Installation Guide

This guide contains instructions on installing a self-hosted copy of Spacelift in an AWS account you control.

Pre-requisites

Before proceeding with the installation, you need to satisfy the following pre-requisites:

• You need access to an AWS account you wish to install Spacelift into.
• You need to choose a hostname that you wish to use for your Spacelift installation, for example spacelift.example.com. This needs to be on a domain that you control and can add DNS records to.
• You need to create an ACM certificate for your chosen domain in the same account that you want to install Spacelift in.

Requirements

The installation process requires the following tools:

• A Mac or Linux machine to run the installation script from.
• A copy of the AWS CLI v2, configured to access the account you wish to install Spacelift into.
• jq version 1.6.
• Standard unix utilities including bash, base64, cat, read, openssl.
• Docker.

Spacelift infrastructure

Server and drain

The Spacelift infrastructure has two core parts: the server and the drain. The server is a web application that provides a GraphQL API that serves frontend and every HTTPS request in general. The drain is a worker that processes all asynchronous tasks such as VCS webhooks, run scheduling, worker handling, etc. The drain consumes messages from several SQS queues. The server serves requests through a load balancer.

As of today, both the server and the drain are ECS services running on Fargate. We have autoscaling set up for the server so ideally you don't need to worry about scaling it.

Worker pool infrastructure

A worker pool is a group of workers that can be used to run workloads. During the startup the worker will attempt to connect to the regional AWS IoT Core broker endpoint and register itself. The drain and the server will then be able to communicate with the worker via AWS IoT Core, specifically via MQTT.

Running Costs

We estimate the baseline running costs of a Spacelift Self-Hosted instance to be around $15 per day (roughly $450 per month). Note that this is with no activity in your account, so your costs may be higher after factoring in things like bandwidth.

These baseline costs include all of the resources deployed as part of your Spacelift install, for example Aurora RDS, Fargate cluster, and KMS keys.

Installation

This section explains the installation process for Spacelift. You may also be interested in the following pages that explain how to configure the Slack integration as well as advanced installations:

• Slack integration setup - explains how to configure the Slack integration for your Spacelift instance.
• Advanced installations - explains how to configure advanced options like providing a custom VPC configuration, or specifying HTTP proxy settings.

AWS Requirements

Before you start the installation process, make sure the following requirements are met:

• The region that you wish to install self-hosting in has at least 3 EIPs available. The default quota per region in an AWS account only allows 5 EIPs to be created, so you may need to choose another region or ask for an increase. These EIPs are used as part of NAT Gateways to allow outbound traffic from Spacelift. If you want full control over your networking setup, please see advanced installations.

Accepting your License

When you sign up for self-hosting, a license will be issued to your AWS account via AWS License Manager. Before you can use your license, you need to accept it.

Navigate to AWS License Manager in your AWS Console, and go to Granted licenses:

Note: if this is your first time accessing License Manager, you may need to grant permissions to AWS before you can use it. If this is the case you will automatically be prompted to grant permission.

Click on your license ID, and then choose the Accept & activate license option on the license page:

Follow the instructions on the popup that appears to activate your license:

That’s it - you’re now ready to proceed with the rest of the installation!

Release Archive

Spacelift self-hosted is distributed as an archive containing everything needed to install Spacelift into your AWS account. The archive has the following structure:

• config.json - the configuration file containing all necessary configuration options. Some options come prepopulated with default values.
• bin - contains binaries including a copy of the launcher built for self-hosting.
• cloudformation - contains CloudFormation templates used to deploy Spacelift.
• container-images - contains container images for running the Spacelift backend as well as a launcher image.
• install.sh - the installation script.
• uninstall.sh - the uninstallation script.
• scripts - contains other scripts called by the installation script.
• version - contains the version number.

Signature Validation

Along with the release archive, we also provide a SHA-256 checksum of the archive as well as a GPG signature. The fingerprint of our GPG key is 380BD7699053035B71D027B173EBA0CF3B3F4A46, and you can import it using the following command:

gpg --recv-keys 380BD7699053035B71D027B173EBA0CF3B3F4A46

You can verify the integrity of the release archive using the following command:

sha256sum -c self-hosted-<version>.tar.gz_SHA256SUMS

And you can verify the authenticity using the following command:

gpg --verify self-hosted-<version>.tar.gz_SHA256SUMS.sig

Extraction

First, extract the release artifacts and move to the extracted directory (replacing <version> with the version you are installing):

tar -zxf self-hosted-<version>.tar.gz
cd self-hosted-<version>

Configuration

The included config.json file provides an easy way to provide additional and required configuration for the resources created during the deployment.

The mandatory fields are:

• account_name - the name of your Spacelift account. Note: the URL of your Spacelift installation doesn't necessarily need to match this name but the account name affects the URL of the module registry.
• aws_region - the AWS region you wish to install Spacelift into.
• load_balancer.certificate_arn - the ARN of the ACM certificate you created in the pre-requisites.
• spacelift_hostname - the hostname you wish to use for your Spacelift installation without the protocol or trailing slash, for example spacelift.mycorp.com.
• sso_config.admin_login - the email address of the user you wish to use as the initial admin user for your Spacelift installation.
• sso_config.sso_type - the type of SSO you wish to use. Valid values are OIDC and SAML.
• sso_config.oidc_args - if sso_type is OIDC, all fields are mandatory:
  • client_id - the OIDC client ID.
  • client_credentials - the OIDC client secret.
  • identity_provider_host - the OIDC identity provider host with protocol. Example: "https://mycorp.okta.com".
• sso_config.saml_args - if sso_type is SAML, dynamic and metadata fields are mandatory:
  • dynamic - true or false. if true then metadata must be a URL to the SAML IDP metadata. If false then metadata must be the SAML IDP metadata.
  • metadata - either the full SAML IDP metadata or the URL to the SAML IDP metadata.
  • name_id_format - SAML name identifier format, can be left empty. Valid values are TRANSIENT, EMAIL_ADDRESS or PERMANENT. Defaults to TRANSIENT.

NOTE: we recommend that you store your config.json file so that you can reuse it when upgrading to newer Spacelift versions.

Optional configuration options

Load balancer

Load balancer configuration has a mix of required and optional fields alongside some which should already be prefilled. The object itself looks like this:

"load_balancer": {
    "certificate_arn": "",
    "scheme": "internet-facing",
    "ssl_policy": "ELBSecurityPolicy-TLS-1-2-2017-01",
    "tag": {
        "key": "",
        "value": ""
    }
}

The prefilled fields are valid defaults and can be left unchanged, while the certificate_arn field is required and must be set, and the tag object is optional and can be used to set a custom tag against the load balancer resource.

The scheme can be either internet-facing or internal and defaults to internet-facing: internal load balancers can only route requests from clients with access to the VPC for the load balancer, while internet-facing load balancers can route requests from clients over the internet.

ssl_policy is the name of the security policy that defines ciphers and protocols. The default value is ELBSecurityPolicy-TLS-1-2-2017-01 which is the most recent security policy that supports TLS 1.2. For more information, see Security policies.

Database

You can configure the following options for the Spacelift Postgres database:

• database.delete_protection_enabled - whether to enable deletion protection for the database (defaults to true). Note: uninstall.sh script will disable this option before deleting the database.
• database.instance_class - the instance class of the database (defaults to db.t4g.large).

Monitoring & Alerting

As part of the self-hosting installation, we deploy a monitoring dashboard to help you monitor the health of your Spacelift installation. It is accessible via the CloudWatch UI.

Additionally, we can also create a few preconfigured alerts for you. You can configure the following options for the CloudWatch alarms:

"alerting": {
    "sns_topic_arn": ""
}

If an SNS topic ARN is configured, we'll create an SNS subscription for each alarm. If left empty, we won't create any alarms, only the monitoring dashboard.

Important! Your SNS topic's access policy must allow the cloudwatch.amazonaws.com service principal to publish to the topic. An example access policy:

{
  "Sid": "Allow_Publish_Alarms",
  "Effect": "Allow",
  "Principal": {
    "Service": "cloudwatch.amazonaws.com"
  },
  "Action": "sns:Publish",
  "Resource": "<sns-topic-arn>"
}

Global tags

You can add additional tags to all the resources created by the installer by adding your desired tags to the global_resources_tags array in the config.json:

"global_resource_tags": [
    {
        "key": "selfhost",
        "value": "spacelift"
    }
]

Identity Provider

URLs

You may need certain URLs when configuring an application in your identity provider. For SAML, use the following URLs:

• Single Sign-On URL: https://<spacelift-hostname>/saml/acs
• Entity ID (audience): https://<spacelift-hostname>/saml/metadata

For OIDC, use the following URL:

• Authorized redirect URL: https://<spacelift-hostname>/oidc/exchange

NOTE: please make sure to substitute <spacelift-hostname> with the hostname you plan to use for your Spacelift install.

SAML Metadata

If you are using non-dynamic SAML metadata rather than using a dynamic metadata URL, you need to ensure that the metadata provided is a valid JSON-escaped string. One way to do this is to use jq to escape your metadata. For example, if your metadata was contained in a file called metadata.xml, you could run the following command:

cat metadata.xml| jq -R -s '.'

You would then enter the escaped string into your config.json file:

"saml_args": {
    "metadata": "<?xml version=\"1.0\" encoding=\"utf-8\"?><EntityDescriptor ID=\"_90756ab2...",
    "dynamic": false,
    "name_id_format": "EMAIL_ADDRESS"
}

Updating identity provider during installs and upgrades

The installer will set up the identity provider the first time you install Spacelift. Subsequent upgrades won't change it even if you have changed the configuration file. This is to prevent accidental changes to the identity provider configuration.

There are two way to update an existing identity provider:

• Run the update-sso-settings.sh script that you can find below
• Set sso_config.update_on_install to true in the configuration file. This will force the installer to update the identity provider configuration even during upgrades.

Running the installer

This section covers simple installations using a Spacelift-created VPC and a public facing HTTP load balancer. For information about using an existing VPC please see advanced installations.

To run the installer, pass in the path of the configuration file:

./install.sh [-c "<configuration file>"]

The -c flag is optional, it defaults to config.json if not specified.

When the installer starts, it will check it can connect to your AWS account, and will ask for confirmation to continue. Please check the AWS account ID is correct, and if so enter yes:

./install.sh
[2023-01-24T12:17:52+0000] INFO: installing version v0.0.6 of Spacelift into AWS account 123456789012

Are you sure you want to continue? Only 'yes' will be accepted: yes

Please note, the installation process can take between 10 and 20 minutes to create all of the required infrastructure for Spacelift.

Troubleshooting

If you see the following error message indicating that the account could not be found, please check the credentials for your AWS CLI are correctly configured:

ERROR: could not find AWS account ID. Cannot continue with Spacelift install. Please check that your AWS CLI credentials are correct and have not expired.

This error message can also be displayed if your AWS credentials are connected to a GovCloud account but a non-GovCloud region has been specified in the aws_region configuration option.

Setting up DNS entries

Once the installer has completed, you should see output similar to the following, providing you with the DNS address of the load balancer along with the Launcher container image URL:

Installation info:

  * Load balancer DNS: spacelift-server-1234567890.eu-west-1.elb.amazonaws.com
  * Launcher container image: 123456789012.dkr.ecr.eu-west-1.amazonaws.com/spacelift-launcher:v0.0.6

[2023-01-24T11:30:59+0000] INFO: Spacelift version v0.0.6 has been successfully installed!

Please use the Load balancer DNS to setup a CNAME entry or an A record using an alias. This entry should point from the hostname you want to use for Spacelift (e.g. spacelift.saturnhead.io) to the Spacelift Load Balancer.

Once your DNS changes propagate, you should be able to login to your instance by navigating to its hostname (for example https://spacelift.saturnhead.io). Assuming everything has been successful, you should see a welcome screen similar to the following:

Creating your first worker pool

Before you can create stacks or trigger any runs, you need a worker pool. For more information please see our worker pools page.

Updating existing SSO configuration

If you already have an existing SSO configuration and want to update it, you need to update the sso_config section of the configuration file and run the update script:

./scripts/update-sso-settings.sh [-c "<configuration file>"]

It will run the ECS task that will update the SSO configuration.

Upgrading

To upgrade to the latest version of self-hosting, follow these steps:

1. Make sure your config.json file is fully configured to match your existing installation. Ideally you should use the config file from your previous installation.
2. Run ./install.sh.
3. Deploy the latest version of the CloudFormation worker pool template, and restart any workers connected to your Spacelift installation to make sure they're running the latest version.

Uninstalling

If you want to completely uninstall Spacelift, you can use the uninstall.sh script. By default, the script will retain S3 buckets, database and KMS keys so that they can be restored later.

To run the uninstall script, use the following command, specifying your AWS region:

./uninstall.sh [-c <config-file>] [-f | -n | -h]

Flags:

• -c <config-file>: path to the config file (default: config.json)
• -f: force uninstallation, do not prompt for confirmation
• -n: do not retain S3 buckets, database or KMS keys. complete uninstallation.
• -h: show help

For example:

./uninstall.sh