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Elastic CI Stack for AWS

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Buildkite Elastic CI Stack for AWS

Buildkite is a platform for running fast, secure, and scalable continuous integration pipelines on your own infrastructure.

The Buildkite Elastic CI Stack for AWS gives you a private, autoscaling Buildkite Agent cluster. Use it to parallelize large test suites across thousands of nodes, run tests and deployments for Linux or Windows based services and apps, or run AWS ops tasks.

Getting started

See the Elastic CI Stack for AWS tutorial for a step-by-step guide, and the Elastic CI Stack for AWS documentation for detailed information.

Or jump straight in:

Launch AWS Stack

The current release is . See Releases for older releases.

Although the stack creates its own VPC by default, we highly recommend following best practice by setting up a separate development AWS account and using role switching and consolidated billing — see the Delegate Access Across AWS Accounts tutorial for more information.

If you want to use the AWS CLI, download config.json.example, rename it to config.json, and then run the below command:

aws cloudformation create-stack \
  --output text \
  --stack-name buildkite \
  --template-url "https://s3.amazonaws.com/buildkite-aws-stack/latest/aws-stack.yml" \
  --capabilities CAPABILITY_IAM CAPABILITY_NAMED_IAM \
  --parameters "$(cat config.json)"

Supported Features

Most features are supported across both Linux and Windows. See below for details of per-operating system support:

Feature Linux Windows
Docker
Docker Compose
AWS CLI
S3 Secrets Bucket
ECR Login
Docker Login
CloudWatch Logs Agent
Per-Instance Bootstrap Script
🧑‍🔬 git-mirrors experiment
SSM Access
Instance Storage (NVMe)
SSH Access
Periodic authorized_keys Refresh
Periodic Instance Health Check
git lfs
Additional sudo Permissions
RDP Access

Security

This repository hasn't been reviewed by security researchers so exercise caution and careful thought with what credentials you make available to your builds.

Anyone with commit access to your codebase (including third-party pull-requests if you've enabled them in Buildkite) will have access to your secrets bucket files.

Also keep in mind the EC2 HTTP metadata server is available from within builds, which means builds act with the same IAM permissions as the instance.

Development

To get started with customizing your own stack, or contributing fixes and features:

# Checkout all submodules
git submodule update --init --recursive

# Build all AMIs and render a cloud formation template - this requires AWS credentials (in the ENV)
# to build an AMI with packer
make build

# To create a new stack on AWS using the local template
make create-stack

# You can use any of the AWS* environment variables that the aws-cli supports
AWS_PROFILE="some-profile" make create-stack

# You can also use aws-vault or similar
aws-vault exec some-profile -- make create-stack

If you need to build your own AMI (because you've changed something in the packer directory), run packer with AWS credentials in your shell environment:

make packer

This will boot and image three AWS EC2 instances in your account’s us-east-1 default VPC:

  • Linux (64-bit x86)
  • Linux (64-bit Arm)
  • Windows (64-bit x86)

Support Policy

We provide support for security and bug fixes on the current major release only.

If there are any changes in the master branch since the last tagged release, we aim to publish a new tagged release of this template at the end of each month.

AWS Regions

We support all AWS Regions, except China and US GovCloud.

We aim to support new regions within one month of general availability.

Operating Systems

We build and deploy the following AMIs to all our supported regions:

  • Amazon Linux 2 (64-bit x86)
  • Amazon Linux 2 (64-bit Arm)
  • Windows Server 2019 (64-bit x86)

Buildkite Agent

The Elastic CI Stack template published from the master branch tracks the latest Buildkite Agent release.

You may wish to preview any updates to your stack from this template using a CloudFormation Stack Change Set to decide whether to apply it.

Questions and support

Feel free to drop an email to [email protected] with questions. It helps us if you can provide the following details:

# List your stack parameters
aws cloudformation describe-stacks --stack-name MY_STACK_NAME \
  --query 'Stacks[].Parameters[].[ParameterKey,ParameterValue]' --output table

Provide us with logs from CloudWatch Logs:

/buildkite/elastic-stack/{instance-id}
/buildkite/systemd/{instance-id}

You can also drop by #aws-stack and #aws channels in Buildkite Community Slack and ask your question!

Licence

See Licence.md (MIT)


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