kubernetes-yaml/learn/learn-kubernetes-master/kiamol/ch08/lab/README.md

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# Ch08 lab
Run the app:
```
kubectl apply -f lab/nginx/
```
Get the URL and browse:
```
kubectl get svc nginx -o jsonpath='http://{.status.loadBalancer.ingress[0].*}:8088'
```
> It works, but its just a single Pod writing logs to an EmptyDir.
## Sample Solution
My [StatefulSet](solution/nginx-statefulset.yaml) runs three Pods, with volume claim templates for storage.
```
kubectl apply -f lab/solution/nginx-statefulset.yaml
```
> Make lots of calls to the web app
I used this in Powershell:
```
for($i = 0; $i -lt 100; $i++) { curl http://localhost:8088 | Out-Null }
```
Then the [Job](solution/disk-calc-job.yaml) is configured to mount all of the PVCs used in the StatefulSet Pods.
```
kubectl apply -f lab/solution/disk-calc-job.yaml
```
When I check the logs I see this:
```
PS>kubectl logs -l job-name=disk-calc
32.0K /nginx0/access.log
24.0K /nginx1/access.log
40.0K /nginx2/access.log
```
## Teardown
Delete the lab resources by their labels:
```
kubectl delete all -l kiamol=ch08-lab
kubectl delete pvc -l kiamol=ch08-lab
```