kubernetes-yaml/learn/learn-kubernetes-master/kiamol/ch08/lab

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 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 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