Enable the Policy Engine Plugin and connect it to your OPA server. When enabled, you can write policies that the Policy Engine enforces during save time, runtime validation, or when a user interacts with Armory Enterprise.
Enable the Policy Engine for Armory Enterprise
Requirements for using the Policy Engine
Make sure you can meet the following version requirements for the Policy Engine:
- OPA versions 0.12.x or later. Specifically, the OPA v1 API must be available.
- A supported version of Armory Enterprise
Before You Start
The Policy Engine requires an OPA server. You can either use the example on this page to deploy a server in the same Kubernetes cluster as Armory Enterprise or see the OPA documentation for information about how to deploy an OPA server.
Deploy an OPA server
The Policy Engine supports the following OPA server deployments:
- An OPA server deployed in the same Kubernetes cluster as an Armory Spinnaker deployment. The Using ConfigMaps for OPA policies section contains a ConfigMap you can use.
- An OPA cluster that is not in the same Kubernetes cluster as an Armory Spinnaker deployment . See the OPA documentation for more information about installing an OPA server in a separate cluster.
Using ConfigMaps for OPA Policies
If you want to use ConfigMaps for OPA policies, you can use the below manifest as a starting point. This example manifest deploys an OPA server and applies the configuration for things like rolebinding and a static DNS. When using the below example, keep the following guidelines in mind:
- The manifest does not configure any authorization requirements for the OPA server it deploys. This means that anyone can add a policy.
- The manifest deploys the OPA server to a namespace called
- The OPA server uses the following config:
"--require-policy-label=true". This configures the OPA server to look for a specific label so that it does not check all configmaps for new policies. For information about how to apply the relevant label to your policy configmaps, see Creating a policy.
Show the manifest
--- apiVersion: v1 kind: Namespace metadata: name: opa # Change this to install OPA in a different namespace --- # Grant service accounts in the 'opa' namespace read-only access to resources. # This lets OPA/kube-mgmt replicate resources into OPA so they can be used in policies. # The subject name should be `system:serviceaccounts:
` where ` ` is the namespace where OPA will be installed kind: ClusterRoleBinding apiVersion: rbac.authorization.k8s.io/v1 metadata: name: opa-viewer-spinnaker roleRef: kind: ClusterRole name: view apiGroup: rbac.authorization.k8s.io subjects: - kind: Group name: system:serviceaccounts:opa # Change this to the namespace OPA is installed in apiGroup: rbac.authorization.k8s.io --- # Define role in the `opa` namespace for OPA/kube-mgmt to update configmaps with policy status. # The namespace for this should be the namespace where policy configmaps will be created kind: Role apiVersion: rbac.authorization.k8s.io/v1 metadata: namespace: opa # Change this to the namespace where policies will live name: configmap-modifier rules: - apiGroups: [""] resources: ["configmaps"] verbs: ["update", "patch"] --- # Bind the above role to all service accounts in the `opa` namespace # The namespace for this should be the namespace where policy configmaps will be created # The subject name should be `system:serviceaccounts: ` where ` ` is the namespace where OPA will be installed kind: RoleBinding apiVersion: rbac.authorization.k8s.io/v1 metadata: namespace: opa # Change this to the namespace where policies will live name: opa-configmap-modifier roleRef: kind: Role name: configmap-modifier apiGroup: rbac.authorization.k8s.io subjects: - kind: Group name: system:serviceaccounts:opa # Change this to the namespace OPA is installed in apiGroup: rbac.authorization.k8s.io --- apiVersion: apps/v1 kind: Deployment metadata: name: opa-deployment namespace: opa # Change this to the namespace OPA is installed in labels: app: opa spec: replicas: 1 selector: matchLabels: app: opa template: metadata: labels: app: opa spec: containers: # WARNING: OPA is NOT running with an authorization policy configured. This # means that clients can read and write policies in OPA. If you are # deploying OPA in an insecure environment, be sure to configure # authentication and authorization on the daemon. See the Security page for # details: https://www.openpolicyagent.org/docs/security.html. - name: opa image: openpolicyagent/opa:0.28.0 args: - "run" - "--server" - "--addr=http://0.0.0.0:8181" readinessProbe: httpGet: path: /health scheme: HTTP port: 8181 initialDelaySeconds: 3 periodSeconds: 5 livenessProbe: httpGet: path: /health scheme: HTTP port: 8181 initialDelaySeconds: 3 periodSeconds: 5 - name: kube-mgmt image: openpolicyagent/kube-mgmt:0.9 args: # Change this to the namespace where you want OPA to look for policies - "--policies=opa" # Configure the OPA server to only check ConfigMaps with the relevant label - "--require-policy-label=true" --- # Create a static DNS endpoint for Spinnaker to reach OPA apiVersion: v1 kind: Service metadata: name: opa namespace: opa # Change this to the namespace OPA is installed in spec: selector: app: opa ports: - protocol: TCP port: 8181 targetPort: 8181
Enabling the Policy Engine
Armory recommends using the plugin. To migrate to the plugin from the extension, see Migrating to the Policy Engine Plugin. For information about making configuration changes to a Policy Engine Extension instance that already exists, see the extension page.
Migrating to the Policy Engine Plugin
To migrate to the Policy Engine Plugin from the extension, perform the following steps:
Turn off the Policy Engine extension. You cannot run both the extension and plugin at the same time. You must disable the extension project and then enable the plugin.
- Halyard: Remove the following snippet from
armory: opa: enabled: true url: <OPA Server URL>:<port>/v1
- Operator: Remove the
opablocks from the Front50 and Clouddriver sections of your
apiVersion: spinnaker.armory.io/v1alpha2 kind: SpinnakerService metadata: name: spinnaker spec: spinnakerConfig: profiles: front50: #Enables Save time validation of policies armory: opa: enabled: true url: <OPA Server URL>:<port>/v1 clouddriver: #Enables Runtime validation of policies armory: opa: enabled: true url: <OPA Server URL>:<port>/v1
If you redeploy Armory Enterprise and apply these changes before you enable the Policy Engine Plugin, no policies get enforced.
- Halyard: Remove the following snippet from
Enable the Policy Engine Plugin. If you have an existing OPA server with policies that you want to use, you can provide that OPA server in the plugin configuration. You do not need to create a new OPA server or migrate your policies.
This feature is deprecated. Use the Policy Engine Plugin instead.
Was this page helpful?
Thank you for letting us know!
Sorry to hear that. Please tell us how we can improve.
Last modified December 10, 2021: (556c295)