Add jvm example

Author: MathieuCesbron

example/jvm/Dockerfile

@@ -0,0 +1,9 @@
+FROM openjdk:17-jdk-alpine
+
+WORKDIR /app
+
+COPY Main.java /app/Main.java
+
+RUN javac Main.java
+
+CMD ["java", "-Xms80m", "Main"]

example/jvm/Main.java

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+public class Main {
+    public static void main(String[] args) {
+        try {
+            System.out.println("Application is waiting indefinitely...");
+            while (true) {
+                Thread.sleep(Long.MAX_VALUE);
+            }
+        } catch (InterruptedException e) {
+            System.out.println("Application interrupted");
+        }
+    }
+}

example/jvm/jvm.yaml

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+# Create a service account, role, roleBinding and a Pod.
+# The Pod will have Kondense enabled and will do dynamic resources resize of the nginx container.
+---
+apiVersion: v1
+kind: ServiceAccount
+metadata:
+  name: kondense-user
+  namespace: default
+---
+apiVersion: rbac.authorization.k8s.io/v1
+kind: Role
+metadata:
+  name: kondense
+rules:
+  - apiGroups: [""]
+    resources: ["pods"]
+    verbs: ["get", "list", "watch", "patch"]
+  - apiGroups: [""]
+    resources: ["pods/exec"]
+    verbs: ["create"]
+---
+apiVersion: rbac.authorization.k8s.io/v1
+kind: RoleBinding
+metadata:
+  name: kondense
+subjects:
+  - kind: ServiceAccount
+    name: kondense-user
+    namespace: default
+roleRef:
+  apiGroup: rbac.authorization.k8s.io
+  kind: Role
+  name: kondense
+---
+apiVersion: v1
+kind: Pod
+metadata:
+  name: kondense-test
+spec:
+  serviceAccountName: kondense-user
+  containers:
+  - name: jvm-test
+    image: jvm
+    imagePullPolicy: Never
+    resources:
+      limits:
+        cpu: 100m
+        memory: 100M
+  - name: kondense
+    image: kondense/kondense:1.1.0
+    resources:
+      limits:
+        cpu: 80m
+        memory: 50M