Configure your AWS credentials and region environment variables for use in other GitHub Actions. This action implements the AWS SDK credential resolution chain and exports environment variables for your other Actions to use. Environment variable exports are detected by both the AWS SDKs and the AWS CLI for AWS API calls.
If you use OIDC, you may need to update your identity provider
There are now two possible intermediary certificates for the Actions SSL certificate. Previously, the certificate with the thumbprint 6938fd4d98bab03faadb97b34396831e3780aea1 was guaranteed to return. Now, the certificate with the thumbprint 1c58a3a8518e8759bf075b76b750d4f2df264fcd can also be returned, so you will need to update your identity provider with this additional new thumbprint.
We support four methods for fetching credentials from AWS, but we recommend that you use GitHub's OIDC provider in conjunction with a configured AWS IAM Identity Provider endpoint.
To do that, you would add the following step to your workflow:
- name: Configure AWS Credentials
uses: aws-actions/configure-aws-credentials@v2
with:
role-to-assume: arn:aws:iam::123456789100:role/my-github-actions-role
aws-region: us-east-2This will cause the action to perform an AssumeRoleWithWebIdentity call and
return temporary security credentials for use by other actions. In order for
this to work, you'll need to preconfigure the IAM IdP in your AWS account
(see Assuming a Role for details).
You can use this action with the AWS CLI available in GitHub's hosted virtual environments or run this action multiple times to use different AWS accounts, regions, or IAM roles in the same GitHub Actions workflow. As an example, here is a complete workflow file that uploads artifacts to Amazon S3.
jobs:
deploy:
name: Upload to Amazon S3
runs-on: ubuntu-latest
# These permissions are needed to interact with GitHub's OIDC Token endpoint.
permissions:
id-token: write
contents: read
steps:
- name: Checkout
uses: actions/checkout@v3
- name: Configure AWS credentials from Test account
uses: aws-actions/configure-aws-credentials@v2
with:
role-to-assume: arn:aws:iam::111111111111:role/my-github-actions-role-test
aws-region: us-east-1
- name: Copy files to the test website with the AWS CLI
run: |
aws s3 sync . s3://my-s3-test-website-bucket
- name: Configure AWS credentials from Production account
uses: aws-actions/configure-aws-credentials@v2
with:
role-to-assume: arn:aws:iam::222222222222:role/my-github-actions-role-prod
aws-region: us-west-2
- name: Copy files to the production website with the AWS CLI
run: |
aws s3 sync . s3://my-s3-prod-website-bucketSee action.yml for the full documentation for this action's inputs and outputs.
We recommend following Amazon IAM best practices for the AWS credentials used in GitHub Actions workflows, including:
- Do not store credentials in your repository's code.
- Grant least privilege to the credentials used in GitHub Actions workflows. Grant only the permissions required to perform the actions in your GitHub Actions workflows.
- Monitor the activity of the credentials used in GitHub Actions workflows.
There are four different supported ways to retrieve credentials. We recommend
using GitHub's OIDC provider
to get short-lived credentials needed for your actions. Specifying
role-to-assume without providing an aws-access-key-id or a
web-identity-token-file, or setting role-chaining, will signal to the action that you wish to use the
OIDC provider. If role-chaining is true, existing credentials in the environment will be used to assume role-to-assume.
The following table describes which identity is used based on which values are supplied to the Action:
| Identity Used | aws-access-key-id |
role-to-assume |
web-identity-token-file |
role-chaining |
|---|---|---|---|---|
| [✅ Recommended] Assume Role directly using GitHub OIDC provider | ✔ | |||
| IAM User | ✔ | |||
| Assume Role using IAM User credentials | ✔ | ✔ | ||
| Assume Role using WebIdentity Token File credentials | ✔ | ✔ | ||
| Assume Role using existing credentials | ✔ | ✔ |
The default session duration is 1 hour when using the OIDC provider to
directly assume an IAM Role or when an aws-session-token is directly provided.
The default session duration is 6 hours when using an IAM User to assume an
IAM Role (by providing an aws-access-key-id, aws-secret-access-key, and a
role-to-assume) .
If you would like to adjust this you can pass a duration to role-duration-seconds, but the duration cannot exceed the maximum that was defined when the IAM Role was created.
The default session name is GitHubActions, and you can modify it by specifying the desired name in role-session-name.
The default audience is sts.amazonaws.com which you can replace by specifying the desired audience name in audience.
- name: Configure AWS Credentials
uses: aws-actions/configure-aws-credentials@v2
with:
aws-region: us-east-2
role-to-assume: arn:aws:iam::123456789100:role/my-github-actions-role
role-session-name: MySessionNameIn this example, the Action will load the OIDC token from the GitHub-provided environment variable and use it to assume the role arn:aws:iam::123456789100:role/my-github-actions-role with the session name MySessionName.
- name: Configure AWS Credentials
uses: aws-actions/configure-aws-credentials@v2
with:
aws-region: us-east-2
role-to-assume: arn:aws:iam::123456789100:role/my-github-actions-role
role-session-name: MySessionName
- name: Configure other AWS Credentials
uses: aws-actions/configure-aws-credentials@v2
with:
aws-region: us-east-2
role-to-assume: arn:aws:iam::987654321000:role/my-second-role
role-session-name: MySessionName
role-chaining: trueIn this two-step example, the first step will use OIDC to assume the role arn:aws:iam::123456789100:role/my-github-actions-role just as in the prior example. Following that, a second step will use this role to assume a different role, arn:aws:iam::987654321000:role/my-second-role.
- name: Configure AWS Credentials
uses: aws-actions/configure-aws-credentials@v2
with:
aws-access-key-id: ${{ secrets.AWS_ACCESS_KEY_ID }}
aws-secret-access-key: ${{ secrets.AWS_SECRET_ACCESS_KEY }}
aws-region: us-east-2
role-to-assume: ${{ secrets.AWS_ROLE_TO_ASSUME }}
role-external-id: ${{ secrets.AWS_ROLE_EXTERNAL_ID }}
role-duration-seconds: 1200
role-session-name: MySessionNameIn this example, the secret AWS_ROLE_TO_ASSUME contains a string like arn:aws:iam::123456789100:role/my-github-actions-role. To assume a role in the same account as the static credentials, you can simply specify the role name, like role-to-assume: my-github-actions-role.
- name: Configure AWS Credentials for Beta Customers
uses: aws-actions/configure-aws-credentials@v2
with:
audience: beta-customers
aws-region: us-east-3
role-to-assume: arn:aws:iam::123456789100:role/my-github-actions-role
role-session-name: MySessionNameIn this example, the audience has been changed from the default to use a different audience name beta-customers. This can help ensure that the role can only affect those AWS accounts whose GitHub OIDC providers have explicitly opted in to the beta-customers label.
Changing the default audience may be necessary when using non-default AWS partitions.
- name: Configure AWS Credentials
uses: aws-actions/configure-aws-credentials@v2
with:
aws-region: us-east-2
role-to-assume: arn:aws:iam::123456789100:role/my-github-actions-role
role-session-name: MySessionName
mask-aws-account-id: falseIn this example, account ID masking has been disabled. By default, the AWS account ID will be obscured in the action's output. This may be helpful when debugging action failures.
If you choose to use GitHub's OIDC provider, you must first set up federation with the provider in as an IAM IdP. The GitHub OIDC provider only needs to be created once per account (i.e. multiple IAM Roles that can be assumed by the GitHub's OIDC can share a single OIDC Provider).
This CloudFormation template will configure the IdP for you.
Parameters:
GitHubOrg:
Description: Name of GitHub organization/user (case sensitive)
Type: String
RepositoryName:
Description: Name of GitHub repository (case sensitive)
Type: String
OIDCProviderArn:
Description: Arn for the GitHub OIDC Provider.
Default: ""
Type: String
OIDCAudience:
Description: Audience supplied to configure-aws-credentials.
Default: "sts.amazonaws.com"
Type: String
Conditions:
CreateOIDCProvider: !Equals
- !Ref OIDCProviderArn
- ""
Resources:
Role:
Type: AWS::IAM::Role
Properties:
AssumeRolePolicyDocument:
Statement:
- Effect: Allow
Action: sts:AssumeRoleWithWebIdentity
Principal:
Federated: !If
- CreateOIDCProvider
- !Ref GithubOidc
- !Ref OIDCProviderArn
Condition:
StringEquals:
token.actions.githubusercontent.com:aud: !Ref OIDCAudience
StringLike:
token.actions.githubusercontent.com:sub: !Sub repo:${GitHubOrg}/${RepositoryName}:*
GithubOidc:
Type: AWS::IAM::OIDCProvider
Condition: CreateOIDCProvider
Properties:
Url: https://token.actions.githubusercontent.com
ClientIdList:
- sts.amazonaws.com
ThumbprintList:
- 6938fd4d98bab03faadb97b34396831e3780aea1
- 1c58a3a8518e8759bf075b76b750d4f2df264fcd
Outputs:
Role:
Value: !GetAtt Role.Arn To align with the Amazon IAM best practice of
granting least privilege, the assume role policy document should contain a
Condition that specifies a subject allowed to assume the role. Without a subject
condition, any GitHub user or repository could potentially assume the role. The
subject can be scoped to a GitHub organization and repository as shown in the
CloudFormation template. Additional claim conditions can be added for higher
specificity as explained in the
GitHub documentation.
Due to implementation details, not every OIDC claim is presently supported by
IAM.
For further information on OIDC and GitHub Actions, please see:
- AWS docs: Creating OpenID Connect (OIDC) identity providers
- AWS docs: IAM JSON policy elements: Condition
- GitHub docs: About security hardening with OpenID Connect
- GitHub docs: Configuring OpenID Connect in Amazon Web Services
- GitHub changelog: GitHub Actions: Secure cloud deployments with OpenID Connect
The session will have the name "GitHubActions" and be tagged with the following
tags: (GITHUB_ environment variable definitions can be
found here)
| Key | Value |
|---|---|
| GitHub | "Actions" |
| Repository | GITHUB_REPOSITORY |
| Workflow | GITHUB_WORKFLOW |
| Action | GITHUB_ACTION |
| Actor | GITHUB_ACTOR |
| Branch | GITHUB_REF |
| Commit | GITHUB_SHA |
Note: all tag values must conform to
the requirements.
Particularly, GITHUB_WORKFLOW will be truncated if it's too long. If
GITHUB_ACTOR or GITHUB_WORKFLOW contain invalid characters, the characters
will be replaced with an '*'.
The action will use session tagging by default during role assumption.
Note that for WebIdentity role assumption, the session tags have to be included
in the encoded WebIdentity token. This means that Tags can only be supplied by
the OIDC provider and not set during the AssumeRoleWithWebIdentity API call
within the Action. You can skip this session tagging by providing
role-skip-session-tagging as true in the action's inputs:
uses: aws-actions/configure-aws-credentials@v2
with:
role-skip-session-tagging: trueAn IAM policy in stringified JSON format that you want to use as an inline session policy. Depending on preferences, the JSON could be written on a single line like this:
uses: aws-actions/configure-aws-credentials@v2
with:
inline-session-policy: '{"Version":"2012-10-17","Statement":[{"Sid":"Stmt1","Effect":"Allow","Action":"s3:List*","Resource":"*"}]}'Or we can have a nicely formatted JSON as well:
uses: aws-actions/configure-aws-credentials@v2
with:
inline-session-policy: >-
{
"Version": "2012-10-17",
"Statement": [
{
"Sid":"Stmt1",
"Effect":"Allow",
"Action":"s3:List*",
"Resource":"*"
}
]
}The Amazon Resource Names (ARNs) of the IAM managed policies that you want to use as managed session policies. The policies must exist in the same account as the role. You can pass a single managed policy like this:
uses: aws-actions/configure-aws-credentials@v2
with:
managed-session-policies: arn:aws:iam::aws:policy/AmazonS3ReadOnlyAccessAnd we can pass multiple managed policies likes this:
uses: aws-actions/configure-aws-credentials@v2
with:
managed-session-policies: |
arn:aws:iam::aws:policy/AmazonS3ReadOnlyAccess
arn:aws:iam::aws:policy/AmazonS3OutpostsReadOnlyAccessIf you run your GitHub Actions in a self-hosted runner that already has access to AWS credentials, such as an EC2 instance, then you do not need to provide IAM user access key credentials to this action. We will use the standard AWS JavaScript SDK credential resolution methods to find your credentials, so if the AWS JS SDK can authenticate on your runner, this Action will as well.
If no access key credentials are given in the action inputs, this action will use credentials from the runner environment using the default methods for the AWS SDK for Javascript.
You can use this action to simply configure the region and account ID in the environment, and then use the runner's credentials for all AWS API calls made by your Actions workflow:
uses: aws-actions/configure-aws-credentials@v2
with:
aws-region: us-east-2In this case, your runner's credentials must have permissions to call any AWS APIs called by your Actions workflow.
Or, you can use this action to assume a role, and then use the role credentials for all AWS API calls made by your Actions workflow:
uses: aws-actions/configure-aws-credentials@v2
with:
aws-region: us-east-2
role-to-assume: my-github-actions-roleIn this case, your runner's credentials must have permissions to assume the role.
You can also assume a role using a web identity token file, such as if using Amazon EKS IRSA. Pods running in EKS worker nodes that do not run as root can use this file to assume a role with a web identity.
If you run in self-hosted environments and in secured environment where you need use a specific proxy you can set it in the action manually.
Additionally this action will always consider already configured proxy in the environment.
Manually configured proxy:
uses: aws-actions/configure-aws-credentials@v2
with:
aws-region: us-east-2
role-to-assume: my-github-actions-role
http-proxy: "http://companydomain.com:3128"Proxy configured in the environment variable:
# Your environment configuration
HTTP_PROXY="http://companydomain.com:3128"The action will read the underlying proxy configuration from the environment and you don't need to configure it in the action.
This workflow does not install the AWS CLI
into your environment. Self-hosted runners that intend to run this action prior
to executing aws commands need to have the AWS CLI
installed
if it's not already present.
Most GitHub hosted runner environments
should include the AWS CLI by default.
This code is made available under the MIT license.
If you would like to report a potential security issue in this project, please do not create a GitHub issue. Instead, please follow the instructions here or email AWS security directly.