Merge pull request #12 from nicholaskuechler/adds-prometheus

feat: adds metallb

README.md

@@ -40,6 +40,10 @@ traffic and utilize ArgoCD to deploy the rest of the stack. We'll call that
 ./bootstrap/bootstrap.sh
 ```
 
+### (Optional) Install MetalLB
+
+[Install MetalLB](./components/20-metallb/README.md)
+
 
 At this point ArgoCD can start doing the heavy lifting.
 
@@ -76,3 +80,4 @@ components which aren't working with GitOps methods at this time.
 [Install Keystone](./components/keystone/README.md)
 
 [Configure environment for Keystone/Dex auth](./components/dexidp/README.md).
+

bootstrap/metallb/README.md

@@ -0,0 +1,28 @@
+# MetalLB
+
+We can use metallb with a couple unused IP addresses to provide
+the Kubernetes LoadBalancer service type.
+
+## Install MetalLB
+
+```bash
+cd components/20-metallb/
+kubectl kustomize . | kubectl create -f -
+```
+
+## Edit and apply metallb config with our IP addresses
+
+Things to change:
+* IPAddressPool list of IPs
+* L2Advertisement network interface name
+
+```bash
+vim example-create-metallb.yaml
+kubectl apply -f example-create-metallb.yaml
+```
+
+## Simple test application to test if it's working
+
+```bash
+kubectl apply -f example-app-with-lb.yaml
+```

bootstrap/metallb/example-app-with-lb.yaml

@@ -0,0 +1,33 @@
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: hello-kubernetes
+spec:
+  type: LoadBalancer
+  ports:
+  - port: 80
+    targetPort: 8080
+  selector:
+    app: hello-kubernetes
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: hello-kubernetes
+spec:
+  replicas: 3
+  selector:
+    matchLabels:
+      app: hello-kubernetes
+  template:
+    metadata:
+      labels:
+        app: hello-kubernetes
+    spec:
+      containers:
+      - name: hello-kubernetes
+        image: paulbouwer/hello-kubernetes:1.8
+        ports:
+        - containerPort: 8080
+---

bootstrap/metallb/example-create-metallb.yaml

@@ -0,0 +1,30 @@
+---
+apiVersion: metallb.io/v1beta1
+kind: IPAddressPool
+metadata:
+  name: lb-external
+  namespace: metallb-system
+spec:
+  addresses:
+  - 10.22.37.207/32  # This is assumed to be the public LB vip address
+  - 10.22.37.208/32
+  - 10.22.37.209/32
+  - 10.22.37.210/32
+  - 10.22.37.211/32
+  - 10.22.37.212/32
+  - 10.22.37.213/32
+  autoAssign: true
+---
+apiVersion: metallb.io/v1beta1
+kind: L2Advertisement
+metadata:
+  name: lb-external-advertisement
+  namespace: metallb-system
+spec:
+  ipAddressPools:
+  - lb-external
+  # nodeSelectors:  # Optional block to limit nodes for a given advertisement
+  # - matchLabels:
+  #     kubernetes.io/hostname: xs0018.b0013.ord.ohthree.com
+  interfaces:  # Optional block to limit ifaces used to advertise VIPs
+  - ens1f0

bootstrap/metallb/kustomization.yaml

@@ -0,0 +1,6 @@
+---
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+
+resources:
+  - https://raw.githubusercontent.com/metallb/metallb/v0.14.3/config/manifests/metallb-native.yaml