ueokande / ansible-vagrant-playground

Elasticsearch ansible playbook powered by Vagrant

Ansible with vagrant playground

This repository presents an example of ansible playbook in combination with Vagrant Docker provider. In development of ansible playbooks, write, fix and run playbooks over and over again. This iteration not only delivery inessential files, but also makes difficult to guarantee the playbooks configure the host correctly from initial state.

A container technology is a good solution of the problems described previously since the construction and destruction of the environment is easy and fast. Vagrant accelerate the container management as ansible playground. This repository contains Vagrantfile and ansible playbools for an Elasticsearch clustiner.

Vagrantfile in this repository creates the following hosts:

• apt-cacher: an apt cache server
• elasticsearch-client: a client node and endpoint of the cluster.
• elasticsearch-master-{n}: master nodes in the cluster.
• elasticsearch-data-{n}: data nodes in the cluster.

Usage

Construct containers

Close the repository to local disk:

git clone https://github.com/ueokande/ansible-vagrant-playground

Create a network for communications between containers:

docker network create elasticsearch

Launch containers with vagrant up:

vagrant up
vagrant status

You can check the status of the containers:

vagrant status

Run ansible playbooks

Since vagrant ssh-config with no hosts fails, generate ssh config to login containers by following:

vagrant status | \
  awk '/running/ { print $1 }' | \
  grep -v 'apt-cacher' | \
  xargs -n1 vagrant ssh-config >ssh_config

Make an ansible settings to load ssh_config:

cat >ansible.cfg <<EOF
[ssh_connection]
ssh_args = -F ssh_config
EOF

Run ansible-playbook:

ansible-playbook --inventory-file=ansible/inventories/hosts --sudo ansible/site.yml

You can observe Elasticsearch cluster state with number_of_nodes of 11 and number_of_data_nodes of 6 via client node:

client_ip=$(docker inspect elasticsearch-client  | \
  jq -r '.[].NetworkSettings.Networks.elasticsearch.IPAddress')
curl http://${client_ip}:9200/_cluster/health | jq '.'

Licence

MIT