diff --git a/charts/chainlink-cluster/devspace.yaml b/charts/chainlink-cluster/devspace.yaml
index 902925b278e..0157ce7451c 100644
--- a/charts/chainlink-cluster/devspace.yaml
+++ b/charts/chainlink-cluster/devspace.yaml
@@ -21,8 +21,8 @@ pipelines:
       run_dependencies --all                           
       ensure_pull_secrets --all                         
       build_images ---var DOCKER_DEFAULT_PLATFORM=linux/amd64  --all -t $(git rev-parse --short HEAD)
-      kubectl annotate namespace ${DEVSPACE_NAMESPACE} janitor/ttl=${NS_TTL}
-      kubectl label namespace/${DEVSPACE_NAMESPACE} network=crib
+      kubectl annotate namespace ${DEVSPACE_NAMESPACE} janitor/ttl=${NS_TTL} || true
+      kubectl label namespace/${DEVSPACE_NAMESPACE} network=crib || true
       create_deployments --all                          
       echo "Namespace ${DEVSPACE_NAMESPACE} will be deleted in ${NS_TTL}"
   purge:
diff --git a/charts/chainlink-cluster/templates/chainlink-db-networkpolicy.yaml b/charts/chainlink-cluster/templates/chainlink-db-networkpolicy.yaml
new file mode 100644
index 00000000000..e5d029b7865
--- /dev/null
+++ b/charts/chainlink-cluster/templates/chainlink-db-networkpolicy.yaml
@@ -0,0 +1,23 @@
+apiVersion: networking.k8s.io/v1
+kind: NetworkPolicy
+metadata:
+  name: {{ $.Release.Name }}-db
+spec:
+  podSelector:
+    matchLabels:
+      app: {{ $.Release.Name }}-db
+  policyTypes:
+    - Ingress
+  ingress:
+    - from:
+        # Allow all node pods to access the database pods.
+        - podSelector:
+            matchLabels:
+              app: {{ $.Release.Name }}
+        # Allow all runner pods to access the database pods.
+        - podSelector:
+            matchLabels:
+              app: runner
+      ports:
+        - protocol: TCP
+          port: 5432
diff --git a/charts/chainlink-cluster/templates/chainlink-node-deployment.yaml b/charts/chainlink-cluster/templates/chainlink-node-deployment.yaml
index 16156ef4ffc..884cf0e535b 100644
--- a/charts/chainlink-cluster/templates/chainlink-node-deployment.yaml
+++ b/charts/chainlink-cluster/templates/chainlink-node-deployment.yaml
@@ -1,4 +1,4 @@
-{{- range $cfg := .Values.chainlink.nodes }}
+{{- range $index, $cfg := .Values.chainlink.nodes }}
 apiVersion: apps/v1
 kind: Deployment
 metadata:
@@ -18,6 +18,10 @@ spec:
         app: {{ $.Release.Name }}
         instance: {{ $cfg.name }}
         release: {{ $.Release.Name }}
+        # Used for testing. Role value should either be: bootstrap or node.
+        # There should only be one "bootstrap" node, the rest should be "node".
+        # Here we set the first node to be bootstrap, the rest to be node.
+        role: {{ if eq $index 0 }}bootstrap{{ else }}node{{ end }}
         {{- range $key, $value := $.Values.labels }}
         {{ $key }}: {{ $value | quote }}
         {{- end }}
diff --git a/charts/chainlink-cluster/templates/chainlink-node-networkpolicy.yaml b/charts/chainlink-cluster/templates/chainlink-node-networkpolicy.yaml
new file mode 100644
index 00000000000..321bc531626
--- /dev/null
+++ b/charts/chainlink-cluster/templates/chainlink-node-networkpolicy.yaml
@@ -0,0 +1,19 @@
+apiVersion: networking.k8s.io/v1
+kind: NetworkPolicy
+metadata:
+  name: {{ $.Release.Name }}-node
+spec:
+  podSelector:
+    matchLabels:
+      app: {{ $.Release.Name }}
+  policyTypes:
+    - Ingress
+  ingress:
+    # Allow all ingress traffic between the node pods and from runner pod.
+    - from:
+      - podSelector:
+          matchLabels:
+            app: {{ $.Release.Name }}
+      - podSelector:
+          matchLabels:
+            app: runner
diff --git a/charts/chainlink-cluster/templates/geth-deployment.yaml b/charts/chainlink-cluster/templates/geth-deployment.yaml
index 6948c4df288..8d2d4d3c76c 100644
--- a/charts/chainlink-cluster/templates/geth-deployment.yaml
+++ b/charts/chainlink-cluster/templates/geth-deployment.yaml
@@ -65,6 +65,8 @@ spec:
           - '--miner.etherbase'
           - '0xf39fd6e51aad88f6f4ce6ab8827279cfffb92266'
           - '--ipcdisable'
+          - '--http.api'
+          - 'admin,debug,web3,eth,txpool,personal,miner,net'
           - '--http'
           - '--http.vhosts'
           - '*'
diff --git a/charts/chainlink-cluster/templates/geth-networkpolicy.yaml b/charts/chainlink-cluster/templates/geth-networkpolicy.yaml
new file mode 100644
index 00000000000..5be59136251
--- /dev/null
+++ b/charts/chainlink-cluster/templates/geth-networkpolicy.yaml
@@ -0,0 +1,25 @@
+apiVersion: networking.k8s.io/v1
+kind: NetworkPolicy
+metadata:
+  name: {{ $.Release.Name }}-geth
+spec:
+  podSelector:
+    matchLabels:
+      app: geth
+  policyTypes:
+    - Ingress
+  ingress:
+    - from:
+        # Allow http and websocket connections from the node pods.
+        - podSelector:
+            matchLabels:
+              app: {{ $.Release.Name }}
+        # Allow http and websocket connections from the runner pods.
+        - podSelector:
+            matchLabels:
+              app: runner
+      ports:
+        - protocol: TCP
+          port: 8544
+        - protocol: TCP
+          port: 8546
diff --git a/charts/chainlink-cluster/templates/mockserver-networkpolicy.yaml b/charts/chainlink-cluster/templates/mockserver-networkpolicy.yaml
new file mode 100644
index 00000000000..074b1ab089a
--- /dev/null
+++ b/charts/chainlink-cluster/templates/mockserver-networkpolicy.yaml
@@ -0,0 +1,23 @@
+apiVersion: networking.k8s.io/v1
+kind: NetworkPolicy
+metadata:
+  name: {{ $.Release.Name }}-mockserver
+spec:
+  podSelector:
+    matchLabels:
+      app: mockserver
+  policyTypes:
+    - Ingress
+  ingress:
+    - from:
+        # Allow http traffic from the node pods.
+        - podSelector:
+            matchLabels:
+              app: {{ $.Release.Name }}
+        # Allow http traffic from the runner pods.
+        - podSelector:
+            matchLabels:
+              app: runner
+      ports:
+        - protocol: TCP
+          port: 1080
diff --git a/charts/chainlink-cluster/templates/networkpolicy-default-deny.yaml b/charts/chainlink-cluster/templates/networkpolicy-default-deny.yaml
new file mode 100644
index 00000000000..e2a4407be6a
--- /dev/null
+++ b/charts/chainlink-cluster/templates/networkpolicy-default-deny.yaml
@@ -0,0 +1,27 @@
+apiVersion: networking.k8s.io/v1
+kind: NetworkPolicy
+metadata:
+  name: default-deny
+spec:
+  podSelector:
+    matchLabels: {}
+  policyTypes:
+    - Ingress
+    - Egress
+  egress:
+    - to:
+        - namespaceSelector:
+            matchLabels:
+              kubernetes.io/metadata.name: "{{ $.Release.Namespace }}"
+    - to:
+        - namespaceSelector:
+            matchLabels:
+              kubernetes.io/metadata.name: kube-system
+          podSelector:
+            matchLabels:
+              k8s-app: kube-dns
+      ports:
+        - protocol: TCP
+          port: 53
+        - protocol: UDP
+          port: 53
diff --git a/charts/chainlink-cluster/templates/runner-networkpolicy.yaml b/charts/chainlink-cluster/templates/runner-networkpolicy.yaml
new file mode 100644
index 00000000000..2bb6ac98625
--- /dev/null
+++ b/charts/chainlink-cluster/templates/runner-networkpolicy.yaml
@@ -0,0 +1,19 @@
+apiVersion: networking.k8s.io/v1
+kind: NetworkPolicy
+metadata:
+  name: {{ $.Release.Name }}-runner
+spec:
+  podSelector:
+    matchLabels:
+      app: runner
+  policyTypes:
+    - Ingress
+  ingress:
+    # Allow all ingress traffic between the node pods and from runner pod.
+    - from:
+      - podSelector:
+          matchLabels:
+            app: {{ $.Release.Name }}
+      - podSelector:
+          matchLabels:
+            app: runner