新增learn-kubernetes（https://github.com/yyong-brs/learn-kubernetes）相关文件

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
+```