feat: Disable Service Links by default

README.md

@@ -110,6 +110,7 @@ Service Labels
 | `k8ify.exposePlain.$port.type: ClusterIP\|LoadBalancer\|ExternalName\|NodePort`  | Set the k8s Service type (default `LoadBalancer`) |
 | `k8ify.exposePlain.$port.externalTrafficPolicy: Cluster\|Local`  | Set the k8s Service traffic policy (default `Local`). `Local` makes the client IP visible to the application but may provide worse load balancing than `Cluster`. |
 | `k8ify.exposePlain.$port.healthCheckNodePort: $port`  | Set the k8s Service health check port number. |
+| `k8ify.enableServiceLinks: $value` | Inject ENV variables for each K8s service in the namespace. |
 
 Volume Labels
 

docs/conversion.md

@@ -116,6 +116,8 @@ spec:
         # `services.$name.labels["k8ify.annotations"]` merged with `services.$name.labels["k8ify.Pod.annotations"]` (latter take priority)
         foo: bar
     spec:
+      # `services.$name.labels."k8ify.enableServiceLinks`, defaults to `false`
+      enableServiceLinks: false
       # Anti-affinity is always configured to avoid running multiple replicas (instances) of the same deployment on the same node
       affinity:
         podAntiAffinity:
@@ -237,6 +239,8 @@ spec:
         # timestamp to ensure restarts of all pods
         k8ify.restart-trigger: "1675680748"
     spec:
+      # `services.$name.labels."k8ify.enableServiceLinks`, defaults to `false`
+      enableServiceLinks: false
       # Anti-affinity is always configured to avoid running multiple replicas (instances) of the same deployment on the same node
       affinity:
         podAntiAffinity:

pkg/converter/converter.go

@@ -255,7 +255,10 @@ func composeServiceToPodTemplate(
 		volumesArray = append(volumesArray, volumes[key])
 	}
 
+	enableServiceLinks := util.GetBoolean(workload.Labels(), "k8ify.enableServiceLinks")
+
 	podSpec := core.PodSpec{
+		EnableServiceLinks: &enableServiceLinks,
 		Containers:         containers,
 		RestartPolicy:      core.RestartPolicyAlways,
 		Volumes:            volumesArray,

tests/golden/101/manifests/nginx-oasp-deployment.yaml

@@ -52,5 +52,6 @@ spec:
           tcpSocket:
             port: 80
           timeoutSeconds: 60
+      enableServiceLinks: false
       restartPolicy: Always
 status: {}

tests/golden/cluster-apps-domain/manifests/nginx-oasp-deployment.yaml

@@ -51,5 +51,6 @@ spec:
           tcpSocket:
             port: 80
           timeoutSeconds: 60
+      enableServiceLinks: false
       restartPolicy: Always
 status: {}

tests/golden/defaults/manifests/nginx-oasp-deployment.yaml

@@ -51,5 +51,6 @@ spec:
           tcpSocket:
             port: 80
           timeoutSeconds: 60
+      enableServiceLinks: false
       restartPolicy: Always
 status: {}

tests/golden/demo/docker-compose.yml

@@ -1,13 +1,15 @@
-version: '3.4'
+version: "3.4"
 services:
   mongo:
     image: mongo:4.0
     restart: always
     ports:
-      - '127.0.0.1:27017:27017'
+      - "127.0.0.1:27017:27017"
     volumes:
       - mongodb_data:/data/db
   portal:
+    labels:
+      k8ify.enableServiceLinks: "true"
     image: vshn/portal:dev
     build:
       target: base
@@ -20,7 +22,7 @@ services:
       - "8001:8000"
     volumes:
       - ./:/src
-    entrypoint: 
+    entrypoint:
       - echo
     command:
       - "Hello World"

tests/golden/demo/manifests/mongo-statefulset.yaml

@@ -63,6 +63,7 @@ spec:
         volumeMounts:
         - mountPath: /data/db
           name: mongodb-data
+      enableServiceLinks: false
       restartPolicy: Always
   updateStrategy: {}
   volumeClaimTemplates:

tests/golden/demo/manifests/portal-oasp-deployment.yaml

@@ -81,6 +81,7 @@ spec:
           periodSeconds: 10
           successThreshold: 1
           timeoutSeconds: 60
+      enableServiceLinks: true
       restartPolicy: Always
       serviceAccountName: portalk8saccess
 status: {}

tests/golden/empty-env-vars-list/manifests/pinger-oasp-deployment.yaml

@@ -38,5 +38,6 @@ spec:
         imagePullPolicy: Always
         name: pinger-oasp
         resources: {}
+      enableServiceLinks: false
       restartPolicy: Always
 status: {}

tests/golden/empty-env-vars-map/manifests/pinger-oasp-deployment.yaml

@@ -38,5 +38,6 @@ spec:
         imagePullPolicy: Always
         name: pinger-oasp
         resources: {}
+      enableServiceLinks: false
       restartPolicy: Always
 status: {}

tests/golden/env-vars/manifests/fooBar-oasp-deployment.yaml

@@ -54,5 +54,6 @@ spec:
         imagePullPolicy: Always
         name: fooBar-oasp
         resources: {}
+      enableServiceLinks: false
       restartPolicy: Always
 status: {}

tests/golden/expose-http-and-plain/manifests/nginx-oasp-deployment.yaml

@@ -55,5 +55,6 @@ spec:
           tcpSocket:
             port: 8888
           timeoutSeconds: 60
+      enableServiceLinks: false
       restartPolicy: Always
 status: {}

tests/golden/expose-plain/manifests/nginx-oasp-deployment.yaml

@@ -55,5 +55,6 @@ spec:
           tcpSocket:
             port: 8888
           timeoutSeconds: 60
+      enableServiceLinks: false
       restartPolicy: Always
 status: {}

tests/golden/noports/manifests/pinger-oasp-deployment.yaml

@@ -35,5 +35,6 @@ spec:
         imagePullPolicy: Always
         name: pinger-oasp
         resources: {}
+      enableServiceLinks: false
       restartPolicy: Always
 status: {}

tests/golden/parts-ingress/manifests/nginx-frontend-oasp-deployment.yaml

@@ -71,5 +71,6 @@ spec:
           tcpSocket:
             port: 4480
           timeoutSeconds: 60
+      enableServiceLinks: false
       restartPolicy: Always
 status: {}

tests/golden/parts/manifests/mongo-statefulset.yaml

@@ -84,6 +84,7 @@ spec:
         volumeMounts:
         - mountPath: /data/db
           name: mongodb-data
+      enableServiceLinks: false
       restartPolicy: Always
   updateStrategy: {}
   volumeClaimTemplates:

tests/golden/parts/manifests/nginx-frontend-oasp-deployment.yaml

@@ -98,6 +98,7 @@ spec:
           name: sessions
         - mountPath: /data/web
           name: webdata
+      enableServiceLinks: false
       restartPolicy: Always
       volumes:
       - name: sessions

tests/golden/poddisruptionbudget/manifests/nginx-oasp-deployment.yaml

@@ -52,5 +52,6 @@ spec:
           tcpSocket:
             port: 80
           timeoutSeconds: 60
+      enableServiceLinks: false
       restartPolicy: Always
 status: {}

tests/golden/storage-encrypted/manifests/default-oasp-statefulset.yaml

@@ -37,6 +37,7 @@ spec:
         volumeMounts:
         - mountPath: /data
           name: default-data
+      enableServiceLinks: false
       restartPolicy: Always
   updateStrategy: {}
   volumeClaimTemplates:

tests/golden/storage-encrypted/manifests/default-shared-oasp-deployment.yaml

@@ -38,6 +38,7 @@ spec:
         volumeMounts:
         - mountPath: /data
           name: default-shared-data
+      enableServiceLinks: false
       restartPolicy: Always
       volumes:
       - name: default-shared-data

tests/golden/storage-encrypted/manifests/share-0-oasp-deployment.yaml

@@ -38,6 +38,7 @@ spec:
         volumeMounts:
         - mountPath: /data
           name: shared-data
+      enableServiceLinks: false
       restartPolicy: Always
       volumes:
       - name: shared-data

tests/golden/storage-encrypted/manifests/share-1-oasp-deployment.yaml

@@ -38,6 +38,7 @@ spec:
         volumeMounts:
         - mountPath: /data
           name: shared-data
+      enableServiceLinks: false
       restartPolicy: Always
       volumes:
       - name: shared-data

tests/golden/storage-encrypted/manifests/singleton-db-statefulset.yaml

@@ -34,6 +34,7 @@ spec:
         volumeMounts:
         - mountPath: /data
           name: singleton-db-storage
+      enableServiceLinks: false
       restartPolicy: Always
   updateStrategy: {}
   volumeClaimTemplates:

tests/golden/storage/manifests/default-oasp-statefulset.yaml

@@ -37,6 +37,7 @@ spec:
         volumeMounts:
         - mountPath: /data
           name: default-data
+      enableServiceLinks: false
       restartPolicy: Always
   updateStrategy: {}
   volumeClaimTemplates:

tests/golden/storage/manifests/default-shared-oasp-deployment.yaml

@@ -38,6 +38,7 @@ spec:
         volumeMounts:
         - mountPath: /data
           name: default-shared-data
+      enableServiceLinks: false
       restartPolicy: Always
       volumes:
       - name: default-shared-data

tests/golden/storage/manifests/share-0-oasp-deployment.yaml

@@ -38,6 +38,7 @@ spec:
         volumeMounts:
         - mountPath: /data
           name: shared-data
+      enableServiceLinks: false
       restartPolicy: Always
       volumes:
       - name: shared-data

tests/golden/storage/manifests/share-1-oasp-deployment.yaml

@@ -38,6 +38,7 @@ spec:
         volumeMounts:
         - mountPath: /data
           name: shared-data
+      enableServiceLinks: false
       restartPolicy: Always
       volumes:
       - name: shared-data

tests/golden/storage/manifests/singleton-db-statefulset.yaml

@@ -34,6 +34,7 @@ spec:
         volumeMounts:
         - mountPath: /data
           name: singleton-db-storage
+      enableServiceLinks: false
       restartPolicy: Always
   updateStrategy: {}
   volumeClaimTemplates: