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https://github.com/AnsibleShipyard/ansible-marathon

Ansible Marathon Playbook
https://github.com/AnsibleShipyard/ansible-marathon

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Ansible Marathon Playbook

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ansible-marathon

=================



[![Build Status](https://travis-ci.org/AnsibleShipyard/ansible-marathon.svg?branch=master)](https://travis-ci.org/AnsibleShipyard/ansible-marathon)

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Apache Marathon playbook with optional HAProxy configuration support.



Note that current Ansible Marathon version requires Java8 you can find how to install it below.



Installation

-----------



```bash

ansible-galaxy install JasonGiedymin.marathon

```



Requirements

------------



 - Java 8

 - Apache Zookeeper

 - Apache Mesos



Role Variables

--------------



```yaml

---

marathon_version: "1.3.6"



# Debian: Mesosphere apt repository URL

marathon_apt_package: "marathon={{ marathon_version }}-*"

marathon_apt_repo: "deb http://repos.mesosphere.com/{{ansible_distribution|lower}} {{ansible_distribution_release|lower}} main"

# Debian apt pin priority for the marathon package. If empty (the default), no pin priority is used.

marathon_apt_pin_priority:



# RedHat: Mesosphere yum repository URL

marathon_yum_package: "marathon-{{ marathon_version }}"

mesosphere_yum_repo: "http://repos.mesosphere.com/el/{{ os_version_major }}/noarch/RPMS/{{ mesosphere_releases[os_version_major] }}"



marathon_hostname: "{{ inventory_hostname }}"

marathon_port: 8080

marathon_env_java_opts: '-Xmx512m'

marathon_env_vars:

  - "JAVA_OPTS={{ marathon_env_java_opts }}"



# command line flags:

# https://mesosphere.github.io/marathon/docs/command-line-flags.html

# Marathon reads files under /etc/marathon/conf and adds them to CLI

# The path to Zookeeper which Marathon can use to find the Mesos masters and use as a state store.

zookeeper_hostnames: "localhost:2181"



# The path to Mesos in the Zookeeper cluster

mesos_zookeeper_path: "/mesos"



# The path to Marathon in the Zookeeper cluster

marathon_zookeeper_path: "/marathon"

mesos_zookeeper_masters: "zk://{{ zookeeper_hostnames }}{{ mesos_zookeeper_path }}"

marathon_zookeeper_state: "zk://{{ zookeeper_hostnames }}{{ marathon_zookeeper_path }}"



# The path to install the haproxy configuration script. If this is an empty string ```""``` haproxy configuration will be disabled.

haproxy_script_location: "/usr/local/bin"



# **Mesos** SSL support

mesos_ssl_enabled: false # When mesos has SSL enabled, set to true and fill in other `mesos_ssl_` variables.

mesos_ssl_support_downgrade: false

mesos_ssl_key_file: # When mesos SSL is enabled this must be used to point to the SSL key file

mesos_ssl_cert_file: # When mesos SSL is enabled this must be used to point to the SSL certificate file



# optional

artifact_store: ""

checkpoint: "true"

marathon_mesos_role: ""



marathon_additional_configs: []

#    For example:

#    - name: task_lost_expunge_interval

#      value: 900000

```



Dependencies

------------



 - https://github.com/geerlingguy/ansible-role-java

 - https://github.com/AnsibleShipyard/ansible-zookeeper

 - https://github.com/AnsibleShipyard/ansible-mesos

 - HAProxy installed for HAProxy support



Example Playbook

----------------



```yaml

- hosts: all

  tasks:

    - name: Installing repo for Java 8 for Debian

      apt_repository: repo='ppa:openjdk-r/ppa'

      when:

        - ansible_os_family == 'Debian'

        - ansible_distribution_version|version_compare(16.04, '<')



- name: Install dependencies

  hosts: all

  roles:

    - role: geerlingguy.java

      java_packages:

        - openjdk-8-jdk

      when: ansible_os_family == 'Debian'



    - role: geerlingguy.java

      java_packages:

        - java-1.8.0-openjdk

      when: ansible_os_family == 'RedHat'



    - role: AnsibleShipyard.ansible-zookeeper

    - role: JasonGiedymin.mesos

      mesos_install_mode: master-slave



    - role: JasonGiedymin.marathon

```



HAProxy Support

----------------



A cron job is configured to run the haproxy_dns_cfg script which will query

the marathon api for applications and setup the appropriate frontend (listening on port 80)

with backends for each application.

HAProxy will look for a hostname prefixed with the application name and route to that backend.

Using this technique you can wildcard a dns host to all your masters

(say, *.example.com) and an application you launch (say, "myapp") will be

available at myapp.example.com. This can be disabled by setting the haproxy_script_location

to an emptry string ```""```. It will only be installed if HAProxy is present.



License

-------



Apache License Version 2.0, January 2004



AnsibleShipyard

-------



Our related playbooks



1. [ansible-mesos](https://github.com/AnsibleShipyard/ansible-mesos)

1. [ansible-chronos](https://github.com/AnsibleShipyard/ansible-chronos)

1. [ansible-zookeeper](https://github.com/AnsibleShipyard/ansible-zookeeper)



Author Information

------------------



@AnsibleShipyard/developers and others.