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Connect Akto with AWS API Gateway with CloudWatch OAM

AWS API Gateway is a fully managed service from AWS that helps developers create, publish, monitor, and secure APIs at scale. By integrating AWS API Gateway with Akto, you'll automatically discover and test the security of all your REST APIs, HTTP APIs, and WebSocket APIs deployed through API Gateway, ensuring comprehensive API security across your AWS infrastructure.

To connect Akto with AWS API Gateway using CloudWatch OAM, follow these steps:

Step 1: Set Up and Configure API Gateway

1.1 Set up Akto Traffic Processor

Follow the steps mentioned here to set up the Akto Traffic Processor.

1.2 Add AWS API Gateway Connector

  1. Go to API Gateway in the AWS Console.

  2. Navigate to your API and click on Stages from the left menu.

  3. Scroll down to the Logs and tracing section and click on Edit.

  4. Select Error and info logs and Data tracing and save these settings.

  5. Find out the CloudWatch log group for your API Gateway for the stage which has the above logs enabled and save it's arn. You'll need it later.

Step 2: Linking CloudWatch OAM Accounts

Note: Follow the OAM step only if you have an EKS cluster in one account and a CloudWatch log group in another account. Otherwise, you can skip this step.

Why Use CloudWatch OAM?

CloudWatch OAM allows you to monitor and manage metrics and logs across multiple AWS accounts and regions, providing centralized visibility and simplified access management.

For more details, refer to the official AWS documentation: AWS OAM API Reference

2.1: Configure the Monitoring Account

  1. Open the CloudWatch console in the monitoring account (where your EKS cluster is located).

  2. In the left navigation bar, go to Settings.

  3. Under Monitoring account configuration, choose Configure.

  4. For Select data, choose the types of data this monitoring account will be able to view from the source accounts:

    • Logs

    • Metrics

    • (Generally, we only need logs.)

  5. Under List source accounts, enter the account IDs of the source accounts (where your CloudWatch log groups are located) that this monitoring account will view.

  6. Under Define a label to identify your source account, choose whether to use account names or email addresses.

  7. Click Configure.

2.2: Configure the Source Account

  1. In Settings, under Monitoring account configuration, go to Resources to link accounts.

  2. Choose Any account to generate a URL for linking source accounts.

  3. Copy the generated URL.

  4. Sign in to the account you want to set as a source account.

  5. Enter the copied URL in your browser to open the CloudWatch settings page.

  6. Under Select data, choose the data types that will be shared with the monitoring account:

    • Logs

    • Metrics

    • (Generally, only logs are needed, and specific logs can be filtered.)

    For more information on filtering logs, refer to: AWS Log Group Configuration.

  7. Ensure Enter monitoring account configuration ARN is not changed.

  8. Under Define a label to identify your source account, the label choice from the monitoring account is pre-filled. Optionally, choose Edit to modify it.

  9. Click Link.

  10. Enter Confirm in the box and click Confirm.

The linking process might take a few minutes to complete.

Step 3: Set Up an EKS Cluster

If you don’t have an existing EKS cluster, you can create one using the AWS Console:

  1. Go to the Amazon EKS service in the AWS Management Console.

  2. Click on Create Cluster.

  3. Provide a name for your cluster and select the Kubernetes version.

  4. Choose the networking settings (VPC, subnets, security groups).

  5. Select an IAM role for the cluster.

  6. Select an IAM role for the node.

  7. Configure other optional settings and click Create.

  8. Copy the OpenID Connect (OIDC) provider URL from the Overview section of your EKS cluster. (You can find this under EKS > Your Cluster > Overview > Details.)

Step 4: Create an IAM Role for Service Account

4.1 Create an IAM Policy

  1. Go to the IAM service in the AWS Console.

  2. Click Policies on the left panel, then click Create policy.

  3. Select JSON as Policy editor.

  4. Paste the following JSON schema in the policy editor.

    {
	"Version": "2012-10-17",
	"Statement": [
		{
			"Effect": "Allow",
			"Action": [
				"logs:DescribeLogGroups",
				"logs:DescribeLogStreams",
				"logs:GetLogEvents",
				"logs:FilterLogEvents"
			],
			"Resource": [
				"<YOUR_LOG_GROUP_ARN>"
			]
		}
	]
}

    • Replace <YOUR_LOG_GROUP_ARN> with the CloudWatch log group arn saved in Step 1.2.

  5. Click Next and review the permissions.

  6. After reviewing the permissions, click the Save Changes button.

4.2 Create an IAM Role

  1. Go to the IAM service in the AWS Console.

  2. Click Roles on the left panel, then click Create role.

  3. Select Web Identity as the trusted entity.

  4. Choose your EKS OIDC provider and enter the audience as sts.amazonaws.com.

  5. Click Next and move to the permissions step.

  6. Choose the policy we created in the previous step (4.1).

  7. Click Next, give the role a name, and create the role. (Save the role name as it will be needed later.)

4.3 Update Trust Policy

After creating the role, modify the trust policy in the Trust relationships section of the role created in the previous step.

{
    "Version": "2012-10-17",
    "Statement": [
        {
            "Effect": "Allow",
            "Principal": {
                "Federated": "arn:aws:iam::<your-account-id>:oidc-provider/oidc.eks.<your-region>.amazonaws.com/id/<your-oidc-provider-id>"
            },
            "Action": "sts:AssumeRoleWithWebIdentity",
            "Condition": {
                "StringEquals": {
                    "oidc.eks.<your-region>.amazonaws.com/id/<your-oidc-provider-id>:aud": "sts.amazonaws.com",
                    "oidc.eks.<your-region>.amazonaws.com/id/<your-oidc-provider-id>:sub": "system:serviceaccount:<your-namespace>:service-account-eks"
                }
            }
        }
    ]
}

  • Replace <your-region> with your AWS region. (Find it in the top-right corner of the AWS Console.)

  • Replace <your-account-id> with your AWS account ID. (You can find this under IAM > Account Settings.)

  • Replace <your-oidc-provider-id> with the OIDC provider ID from Step 2.

  • Replace <your-namespace> with the Kubernetes namespace where the service account will be deployed. (Use kubectl get namespaces to check existing namespaces.)

Save the trust policy.

Step 5: Attach IAM Role to EKS Service Account

  1. Create a service-account.yaml file with the following content:

    apiVersion: v1
kind: ServiceAccount
metadata:
  name: service-account-eks
  namespace: <your-namespace>
  annotations:
    eks.amazonaws.com/role-arn: arn:aws:iam::<aws-account-id>:role/<role-name>

    • Replace <aws-account-id> with your AWS account ID.

    • Replace <role-name> with the IAM role name created in Step 4.2.

    • Replace <your-namespace> with the Kubernetes namespace where the service account will be deployed (use kubectl get namespaces to check existing namespaces). This should be the same as the one used in step 4.3.

  2. Apply the service-account.yaml file to your EKS cluster using the following kubectl command: kubectl apply -f service-account.yaml

Step 6: Update the Kubernetes Deployment YAML

  1. For LOG_GROUP_NAME and AWS_REGION, use the log group arn we saved earlier and the aws region it is deployed in.

  2. For AKTO_KAFKA_BROKER_MAL, use the value of the mini-runtime service we deployed in step 1.1.

apiVersion: apps/v1
kind: Deployment
metadata:
  name: api-gateway-logging
  namespace: <your-namespace>
spec:
  replicas: 1
  selector:
    matchLabels:
        app: api-gateway-logging 
  template:
    metadata:
        labels:
          app: api-gateway-logging 
    spec:
      serviceAccountName: service-account-eks
      containers:
      - image: aktosecurity/mirror-api-logging:api-gateway-logging
        name: api-gateway-logging 
        imagePullPolicy: Always
        resources: {}
        env:
          - name: AKTO_BYTES_IN_THRESHOLD
            value: "100"
          - name: AKTO_TRAFFIC_BATCH_TIME_SECS
            value: "10"
          - name: AKTO_TRAFFIC_BATCH_SIZE
            value: "100"
          - name: AKTO_KAFKA_BROKER_MAL
            value: ""
          - name: CLOUDWATCH_READ_BATCH_SIZE
            value: "5"
          - name: LOG_GROUP_NAME
            value: ""
          - name: AWS_REGION
            value: ""

  • Replace <your-namespace> with the Kubernetes namespace used in Step 5.

Notes:

  1. For assigning an IAM role to a Kubernetes service account, you can refer here.

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