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Docker Quick Install

Playbook ansible to setup Docker and Swarm into multiple machines.

Prerequisites

You should have ansible installed to your machine.

Actually, the playbook works with theses linux distributions:

  • Ubuntu
  • Debian

Other distributions will be implemented later.

Configuration

You have to edit some files to run the playbook. The following description explain what changes have to be done.

Files

group_vars

Edit the group_vars/all.yml:

  • ansible_ssh_private_key_file: set you private key

Example:

ansible_ssh_private_key_file: "/home/aimen/.ssh/aimen_ec2.pem"

hosts

Edit the hosts file:

  • manager1: add the ansible_host and user
  • worker1: add the ansible_host and user

You must have only one manager, other managers could be declared to the managers group.

You can declare any number of workers you want.

Example:

[manager-first]
manager1 ansible_host="18.223.125.142" ansible_user="ubuntu"

[managers]

[workers]
worker1 ansible_host="18.224.34.32" ansible_user="ubuntu"
worker2 ansible_host="3.17.157.194" ansible_user="ubuntu"

Security

AWS

If you want to run this playbook to AWS, you should have those opened ports :

  • TCP 22
  • TCP 2376
  • TCP 2377
  • UDP 4789
  • TCP and UDP 7946

You can refer to the introduction of Digital Ocean article.

Usage

To run the playbook, you can follow this command:

ANSIBLE_HOST_KEY_CHECKING=False ansible-playbook -i hosts docker_setup.yml