fix: improve Geth P2P discovery with NAT settings

- Add POD_IP environment variable for NAT extip
- Add discovery.port and bootnodes configuration
- Create NodePort service for P2P traffic
- Now advertises correct pod IP for P2P connections

Author: lalalune

packages/deployment/kubernetes/helm/geth-l1/templates/statefulset.yaml

@@ -31,6 +31,11 @@ spec:
           {{- toYaml .Values.securityContext | nindent 12 }}
         image: "{{ .Values.image.repository }}:{{ .Values.image.tag | default .Chart.AppVersion }}"
         imagePullPolicy: {{ .Values.image.pullPolicy }}
+        env:
+        - name: POD_IP
+          valueFrom:
+            fieldRef:
+              fieldPath: status.podIP
         command:
         - geth
         args:
@@ -62,6 +67,11 @@ spec:
         {{- end }}
         - --port={{ .Values.config.p2p.port }}
         - --maxpeers={{ .Values.config.p2p.maxPeers }}
+        - --nat=extip:$(POD_IP)
+        - --discovery.port={{ .Values.config.p2p.port }}
+        {{- if .Values.config.bootnodes }}
+        - --bootnodes={{ .Values.config.bootnodes }}
+        {{- end }}
         {{- if .Values.config.metrics.enabled }}
         - --metrics
         - --metrics.addr={{ .Values.config.metrics.addr }}

packages/deployment/kubernetes/helm/geth-l1/values.yaml

@@ -106,6 +106,9 @@ config:
     port: 30303
     maxPeers: 50
 
+  # Sepolia bootnodes (optional but helps with peer discovery)
+  bootnodes: "enode://9246d00bc8fd1742e5ad2428b80fc4dc45d786283e05ef6edbd9002cbc335d40998444732fbe921cb88e1d2c73d1b1de53bae6a2237996e9bfe14f871baf7066@18.168.182.86:30303,enode://ec66ddcf1a974950bd4c782789a7e04f8aa7c2fbf0d879bfc2df64c7bc90eb0f0f03a5b35c6fa6cbcf7befd1c8419e3f0e5ff0df6a96d57d3e2d1fa36d9c66e4@52.14.151.177:30303"
+  
   # Metrics
   metrics:
     enabled: true