Secure an API with Tyk Operator

Last updated: Sep 10, 2024 3 minutes read.

Introduction

A security policy encapsulates several options that can be applied to a key. It acts as a template that can override individual sections of an API key (or identity) in Tyk.

See What is a Security Policy?

Tutorial: Create a Policy with Tyk Operator

Step 1: Create a SecurityPolicy resource in YAML format

Create a file called ratelimit.yaml, then add the following:

apiVersion: tyk.tyk.io/v1alpha1
kind: SecurityPolicy
metadata:
  name: httpbin
spec:
  name: Rate Limit, Quota and Throttling policy
  state: active
  active: true
  access_rights_array:
    - name: httpbin
      namespace: default
      versions:
        - Default
  quota_max: 10
  quota_renewal_rate: 60
  rate: 5
  per: 5
  throttle_interval: 2
  throttle_retry_limit: 2

You can link this Security Policy to any APIs you have defined in access_rights_array. In this example, the security policy is applied to httpbin API in default namespace.

Step 2: Deploy the SecurityPolicy resource

You can do so either by applying sample manifests defined in our repository, for example:

$ kubectl apply -f docs/policies/ratelimit.yaml

Or, if you don’t have the manifest with you, you can run the following command:

cat <<EOF | kubectl apply -f -
apiVersion: tyk.tyk.io/v1alpha1
kind: ApiDefinition
metadata:
  name: httpbin
spec:
  name: httpbin protected
  protocol: http
  active: true
  proxy:
    target_url: http://httpbin.org
    listen_path: /httpbin
    strip_listen_path: true
  use_standard_auth: true
  auth_configs:
    authToken:
      auth_header_name: Authorization
---
apiVersion: tyk.tyk.io/v1alpha1
kind: SecurityPolicy
metadata:
  name: httpbin
spec:
  name: Rate Limit, Quota and Throttling policy
  state: active
  active: true
  access_rights_array:
    - name: httpbin
      namespace: default
      versions:
        - Default
  quota_max: 10
  quota_renewal_rate: 60
  rate: 5
  per: 5
  throttle_interval: 2
  throttle_retry_limit: 2
EOF

To check that policy has been created, you can run the following command:

$ kubectl get securitypolicy
NAME      AGE
httpbin   10s

You have successfully created the httpbin security policy for your httpbin API.

SecurityPolicy CRD

You can use SecurityPolicy CRD to set access lists for API and versions, global usage quota, rate limits, and throttling, and also add tags and metadata:

apiVersion: tyk.tyk.io/v1alpha1
kind: SecurityPolicy            # SecurityPolicy CRD
metadata:
  name: httpbin                 # Unique k8s name
spec:
  name: Httpbin Security Policy # Generic Name
  state: active                 # View securitypolicy_types for more info
  active: true                  # View securitypolicy_types for more info
  access_rights_array:          # Adding APIs to the Policy. More info just below
    - name: httpbin             # Metadata name of API
      namespace: default
      versions:
        - Default               # Mandatory, Default is created automatically
      allowed_urls:             # Path-based permissions
        - url: /get
          methods:
            - GET
  quota_max: 10
  quota_renewal_rate: 60
  rate: 5
  per: 5
  throttle_interval: 2
  throttle_retry_limit: 2
  tags:
    - Hello
    - World
  meta_data:
    key: value
    hello: world

Required fields in the policy:

name: The name of the security policy.
active: Marks policy as active.
state: It can have value active, draft,deny.

Access lists for API and versions:

access_right_array: The list of APIs security policy has access to.

Path-based permissions for API:

allowed_urls: Restrict access per path and per method to specific portions of the API

Usage Quota fields:

quota_max: The maximum number of allowed requests over a quota period.
quota_renewal_rate: Time, in seconds, after which quota will be renewed.

Rate limiting fields:

rate: The number of the requests to allow per period.
per: Time in seconds.

Throttling fields:

throttle_interval: Interval (in seconds) between each request retry.
throttle_retry_limit: Total requests retry number.

Tags:

tags: List of tags.

Meta data:

meta_data: Metadata key and values.

You can go to the Policies page on GitHub to see all the latest Security Policies fields and features we support.