add network policy

Makefile

@@ -266,6 +266,9 @@ K8S_SLEEP_DURATION_FOR_WAIT_COMMAND ?= 5
 K8S_KUBECTL_VERSION ?= $(eval K8S_KUBECTL_VERSION := $(shell kubectl version --short))$(K8S_KUBECTL_VERSION)
 K8S_SERVER_VERSION ?= $(eval K8S_SERVER_VERSION := $(shell echo "$(K8S_KUBECTL_VERSION)" | sed -e "s/.*Server.*\(v[0-9]\.[0-9]*\)\..*/\1/g"))$(K8S_SERVER_VERSION)
 
+# values file to use when deploying sample vald cluster with make k8s/vald/deploy
+HELM_VALUES ?= charts/vald/values/dev.yaml
+
 COMMA := ,
 SHELL = bash
 

Makefile.d/k8s.mk

@@ -17,17 +17,17 @@
 ## clean k8s manifests
 k8s/manifest/clean:
 	rm -rf \
-	    k8s/agent \
-	    k8s/discoverer \
-	    k8s/gateway \
-	    k8s/manager
+		k8s/agent \
+		k8s/discoverer \
+		k8s/gateway \
+		k8s/manager
 
 .PHONY: k8s/manifest/update
 ## update k8s manifests using helm templates
 k8s/manifest/update: \
 	k8s/manifest/clean
 	helm template \
-	    --values charts/vald/values/dev.yaml \
+	    --values $(HELM_VALUES) \
 	    --output-dir $(TEMP_DIR) \
 	    charts/vald
 	mkdir -p k8s/gateway
@@ -61,7 +61,7 @@ k8s/manifest/helm-operator/update: \
 ## deploy vald sample cluster to k8s
 k8s/vald/deploy:
 	helm template \
-	    --values charts/vald/values/dev.yaml \
+	    --values $(HELM_VALUES) \
 	    --set defaults.image.tag=$(VERSION) \
 	    --set agent.image.repository=$(CRORG)/$(AGENT_IMAGE) \
 	    --set agent.sidecar.image.repository=$(CRORG)/$(AGENT_SIDECAR_IMAGE) \
@@ -71,6 +71,7 @@ k8s/vald/deploy:
 	    --set manager.index.image.repository=$(CRORG)/$(MANAGER_INDEX_IMAGE) \
 	    --output-dir $(TEMP_DIR) \
 	    charts/vald
+	@echo "Permitting error because there's nothing to apply when network policy is disabled"
 	kubectl apply -f $(TEMP_DIR)/vald/templates/manager/index
 	kubectl apply -f $(TEMP_DIR)/vald/templates/agent
 	kubectl apply -f $(TEMP_DIR)/vald/templates/discoverer
@@ -82,7 +83,7 @@ k8s/vald/deploy:
 ## delete vald sample cluster from k8s
 k8s/vald/delete:
 	helm template \
-	    --values charts/vald/values/dev.yaml \
+	    --values $(HELM_VALUES) \
 	    --set defaults.image.tag=$(VERSION) \
 	    --set agent.image.repository=$(CRORG)/$(AGENT_IMAGE) \
 	    --set agent.sidecar.image.repository=$(CRORG)/$(AGENT_SIDECAR_IMAGE) \
@@ -132,7 +133,7 @@ k8s/vr/deploy: \
 	k8s/metrics/metrics-server/deploy
 	yq eval \
 	    '{"apiVersion": "vald.vdaas.org/v1", "kind": "ValdRelease", "metadata":{"name":"vald-cluster"}, "spec": .}' \
-	    charts/vald/values/dev.yaml \
+	    $(HELM_VALUES) \
 	    | kubectl apply -f -
 
 .PHONY: k8s/vr/delete

charts/vald/templates/agent/networkpolicy.yaml

@@ -0,0 +1,47 @@
+#
+# Copyright (C) 2019-2023 vdaas.org vald team <vald@vdaas.org>
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#    https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+{{- $agent := .Values.agent -}}
+{{- $lb := .Values.gateway.lb -}}
+{{- $index := .Values.manager.index -}}
+{{- if .Values.defaults.networkPolicy.enabled }}
+kind: NetworkPolicy
+apiVersion: networking.k8s.io/v1
+metadata:
+  name: agent-allow
+spec:
+  podSelector:
+    matchLabels:
+      app: {{ $agent.name }}
+  policyTypes:
+    - Ingress
+    # Deny all egress traffic by default
+    - Egress
+  ingress:
+    - from:
+        - namespaceSelector:
+            matchLabels:
+              kubernetes.io/metadata.name: {{ .Release.Namespace }}
+          podSelector:
+            matchLabels:
+              app: {{ $lb.name }}
+        - namespaceSelector:
+            matchLabels:
+              kubernetes.io/metadata.name: {{ .Release.Namespace }}
+          podSelector:
+            matchLabels:
+              app: {{ $index.name }}
+{{- end }}

charts/vald/templates/discoverer/networkpolicy.yaml

@@ -0,0 +1,54 @@
+#
+# Copyright (C) 2019-2023 vdaas.org vald team <vald@vdaas.org>
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#    https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+{{- $discoverer := .Values.discoverer -}}
+{{- $lb := .Values.gateway.lb -}}
+{{- $index := .Values.manager.index -}}
+{{- if .Values.defaults.networkPolicy.enabled }}
+kind: NetworkPolicy
+apiVersion: networking.k8s.io/v1
+metadata:
+  name: discoverer-allow
+spec:
+  podSelector:
+    matchLabels:
+      app: {{ $discoverer.name }}
+  policyTypes:
+    - Ingress
+    - Egress
+  ingress:
+    - from:
+      - namespaceSelector:
+          matchLabels:
+            kubernetes.io/metadata.name: kube-system
+      - namespaceSelector:
+          matchLabels:
+            kubernetes.io/metadata.name: {{ .Release.Namespace }}
+        podSelector:
+          matchLabels:
+            app: {{ $lb.name }}
+      - namespaceSelector:
+          matchLabels:
+            kubernetes.io/metadata.name: {{ .Release.Namespace }}
+        podSelector:
+          matchLabels:
+            app: {{ $index.name }}
+  egress:
+    - to:
+      - namespaceSelector:
+          matchLabels:
+            kubernetes.io/metadata.name: kube-system
+{{- end }}

charts/vald/templates/gateway/filter/networkpolicy.yaml

@@ -0,0 +1,33 @@
+#
+# Copyright (C) 2019-2023 vdaas.org vald team <vald@vdaas.org>
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#    https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+{{- $lb := .Values.gateway.lb -}}
+{{- $filter := .Values.gateway.filter -}}
+{{- if .Values.defaults.networkPolicy.enabled }}
+kind: NetworkPolicy
+apiVersion: networking.k8s.io/v1
+metadata:
+  name: filter-allow
+spec:
+  podSelector:
+    matchLabels:
+      app: {{ $filter.name }}
+  policyTypes:
+    - Egress
+  egress:
+    # allow all the egress to communicate with user-defined filters
+    - {}
+{{- end }}

charts/vald/templates/gateway/lb/networkpolicy.yaml

@@ -0,0 +1,61 @@
+#
+# Copyright (C) 2019-2023 vdaas.org vald team <vald@vdaas.org>
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#    https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+{{- $agent := .Values.agent -}}
+{{- $lb := .Values.gateway.lb -}}
+{{- $filter := .Values.gateway.filter -}}
+{{- $discoverer := .Values.discoverer -}}
+{{- if .Values.defaults.networkPolicy.enabled }}
+kind: NetworkPolicy
+apiVersion: networking.k8s.io/v1
+metadata:
+  name: lb-allow
+spec:
+  podSelector:
+    matchLabels:
+      app: {{ $lb.name }}
+  policyTypes:
+    - Ingress
+    - Egress
+  ingress:
+    - from:
+      - namespaceSelector:
+          matchLabels:
+            kubernetes.io/metadata.name: kube-system
+      - namespaceSelector:
+          matchLabels:
+            kubernetes.io/metadata.name: {{ .Release.Namespace }}
+        podSelector:
+          matchLabels:
+            app: {{ $filter.name }}
+  egress:
+    - to:
+      - namespaceSelector:
+          matchLabels:
+            kubernetes.io/metadata.name: {{ .Release.Namespace }}
+        podSelector:
+          matchLabels:
+            app: {{ $agent.name }}
+      - namespaceSelector:
+          matchLabels:
+            kubernetes.io/metadata.name: {{ .Release.Namespace }}
+        podSelector:
+          matchLabels:
+            app: {{ $discoverer.name }}
+      - namespaceSelector:
+          matchLabels:
+            kubernetes.io/metadata.name: kube-system
+{{- end }}

charts/vald/templates/manager/index/networkpolicy.yaml

@@ -0,0 +1,54 @@
+#
+# Copyright (C) 2019-2023 vdaas.org vald team <vald@vdaas.org>
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#    https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+{{- $agent := .Values.agent -}}
+{{- $discoverer := .Values.discoverer -}}
+{{- $index := .Values.manager.index -}}
+{{- if .Values.defaults.networkPolicy.enabled }}
+kind: NetworkPolicy
+apiVersion: networking.k8s.io/v1
+metadata:
+  name: index-allow
+spec:
+  podSelector:
+    matchLabels:
+      app: {{ $index.name }}
+  policyTypes:
+    - Ingress
+    - Egress
+  ingress:
+    - from:
+      - namespaceSelector:
+          matchLabels:
+            kubernetes.io/metadata.name: kube-system
+  egress:
+    - to:
+      - namespaceSelector:
+          matchLabels:
+            kubernetes.io/metadata.name: {{ .Release.Namespace }}
+        podSelector:
+          matchLabels:
+            app: {{ $agent.name }}
+      - namespaceSelector:
+          matchLabels:
+            kubernetes.io/metadata.name: {{ .Release.Namespace }}
+        podSelector:
+          matchLabels:
+            app: {{ $discoverer.name }}
+      - namespaceSelector:
+          matchLabels:
+            kubernetes.io/metadata.name: kube-system
+{{- end }}

charts/vald/values.yaml

@@ -830,6 +830,13 @@ defaults:
       # @schema {"name": "defaults.observability.trace.enabled", "type": "boolean"}
       # defaults.observability.trace.enabled -- trace enabled
       enabled: false
+  # @schema {"name": "defaults.networkPolicy", "type": "object", "anchor": "networkPolicy"}
+  networkPolicy:
+    # @schema {"name": "defaults.networkPolicy.enabled", "type": "boolean"}
+    # defaults.networkPolicy.enabled -- if network policy enabled
+    # TODO: Change this to true after implementing user custom network policy parser
+    enabled: false
+
 # @schema {"name": "gateway", "type": "object"}
 gateway:
   # @schema {"name": "gateway.lb", "type": "object"}