Adds MetalLB addon

deploy/addons/metallb/metallb-config.yaml.tmpl

@@ -0,0 +1,12 @@
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  namespace: metallb-system
+  name: config
+data:
+  config: |
+    address-pools:
+    - name: default
+      protocol: layer2
+      addresses:
+      - {{ .LoadBalancerStartIP }}-{{ .LoadBalancerEndIP }}

deploy/addons/metallb/metallb.yaml

@@ -0,0 +1,293 @@
+apiVersion: v1
+kind: Namespace
+metadata:
+  labels:
+    app: metallb
+  name: metallb-system
+---
+apiVersion: policy/v1beta1
+kind: PodSecurityPolicy
+metadata:
+  labels:
+    app: metallb
+  name: speaker
+  namespace: metallb-system
+spec:
+  allowPrivilegeEscalation: false
+  allowedCapabilities:
+  - NET_ADMIN
+  - NET_RAW
+  - SYS_ADMIN
+  fsGroup:
+    rule: RunAsAny
+  hostNetwork: true
+  hostPorts:
+  - max: 7472
+    min: 7472
+  privileged: true
+  runAsUser:
+    rule: RunAsAny
+  seLinux:
+    rule: RunAsAny
+  supplementalGroups:
+    rule: RunAsAny
+  volumes:
+  - '*'
+---
+apiVersion: v1
+kind: ServiceAccount
+metadata:
+  labels:
+    app: metallb
+  name: controller
+  namespace: metallb-system
+---
+apiVersion: v1
+kind: ServiceAccount
+metadata:
+  labels:
+    app: metallb
+  name: speaker
+  namespace: metallb-system
+---
+apiVersion: rbac.authorization.k8s.io/v1
+kind: ClusterRole
+metadata:
+  labels:
+    app: metallb
+  name: metallb-system:controller
+rules:
+- apiGroups:
+  - ''
+  resources:
+  - services
+  verbs:
+  - get
+  - list
+  - watch
+  - update
+- apiGroups:
+  - ''
+  resources:
+  - services/status
+  verbs:
+  - update
+- apiGroups:
+  - ''
+  resources:
+  - events
+  verbs:
+  - create
+  - patch
+---
+apiVersion: rbac.authorization.k8s.io/v1
+kind: ClusterRole
+metadata:
+  labels:
+    app: metallb
+  name: metallb-system:speaker
+rules:
+- apiGroups:
+  - ''
+  resources:
+  - services
+  - endpoints
+  - nodes
+  verbs:
+  - get
+  - list
+  - watch
+- apiGroups:
+  - ''
+  resources:
+  - events
+  verbs:
+  - create
+  - patch
+- apiGroups:
+  - extensions
+  resourceNames:
+  - speaker
+  resources:
+  - podsecuritypolicies
+  verbs:
+  - use
+---
+apiVersion: rbac.authorization.k8s.io/v1
+kind: Role
+metadata:
+  labels:
+    app: metallb
+  name: config-watcher
+  namespace: metallb-system
+rules:
+- apiGroups:
+  - ''
+  resources:
+  - configmaps
+  verbs:
+  - get
+  - list
+  - watch
+---
+apiVersion: rbac.authorization.k8s.io/v1
+kind: ClusterRoleBinding
+metadata:
+  labels:
+    app: metallb
+  name: metallb-system:controller
+roleRef:
+  apiGroup: rbac.authorization.k8s.io
+  kind: ClusterRole
+  name: metallb-system:controller
+subjects:
+- kind: ServiceAccount
+  name: controller
+  namespace: metallb-system
+---
+apiVersion: rbac.authorization.k8s.io/v1
+kind: ClusterRoleBinding
+metadata:
+  labels:
+    app: metallb
+  name: metallb-system:speaker
+roleRef:
+  apiGroup: rbac.authorization.k8s.io
+  kind: ClusterRole
+  name: metallb-system:speaker
+subjects:
+- kind: ServiceAccount
+  name: speaker
+  namespace: metallb-system
+---
+apiVersion: rbac.authorization.k8s.io/v1
+kind: RoleBinding
+metadata:
+  labels:
+    app: metallb
+  name: config-watcher
+  namespace: metallb-system
+roleRef:
+  apiGroup: rbac.authorization.k8s.io
+  kind: Role
+  name: config-watcher
+subjects:
+- kind: ServiceAccount
+  name: controller
+- kind: ServiceAccount
+  name: speaker
+---
+apiVersion: apps/v1
+kind: DaemonSet
+metadata:
+  labels:
+    app: metallb
+    component: speaker
+  name: speaker
+  namespace: metallb-system
+spec:
+  selector:
+    matchLabels:
+      app: metallb
+      component: speaker
+  template:
+    metadata:
+      annotations:
+        prometheus.io/port: '7472'
+        prometheus.io/scrape: 'true'
+      labels:
+        app: metallb
+        component: speaker
+    spec:
+      containers:
+      - args:
+        - --port=7472
+        - --config=config
+        env:
+        - name: METALLB_NODE_NAME
+          valueFrom:
+            fieldRef:
+              fieldPath: spec.nodeName
+        - name: METALLB_HOST
+          valueFrom:
+            fieldRef:
+              fieldPath: status.hostIP
+        image: metallb/speaker:v0.8.2
+        imagePullPolicy: IfNotPresent
+        name: speaker
+        ports:
+        - containerPort: 7472
+          name: monitoring
+        resources:
+          limits:
+            cpu: 100m
+            memory: 100Mi
+        securityContext:
+          allowPrivilegeEscalation: false
+          capabilities:
+            add:
+            - NET_ADMIN
+            - NET_RAW
+            - SYS_ADMIN
+            drop:
+            - ALL
+          readOnlyRootFilesystem: true
+      hostNetwork: true
+      nodeSelector:
+        beta.kubernetes.io/os: linux
+      serviceAccountName: speaker
+      terminationGracePeriodSeconds: 0
+      tolerations:
+      - effect: NoSchedule
+        key: node-role.kubernetes.io/master
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  labels:
+    app: metallb
+    component: controller
+  name: controller
+  namespace: metallb-system
+spec:
+  revisionHistoryLimit: 3
+  selector:
+    matchLabels:
+      app: metallb
+      component: controller
+  template:
+    metadata:
+      annotations:
+        prometheus.io/port: '7472'
+        prometheus.io/scrape: 'true'
+      labels:
+        app: metallb
+        component: controller
+    spec:
+      containers:
+      - args:
+        - --port=7472
+        - --config=config
+        image: metallb/controller:v0.8.2
+        imagePullPolicy: IfNotPresent
+        name: controller
+        ports:
+        - containerPort: 7472
+          name: monitoring
+        resources:
+          limits:
+            cpu: 100m
+            memory: 100Mi
+        securityContext:
+          allowPrivilegeEscalation: false
+          capabilities:
+            drop:
+            - all
+          readOnlyRootFilesystem: true
+      nodeSelector:
+        beta.kubernetes.io/os: linux
+      securityContext:
+        runAsNonRoot: true
+        runAsUser: 65534
+      serviceAccountName: controller
+      terminationGracePeriodSeconds: 0

pkg/addons/config.go

@@ -122,4 +122,9 @@ var Addons = []*Addon{
 		set:       SetBool,
 		callbacks: []setFn{enableOrDisableStorageClasses},
 	},
+	{
+		name:      "metallb",
+		set:       SetBool,
+		callbacks: []setFn{enableOrDisableAddon},
+	},
 }

pkg/minikube/assets/addons.go

@@ -332,6 +332,20 @@ var Addons = map[string]*Addon{
 			"0640",
 			false),
 	}, false, "ingress-dns"),
+	"metallb": NewAddon([]*BinAsset{
+		MustBinAsset(
+			"deploy/addons/metallb/metallb.yaml",
+			vmpath.GuestAddonsDir,
+			"metallb.yaml",
+			"0640",
+			false),
+		MustBinAsset(
+			"deploy/addons/metallb/metallb-config.yaml.tmpl",
+			vmpath.GuestAddonsDir,
+			"metallb-config.yaml",
+			"0640",
+			true),
+	}, false, "metallb"),
 }
 
 // GenerateTemplateData generates template data for template assets
@@ -345,13 +359,17 @@ func GenerateTemplateData(cfg config.KubernetesConfig) interface{} {
 		ea = "-" + runtime.GOARCH
 	}
 	opts := struct {
-		Arch            string
+		Arch                string
-		ExoticArch      string
+		ExoticArch          string
-		ImageRepository string
+		ImageRepository     string
+		LoadBalancerStartIP string
+		LoadBalancerEndIP   string
 	}{
-		Arch:            a,
+		Arch:                a,
-		ExoticArch:      ea,
+		ExoticArch:          ea,
-		ImageRepository: cfg.ImageRepository,
+		ImageRepository:     cfg.ImageRepository,
+		LoadBalancerStartIP: cfg.LoadBalancerStartIP,
+		LoadBalancerEndIP:   cfg.LoadBalancerEndIP,
 	}
 
 	return opts

pkg/minikube/config/types.go

@@ -71,19 +71,21 @@ type MachineConfig struct {
 
 // KubernetesConfig contains the parameters used to configure the VM Kubernetes.
 type KubernetesConfig struct {
-	KubernetesVersion string
+	KubernetesVersion   string
-	ClusterName       string
+	ClusterName         string
-	APIServerName     string
+	APIServerName       string
-	APIServerNames    []string
+	APIServerNames      []string
-	APIServerIPs      []net.IP
+	APIServerIPs        []net.IP
-	DNSDomain         string
+	DNSDomain           string
-	ContainerRuntime  string
+	ContainerRuntime    string
-	CRISocket         string
+	CRISocket           string
-	NetworkPlugin     string
+	NetworkPlugin       string
-	FeatureGates      string // https://kubernetes.io/docs/reference/command-line-tools-reference/feature-gates/
+	FeatureGates        string // https://kubernetes.io/docs/reference/command-line-tools-reference/feature-gates/
-	ServiceCIDR       string // the subnet which kubernetes services will be deployed to
+	ServiceCIDR         string // the subnet which kubernetes services will be deployed to
-	ImageRepository   string
+	ImageRepository     string
-	ExtraOptions      ExtraOptionSlice
+	LoadBalancerStartIP string
+	LoadBalancerEndIP   string
+	ExtraOptions        ExtraOptionSlice
 
 	ShouldLoadCachedImages bool
 	EnableDefaultCNI       bool