodes_port }},node5.{{ dns_domain }}:{{ ganglia_gmond_hdfs_datanodes_port }},node11.{{ dns_domain }}:{{ ganglia_gmond_hdfs_datanodes_port }}
+# ugi.class=org.apache.hadoop.metrics.ganglia.GangliaContext31
+# ugi.period=10
+# ugi.servers=node2.{{ dns_domain }}:{{ ganglia_gmond_hdfs_datanodes_port }},node5.{{ dns_domain }}:{{ ganglia_gmond_hdfs_datanodes_port }},node11.{{ dns_domain }}:{{ ganglia_gmond_hdfs_datanodes_port }}
+# fairscheduler.class=org.apache.hadoop.metrics.ganglia.GangliaContext31
+# fairscheduler.servers=node2.{{ dns_domain }}:{{ ganglia_gmond_hdfs_datanodes_port }},node5.{{ dns_domain }}:{{ ganglia_gmond_hdfs_datanodes_port }},node11.{{ dns_domain }}:{{ ganglia_gmond_hdfs_datanodes_port }}
+
--- a/roles/ganglia/templates/hadoop-metrics2.properties.j2
+++ b/roles/ganglia/templates/hadoop-metrics2.properties.j2
@ -0,0 +1,34 @@
+# Ganglia 3.1+ support
+*.period=60
+
+*.sink.ganglia.class=org.apache.hadoop.metrics2.sink.ganglia.GangliaSink31
+*.sink.ganglia.period=10
+# default for supportsparse is false
+*.sink.ganglia.supportsparse=true
+*.sink.ganglia.slope=jvm.metrics.gcCount=zero,jvm.metrics.memHeapUsedM=both
+*.sink.ganglia.dmax=jvm.metrics.threadsBlocked=70,jvm.metrics.memHeapUsedM=40
+
+
+namenode.sink.ganglia.servers={{ hdfs_namenode_1_hostname }}:{{ ganglia_gmond_namenode_port }},{{ hdfs_namenode_2_hostname }}:{{ ganglia_gmond_namenode_port }}
+datanode.sink.ganglia.servers=node2.{{ dns_domain }}:{{ ganglia_gmond_hdfs_datanodes_port }},node5.{{ dns_domain }}:{{ ganglia_gmond_hdfs_datanodes_port }},node11.{{ dns_domain }}:{{ ganglia_gmond_hdfs_datanodes_port }}
+jobtracker.sink.ganglia.servers={{ jobtracker_node_1_hostname }}:{{ ganglia_gmond_jobtracker_port }},{{ jobtracker_node_2_hostname }}:{{ ganglia_gmond_jobtracker_port }}
+#tasktracker.sink.ganglia.servers=node2.{{ dns_domain }}:{{ ganglia_gmond_tasktracker_port }},node5.{{ dns_domain }}:{{ ganglia_gmond_tasktracker_port }},node11.{{ dns_domain }}:{{ ganglia_gmond_tasktracker_port }}
+#maptask.sink.ganglia.servers=node2.{{ dns_domain }}:{{ ganglia_gmond_maptask_port }},node5.{{ dns_domain }}:{{ ganglia_gmond_maptask_port }},node11.{{ dns_domain }}:{{ ganglia_gmond_maptask_port }}
+#reducetask.sink.ganglia.servers=node2.{{ dns_domain }}:{{ ganglia_gmond_reducetask_port }},node5.{{ dns_domain }}:{{ ganglia_gmond_reducetask_port }},node11.{{ dns_domain }}:{{ ganglia_gmond_reducetask_port }}
+tasktracker.sink.ganglia.servers=node2.{{ dns_domain }}:{{ ganglia_gmond_hdfs_datanodes_port }},node5.{{ dns_domain }}:{{ ganglia_gmond_hdfs_datanodes_port }},node11.{{ dns_domain }}:{{ ganglia_gmond_hdfs_datanodes_port }}
+maptask.sink.ganglia.servers=node2.{{ dns_domain }}:{{ ganglia_gmond_hdfs_datanodes_port }},node5.{{ dns_domain }}:{{ ganglia_gmond_hdfs_datanodes_port }},node11.{{ dns_domain }}:{{ ganglia_gmond_hdfs_datanodes_port }}
+reducetask.sink.ganglia.servers=node2.{{ dns_domain }}:{{ ganglia_gmond_hdfs_datanodes_port }},node5.{{ dns_domain }}:{{ ganglia_gmond_hdfs_datanodes_port }},node11.{{ dns_domain }}:{{ ganglia_gmond_hdfs_datanodes_port }}
+hbase.extendedperiod = 3600
+hbase.sink.ganglia.servers=node2.{{ dns_domain }}:{{ ganglia_gmond_hdfs_datanodes_port }},node5.{{ dns_domain }}:{{ ganglia_gmond_hdfs_datanodes_port }},node11.{{ dns_domain }}:{{ ganglia_gmond_hdfs_datanodes_port }}
+hbase.servers=node2.{{ dns_domain }}:{{ ganglia_gmond_hdfs_datanodes_port }},node5.{{ dns_domain }}:{{ ganglia_gmond_hdfs_datanodes_port }},node11.{{ dns_domain }}:{{ ganglia_gmond_hdfs_datanodes_port }}
+#hbase.sink.ganglia.servers={{ hbase_master_1_hostname }}:{{ ganglia_gmond_hbmaster_port }},{{ hbase_master_2_hostname }}:{{ ganglia_gmond_hbmaster_port }}
+#hbase.servers={{ hbase_master_1_hostname }}:{{ ganglia_gmond_hbmaster_port }},{{ hbase_master_2_hostname }}:{{ ganglia_gmond_hbmaster_port }}
+
+#resourcemanager.sink.ganglia.servers=
+#nodemanager.sink.ganglia.servers=
+#historyserver.sink.ganglia.servers=
+#journalnode.sink.ganglia.servers=
+#nimbus.sink.ganglia.servers=
+#supervisor.sink.ganglia.servers=
+#resourcemanager.sink.ganglia.tagsForPrefix.yarn=Queue
+
--- a/roles/hadoop_common/tasks/main.yml
+++ b/roles/hadoop_common/tasks/main.yml
@ -0,0 +1,43 @@
+---
+- name: Directory for hdfs root under /data
+  file: dest={{ hdfs_data_dir }} state=directory
+  tags:
+    - hadoop
+    - mapred
+    - hdfs
+
+# TODO: split and move to more specific roles.
+- name: Directories for the hdfs services
+  file: dest={{ hdfs_data_dir}}/{{ item }} state=directory owner=hdfs group=hdfs mode=700
+  with_items:
+    - '{{ hdfs_dn_data_dir }}'
+    - '{{ hdfs_journal_data_dir }}'
+  tags:
+    - hadoop
+    - mapred
+    - hdfs
+
+- name: Directories for mapred under /data/mapred
+  file: dest=/data/mapred state=directory
+  tags:
+    - hadoop
+    - mapred
+    - hdfs
+
+- name: Directories for mapred under /data/mapred
+  file: dest=/data/mapred/{{ item }} state=directory owner=mapred group=hadoop mode=700
+  with_items:
+    - jt
+    - local
+  tags:
+    - hadoop
+    - mapred
+    - hdfs
+
+- name: JMX secrets directory
+  file: dest=/etc/hadoop-jmx/conf state=directory owner=hdfs group=root mode=0750
+  when: hadoop_jmx_enabled
+  tags:
+    - hadoop
+    - jmx
+
--- a/roles/hadoop_config/files/dfs_hosts_exclude.txt
+++ b/roles/hadoop_config/files/dfs_hosts_exclude.txt
@ -0,0 +1,8 @@
+node13.t.hadoop.research-infrastructures.eu
+node12.t.hadoop.research-infrastructures.eu
+node11.t.hadoop.research-infrastructures.eu
+node10.t.hadoop.research-infrastructures.eu
+node9.t.hadoop.research-infrastructures.eu
+node8.t.hadoop.research-infrastructures.eu
+node7.t.hadoop.research-infrastructures.eu
+node6.t.hadoop.research-infrastructures.eu
--- a/roles/hadoop_config/handlers/main.yml
+++ b/roles/hadoop_config/handlers/main.yml
@ -0,0 +1,39 @@
+---
+- name: Restart HDFS namenode
+  service: name=hadoop-hdfs-namenode state=restarted sleep=20
+  ignore_errors: true
+