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decK
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deck file kong2kic

The kong2kic subcommand transforms Kong’s configuration files, written in the decK format, into Kubernetes manifests suitable for the Kong Ingress Controller. This tool serves as a bridge for deploying API configurations from decK files directly to a Kubernetes cluster running Kong Ingress Controller, facilitating integration into the final stages of an APIOps pipeline. Essentially, kong2kic translates the desired API configurations into a format that kubectl can deploy, ensuring that the API’s intended state is accurately reflected in the Kubernetes environment.

kong2kic integrates API management within kubernetes environments, offering support for both Gateway API and Ingress API standards. Currently supports the HTTP/HTTPS protocol.

The following table details how Kong configuration entities will be mapped to Kubernetes manifests:

decK entity K8s entity
Service Service with annotations and KongIngress for upstream section
Route Ingress (Ingress API) or HTTPRoute (Gateway API) with annotations
Global Plugin KongClusterPlugin
Plugin KongPlugin
Auth Plugins
(key-auth, hmac-auth, jwt, basic-auth, oauth2, acl, mtls-auth)		 KongPlugin and Secret with credentials section in KongConsumer
Upstream KongIngress or kongUpstreamPolicy
Consumer KongConsumer
ConsumerGroup KongConsumerGroup
Certificate kubernetes.io/tls Secret
CA Certificate generic Secret

Let’s see an example of how the following decK state file is converted to Ingress API Kubernetes manifests and Gateway API Kubernetes manifests.

services:
  - name: example-service
    url: http://example-api.com
    protocol: http
    host: example-api.com
    port: 80
    path: /v1
    retries: 5
    connect_timeout: 5000
    write_timeout: 60000
    read_timeout: 60000
    enabled: true
    plugins:
      - name: rate-limiting-advanced
        config:
          limit:
          - 5
          window_size:
          - 30
          identifier: consumer
          sync_rate: -1
          namespace: example_namespace
          strategy: local
          hide_client_headers: false
    routes:
      - name: example-route
        methods:
          - GET
          - POST
        hosts:
          - example.com
          - another-example.com
          - yet-another-example.com
        paths:
          - ~/v1/example/?$
          - /v1/another-example
          - /v1/yet-another-example
        protocols:
          - http
          - https
        headers:
          x-my-header:
            - ~*foos?bar$
          x-another-header:
            - first-header-value
            - second-header-value
        regex_priority: 1
        strip_path: false
        preserve_host: true
        https_redirect_status_code: 302
        snis:
          - example.com
        sources:
          - ip: 192.168.0.1
        plugins:
          - name: cors
            config:
              origins:
                - example.com
              methods:
                - GET
                - POST
              headers:
                - Authorization
              exposed_headers:
                - X-My-Header
              max_age: 3600
              credentials: true
          - name: basic-auth
            config:
              hide_credentials: false
consumers:
  - username: example-user
    custom_id: "1234567890"
    basicauth_credentials:
      - username: my_basic_user
        password: my_basic_password
        tags:
          - internal
    plugins:
      - name: rate-limiting-advanced
        config:
          limit:
          - 5
          window_size:
          - 30
          identifier: consumer
          sync_rate: -1
          namespace: example_namespace
          strategy: local
          hide_client_headers: false
consumer_groups:
  - name: example-consumer-group
    consumers:
      - username: example-user
    plugins:
      - name: rate-limiting-advanced
        config:
          limit:
          - 5
          window_size:
          - 30
          identifier: consumer
          sync_rate: -1
          namespace: example_namespace
          strategy: local
          hide_client_headers: false
          window_type: sliding
          retry_after_jitter_max:
          - 0

apiVersion: configuration.konghq.com/v1
config:
  hide_client_headers: false
  identifier: consumer
  limit:
  - 5
  namespace: example_namespace
  strategy: local
  sync_rate: -1
  window_size:
  - 30
kind: KongPlugin
metadata:
  annotations:
    kubernetes.io/ingress.class: kong
  name: example-service-rate-limiting-advanced
plugin: rate-limiting-advanced
---
apiVersion: configuration.konghq.com/v1
config:
  credentials: true
  exposed_headers:
  - X-My-Header
  headers:
  - Authorization
  max_age: 3600
  methods:
  - GET
  - POST
  origins:
  - example.com
kind: KongPlugin
metadata:
  annotations:
    kubernetes.io/ingress.class: kong
  name: example-service-example-route-cors
plugin: cors
---
apiVersion: configuration.konghq.com/v1
config:
  hide_credentials: false
kind: KongPlugin
metadata:
  annotations:
    kubernetes.io/ingress.class: kong
  name: example-service-example-route-basic-auth
plugin: basic-auth
---
apiVersion: configuration.konghq.com/v1
config:
  hide_client_headers: false
  identifier: consumer
  limit:
  - 5
  namespace: example_namespace
  strategy: local
  sync_rate: -1
  window_size:
  - 30
kind: KongPlugin
metadata:
  annotations:
    kubernetes.io/ingress.class: kong
  name: example-user-rate-limiting-advanced
plugin: rate-limiting-advanced
---
apiVersion: gateway.networking.k8s.io/v1
kind: HTTPRoute
metadata:
  annotations:
    konghq.com/https-redirect-status-code: "302"
    konghq.com/preserve-host: "true"
    konghq.com/regex-priority: "1"
    konghq.com/snis: example.com
    konghq.com/strip-path: "false"
  name: example-service-example-route
spec:
  hostnames:
  - example.com
  - another-example.com
  - yet-another-example.com
  parentRefs:
  - name: kong
  rules:
  - backendRefs:
    - name: example-service
      port: 80
    filters:
    - extensionRef:
        group: configuration.konghq.com
        kind: KongPlugin
        name: example-service-example-route-cors
      type: ExtensionRef
    - extensionRef:
        group: configuration.konghq.com
        kind: KongPlugin
        name: example-service-example-route-basic-auth
      type: ExtensionRef
    matches:
    - headers:
      - name: x-another-header
        type: Exact
        value: first-header-value,second-header-value
      - name: x-my-header
        type: RegularExpression
        value: foos?bar$
      method: GET
      path:
        type: RegularExpression
        value: /v1/example/?$
  - backendRefs:
    - name: example-service
      port: 80
    filters:
    - extensionRef:
        group: configuration.konghq.com
        kind: KongPlugin
        name: example-service-example-route-cors
      type: ExtensionRef
    - extensionRef:
        group: configuration.konghq.com
        kind: KongPlugin
        name: example-service-example-route-basic-auth
      type: ExtensionRef
    matches:
    - headers:
      - name: x-another-header
        type: Exact
        value: first-header-value,second-header-value
      - name: x-my-header
        type: RegularExpression
        value: foos?bar$
      method: POST
      path:
        type: RegularExpression
        value: /v1/example/?$
  - backendRefs:
    - name: example-service
      port: 80
    filters:
    - extensionRef:
        group: configuration.konghq.com
        kind: KongPlugin
        name: example-service-example-route-cors
      type: ExtensionRef
    - extensionRef:
        group: configuration.konghq.com
        kind: KongPlugin
        name: example-service-example-route-basic-auth
      type: ExtensionRef
    matches:
    - headers:
      - name: x-another-header
        type: Exact
        value: first-header-value,second-header-value
      - name: x-my-header
        type: RegularExpression
        value: foos?bar$
      method: GET
      path:
        type: PathPrefix
        value: /v1/another-example
  - backendRefs:
    - name: example-service
      port: 80
    filters:
    - extensionRef:
        group: configuration.konghq.com
        kind: KongPlugin
        name: example-service-example-route-cors
      type: ExtensionRef
    - extensionRef:
        group: configuration.konghq.com
        kind: KongPlugin
        name: example-service-example-route-basic-auth
      type: ExtensionRef
    matches:
    - headers:
      - name: x-another-header
        type: Exact
        value: first-header-value,second-header-value
      - name: x-my-header
        type: RegularExpression
        value: foos?bar$
      method: POST
      path:
        type: PathPrefix
        value: /v1/another-example
  - backendRefs:
    - name: example-service
      port: 80
    filters:
    - extensionRef:
        group: configuration.konghq.com
        kind: KongPlugin
        name: example-service-example-route-cors
      type: ExtensionRef
    - extensionRef:
        group: configuration.konghq.com
        kind: KongPlugin
        name: example-service-example-route-basic-auth
      type: ExtensionRef
    matches:
    - headers:
      - name: x-another-header
        type: Exact
        value: first-header-value,second-header-value
      - name: x-my-header
        type: RegularExpression
        value: foos?bar$
      method: GET
      path:
        type: PathPrefix
        value: /v1/yet-another-example
  - backendRefs:
    - name: example-service
      port: 80
    filters:
    - extensionRef:
        group: configuration.konghq.com
        kind: KongPlugin
        name: example-service-example-route-cors
      type: ExtensionRef
    - extensionRef:
        group: configuration.konghq.com
        kind: KongPlugin
        name: example-service-example-route-basic-auth
      type: ExtensionRef
    matches:
    - headers:
      - name: x-another-header
        type: Exact
        value: first-header-value,second-header-value
      - name: x-my-header
        type: RegularExpression
        value: foos?bar$
      method: POST
      path:
        type: PathPrefix
        value: /v1/yet-another-example
---
apiVersion: v1
kind: Service
metadata:
  annotations:
    konghq.com/connect-timeout: "5000"
    konghq.com/path: /v1
    konghq.com/plugins: example-service-rate-limiting-advanced
    konghq.com/protocol: http
    konghq.com/read-timeout: "60000"
    konghq.com/retries: "5"
    konghq.com/write-timeout: "60000"
  name: example-service
spec:
  ports:
  - port: 80
    protocol: TCP
    targetPort: 80
  selector:
    app: example-service
---
apiVersion: v1
kind: Secret
metadata:
  annotations:
    kubernetes.io/ingress.class: kong
  labels:
    konghq.com/credential: basic-auth
  name: basic-auth-example-user
stringData:
  password: my_basic_password
  username: my_basic_user
---
apiVersion: configuration.konghq.com/v1
consumerGroups:
- example-consumer-group
credentials:
- basic-auth-example-user
custom_id: "1234567890"
kind: KongConsumer
metadata:
  annotations:
    konghq.com/plugins: example-user-rate-limiting-advanced
    kubernetes.io/ingress.class: kong
  name: example-user
username: example-user
---
apiVersion: configuration.konghq.com/v1beta1
kind: KongConsumerGroup
metadata:
  annotations:
    kubernetes.io/ingress.class: kong
  name: example-consumer-group
---

apiVersion: configuration.konghq.com/v1
config:
  hide_client_headers: false
  identifier: consumer
  limit:
  - 5
  namespace: example_namespace
  strategy: local
  sync_rate: -1
  window_size:
  - 30
kind: KongPlugin
metadata:
  annotations:
    kubernetes.io/ingress.class: kong
  name: example-service-rate-limiting-advanced
plugin: rate-limiting-advanced
---
apiVersion: configuration.konghq.com/v1
config:
  credentials: true
  exposed_headers:
  - X-My-Header
  headers:
  - Authorization
  max_age: 3600
  methods:
  - GET
  - POST
  origins:
  - example.com
kind: KongPlugin
metadata:
  annotations:
    kubernetes.io/ingress.class: kong
  name: example-service-example-route-cors
plugin: cors
---
apiVersion: configuration.konghq.com/v1
config:
  hide_credentials: false
kind: KongPlugin
metadata:
  annotations:
    kubernetes.io/ingress.class: kong
  name: example-service-example-route-basic-auth
plugin: basic-auth
---
apiVersion: configuration.konghq.com/v1
config:
  hide_client_headers: false
  identifier: consumer
  limit:
  - 5
  namespace: example_namespace
  strategy: local
  sync_rate: -1
  window_size:
  - 30
kind: KongPlugin
metadata:
  annotations:
    kubernetes.io/ingress.class: kong
  name: example-user-rate-limiting-advanced
plugin: rate-limiting-advanced
---
apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  annotations:
    konghq.com/headers.x-another-header: first-header-value,second-header-value
    konghq.com/headers.x-my-header: ~*foos?bar$
    konghq.com/https-redirect-status-code: "302"
    konghq.com/methods: GET,POST
    konghq.com/plugins: example-service-example-route-cors,example-service-example-route-basic-auth
    konghq.com/preserve-host: "true"
    konghq.com/protocols: http,https
    konghq.com/regex-priority: "1"
    konghq.com/snis: example.com
    konghq.com/strip-path: "false"
  name: example-service-example-route
spec:
  ingressClassName: kong
  rules:
  - host: example.com
    http:
      paths:
      - backend:
          service:
            name: example-service
            port:
              number: 80
        path: /~/v1/example/?$
        pathType: ImplementationSpecific
      - backend:
          service:
            name: example-service
            port:
              number: 80
        path: /v1/another-example
        pathType: ImplementationSpecific
      - backend:
          service:
            name: example-service
            port:
              number: 80
        path: /v1/yet-another-example
        pathType: ImplementationSpecific
  - host: another-example.com
    http:
      paths:
      - backend:
          service:
            name: example-service
            port:
              number: 80
        path: /~/v1/example/?$
        pathType: ImplementationSpecific
      - backend:
          service:
            name: example-service
            port:
              number: 80
        path: /v1/another-example
        pathType: ImplementationSpecific
      - backend:
          service:
            name: example-service
            port:
              number: 80
        path: /v1/yet-another-example
        pathType: ImplementationSpecific
  - host: yet-another-example.com
    http:
      paths:
      - backend:
          service:
            name: example-service
            port:
              number: 80
        path: /~/v1/example/?$
        pathType: ImplementationSpecific
      - backend:
          service:
            name: example-service
            port:
              number: 80
        path: /v1/another-example
        pathType: ImplementationSpecific
      - backend:
          service:
            name: example-service
            port:
              number: 80
        path: /v1/yet-another-example
        pathType: ImplementationSpecific
---
apiVersion: v1
kind: Service
metadata:
  annotations:
    konghq.com/connect-timeout: "5000"
    konghq.com/path: /v1
    konghq.com/plugins: example-service-rate-limiting-advanced
    konghq.com/protocol: http
    konghq.com/read-timeout: "60000"
    konghq.com/retries: "5"
    konghq.com/write-timeout: "60000"
  name: example-service
spec:
  ports:
  - port: 80
    protocol: TCP
    targetPort: 80
  selector:
    app: example-service
---
apiVersion: v1
kind: Secret
metadata:
  annotations:
    kubernetes.io/ingress.class: kong
  labels:
    konghq.com/credential: basic-auth
  name: basic-auth-example-user
stringData:
  password: my_basic_password
  username: my_basic_user
---
apiVersion: configuration.konghq.com/v1
consumerGroups:
- example-consumer-group
credentials:
- basic-auth-example-user
custom_id: "1234567890"
kind: KongConsumer
metadata:
  annotations:
    konghq.com/plugins: example-user-rate-limiting-advanced
    kubernetes.io/ingress.class: kong
  name: example-user
username: example-user
---
apiVersion: configuration.konghq.com/v1beta1
kind: KongConsumerGroup
metadata:
  annotations:
    kubernetes.io/ingress.class: kong
  name: example-consumer-group
---

Syntax

deck file kong2kic [command-specific flags] [global flags]

Examples

# Transform kong configuration file into KIC v3.x
# manifests using the Gateway API (default) and output
# in yaml format (default)
deck file kong2kic -s kong-config.yaml -o gateway.yaml

# Transform kong configuration file into KIC v2.x
# manifests using the Ingress API and output
# in yaml format (default)
deck file kong2kic -s kong-config.yaml -o ingress.yaml --kic-version 2 --ingress

# transform openapi configuration into kong configuration file
# and then into KIC v3.x manifests using Gateway API and  
# finally apply them via kubectl in the kong namespace
deck file openapi2kong -s petstore-openapi.json | deck file kong2kic -s - | kubectl apply -f - -n kong

# transform openapi configuration into kong configuration file
# and then into KIC v3.x manifests with an
# ingressClassName: kong-private.
# Finally apply them via kubectl in the kong namespace
deck file openapi2kong -s petstore-openapi.json | deck file kong2kic -s - --class-name kong-private | kubectl apply -f - -n kong

Flags

-o, --output-file
Output file to write to. Use - to write to stdout. (Default: "-")
-s, --state
decK state file to process. Use - to read from stdin. (Default: "-")
--ingress
Use Kubernetes Ingress API manifests instead of Gateway API manifests.
--kic-version
Generate manifests for KIC v3 or v2. Possible values are 2 or 3. (default “3”).
--class-name
String to use for “kubernetes.io/ingress.class” ObjectMeta.Annotations and for “parentRefs.name” in the case of HTTPRoute. Useful when using multiple instances of Kong Ingress Controller in the same cluster, for example one to process Internet traffic and the other to process intranet traffic. (default "kong")
-f, --format
Output format: yaml or json. (Default: "yaml")
-h, --help
Help for kong2kic.

Global flags

--analytics
Share anonymized data to help improve decK. Use --analytics=false to disable this. (Default: true)
--ca-cert
Custom CA certificate (raw contents) to use to verify Kong’s Admin TLS certificate. This value can also be set using DECK_CA_CERT environment variable. This takes precedence over --ca-cert-file flag.
--ca-cert-file
Path to a custom CA certificate to use to verify Kong’s Admin TLS certificate. This value can also be set using DECK_CA_CERT_FILE environment variable.
--config
Config file (default is $HOME/.deck.yaml).
--headers
HTTP headers (key:value) to inject in all requests to Kong’s Admin API. This flag can be specified multiple times to inject multiple headers.
--kong-addr
HTTP address of Kong’s Admin API. This value can also be set using the environment variable DECK_KONG_ADDR environment variable. (Default: "http://localhost:8001")
--kong-cookie-jar-path
Absolute path to a cookie-jar file in the Netscape cookie format for auth with Admin Server. You may also need to pass in as header the User-Agent that was used to create the cookie-jar.
--konnect-addr
Address of the Konnect endpoint. (Default: "https://us.api.konghq.com")
--konnect-token
Token associated with your Konnect account. This takes precedence over the --konnect-token-file flag.
--konnect-token-file
File containing the token associated with your Konnect account.
--konnect-control-plane-name
Konnect control plane name.
--no-color
Disable colorized output (Default: false)
--skip-workspace-crud
Skip API calls related to Workspaces (Kong Gateway Enterprise only). (Default: false)
--timeout
Set a request timeout for the client to connect with Kong (in seconds). (Default: 10)
--tls-client-cert
PEM-encoded TLS client certificate to use for authentication with Kong’s Admin API. This value can also be set using DECK_TLS_CLIENT_CERT environment variable. Must be used in conjunction with tls-client-key
--tls-client-cert-file
Path to the file containing TLS client certificate to use for authentication with Kong’s Admin API. This value can also be set using DECK_TLS_CLIENT_CERT_FILE environment variable. Must be used in conjunction with tls-client-key-file
--tls-client-key
PEM-encoded private key for the corresponding client certificate . This value can also be set using DECK_TLS_CLIENT_KEY environment variable. Must be used in conjunction with tls-client-cert
--tls-client-key-file
Path to file containing the private key for the corresponding client certificate. This value can also be set using DECK_TLS_CLIENT_KEY_FILE environment variable. Must be used in conjunction with tls-client-cert-file
--tls-server-name
Name to use to verify the hostname in Kong’s Admin TLS certificate. This value can also be set using DECK_TLS_SERVER_NAME environment variable.
--tls-skip-verify
Disable verification of Kong’s Admin TLS certificate. This value can also be set using DECK_TLS_SKIP_VERIFY environment variable. (Default: false)
--verbose
Enable verbose logging levels Setting this value to 2 outputs all HTTP requests/responses between decK and Kong. (Default: 0)

See also

File subcommands: