---

  - name: Install dnsmasq
    yum: name=dnsmasq state=installed
    when: "'admin' in group_names" # Only on admin server
    tags: rpm

  - name: Set dnsmasq config
    template: src=dnsmasq.conf dest=/etc/dnsmasq.conf
    when: "'admin' in group_names" # Only on admin server
    tags: config

  - name: Generate an /etc/hosts with all hosts
    template: dest=/etc/hosts.dnsmasq src=hosts
    when: "'admin' in group_names" # Only on admin server
    tags: config

  - name: Make sure dnsmasq daemon is enabled and started
    service: name=dnsmasq state=started enabled=yes
    when: "'admin' in group_names" # Only on admin server
    tags: config

  - name: Add an iptable rule to allow DNS queries from other hosts
    lineinfile: dest=/etc/sysconfig/iptables line="-A INPUT -p udp --dport 53 -j ACCEPT" insertafter="-A INPUT -i lo -j ACCEPT"
    when: "'admin' in group_names" # Only on admin server
    tags: iptables

  - name: Restart iptables
    service: name=iptables enabled=yes state=restarted
    when: "'admin' in group_names" # Only on admin server
    tags: iptables

  - name: Fix the /etc/resolv.conf of other hosts
    template: dest=/etc/resolv.conf src=resolv.conf
    when: "'admin' not in group_names" # On all other nodes
    tags: config