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README_AWS.md

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AWS Setup Instructions

Get AWS API credentials

  1. AWS credentials documentation

Create a credentials file

  1. Create a credentials file (eg ~/.aws_creds) that looks something like this (variables must have have these exact names).
   export AWS_ACCESS_KEY_ID='AKIASTUFF'
   export AWS_SECRET_ACCESS_KEY='STUFF'
  1. source this file
  source ~/.aws_creds

Note: You must source this file before running any Ansible commands.

(Optional) Setup your $HOME/.ssh/config file

In case of a cluster creation, or any other case where you don't know the machine hostname in advance, you can use '.ssh/config' to setup a private key file to allow ansible to connect to the created hosts.

To do so, add the the following entry to your $HOME/.ssh/config file and make it point to the private key file which allows you to login on AWS. ''' Host *.compute-1.amazonaws.com PrivateKey $HOME/.ssh/my_private_key.pem '''

Alternatively, you can configure your ssh-agent to hold the credentials to connect to your AWS instances.

(Optional) Choose where the cluster will be launched

By default, a cluster is launched with the following configuration:

  • Instance type: m3.large
  • AMI: ami-307b3658 (for online deployments, ami-acd999c4 for origin deployments and ami-10663b78 for enterprise deployments)
  • Region: us-east-1
  • Keypair name: libra
  • Security group: public

Master specific defaults:

  • Master root volume size: 10 (in GiBs)
  • Master root volume type: gp2
  • Master root volume iops: 500 (only applicable when volume type is io1)

Node specific defaults:

  • Node root volume size: 10 (in GiBs)
  • Node root volume type: gp2
  • Node root volume iops: 500 (only applicable when volume type is io1)
  • Docker volume size: 25 (in GiBs)
  • Docker volume ephemeral: true (Whether the docker volume is ephemeral)
  • Docker volume type: gp2 (only applicable if ephemeral is false)
  • Docker volume iops: 500 (only applicable when volume type is io1)

If needed, these values can be changed by setting environment variables on your system.

  • export ec2_instance_type='m3.large'
  • export ec2_ami='ami-307b3658'
  • export ec2_region='us-east-1'
  • export ec2_keypair='libra'
  • export ec2_security_groups="['public']"
  • export os_master_root_vol_size='20'
  • export os_master_root_vol_type='standard'
  • export os_node_root_vol_size='15'
  • export os_docker_vol_size='50'
  • export os_docker_vol_ephemeral='false'

Install Dependencies

  1. Ansible requires python-boto for aws operations: RHEL/CentOS/Fedora
  yum install -y ansible python-boto

OSX:

  pip install -U boto

Test The Setup

  1. cd openshift-ansible
  2. Try to list all instances (Passing an empty string as the cluster_id argument will result in all ec2 instances being listed)
  bin/cluster list aws ''

Creating a cluster

  1. To create a cluster with one master and two nodes
  bin/cluster create aws <cluster-id>

Updating a cluster

  1. To update the cluster
  bin/cluster update aws <cluster-id>

Terminating a cluster

  1. To terminate the cluster
  bin/cluster terminate aws <cluster-id>