datanode.yml

- hosts: datanode
  vars_files:
          - hadoop_var.yml
  tasks:
          - file: 
                  path: "/root/hadoop/Packages"
                  state: directory
          - copy:
                  src: "/root/hadoop"
                  dest: "/root/hadoop"
          - dnf:
                  name: "python3-dnf"
 

          - dnf:
                  name: "/root/hadoop/hadoop/jdk-8u171-linux-x64.rpm"
                  disable_gpg_check: yes
          - shell:
                  cmd: "rpm -i hadoop-1.2.1-1.x86_64.rpm --force"
                  chdir: "/root/hadoop/hadoop"
          - file:
                  path: "/{{dn_folder}}"
                  state: "directory"


          - blockinfile:
                  path: "/etc/hadoop/hdfs-site.xml"
                  insertafter: "<configuration>"
                  block: "<property>\n<name>dfs.data.dir</name>\n<value>{{dn_folder}}</value>\n</property>\n"
            notify:
                          - Start Datanode
          
          - blockinfile:
                  path: "/etc/hadoop/core-site.xml"
                  insertafter: "<configuration>"
                  block:
                          "<property>
                          \n<name>fs.default.name</name>
                          \n<value>hdfs://{{ansible_facts['default_ipv4']['address']}}:{{nn_port_number}}</value>
                          \n</property>"
           

  handlers:
           - name: Start Datanode
             shell:
                     cmd: "hadoop-daemon.sh start datanode"