amoAHCP

Profiling JVM on Kubernetes using VisualVM

Enable JMX server

Edit Dockerfile to enable JMX server and change the hostname with the IP where the container will run:

FROM openjdk:8-jre-alpine
ADD ./target/app.jar app.jar
EXPOSE 8080
ENTRYPOINT java -Dcom.sun.management.jmxremote.rmi.port=9090 -Dcom.sun.management.jmxremote=true -Dcom.sun.management.jmxremote.port=9090 -Dcom.sun.management.jmxremote.ssl=false -Dcom.sun.management.jmxremote.authenticate=false -Dcom.sun.management.jmxremote.local.only=false -Djava.rmi.server.hostname=192.168.1.2 -jar app.jar

amoAHCP

FROM alpine

COPY configure-node.sh configure-node.sh

CMD ["/bin/sh", "configure-node.sh"]

amoAHCP

FROM openjdk:9-jdk-sid AS builder


WORKDIR /app

COPY target/vxms-core-demo-1.2-SNAPSHOT.jar .
COPY target/mod/ .


RUN jlink --module-path vxms-core-demo-1.2-SNAPSHOT.jar:mod:$JAVA_HOME/jmods \

amoAHCP

<!--
  ~ Copyright [2018] [Andy Moncsek]
  ~
  ~ Licensed under the Apache License, Version 2.0 (the "License");
  ~ you may not use this file except in compliance with the License.
  ~ You may obtain a copy of the License at
  ~
  ~     http://www.apache.org/licenses/LICENSE-2.0
  ~
  ~ Unless required by applicable law or agreed to in writing, software

amoAHCP

package org.jacpfx;

import io.fabric8.kubernetes.api.model.EndpointSubset;
import io.fabric8.kubernetes.api.model.EndpointsList;
import io.fabric8.kubernetes.client.Config;
import io.fabric8.kubernetes.client.ConfigBuilder;
import io.fabric8.kubernetes.client.DefaultKubernetesClient;
import io.fabric8.kubernetes.client.KubernetesClient;
import io.vertx.core.DeploymentOptions;
import io.vertx.core.Future;

amoAHCP

 /**
   * Discovers the nodes. It queries all endpoints (services) with a label `label` set to `labelValue`. By default,
   * it's `vertx-cluster=true`.  When no endpoints were found, all endpoints in namespace without specific label are queried.
   *
   * @return the list of discovery nodes
   */
  @Override
  public Iterable<DiscoveryNode> discoverNodes() {
    EndpointsList list = client.endpoints().inNamespace(namespace).withLabel(label, labelValue).list();

amoAHCP

apiVersion: v1
kind: Service
metadata:
  name: etcd-client
spec:
  ports:
  - name: etcd-client-port
    port: 2379
    protocol: TCP
    targetPort: 2379

amoAHCP

/*
 * Copyright (c) 2015, Christoph Engelbert (aka noctarius) and
 * contributors. All rights reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *

amoAHCP

/*
 * Copyright (c) 2015, Christoph Engelbert (aka noctarius) and
 * contributors. All rights reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *

amoAHCP

  OAuth2Auth authProvider = OAuth2Auth.create(vertx, OAuth2FlowType.AUTH_CODE, new JsonObject()
                .put("clientID", "xxxx")
                .put("clientSecret", "xxxx")
                .put("site", "https://github.com/login")
                .put("tokenPath", "/oauth/access_token")
                .put("authorizationPath", "/oauth/authorize"));


        // create a oauth2 handler on our domain: "http://localhost:8080"
        OAuth2AuthHandler oauth2 = OAuth2AuthHandler.create(authProvider, "http://localhost:8080");