92 lines
2.4 KiB
Markdown
92 lines
2.4 KiB
Markdown
# Provision a Nomad cluster on AWS
|
|
|
|
## Pre-requisites
|
|
|
|
To get started, create the following:
|
|
|
|
- AWS account
|
|
- [API access keys](http://aws.amazon.com/developers/access-keys/)
|
|
- [SSH key pair](http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ec2-key-pairs.html)
|
|
|
|
## Set the AWS environment variables
|
|
|
|
```bash
|
|
$ export AWS_ACCESS_KEY_ID=[AWS_ACCESS_KEY_ID]
|
|
$ export AWS_SECRET_ACCESS_KEY=[AWS_SECRET_ACCESS_KEY]
|
|
```
|
|
|
|
## Build an AWS machine image with Packer
|
|
|
|
[Packer](https://www.packer.io/intro/index.html) is HashiCorp's open source tool
|
|
for creating identical machine images for multiple platforms from a single
|
|
source configuration. The Terraform templates included in this repo reference a
|
|
publicly available Amazon machine image (AMI) by default. The AMI can be customized
|
|
through modifications to the [build configuration script](../shared/scripts/setup.sh)
|
|
and [packer.json](packer.json).
|
|
|
|
Use the following command to build the AMI:
|
|
|
|
```bash
|
|
$ packer build packer.json
|
|
```
|
|
|
|
## Provision a cluster with Terraform
|
|
|
|
`cd` to an environment subdirectory:
|
|
|
|
```bash
|
|
$ cd env/us-east
|
|
```
|
|
|
|
Update `terraform.tfvars` with your SSH key name and your AMI ID if you created
|
|
a custom AMI:
|
|
|
|
```bash
|
|
region = "us-east-1"
|
|
ami = "ami-ec237c93"
|
|
instance_type = "t2.medium"
|
|
key_name = "KEY_NAME"
|
|
server_count = "3"
|
|
client_count = "4"
|
|
```
|
|
|
|
Modify the `region`, `instance_type`, `server_count`, and `client_count` variables
|
|
as appropriate. At least one client and one server are required. You can
|
|
optionally replace the Nomad binary at runtime by adding the `nomad_binary`
|
|
variable like so:
|
|
|
|
```bash
|
|
region = "us-east-1"
|
|
ami = "ami-ec237c93"
|
|
instance_type = "t2.medium"
|
|
key_name = "KEY_NAME"
|
|
server_count = "3"
|
|
client_count = "4"
|
|
nomad_binary = "https://releases.hashicorp.com/nomad/0.7.0/nomad_0.7.0_linux_amd64.zip"
|
|
```
|
|
|
|
Provision the cluster:
|
|
|
|
```bash
|
|
$ terraform init
|
|
$ terraform get
|
|
$ terraform plan
|
|
$ terraform apply
|
|
```
|
|
|
|
## Access the cluster
|
|
|
|
SSH to one of the servers using its public IP:
|
|
|
|
```bash
|
|
$ ssh -i /path/to/private/key ubuntu@PUBLIC_IP
|
|
```
|
|
|
|
The infrastructure that is provisioned for this test environment is configured to
|
|
allow all traffic over port 22. This is obviously not recommended for production
|
|
deployments.
|
|
|
|
## Next Steps
|
|
|
|
Click [here](../README.md#test) for next steps.
|