kubernetes-the-hard-way/docs/08-smoke-test.md

2.6 KiB

Smoke Test

This lab walks you through a quick smoke test to make sure things are working.

Test

kubectl run nginx --image=nginx --port=80 --replicas=3
deployment "nginx" created
kubectl get pods -o wide
NAME                     READY     STATUS    RESTARTS   AGE       IP           NODE
nginx-2032906785-ms8hw   1/1       Running   0          21s       10.200.2.2   worker2
nginx-2032906785-sokxz   1/1       Running   0          21s       10.200.1.2   worker1
nginx-2032906785-u8rzc   1/1       Running   0          21s       10.200.0.2   worker0
kubectl expose deployment nginx --type NodePort
service "nginx" exposed

Note that --type=LoadBalancer will not work because we did not configure a cloud provider when bootstrapping this cluster.

export NODE_PORT=$(kubectl get svc nginx --output=jsonpath='{range .spec.ports[0]}{.nodePort}')
gcloud compute firewall-rules create kubernetes-nginx-service \
  --allow=tcp:${NODE_PORT} \
  --network kubernetes
gcloud compute instances list
NAME         ZONE           MACHINE_TYPE   PREEMPTIBLE  INTERNAL_IP  EXTERNAL_IP      STATUS
controller0  us-central1-f  n1-standard-1               10.240.0.20  XXX.XXX.XXX.XXX  RUNNING
controller1  us-central1-f  n1-standard-1               10.240.0.21  XXX.XXX.XXX.XXX  RUNNING
controller2  us-central1-f  n1-standard-1               10.240.0.22  XXX.XXX.XXX.XXX  RUNNING
etcd0        us-central1-f  n1-standard-1               10.240.0.10  XXX.XXX.XXX.XXX  RUNNING
etcd1        us-central1-f  n1-standard-1               10.240.0.11  XXX.XXX.XXX.XXX  RUNNING
etcd2        us-central1-f  n1-standard-1               10.240.0.12  XXX.XXX.XXX.XXX  RUNNING
worker0      us-central1-f  n1-standard-1               10.240.0.30  XXX.XXX.XXX.XXX  RUNNING
worker1      us-central1-f  n1-standard-1               10.240.0.31  XXX.XXX.XXX.XXX  RUNNING
worker2      us-central1-f  n1-standard-1               10.240.0.32  XXX.XXX.XXX.XXX  RUNNING
curl http://XXX.XXX.XXX.XXX:${NODE_PORT}
<!DOCTYPE html>
<html>
<head>
<title>Welcome to nginx!</title>
<style>
    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>