namenode.yml

- hosts: namenode
  vars_prompt:
          - name : nn_dir
            prompt : "enter name for namenode"
            private : no
  tasks:
          - name : "To copy Hadoop software"
            copy: 
                        src: "/root/hadoop-1.2.1-1.x86_64.rpm"
                        dest: "/root"
          - name : "to copy Jdk software"
            copy :
                        src : "/root/jdk-8u171-linux-x64.rpm"
                        dest : "/root"
          - name : " to install Jdk"
            command: "rpm -ivh  jdk-8u171-linux-x64.rpm"
            ignore_errors: yes

          - name : " to install hadoop"
            command: "rpm -ivh hadoop-1.2.1-1.x86_64.rpm --force"

          - name : " to create directroy"
            file: 
                        path: "{{nn_dir}}"
                        state: directory

          
                  

          - name : "to configure hdfs file"
            template :
                        src: "/root/ansible/hadoop/dn/hdfs-site.xml"
                        dest: "/etc/hadoop"

          - name : "To configure core file"
            template :
                        src: "/root/ansible/hadoop/dn/core-site.xml"
                        dest: "/etc/hadoop"

          - name : "to format namenode"
            shell: "echo Y | hadoop namenode -format"
            register : fromat

          - name : "formating namenode"
            debug:
                         var: format.stdout
          - name : " To start service"