test graceful shutdown

0-base/Dockerfile

@@ -1,4 +1,4 @@
 FROM busybox
 WORKDIR /app
 ADD . .
-ENTRYPOINT ./main.sh
+ENTRYPOINT ["./main.sh"]

0-base/kubernetes.yaml

@@ -16,5 +16,11 @@ spec:
       containers:
       - name: example-html
         image: example-html-image
+        terminationGracePeriodSeconds: 15
         ports:
         - containerPort: 8000
+        env:
+        - name: POD_NAME
+          valueFrom:
+            fieldRef:
+              fieldPath: metadata.name

0-base/main.sh

@@ -1,4 +1,11 @@
 #!/bin/sh
 
+trap 'echo $POD_NAME received TERM' TERM
+
 echo "Serving files on port 8000"
-busybox httpd -f -p 8000
+while :
+do
+   sleep 5 &
+   wait $!
+   echo "Pod alive $POD_NAME"
+done