118 lines
3.3 KiB
YAML
118 lines
3.3 KiB
YAML
#cloud-config
|
|
merge_how: dict(recurse_array)+list(append)
|
|
write_files:
|
|
- path: /etc/kubernetes/examples/replication-controller.yaml
|
|
owner: "root:root"
|
|
permissions: "0644"
|
|
content: |
|
|
apiVersion: v1
|
|
kind: ReplicationController
|
|
metadata:
|
|
name: nginx-controller
|
|
spec:
|
|
replicas: 2
|
|
# selector identifies the set of pods that this
|
|
# replication controller is responsible for managing
|
|
selector:
|
|
name: nginx
|
|
# template defines the 'cookie cutter' used for creating
|
|
# new pods when necessary
|
|
template:
|
|
metadata:
|
|
labels:
|
|
# Important: these labels need to match the selector above
|
|
# The api server enforces this constraint.
|
|
name: nginx
|
|
spec:
|
|
containers:
|
|
- name: nginx
|
|
image: nginx
|
|
ports:
|
|
- containerPort: 80
|
|
|
|
- path: /etc/kubernetes/examples/pod-nginx-with-label.yaml
|
|
owner: "root:root"
|
|
permissions: "0644"
|
|
content: |
|
|
apiVersion: v1
|
|
kind: Pod
|
|
metadata:
|
|
name: nginx
|
|
labels:
|
|
app: nginx
|
|
spec:
|
|
containers:
|
|
- name: nginx
|
|
image: nginx
|
|
ports:
|
|
- containerPort: 80
|
|
|
|
- path: /etc/kubernetes/examples/service.yaml
|
|
owner: "root:root"
|
|
permissions: "0644"
|
|
content: |
|
|
apiVersion: v1
|
|
kind: Service
|
|
metadata:
|
|
name: nginx-service
|
|
spec:
|
|
ports:
|
|
- port: 8000 # the port that this service should serve on
|
|
# the container on each pod to connect to, can be a name
|
|
# (e.g. 'www') or a number (e.g. 80)
|
|
targetPort: 80
|
|
protocol: TCP
|
|
# just like the selector in the replication controller,
|
|
# but this time it identifies the set of pods to load balance
|
|
# traffic to.
|
|
selector:
|
|
app: nginx
|
|
|
|
- path: /etc/kubernetes/examples/README.md
|
|
owner: "root:root"
|
|
permissions: "0644"
|
|
content: |
|
|
Kubernetes 101 (http://kubernetes.io/v1.0/docs/user-guide/walkthrough/README.html)
|
|
==================================================================================
|
|
|
|
List all nodes:
|
|
|
|
kubectl get nodes
|
|
|
|
Replication Controllers:
|
|
|
|
kubectl create -f /etc/kubernetes/examples/replication-controller.yaml
|
|
kubectl get rc
|
|
kubectl delete rc nginx-controller
|
|
|
|
Pods:
|
|
|
|
kubectl create -f /etc/kubernetes/examples/pod-nginx-with-label.yaml
|
|
kubectl get pods
|
|
curl http://$(kubectl get pod nginx -o=template -t={{.status.podIP}})
|
|
|
|
Services:
|
|
|
|
kubectl create -f /etc/kubernetes/examples/service.yaml
|
|
kubectl get services
|
|
|
|
export SERVICE_IP=$(kubectl get service nginx-service -o=template -t={{.spec.clusterIP}})
|
|
export SERVICE_PORT=$(kubectl get service nginx-service -o=template '-t={{(index .spec.ports 0).port}}')
|
|
curl http://${SERVICE_IP}:${SERVICE_PORT}
|
|
|
|
kubectl delete service nginx-service
|
|
|
|
Troubleshooting:
|
|
|
|
kubectl get events
|
|
|
|
kubectl describe rc nginx-controller
|
|
|
|
kubectl describe pod nginx
|
|
|
|
kubectl describe service nginx-service
|
|
|
|
kubectl exec nginx env
|
|
|
|
kubectl exec -ti nginx -- bash
|