- Clone this repo
- Request an account to the support (support-icit@epfl.ch)
- If you plan to use a shared storage, request a volume to the support
- Install and Set Up kubectl - https://kubernetes.io/docs/tasks/tools/install-kubectl/
- Check if you setup works correctly
$ kubectl get pods
No resources found$ kubectl create -f ubuntu.yaml
pod "ubuntu" createdNow list all pods running:
$ kubectl get pods
NAME READY STATUS RESTARTS AGE
ubuntu 1/1 Running 0 13sYou can log in to your pod
$ kubectl exec -it ubuntu -- /bin/bash
root@ubuntu:/# exit
exit-
Request a volume to the support (support-icit@epfl.ch)
-
Create the Pods
1.1. Change the values for the name and the label in yaml files
1.2. Change the value for the "claimName" with the name provided by the support
1.3. You can also change settings like the root password with the environment variables in the yaml file for mysql pod
-
Create a nginx pod
$ kubectl create -f pod-nginx.yaml
pod "caperez-pod-nginx" createdIn this example, the sub folder "nginx" from the shared volume will be mounted /usr/share/nginx/html in the pod
Create a mysql pod
$ kubectl create -f pod-mysql.yaml
pod "caperez-pod-mysql" createdThe sub folder "mysql" from the shared volume will be mounted /var/lib/mysql in the pod
Create a ubuntu pod to check the two folders
$ kubectl create -f pod-ubuntu-pvc.yaml
Error from server (AlreadyExists): error when creating "ubuntu.yaml": object is being deleted: pods "ubuntu" already existsIn this case, the ubuntu pod already exist. Suppress it, wait a while and try again.
$ kubectl delete -f ubuntu.yaml
pod "ubuntu" deleted
....
$ kubectl create -f pod-ubuntu-pvc.yaml
pod "ubuntu" created
$ kubectl exec -it ubuntu -- /bin/bash
root@ubuntu:/# ls -l /shared_volume
total 8
drwxr-xr-x 5 999 999 4096 Sep 26 11:33 mysql
drwxr-xr-x 2 root root 4096 Sep 26 11:32 nginx
root@ubuntu:/# We can see the two folders. The pod mounted the shared volume in /shared_volume (without sub folder)
Create a service Load Balancer to access the nginx pod from outside the cluster
$ kubectl create -f svc-nginx.yaml
service "caperez-svc-nginx" createdThe match between your service and the pod is done by the selector > name in the yaml file
$ kubectl get svc
NAME CLUSTER-IP EXTERNAL-IP PORT(S) AGE
caperez-svc-nginx 10.97.55.231 <pending> 80:31804/TCP 41sIn this example, the service is running on port 31804
Check the host where the service is running
$ kubectl get pod caperez-pod-nginx -o yaml | grep hostIP
hostIP: 10.xx.yy.z
$ curl -v http://10.xx.yy.z:31804
* Rebuilt URL to: http://10.xx.yy.z:31804/
* Trying 10.xx.yy.z...
......
<!DOCTYPE html>
<html>
<head>
<title>Welcome to nginx!</title>
...... $ kubectl create -f pod-ubuntu-gpu.yaml
pod "ubuntu-gpu" created
$ kubectl exec -it ubuntu-gpu -- /bin/bash
root@ubuntu-gpu:/# nvidia-smi
Tue Sep 26 14:00:03 2017
+-----------------------------------------------------------------------------+
| NVIDIA-SMI 375.66 Driver Version: 375.66 |
|-------------------------------+----------------------+----------------------+
| GPU Name Persistence-M| Bus-Id Disp.A | Volatile Uncorr. ECC |
| Fan Temp Perf Pwr:Usage/Cap| Memory-Usage | GPU-Util Compute M. |
|===============================+======================+======================|
| 0 GeForce GTX TIT... Off | 0000:04:00.0 Off | N/A |
| 0% 38C P0 52W / 250W | 0MiB / 12207MiB | 0% Default |
+-------------------------------+----------------------+----------------------+
+-----------------------------------------------------------------------------+
| Processes: GPU Memory |
| GPU PID Type Process name Usage |
|=============================================================================|
| No running processes found |
+-----------------------------------------------------------------------------+
root@ubuntu-gpu:/#