j3k0 / fovea-marathon-base

Fovea marathon base

Ansible playbooks to initialize a bare mesos/marathon cluster

Getting started

Run a test cluster with Vagrant.

(cd inventory/vagrant; vagrant up)
ansible-playbook -i inventory/vagrant/hosts platform/full.yml

Specific of this install

• The cluster can be composed of any machines on the internet, they will be connected together by a tinc virtual private network (VPN).
• Each node have docker installed. Everything then runs inside docker containers.

Configuration

Your inventory file should list the following groups:

• mesos-masters
  • typically 3 hosts.
  • they'll run mesos masters, zookeeper and marathon.
• mesos-slaves
  • they'll run mesos agents.
  • can be on the same hosts as mesos-masters.
• marathon-lb-external
  • public load-balancers
• mesos-dns
  • DNS server for service discovery (for apps with static ports)

Following variables have to be defined:

• cluster_name a string naming this cluster
• zk_hosts comma separated list of hostname:port where zookeeper is running
  • usually ":2181,:2181,:2181"
  • (replace by the actual hostnames)
• mesos_masters space separated list of mesos masters hostnames
  • usually " "
• docker_bip binding interface for docker network
  • usually "172.17.0.1"
• ubuntu_version version of ubuntu running on machines
  • eg: ubuntu-trusty or ubuntu-xenial
• ssl_certs link to SSL certificates used by the load-balancer
  • concatenated PEM certificate and private key (see haproxy doc)

See inventory/vagrant/ for an example setup.

Load Balancers

• platorm/marathon-lb-external will expose apps that have the HAPROXY_GROUP=external label.
  • see marathon-lb documentation for details.