Minecraft Ansible Playbook

minecraft.yml

#
# Minecraft Server Ansible Playbook
#
# Author:: Pol Llovet (<[email protected]>)
# Copyright 2013, Montana State University
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
---
- hosts: minecraft
  sudo: yes
  roles:
    - common
    - ansible-helper-dirs
  handlers:
    - name: restart iptables
      service: name=iptables state=restarted
    - name: restart minecraft
      service: name=minecraft state=restarted
  tasks:
    - name: install required packages
      yum: name=screen
      tags:
        - install_minecraft

    - name: download java
      get_url: "url='http://javadl.sun.com/webapps/download/AutoDL?BundleId=78696' dest={{ansible_files}}/jre-7u25-linux-x64.rpm"
      tags:
        - install_java

    - name: install java
      yum: "name={{ansible_files}}/jre-7u25-linux-x64.rpm"
      tags:
        - install_java

    - name: create minecraft user
      user: name=minecraft
            group=nobody
            comment="Minecraft System User"
            home="/var/lib/minecraft"
            shell="/bin/bash"
            password="{{ users[0]['password'] }}"
      tags:
        - install_minecraft

    - name: add authorized_key for minecraft user
      authorized_key: "user=minecraft key='{{ users[0]['ssh_key'] }}'"
      tags:
        - install_minecraft

    - name: upload minecraft config files
      template: src=minecraft/{{item}}
            dest=~minecraft/{{item}}
            owner=minecraft
            group=nobody
            mode=0644
      with_items:
        - admin.txt
        - server.properties.cfg
      register: cfg_files
      notify: restart minecraft
      tags:
        - install_minecraft

    # The server has its way with server.properties, so it is always different from local
    - name: copy a server.properties only if the local one changes
      template: src=minecraft/server.properties.cfg
            dest=~minecraft/server.properties
            owner=minecraft
            group=nobody
            mode=0644
      when: cfg_files.changed
      notify: restart minecraft
      tags: 
        - install_minecraft 

    - name: install minecraft init script
      copy: src=minecraft/minecraft.init 
            dest=/etc/init.d/minecraft
            owner=minecraft
            group=nobody
            mode=0755
      tags:
        - install_minecraft

    - name: check to see if iptables is setup 
      shell: /sbin/iptables -n -L INPUT | grep 3232 
      register: dport_open
      ignore_errors: true
      tags:
        - iptables

    - name: update iptables to open required port
      command: "/sbin/iptables {{item}}"
      with_items:
        - "-A INPUT -p udp -m state --state NEW -m udp --dport 3232 -j ACCEPT"
        - "-A INPUT -p tcp -m state --state NEW -m tcp --dport 3232 -j ACCEPT"
        - "-A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT"
        - "-A INPUT -p icmp -j ACCEPT"
        - "-A INPUT -i lo -j ACCEPT"
        - "-A INPUT -p tcp -m state --state NEW -m tcp --dport 22 -j ACCEPT"
        - "-A INPUT -j REJECT --reject-with icmp-host-prohibited"
        - "-A FORWARD -j REJECT --reject-with icmp-host-prohibited"
      when: dport_open | failed
      register: update_iptables
      notify: 
        - restart iptables
      tags:
        - iptables

    - name: save iptables
      command: /sbin/service iptables save
      tags:
        - iptables

    - name: download minecraft jar file
      get_url: url=https://s3.amazonaws.com/Minecraft.Download/versions/1.6.2/minecraft_server.1.6.2.jar 
               dest=~minecraft/minecraft_server.jar
               owner=minecraft
               group=nobody
               mode=0755
      notify: restart minecraft
      tags:
        - install_minecraft

    - name: add minecraft init script to startup
      service: name=minecraft enabled=yes
      tags:
        - install_minecraft

    - name: create a cron entry for backup
      cron: name='Minecraft Periodic Backup'
            job='/etc/init.d/minecraft backup'
            user=minecraft
            minute='0,30'
      tags:
        - install_minecraft