diff --git a/README.md b/README.md
index 3a3c43b1742d6ff7fc56d408fdcd835daf262598..7c451c1479822768d2bb51ad8d3513f305d30497 100644
--- a/README.md
+++ b/README.md
@@ -7,7 +7,7 @@ This project aims to deploy a datalake and its ecosystem using **[Ansible](http
Acutally, this project does :
1. Deploy a mono-node HDFS on :
- * [Your own computer using a virtual machine with Vagrant & ansible provision](#deploy-mono-node-hdfs-on-a-VM)
+ * [Your own computer using a virtual machine with Vagrant & ansible provision](#deploy-mono-node-hdfs-on-a-vm)
* [a server using ansible](#deploy-mono-node-hdfs-on-a-server)
2. Deploy a cluster HDFS on :
* [Your own computer using as many virtual machine you want using Vagrant & ansible](#deploy-cluster-hdfs-with-multiple-vms)
diff --git a/playbook/roles/hadoop-common/tasks/main.yml b/playbook/roles/hadoop-common/tasks/main.yml
index 5fb7ebde23826840a10c6f2316dee506b8236b65..fc3d342716f88b697f73db60f04bcb5601d2ce80 100644
--- a/playbook/roles/hadoop-common/tasks/main.yml
+++ b/playbook/roles/hadoop-common/tasks/main.yml
@@ -6,101 +6,101 @@
- "Be aware that things may not work when using jdk 11 like explore HDFS using webserver on port 9870"
- "Default IPv4 address is : {{ ansible_default_ipv4.address }}"
-# - name: Set java home as environment variable
-# become: yes
-# apt:
-# name:
-# - openjdk-11-jdk
-
-# - name: create hadoop group
-# become: yes
-# group:
-# name: hadoop
-
-# - name: create hadoop user
-# become: yes
-# user:
-# name: hadoop
-# group: hadoop
-# home: "{{ hadoopUSRHome }}"
-# createhome: yes
-# system: yes
-
-# - name: Set JAVA_HOME as environment variable
-# become: yes
-# become_user : hadoop
-# blockinfile:
-# insertafter: EOF
-# path : ~/.bashrc
-# block: |
-# export JAVA_HOME={{ javahome }}
-# export HADOOP_HOME=/usr/local/hadoop
-# export PATH=$PATH:$HADOOP_HOME/bin
-
-# - name: source .bashrc
-# become: yes
-# become_user: hadoop
-# shell: source ~/.bashrc
-# args:
-# executable: /bin/bash
-
-
-# - name: create .ssh directory
-# become: yes
-# file:
-# path: "{{ hadoopUSRHome }}/.ssh/"
-# state: directory
-# owner: hadoop
-# group: hadoop
-# mode: 0700
-
-# - name: copy ssh key
-# become: yes
-# copy:
-# src: "{{ item }}"
-# dest: "{{ hadoopUSRHome }}/.ssh/"
-# owner: hadoop
-# group: hadoop
-# mode: 0600
-# with_items:
-# - keys/id_rsa
-# - keys/id_rsa.pub
-
-# - name: authorized ssh key for hadoop user
-# become: yes
-# authorized_key:
-# user: hadoop
-# state: present
-# key: "{{ lookup('file', 'keys/id_rsa.pub') }}"
+- name: Set java home as environment variable
+ become: yes
+ apt:
+ name:
+ - openjdk-11-jdk
+
+- name: create hadoop group
+ become: yes
+ group:
+ name: hadoop
+
+- name: create hadoop user
+ become: yes
+ user:
+ name: hadoop
+ group: hadoop
+ home: "{{ hadoopUSRHome }}"
+ createhome: yes
+ system: yes
+
+- name: Set JAVA_HOME as environment variable
+ become: yes
+ become_user : hadoop
+ blockinfile:
+ insertafter: EOF
+ path : ~/.bashrc
+ block: |
+ export JAVA_HOME={{ javahome }}
+ export HADOOP_HOME=/usr/local/hadoop
+ export PATH=$PATH:$HADOOP_HOME/bin
+
+- name: source .bashrc
+ become: yes
+ become_user: hadoop
+ shell: source ~/.bashrc
+ args:
+ executable: /bin/bash
+
+
+- name: create .ssh directory
+ become: yes
+ file:
+ path: "{{ hadoopUSRHome }}/.ssh/"
+ state: directory
+ owner: hadoop
+ group: hadoop
+ mode: 0700
+
+- name: copy ssh key
+ become: yes
+ copy:
+ src: "{{ item }}"
+ dest: "{{ hadoopUSRHome }}/.ssh/"
+ owner: hadoop
+ group: hadoop
+ mode: 0600
+ with_items:
+ - keys/id_rsa
+ - keys/id_rsa.pub
+
+- name: authorized ssh key for hadoop user
+ become: yes
+ authorized_key:
+ user: hadoop
+ state: present
+ key: "{{ lookup('file', 'keys/id_rsa.pub') }}"
-# - name: create a tempory directory
-# become: yes
-# file:
-# state: directory
-# path: "{{ hadoopUSRHome }}/tmp"
-
-# - name: create a prod directory for hadoop
-# become: yes
-# file:
-# state: directory
-# path: "{{ hadoopDir }}"
-
-# - name: "Download and Extract hadoop-{{ hadoopVersion }}"
-# become: yes
-# unarchive:
-# src: "http://apache.mirrors.ovh.net/ftp.apache.org/dist/hadoop/core/hadoop-{{ hadoopVersion }}/hadoop-{{ hadoopVersion }}.tar.gz"
-# remote_src: yes
-# dest: "{{ hadoopDir }}"
-# extra_opts: [--strip-components=1]
-# owner: hadoop
-# group: hadoop
-
-# - name : Set JAVA_HOME in hadoop-env.sh
-# become: yes
-# blockinfile:
-# insertafter: EOF
-# path: "{{ hadoopDir }}/etc/hadoop/hadoop-env.sh"
-# block: "export JAVA_HOME={{ javahome }}"
+- name: create a tempory directory
+ become: yes
+ file:
+ state: directory
+ path: "{{ hadoopUSRHome }}/tmp"
+
+- name: create a prod directory for hadoop
+ become: yes
+ file:
+ state: directory
+ path: "{{ hadoopDir }}"
+
+- name: "Download and Extract hadoop-{{ hadoopVersion }}"
+ become: yes
+ unarchive:
+ src: "http://apache.mirrors.ovh.net/ftp.apache.org/dist/hadoop/core/hadoop-{{ hadoopVersion }}/hadoop-{{ hadoopVersion }}.tar.gz"
+ remote_src: yes
+ dest: "{{ hadoopDir }}"
+ extra_opts: [--strip-components=1]
+ owner: hadoop
+ group: hadoop
+
+- name : Set JAVA_HOME in hadoop-env.sh
+ become: yes
+ blockinfile:
+ insertafter: EOF
+ path: "{{ hadoopDir }}/etc/hadoop/hadoop-env.sh"
+ block: "export JAVA_HOME={{ javahome }}"
# - name: configure core-site.xml
# become: yes
diff --git a/playbook/roles/hadoop-mononode/tasks/main.yml b/playbook/roles/hadoop-mononode/tasks/main.yml
new file mode 100644
index 0000000000000000000000000000000000000000..2d66cf0fb20f6fc3615725f761c4032531a91d92
--- /dev/null
+++ b/playbook/roles/hadoop-mononode/tasks/main.yml
@@ -0,0 +1,66 @@
+- name: configure core-site.xml
+ become: yes
+ template:
+ src: templates/core-site.j2
+ dest: "{{ hadoopDir }}/etc/hadoop/core-site.xml"
+ owner: hadoop
+ group: hadoop
+
+- name: configure hdfs-site.xml
+ become: yes
+ template:
+ src: templates/hdfs-site.j2
+ dest: "{{ hadoopDir }}/etc/hadoop/hdfs-site.xml"
+ owner: hadoop
+ group: hadoop
+
+- name: configure mapred-site.xml
+ become: yes
+ template:
+ src: templates/mapred-site.j2
+ dest: "{{ hadoopDir }}/etc/hadoop/mapred-site.xml"
+ owner: hadoop
+ group: hadoop
+
+- name: copy hadoop service file
+ become: yes
+ template:
+ src: templates/hadoop.service.j2
+ dest: /etc/systemd/system/hadoop.service
+
+- name: enable hadoop service
+ become: yes
+ service:
+ daemon_reload: yes
+ name: hadoop
+ state: stopped
+ enabled: yes
+
+- name: HDFS has been already formatted ?
+ become: yes
+ stat:
+ path: /tmp/hadoop-hadoop/dfs/name/current/VERSION
+ register: file_exist
+
+- debug:
+ msg: "/tmp/hadoop-hadoop/dfs/name/current/VERSION exists ? : {{ file_exist.stat.exists}}"
+
+- name: format HDFS
+ become: yes
+ become_user: hadoop
+ shell: "{{ hadoopDir }}/bin/hdfs namenode -format"
+ args:
+ executable: /bin/bash
+ when: file_exist.stat.exists == False
+
+- name: stopped hadoop service
+ become: yes
+ service:
+ name: hadoop
+ state: stopped
+
+- name: start hadoop service
+ become: yes
+ service:
+ name: hadoop
+ state: started
\ No newline at end of file
diff --git a/playbook/roles/hadoop-mononode/templates/core-site.j2 b/playbook/roles/hadoop-mononode/templates/core-site.j2
new file mode 100644
index 0000000000000000000000000000000000000000..ba76ece8d8122832cb88e2631c43e0f11b62bc9a
--- /dev/null
+++ b/playbook/roles/hadoop-mononode/templates/core-site.j2
@@ -0,0 +1,6 @@
+<configuration>
+ <property>
+ <name>fs.default.name</name>
+ <value>hdfs://localhost:9000</value>
+ </property>
+</configuration>
\ No newline at end of file
diff --git a/playbook/roles/hadoop-mononode/templates/hadoop.service.j2 b/playbook/roles/hadoop-mononode/templates/hadoop.service.j2
new file mode 100644
index 0000000000000000000000000000000000000000..a48a42b301586c971cc56946136f616114a7a300
--- /dev/null
+++ b/playbook/roles/hadoop-mononode/templates/hadoop.service.j2
@@ -0,0 +1,20 @@
+[Unit]
+Description=Hadoop DFS namenode and datanode
+After=syslog.target network.target remote-fs.target nss-lookup.target network-online.target
+Requires=network-online.target
+
+[Service]
+User=hadoop
+Group=hadoop
+Type=forking
+ExecStart={{ hadoopDir }}sbin/start-dfs.sh
+ExecStop={{ hadoopDir }}sbin/stop-dfs.sh
+WorkingDirectory={{ hadoopDir }}
+Environment=JAVA_HOME={{ javahome }}
+Environment=HADOOP_HOME={{ hadoopDir }}
+TimeoutStartSec=2min
+# Restart=on-failure
+PIDFile=/tmp/hadoop-hadoop-namenode.pid
+
+[Install]
+WantedBy=multi-user.target
\ No newline at end of file
diff --git a/playbook/roles/hadoop-mononode/templates/hdfs-site.j2 b/playbook/roles/hadoop-mononode/templates/hdfs-site.j2
new file mode 100644
index 0000000000000000000000000000000000000000..84f3842e9e3f7d21ac1707c44a7933359a092d01
--- /dev/null
+++ b/playbook/roles/hadoop-mononode/templates/hdfs-site.j2
@@ -0,0 +1,6 @@
+<configuration>
+ <property>
+ <name>dfs.replication</name>
+ <value>1</value>
+ </property>
+</configuration>
diff --git a/playbook/roles/hadoop-mononode/templates/mapred-site.j2 b/playbook/roles/hadoop-mononode/templates/mapred-site.j2
new file mode 100644
index 0000000000000000000000000000000000000000..74e723d7f92e578a00419bbf0f956972229e5c6a
--- /dev/null
+++ b/playbook/roles/hadoop-mononode/templates/mapred-site.j2
@@ -0,0 +1,4 @@
+<property>
+<name>mapred.job.tracker</name>
+<value>localhost:9001</value>
+</property>
\ No newline at end of file