docs: start building out multi-cluster example

deploy/bundle.yaml

@@ -1224,7 +1224,7 @@ data:
   cluster-domain: "cluster.local"
   # TODO: Currently IPv6 address space is computed at bootstrap,
   # But we should allow this to be configured with the IPv4 address space.
-  pod-cidr: "10.42.0.0/16,fd00:10:24::/48"
+  pod-cidr: "10.42.0.0/16,fd00:10:42::/48"
   service-cidr: "10.96.0.0/12,fd00:10:96::/112"
   # The network config to install on each node.
   # You can enable/disable IPv4/IPv6 on dual-stack nodes by adjusting the

deploy/config/configmap.yaml

@@ -12,7 +12,7 @@ data:
   cluster-domain: "cluster.local"
   # TODO: Currently IPv6 address space is computed at bootstrap,
   # But we should allow this to be configured with the IPv4 address space.
-  pod-cidr: "10.42.0.0/16,fd00:10:24::/48"
+  pod-cidr: "10.42.0.0/16,fd00:10:42::/48"
   service-cidr: "10.96.0.0/12,fd00:10:96::/112"
   # The network config to install on each node.
   # You can enable/disable IPv4/IPv6 on dual-stack nodes by adjusting the

examples/multi-cluster/.gitignore

@@ -0,0 +1 @@
+*.kubeconfig

examples/multi-cluster/cluster-one.yaml

@@ -1,6 +1,6 @@
 kind: Cluster
 apiVersion: kind.x-k8s.io/v1alpha4
-name: webmesh-cni
+name: multi-cluster-one
 networking:
   ipFamily: dual
   disableDefaultCNI: true
@@ -12,7 +12,3 @@ nodes:
   extraMounts:
   - hostPath: /dev/net/tun
     containerPath: /dev/net/tun
-- role: worker
-  extraMounts:
-  - hostPath: /dev/net/tun
-    containerPath: /dev/net/tun

examples/multi-cluster/cluster-two.yaml

@@ -1,6 +1,6 @@
 kind: Cluster
 apiVersion: kind.x-k8s.io/v1alpha4
-name: webmesh-cni
+name: multi-cluster-two
 networking:
   ipFamily: dual
   disableDefaultCNI: true
@@ -12,7 +12,3 @@ nodes:
   extraMounts:
   - hostPath: /dev/net/tun
     containerPath: /dev/net/tun
-- role: worker
-  extraMounts:
-  - hostPath: /dev/net/tun
-    containerPath: /dev/net/tun

examples/multi-cluster/setup.sh

@@ -0,0 +1,33 @@
+#!/bin/bash
+
+CLUSTER_NAME_PREFIX=${CLUSTER_NAME_PREFIX:-multi-cluster}
+
+set -ex
+
+# Create the clusters
+
+kind create cluster \
+    --name ${CLUSTER_NAME_PREFIX}-one \
+    --config ./cluster-one.yaml \
+    --kubeconfig ./cluster-one.kubeconfig
+kubectl --kubeconfig ./cluster-one.kubeconfig \
+        config set-context --current --namespace kube-system
+
+kind create cluster \
+    --name ${CLUSTER_NAME_PREFIX}-two \
+    --config ./cluster-two.yaml \
+    --kubeconfig ./cluster-two.kubeconfig
+kubectl --kubeconfig ./cluster-two.kubeconfig \
+        config set-context --current --namespace kube-system
+
+# Install the kubernetes configurations to each cluster
+
+kubectl --kubeconfig ./cluster-one.kubeconfig \
+        --namespace kube-system \
+        create secret generic cluster-two-credentials \
+        --from-file=kubeconfig=./cluster-two.kubeconfig
+
+kubectl --kubeconfig ./cluster-two.kubeconfig \
+        --namespace kube-system \
+        create secret generic cluster-one-credentials \
+        --from-file=kubeconfig=./cluster-one.kubeconfig

examples/multi-cluster/teardown.sh

@@ -0,0 +1,9 @@
+#!/bin/bash
+
+CLUSTER_NAME_PREFIX=${CLUSTER_NAME_PREFIX:-multi-cluster}
+
+set -ex
+
+kind delete cluster --name ${CLUSTER_NAME_PREFIX}-one
+kind delete cluster --name ${CLUSTER_NAME_PREFIX}-two
+rm -f cluster-one.kubeconfig cluster-two.kubeconfig