update k3d example to work with k3d v4.0.0 (#510)

example/k3d/README.md

@@ -9,7 +9,7 @@ that
 - Kubectl
 - Docker
 - [Tanka >= v0.9.2](https://github.com/grafana/tanka)
-- [k3d >= v1.5.1 < v3.0.0](https://github.com/rancher/k3d)
+- [k3d >= v4.0.0](https://github.com/rancher/k3d)
 
 ## Getting Started
 
@@ -21,17 +21,14 @@ Run the following to create your cluster:
 # Create a new k3d cluster
 ./scripts/create.bash
 
-# Merge the k3d cluster config with your local kubectl config
-./scripts/merge_k3d.bash
-
 # Import images into k3d if they are not available on docker hub
-k3d import-images -n agent-k3d grafana/agent
-k3d import-images -n agent-k3d grafana/agentctl
+k3d image import -c agent-k3d grafana/agent:latest
+k3d image import -c agent-k3d grafana/agentctl:latest
 
 tk apply ./environment
 
-# Navigate to localhost:30080 in your browser to view dashboards
+# Navigate to grafana.k3d.localhost:30080 in your browser to view dashboards
 
 # Delete the k3d cluster when you're done with it
-k3d delete -n agent-k3d
+k3d cluster delete agent-k3d
 ```

example/k3d/environment/main.jsonnet

@@ -6,7 +6,11 @@ local k = import 'ksonnet-util/kausal.libsonnet';
 local loki_config = import 'default/loki_config.libsonnet';
 local grafana_agent = import 'grafana-agent/v1/main.libsonnet';
 
+local ingress = k.networking.v1beta1.ingress;
+local path = k.networking.v1beta1.httpIngressPath;
+local rule = k.networking.v1beta1.ingressRule;
 local service = k.core.v1.service;
+
 local images = {
   agent: 'grafana/agent:latest',
   agentctl: 'grafana/agentctl:latest',
@@ -15,14 +19,16 @@ local images = {
 {
   default: default.new(namespace='default') {
     grafana+: {
-      // Expose Grafana on 30080 on the k3d agent, which is exposed to the host
-      // machine.
-      service+:
-        local bindNodePort(port) = port { nodePort: port.port + 30000 };
-        service.mixin.spec.withPorts([
-          { name: 'grafana', nodePort: 30080, port: 30080, targetPort: 80 },
-        ]) +
-        service.mixin.spec.withType('NodePort'),
+      ingress+:
+        ingress.new('grafana-ingress') +
+        ingress.mixin.spec.withRules([
+          rule.withHost('grafana.k3d.localhost') +
+          rule.http.withPaths([
+            path.withPath('/')
+            + path.backend.withServiceName('grafana')
+            + path.backend.withServicePort(80),
+          ]),
+        ]),
     },
   },
 

example/k3d/environment/spec.json

@@ -5,7 +5,7 @@
     "name": "default"
   },
   "spec": {
-    "apiServer": "https://localhost:50443",
+    "apiServer": "https://0.0.0.0:50443",
     "namespace": "default"
   }
 }

example/k3d/scripts/create.bash

@@ -1,8 +1,10 @@
 #!/usr/bin/env bash
 
-k3d create \
-  --name agent-k3d \
-  --publish 30080:30080 \
+k3d cluster create agent-k3d \
+  --port 30080:80@loadbalancer \
   --api-port 50443 \
   -v /var/lib/k3d/agent-k3d/storage/:/var/lib/rancher/k3s/storage/ \
-  -v /etc/machine-id:/etc/machine-id
+  -v /etc/machine-id:/etc/machine-id \
+  --kubeconfig-update-default=true \
+  --kubeconfig-switch-context=true \
+  --wait