datanode.yml

- hosts: [Datanode]
  vars_prompt:
  - name: dir
    private: no
    prompt: "Enter name for datanode  directory: "
  - name: ip
    private: no
    prompt: "Enter IP of Namenode: " 
  tasks:
  - name: "Copying JDK SOftwares"
    copy:
      src: "/root/jdk-8u171-linux-x64.rpm"
      dest: "/"

  - name: "Installing JDK Softwares"
    shell: "rpm -i /jdk-8u171-linux-x64.rpm"
    ignore_errors: yes

  - name: "Copying Hadoop SOftwares"
    copy:
      src: "/root/hadoop-1.2.1-1.x86_64.rpm"
      dest: "/"

  - name: "Installing Hadoop Softwares"
    shell: "rpm -i /hadoop-1.2.1-1.x86_64.rpm --force"
    ignore_errors: yes
 
  - name: "Stopping Firewall"
    shell: "systemctl stop firewalld"
    ignore_errors: yes

  - name: "Creating Directory"
    file:
      state: directory
      path: /"{{dir}}"
   
  - name: "Configuring Hdfs-site file"
    template:
      src: "/ws2/dn-hdfs-site.xml"
      dest: "/etc/hadoop/hdfs-site.xml"

  - name: "Configuring Core-site file"
    template:
      src: "/ws2/dn-core-site.xml"
      dest: "/etc/hadoop/core-site.xml"

  - name: "Starting Datanode"
    shell: "hadoop-daemon.sh start datanode"
    ignore_errors: yes

  - name: "showing status"
    shell: "jps"
    register: s
  - name: "showing status"
    debug: 
      var: s.stdout

  - name: "showing cluster report"
    shell: "hadoop dfsadmin -report"
    register: r
  - name: "showing cluster report"
    debug:
      var: r.stdout