Run cloud-provider-kind in cluster #336
Description
Currently, the documentation describes running cloud-provider-kind outside the cluster using Docker. Would it be possible to support running the cloud provider directly inside a Kind cluster as an optional configuration mode?
kind: Cluster
apiVersion: kind.x-k8s.io/v1alpha4
cloudProvider: trueI was able to get this working successfully by deploying the provider as a Deployment inside the cluster and mounting the host Docker socket (similar to the recommended Docker invocation).
Below is the setup I used.
Kind cluster config:
kind: Cluster
apiVersion: kind.x-k8s.io/v1alpha4
nodes:
- role: control-plane
extraMounts:
- hostPath: /var/run/docker.sock
containerPath: /var/run/docker.sockDeployment config:
---
apiVersion: v1
kind: ServiceAccount
metadata:
name: cloud-provider-kind
namespace: kube-system
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
name: cloud-provider-kind
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: ClusterRole
name: cluster-admin
subjects:
- kind: ServiceAccount
name: cloud-provider-kind
namespace: kube-system
---
apiVersion: apps/v1
kind: Deployment
metadata:
name: cloud-provider-kind
namespace: kube-system
labels:
k8s-app: cloud-provider-kind
spec:
replicas: 1
selector:
matchLabels:
k8s-app: cloud-provider-kind
template:
metadata:
labels:
k8s-app: cloud-provider-kind
spec:
serviceAccountName: cloud-provider-kind
containers:
- name: cloud-provider-kind
image: registry.k8s.io/cloud-provider-kind/cloud-controller-manager:v0.10.0
imagePullPolicy: IfNotPresent
volumeMounts:
- name: docker-sock
mountPath: /var/run/docker.sock
volumes:
- name: docker-sock
hostPath:
path: /var/run/docker.sock
type: SocketResult:
λ k apply -f deploy.yaml
serviceaccount/cloud-provider-kind unchanged
clusterrolebinding.rbac.authorization.k8s.io/cloud-provider-kind unchanged
deployment.apps/cloud-provider-kind configured
λ k get pods -n kube-system
NAME READY STATUS RESTARTS AGE
cloud-provider-kind-667dbfcdbf-769l9 1/1 Running 0 5m34s
coredns-674b8bbfcf-6rh96 1/1 Running 0 7m14s
coredns-674b8bbfcf-p8cgf 1/1 Running 0 7m14s
etcd-kind-control-plane 1/1 Running 0 7m22s
kindnet-8dzzj 1/1 Running 0 7m14s
kube-apiserver-kind-control-plane 1/1 Running 0 7m21s
kube-controller-manager-kind-control-plane 1/1 Running 0 7m21s
kube-proxy-6gdjl 1/1 Running 0 7m14s
kube-scheduler-kind-control-plane 1/1 Running 0 7m22s
λ k create deployment --image nginx nginx
deployment.apps/nginx created
λ k expose deployment nginx --type LoadBalancer --port 80
service/nginx exposed
λ k get svc
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
kubernetes ClusterIP 10.96.0.1 <none> 443/TCP 9m43s
nginx LoadBalancer 10.96.29.211 172.18.0.3 80:30495/TCP 8s
λ curl 172.18.0.3
<!DOCTYPE html>
<html>
<head>
<title>Welcome to nginx!</title>
<style>
html { color-scheme: light dark; }
body { width: 35em; margin: 0 auto;
font-family: Tahoma, Verdana, Arial, sans-serif; }
</style>
</head>
<body>
<h1>Welcome to nginx!</h1>
<p>If you see this page, the nginx web server is successfully installed and
working. Further configuration is required.</p>
<p>For online documentation and support please refer to
<a href="http://nginx.org/">nginx.org</a>.<br/>
Commercial support is available at
<a href="http://nginx.com/">nginx.com</a>.</p>
<p><em>Thank you for using nginx.</em></p>
</body>
</html>I would be more than happy if someone could guide me on how to implement this so that I can contribute it myself 😄