Gateway on K8s

Akeyless Gateway can be deployed on a K8s cluster using the Helm package manager.

Akeyless provides a Helm chart to bootstrap the Gateway deployment.

In the case of K8s deployment, the configuration process takes place before the actual installation.

Prerequisites

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Note:

Make sure that this server is not globally opened to the public network. Akeyless Gateway requires only connections to Akeyless SaaS Core Services.

  • The following ports need to be open on the cluster only for internal network access:
ServicePort
Gateway Configuration Manager8000
Gateway Console18888
HVP8200
Akeyless V1 REST API8080
Akeyless V2 REST API8081
KMIP Server5696

Helm Chart configuration

  1. Add the following repository to your Helm repository list:
helm repo add akeyless https://akeylesslabs.github.io/helm-charts
helm repo update
  1. Fetch the values.yaml file from Akeyless repository:
helm show values akeyless/akeyless-api-gateway > values.yaml
  1. Use your favorite editor to set the relevant parameters in the values.yaml file:
vi values.yaml

Authentication

To set your Gateway with a default Authentication Methods to control the level of access your Gateway instance will have inside your Akeyless account.

The following Authentication Methods are supported for K8s deployments:

API Key Authentication

To set your Gateway default authentication based on API Key, provide the relevant Access ID and Access Key :

akeylessUserAuth:
  # adminAccessId is required field, supported types: access_key,password or cloud identity(aws_iam/azure_ad/gcp_gce)
  adminAccessId: <API Key Access ID>
  adminAccessKey: <Access Key>

Save the file and proceed with the installation instructions.

CSP IAM Authentication

While running your K8s cluster inside your cloud environment, you can use AWS IAM, GCP, or Azure Active Directory, using machine-to-machine authentication between Akeyless and your Cloud Service Provider with a list of admin users that will be able to manage your Gateway.

Set the adminAccessId with your IAM Authentication Method Access ID, where you can define a list of users that will be able to manage your Gateway setting the allowedAccessPermissions field with any other Access ID of your SAML ,OIDC or an API Key as described here.

AWS IAM

AWS IAM can be used in the following approaches:

  • Instance IAM Role

  • Service Account IAM Role

In both cases, provide your AWS IAM Auth Method's Access ID as your adminAccessId, and at least one other Access ID in the allowedAccessPermissions section - to provide human users access to config and manage your Gateway:

akeylessUserAuth:
  adminAccessId: <AWS IAM Access ID>
  allowedAccessPermissions: {}

When working from an AWS instance with an IAM Role associated with it (which is the default state for EKS clusters that leverage the IAM Role of their Node group), nothing else is required - as the Gateway will be leveraging the IAM Role of the AWS instance itself where K8s is running.

Alternatively, you can also leverage an IAM Role assumed by a K8s Service Account in your Cluster. For that, you must either create an IAM Role bound to a K8s Service Account, or use an existing IAM role for annotating the Service Account in the Gateway's values.yaml helm-chart:
Set the serviceAccountName with the desired Kubernetes Service Account name, and set its eks.amazonaws.com/role-arn annotation to the ARN of the IAM Role in question (which is constructed using the following format: arn:aws:iam::<AWS-Account-ID>:role/<IAM-Role-Name>).

You can also create a new Service Account by simply setting the create field to true, so the serviceAccountName you defined will be created upon deployment. Furthermore, if the serviceAccountName is left empty, by default - the chart will create a new Service Account called <release name>-akeyless-gateway.
Make sure to set the required role-arn annotation to connect your IAM Role with the Service Account in any of the scenarios.

deployment:
  annotations: {}
  labels: {}
  service_account:
    create: true
    serviceAccountName: <EKS SA name>
    annotations:
        eks.amazonaws.com/role-arn: arn:aws:iam::<AWS Account ID>:role/<IAM Role Name>
akeylessUserAuth:
  adminAccessId: <AWS IAM Access ID>
  allowedAccessPermissions: {}

Save the file and proceed with the installation instructions.

GCP GCE

Google Kubernetes Engine (GKE) can run Akeyless Gateway in its secured and managed Kubernetes service in standard or autopilot mode.

Deploying Akeyless Gateway via the Helm chart using the authentication between your Gateway and Akeyless SaaS using our GCP Authentication method can be done using the GCP Workload Identity mechanism.

Workload Identity allows workloads in your GKE clusters to impersonate Identity and Access Management (IAM) Service Accounts to access Google Cloud services. Workload Identity is enabled by default on Autopilot clusters.

Follow the GKE workload identities guide to enable GKE workload identities on your cluster.

Create a Kubernetes service account for Akeyless Gateway to use. You can also use the default Kubernetes service account in the default or any existing namespace.

Use the existing IAM service account as provided in your GCP GCE auth method.

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Note

When authenticating from a pod inside a Google Kubernetes Engine (GKE) cluster using GKE Workload Identity enabled, any bounded rules other than Bound Service Accounts will not apply. GKE Workload Identity conceals metadata information about the running instance.

To work with the GKE Workload Identity you must configure only the Bound Service Accounts field in your GCP Auth Method.

Allow the Kubernetes service account to impersonate the IAM service account by adding an IAM policy binding between the two service accounts. This binding allows the Kubernetes service account to act as the IAM service account.

Replace the following:
PROJECT_ID: your Google Cloud project ID.
GSA_NAME : the name of your IAM service account.
GSA_PROJECT: the project ID of the Google Cloud project of your IAM service account.
KSA_NAME: the name of your new Kubernetes service account.
NAMESPACE: the name of the Kubernetes namespace for the service account.

gcloud iam service-accounts add-iam-policy-binding GSA_NAME@GSA_PROJECT.iam.gserviceaccount.com \
    --role roles/iam.workloadIdentityUser \
    --member "serviceAccount:PROJECT_ID.svc.id.goog[NAMESPACE/KSA_NAME]"

Annotate the Kubernetes service account with the email address of the IAM service account.

kubectl annotate serviceaccount KSA_NAME \
    --namespace NAMESPACE \
    iam.gke.io/gcp-service-account=GSA_NAME@GSA_PROJECT.iam.gserviceaccount.com

Set the relevant K8s serviceAccountName or leave it empty to use the default K8s Service Account, update the annotations, and enable the nodeSelector to schedule the workloads on nodes that use Workload Identity and to use the annotated Kubernetes service account.

And set your GCP GCE Access ID as your adminAccessId and at least one another Access ID in the allowedAccessPermissions section, to provide human users access to config and manage your Gateway:

deployment:
  annotations: {}
  labels: {}
  service_account:
    create: false
    serviceAccountName: <GKE SA Name>
   annotations:
        iam.gke.io/gcp-service-account: <GCP SA Name>
  nodeSelector:
         iam.gke.io/gke-metadata-server-enabled: "true"    
akeylessUserAuth:
  adminAccessId: <GCP GCE Access ID>
  allowedAccessPermissions: {}

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NodeSelector

For Autopilot clusters, omit the nodeSelector field. Autopilot rejects this nodeSelector because all nodes use Workload Identity.

Save the file and proceed with the installation instructions.

Azure Active Directory

Azure AD authentication is provided to AKS clusters with OpenID Connect. OpenID Connect is an identity layer built on top of the OAuth 2.0 protocol. Akeyless treats Azure as a trusted third party and verifies entities based on a JWT signed by the Azure Active Directory for the configured tenant.

Set your Azure Active Directory Access ID as your adminAccessId and at least one another Access ID in the allowedAccessPermissions section, to provide human users access to config and manage your Gateway:

akeylessUserAuth:
  # adminAccessId is required field, supported types: access_key,password or cloud identity(aws_iam/azure_ad/gcp_gce)
  adminAccessId: < Azure AD Access ID>
  allowedAccessPermissions: {}

Save the file and proceed with the installation instructions.

Universal Identity

Akeyless support Universal Identity authentication method for on-premise K8s cluster environments, eliminating the secret zero problems within your config files.

Set the adminUIDInitToken field with your initial root Universal Identity token. Set the rotation interval and choose either to generate a child token for your pods using uidCreateChildTokenPerPod field.

akeylessUserAuth:
  adminUIDInitToken: u-xxxxxxxxxxxx
universalIdentity:
  # interval im minutes, if empty the token will be rotated in token-ttl/3  max=10 
  uidRotationInterval: "5m" 
  uidCreateChildTokenPerPod: "disable"

Save the file and proceed with the installation instructions.

Certificates

To set your Gateway default authentication based on Certificates provide the relevant Access ID as your adminAccessId, with a base64 encoded Certificate, and Certificate Key, with at least one another Access ID in the allowedAccessPermissions section, to provide human users access to config and manage your Gateway:

akeylessUserAuth:
  adminAccessId: <Access ID>
  adminBase64Certificate: <Base64 Certificate>
  adminBase64CertificateKey: <Base64 Cert key>
  allowedAccessPermissions: {}

Alternatively, you can provide the certificate and your certificate key as k8s secrets, as described in this guide.

Gateway Admins

To support local management of your Gateway configuration, you can set a list of Access ID that will be able to log in and manage your Gateway. This setting can also work with Sub-Claims (when a shared authentication method is used), where for each entry you need to define a unique name which should describe the Access Permission object, with an access-id , sub_claims when applicable, and a list of permissions.

For example:

  allowedAccessPermissions: 
    - name: Administrators
      access_id: p-yyyyyy
      sub_claims:
        email:
          - [email protected]
          - [email protected]
        group:
          - Devops
      permissions:
        - admin

In this case, the above will create an Access Permission object named Administrators, associated with an Auth method p-yyyyyy which for example is your SAML or OIDC Access ID, where a user that at least matches one Sub-Claims attribute, will be authorized to access the Gateway with Admin permissions:

In our example, [email protected] and test02@testhost will be authorized, and any member of group=Devops will also be authorized.

In this case, the Access ID belongs to the authentication method created for the certain Identity Provider.
If you don't specify the sub-claims, every user authenticated by this IdP will be able to log in to the Gateway with admin privileges.

To work with API Key as an allowedAccessPermissions simply provide your API Key Access ID with a name for the Access Permission object, with a set of permissions.

Access Permissions

To delegate the exact permissions users will have on your Gateway components you can explicitly grant permissions, for example, to grant permissions to a user to manage only your Gateway Log Forwarding settings:

  allowedAccessPermissions: 
    - name: Administrators
      access_id: p-yyyyyy
      sub_claims:
        email:
          - [email protected]
          - [email protected]
        group:
          - Devops
      permissions:
        - admin
    - name: LogForwarding
      access_id: p-xxxxxx
      sub_claims:
        email:
          - email=[email protected]
      permissions:
        - log_forwarding

In the above example, your Gateway Admins are [email protected],[email protected] or any user which is part of your Devops group in your IdP, where [email protected] have permission to manage only your Gateway Log Forwarding settings.

Full list of available permissions:

PermissionDescription
defaultsManagement of the defaults settings of your Gateway
Including Defualt Encryption Key & Defualt AccessID for login.
targetsManagement of all Targets items that were created using your Gateway
classic_keysManagement of Classic Keys
automatic_migrationManagement of Dynamic Secrets settings
dynamic_secretManagement of Dynamic Secrets
rotated_secretManagement of Rotated Secrets
log_forwardingManagement of Log Forwarding settings
zero_knowledge_encryptionManagement of Zero-Knowledge
cachingManagement of Gateway Cache settings
event_forwardingManagement of Event Forwarding settings
ladp_authManagement of LDAP Auth Gateway configuration.
k8s_authManagement of Kubernetes Auth Gateway configuration
kmipManagement of KMIP Servers
generalManagement of Gateway General settings including GatewayUrl,TLS
adminAdmin permission can manage all Gateway components, including Access Permissions

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Note

Only Gateway Admins can delegate permissions to additional users. Any pre-provisioned settings will not be editable from the Akeyless Console.

You may also edit this parameter on your console, by going to the Gateways tab and selecting the desired Gateway. On the right of the screen, you will see the Gateway details, including Access Permissions.

CBA

To work with CBA flow for your Gateway-allowed users, In addition to the list of allowedAccessPermissions you provided, set your chart with the enableSniProxy: true setting under the TLSConf section as follow:

TLSConf:
  enableSniProxy: true

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Note:

All changes to allowed access IDs, such as editing, removing, and so on, can only be performed on post-deployment allowed access IDs. If an ID was defined during deployment it can't be removed or changed.

Installation

  1. To install the Gateway using the edited values.yaml file, run the following command:
helm install gw akeyless/akeyless-api-gateway -f values.yaml
  1. Check if the pods are up and running:
kubectl get pod

NAME                                       READY   STATUS    RESTARTS       AGE
gw-akeyless-api-gateway-6554f7c66c-56fgs   1/1     Running   0   						5s
gw-akeyless-api-gateway-6554f7c66c-7jt8r   1/1     Running   0              5s
  1. Log in to the Gateway using your browser: http://Your-Akeyless-Gateway-URL:8000 - with your Gateway admin credentials.

Upgrade Gateway

To upgrade your Gateway, when working with a specific version, first edit the version in your values.yaml file for example:

# Akeyless API Gateway application version
 version: 3.36.2 # Or any other version number

Update the helm repo and upgrade the helm deployment.

helm repo update
helm upgrade gw akeyless/akeyless-api-gateway -f values.yaml

Check that the new pods are starting.