senlin/contrib/kubernetes

kubernetes Profile

Installation

pip install --editable .

Usage

Prepare a profile for master nodes

Copy the example profile file kubemaster.yaml from examples/kubemaster.yaml, modify related parameters based on your openstack environment. For now, only official ubuntu 16.04 cloud image is supported.

openstack cluster profile create --spec-file kubemaster.yaml profile-master

Create a cluster for master nodes

For now, please create exactly one node in this cluster. This profile doesn't support multiple master nodes as high-availability mode install.

openstack cluster create --min-size 1 --desired-capacity 1 --max-size 1 --profile profile-master cm

Prepare a profile for worker nodes

Copy the example profile file kubenode.yaml, modify related parameters, change master-cluster to the senlin cluster you just created.

openstack cluster profile create --spec-file kubenode.yaml profile-node

Create a cluster for worker nodes

openstack cluster create --desired-capacity 2 --profile profile-node cn

Operate kubernetes

About kubeconfig

The config file for kubectl is located in the /root/.kube/config directory on the master nodes. Copy this file out and place it at $HOME/.kube/config. Change the IP to master node's floating IP in it. Run kubectl get nodes and see if it works.

Dashboard

Prepare following file to skip dashboard authentication:

$ cat ./dashboard-admin.yaml
apiVersion: rbac.authorization.k8s.io/v1beta1
kind: ClusterRoleBinding
metadata:
  name: kubernetes-dashboard
  labels:
    k8s-app: kubernetes-dashboard
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: ClusterRole
  name: cluster-admin
subjects:
- kind: ServiceAccount
  name: kubernetes-dashboard
  namespace: kube-system

Apply this config:

kubectl apply -f ./dashboard-admin.yaml

Start a proxy using `kubectl`:

kubectl proxy

Open dashboard on browser at http://localhost:8001/api/v1/namespaces/kube-system/services/https:kubernetes-dashboard:/proxy/, skip login process.