Add bootstrapping scripts and nix expressions

bootstrap/charts/nginx-ingress.yaml

@@ -0,0 +1,69 @@
+## nginx configuration
+## Ref: https://github.com/kubernetes/ingress/blob/master/controllers/nginx/configuration.md
+##
+controller:
+  kind: Deployment
+  hostNetwork: true
+  service:
+    type: NodePort
+    nodePorts:
+      http: 30080
+      https: 30443
+    targetPorts:
+      http: http
+      https: https
+
+  tolerations:
+  - key: node-role.kubernetes.io/master
+    operator: Equal
+    value: "true"
+    effect: NoSchedule
+  - key: unschedulable
+    operator: Equal
+    value: "true"
+    effect: NoSchedule
+
+  affinity:
+    nodeAffinity:
+      requiredDuringSchedulingIgnoredDuringExecution:
+        nodeSelectorTerms:
+        - matchExpressions:
+          - key: kubernetes.io/hostname
+            operator: In
+            values: [ @apiserver@ ]
+
+    podAntiAffinity:
+      requiredDuringSchedulingIgnoredDuringExecution:
+      - labelSelector:
+          matchExpressions:
+          - key: app
+            operator: In
+            values:
+            - nginx-ingress
+          - key: component
+            operator: In
+            values:
+            - controller
+        topologyKey: kubernetes.io/hostname
+        namespaces: []
+
+  replicaCount: 1
+
+  minAvailable: 1
+
+  metrics:
+    enabled: true
+    serviceMonitor.enabled: true
+
+# TCP service key:value pairs
+# Ref: https://github.com/kubernetes/contrib/tree/master/ingress/controllers/nginx/examples/tcp
+##
+tcp: {}
+#  8080: "default/example-tcp-svc:9000"
+
+# UDP service key:value pairs
+# Ref: https://github.com/kubernetes/contrib/tree/master/ingress/controllers/nginx/examples/udp
+##
+udp: {}
+#  53: "kube-system/kube-dns:53"
+