buzz/deploy/charts/buzz-push-gateway/templates/networkpolicy.yaml

{{- if .Values.networkPolicy.enabled }}
apiVersion: networking.k8s.io/v1
kind: NetworkPolicy
metadata:
  name: {{ include "push.name" . }}
spec:
  podSelector:
    matchLabels: {{- include "push.runtimeLabels" . | nindent 6 }}
  policyTypes: [Ingress, Egress]
  ingress:
    - ports: [{ port: 8080, protocol: TCP }]
    {{- if .Values.networkPolicy.monitoring.enabled }}
    {{- if or (not .Values.networkPolicy.monitoring.namespaceSelector) (not .Values.networkPolicy.monitoring.podSelector) }}
    {{- fail "networkPolicy.monitoring.enabled requires non-empty namespaceSelector and podSelector so 8081 scrape ingress is scoped, never blanket" }}
    {{- end }}
    # Scoped scrape access to the private health/metrics port. Off by default so
    # 8081 has no pod ingress; when enabled the operator names their scraper.
    - from:
        - namespaceSelector:
            matchLabels: {{- toYaml .Values.networkPolicy.monitoring.namespaceSelector | nindent 14 }}
          podSelector:
            matchLabels: {{- toYaml .Values.networkPolicy.monitoring.podSelector | nindent 14 }}
      ports: [{ port: 8081, protocol: TCP }]
    {{- end }}
  egress:
    - to:
        - namespaceSelector:
            matchLabels: {{- toYaml .Values.networkPolicy.dns.namespaceSelector | nindent 14 }}
          podSelector:
            matchLabels: {{- toYaml .Values.networkPolicy.dns.podSelector | nindent 14 }}
      ports: [{ port: 53, protocol: UDP }, { port: 53, protocol: TCP }]
    - to:
      {{- range .Values.networkPolicy.apnsEgressCidrs }}
        - ipBlock: { cidr: {{ . }} }
      {{- end }}
      ports: [{ port: 443, protocol: TCP }]
    - to:
      {{- range .Values.networkPolicy.postgresEgressCidrs }}
        - ipBlock: { cidr: {{ . }} }
      {{- end }}
      ports: [{ port: 5432, protocol: TCP }]
{{- end }}