deployment/roles/ambari_common/tasks/main.yml

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---
- name: Check OS Version
  fail: msg="Ambari HDP deployment supports CentOS 6 only."
  when: (ansible_distribution != "CentOS" or ansible_distribution_major_version != "6")

- include: passwd_less_ssh.yml

- name: Ensure iptables is stopped and is not running at boot time.
  ignore_errors: yes
  service: name=iptables state=stopped enabled=no

#
# ambari uses socket.getfqdn() to find the hostname. with 'localhost.localdomain'
# in '/etc/hosts' this function will report the hostname as 'localhost.localdomain'
# rather than 'node1' as would be expected.  other functions like socket.gethostname()
# will always return 'node1' as expected.  ambari needs to see 'node1' to be able to
# communicate between the master and agents.

- name: Remove ipv4 'localhost.localdomain' from /etc/hosts
  lineinfile: dest=/etc/hosts state=absent regexp="^127.0.0.1(.*)localdomain(.*)$"

- name: Remove ipv6 'localhost.localdomain' from /etc/hosts
  lineinfile: dest=/etc/hosts state=absent regexp="^::1(.*)localdomain(.*)$"

- name: Add localhost to /etc/hosts
  lineinfile: dest=/etc/hosts line="127.0.0.1   localhost"

- name: Download Ambari repo
  get_url: url="{{ rhel_ambari_install_url }}" dest=/etc/yum.repos.d/ambari.repo

- name: Create Logrotate Script for Hadoop Services
  template:
    src: "metron-hadoop-logrotate.yml"
    dest: "/etc/logrotate.d/metron-ambari"
    mode: 0644