rancher terraform (HA - Highly Available)

Terraform files for deploying a Rancher HA cluster in AWS

Usage

Clone this repo:

git clone git@github.com:WesleyCharlesBlake/rancher-terraform.git
cd rancher-terraform

Edit the terraform.tfvars file:

# AWS key for the instances
key_name = "rancher-example"

# RDS database password
db_pass = "rancherdbpass"

To create the cluster:

terraform apply

To destroy:

terraform destroy

Variables

AWS Infrastructure

• region: AWS region (default: us-east-1)
• count: number of HA servers to deploy (default: 3)
• name_prefix: prefix for all AWS resource names (default: rancher-ha)
• ami: instance AMI ID (default: ami-dfdff3c8; RancherOS in us-east-1)
• key_name: SSH key name in your AWS account for AWS instances (required)
• instance_type: AWS instance type (default: t2.large for RAM requirement)
• root_volume_size: size in GB of the instance root volume (default: 16)
• vpc_cidr: subnet in CIDR format to assign to the VPC (default: 192.168.199.0/24)
• subnet_cidrs: list of subnet ranges (3 required) (default: ["192.168.199.0/26", "192.168.199.64/26", "192.168.199.128/26")
• availability_zones: AZs for placing instances and subnets (may change based on your account's availability) (default: ["us-east-1a", "us-east-1b", "us-east-1d"])
• internal_elb: Make ELB internal to VPC vs externally accessible (default: false)

Note: if you use an AMI other than RancherOS, the automatic launching of the Rancher server container will not work. You will need to update the user-data template according to the needs of your AMI.

Database

• db_name: name of the RDS DB (default: rancher)
• db_user: username used to connect to the RDS database (default: rancher)
• db_pass: password used to connect to the RDS database (required)

SSL

• enable_https: enable HTTPS termination on the loadbalancer (default: false)
• cert_body: required if enable_https is set to true
• cert_private_key: required if enable_https is set to true
• cert_chain: required if enable_https is set to true

Rancher

• rancher_version: Rancher version to deploy (default: stable)