Uma perspetiva de futuro no desenvolvimento de aplicativos Cloud Native

Carlos Vicens AlonsoAppDev Specialist Solution ArchitectRed Hat

Carlos Vicens AlonsoAppDev Specialist Solution ArchitectRed Hat

RED HAT FORUM 2019

Introductions

Alberto torresSolution ArchitectMadrid, Spain

Carlos VicensSpecialist Solution ArchitectMadrid, Spain

RED HAT FORUM 2019

01. What’s a Cloud Native App?02. Challenges to build Cloud Native Apps

03. What tools can I use to build Cloud Native Apps effectively?04. Building a Cloud Native App today and tomorrow

05. Demo

Índice

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01. What’s a Cloud Native App?How different are from the other apps?

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Cloud Native App

Cloud-native applications are a collection of small,independent, and loosely coupled services.

They are designed to deliver well recognized businessvalue, like the ability to rapidly incorporate userfeedback for continuous improvement.

In short, cloud-native app development is a way tospeed up how you build new applications, optimizeexisting ones, and connect them all together. Its goal isto deliver apps users want at the pace a business needs.

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Wait, wait, wait, wait!

First things first

What does Cloud Native mean?

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Cloud Native

❏Born and raised in the Cloud?❏ Prepared for the Cloud?❏Runs on a Cloud?❏ It’s made of Cloud?

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NO, Seriously… you can do better

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Cloud Native

The first time I heard this term…

it meant ready to run on a public cloud takingadvantage of it.

And there were some challenges there thatmade running apps in the cloud ‘different’

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You mean, Cheap linux boxes running VMs that could (would) break eventually?

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Cloud Native

Yessss…

I’d say that in order to be cloud native you haveto take that into account… you’re app needs tobe ready for your VM to disappear!

So...

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● Don’t store data (unless temp) in your VM…● Make them light● Be ready for different latencies across the globe…● Have a golden image you can use over and over to

deploy copies?● ...

Cloud Native

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VMs… it sounds a bit rusty… doesn’t it?

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Well… yes… maybe there’s a better way to cope with these challenges...

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Containers maybe?Kubernetes perhaps?

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Cloud Native Apps as per CNCF

Cloud native technologies empower organizations to build and run scalable applications in modern, dynamic environments such as public, private, and hybrid clouds. Containers, service meshes, microservices, immutable infrastructure, and declarative APIs exemplify this approach.

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In simple (even rude) terms a cloud native app should be scalable, consistent, resilient and

capable of running in public, private or hybrid CLOUDS... (sMALL as a microservice?)

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Clour Native Apps need to scale in a cloud environment, potentially from zero to thousands of instances…

In general the key metric in cloud environments is memory-time, for instance 400,000 GB-SECONDS

Cloud Native Apps

So your apps should use as less memory as possible the shortest possible time

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02. Challenges to build cloud native appsOr how easy is looks until you really have your

hands dirty...

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03. Red Hat Tooling to help with these challenges

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A stack to write Java apps

Cloud Native, Microservices, Serverless

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WHAT MAKES QUARKUS DIFFERENT?

CompileProvision(curate)

Wiring & Assemble(augment) AOT Native

Compilation

Hotspot Runnable & Image

Native Executable & Image

app.jar frameworks

Runnable java app

Native-app(GraalVM)

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REST + CRUD

Quarkus + GraalVM 0.055 Seconds

Quarkus + OpenJDK 2.5 Seconds

Traditional Cloud-Native Stack 9.5 Seconds

REST + CRUD

Quarkus + GraalVM

35 MBQuarkus + OpenJDK

130 MBTraditional Cloud-Native Stack

218 MB

SUPERSONIC SUBATOMIC JAVA

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A cohesive platform for optimized developer joy:

● Based on standards, but not limited

● Unified configuration

● Zero config, live reload in the blink of an eye

● Streamlined code for the 80% common usages,

flexible for the 20%

● No hassle native executable generation

Quarkus is designed for Developer Joy

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Best of Breed Frameworks & Standards

Eclipse Vert.x Hibernate RESTEasy Apache Camel Eclipse MicroProfile Netty

Kubernetes OpenShift Jaeger Prometheus Apache Kafka Infinispan

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Key Features

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Learn more

https://openshift.com/learn/topics/serverless

https://redhat-developer-demos.github.io/knative-tutorial

Developer Console in 4.2

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OpenShift Serverless - Lifecycle

CHE/VSCODE/IDE TEKTON KNATIVE SERVING

User Application(Service)

REVISION 1

REVISION 2

REVISION 3

"Hello!"

CODE v1

CODE v2

"Hello World!"

CODE v3

"Hello World, ${user}!"

BUILD RUN RUNCODE BUILD

10%

10%

80%PIPELINE

PIPELINE

PIPELINE

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OpenShift PipelinesCloud Native CI/CD

Based on the Tekton project

(which was spun out of the

Knative Pipelines project)

started by Google, Red Hat

and others. Provides a next-

gen Kubernetes CI/CD

pipeline that works for

containers (including

serverless).

Tech Preview4.3

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Goal: Help developers find the tools to get the most out of our

platforms.

Red Hat CodeReady Workspaces (supported Eclipse Che)

Red Hat CodeReady Containers (local laptop install of OpenShift 4)

Red Hat CodeReady Studio (ex-DevStudio)

Red Hat CodeReady Builder (tools for building on RHEL)

Red Hat CodeReady Toolchain (a hybrid cloud devops toolchain)

The Red Hat CodeReady

PortfolioA Sub-Brand for Developers

GA (3.x and 4.x)

Beta

GA

GA

Pre-Alpha

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Dev Console For OpenShift

GAOpenShift 4.2

Kubernetes Extension Improvements

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OpenShift Improvements

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GA3.x and 4.x

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CodeReady Containers: OpenShift on your Laptop

Desktop virtualization

Red Hat Enterprise Linux OpenShift

Use It To: Simplify direct-to-OpenShift development on laptops.

$ crc setupPrepare your machine for running OpenShift

$ crc start -b crc-hyperkit-4.2.0.crcbundleStart with the Hyperkit 4.2 bundle

$ crc statusGet the status of the cluster

CodeReady ContainersGA in OpenShift 4.2

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odo - OpenShift’s Dev-Focused CLI

Developer focused clients

$ odo create wildfly backendComponent ‘backend’ was created.

$ odo pushPushing changes to component: backend

$ odo create php frontendComponent ‘frontend’ was created.To push source code to the component run ‘odo push’

$ odo pushPushing changes to component: frontend

$ odo url createfrontend - http://frontend-myapp.192.168.99.100.nip.io

$ odo watchWaiting for something to change in /dev/frontend

Developer-focused CLI for rapid development iterations on OpenShift

Simplifies building of microservices applications on OpenShift.

Use It To: Enable the ‘git push’ flow developers love, but with OpenShift Kubernetes.

GAOpenShift 4.2

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Just click a link and start coding, running, or debugging.

Red Hat CodeReady Workspaces

Based on Eclipse Che 7

● Kubernetes-based developer workspaces: Fully

containerized developer workspaces allowing to bring

your K8S application runtime easily in your dev

environment.

● New Editor: New default web-based editor provides a

VSCode like experience in the browser.

● Devfile: Configure a devfile for your project and get

reproducible and portable developer environments.

● VSCode plug-ins compatibility

● Swappable Editor

● OpenShift VSCode Plug-in

● Easier to Monitor and Administrate: Prometheus and

Grafana dashboards.

Shipped independently from 4.2, targeted for Oct 29

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Hosted Eclipse Che on OpenShift

● Learn to build cloud-native

applications on OpenShift.

● Use Eclipse Che or CodeReady

Workspaces for on-premises

environments.

Try it now at che.openshift.io

Develop, Debug, Test from your browser

A suite of dev tools and services, and support DevOps for development and deployment of cloud-native applications on OpenShift

Create, build, test, deploy cloud-native applications

Based on OpenShift

App Dev Experience

Red Hat CodeReady Toolchain

Focus on delivering business value, around a trusted source

Open Integration

Leverage existing investment in tools and processes

Dev Tools & Services

In Development

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VS Code and Red Hat?

● Our first extension (for Java language support) was published in Sept, 2016 as an experiment.

● 3 years later, it’s been downloaded over 20 million times by over 3.5 Million developers!

● Added extensions for Java, XML, Yaml, etc., or when working with OpenShift, EAP, Fuse or other Red Hat technologies.

● Upcoming: Extensions for Quarkus and Tekton

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Now you can create a new project right from a user interface in VS Code. This can be done through a new wizard that generates Maven-based Quarkus projects with the latest version of Quarkus.

The new VS Code extension is dependent on a couple of Java extensions for VS Code, so it is recommended that you have the Java Extension Pack installed.

Quarkus Extension for VS Code

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CodeReady Analytics

Analyzes application stack for open source vulnerabilities, licenses, popularity & maintainability.

Analyze, Report, Update directly from IDE

Simplifies adoption of secure and high quality open source components.

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05. DemoHere comes the fun part!

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Adding PostgreSQL

to the mix

Demo 1

JVM mode: ./mvnw -DskipTests clean packageNative (BIN): ./mvnw -DskipTests clean package -PnativeNative (IMG): … -Dnative-image.docker-build=true

Start creating a

Quarkus scaffold

mvn io.quarkus:quarkus-maven-plugin create

+Logging,

+DI, ...

a) java -jar ./target/atomic-...jarb) ./target/atomic-...runnercurl http://localhost:8080/fruit

mvn compile quarkus:dev

Hot reloading

Fast iteration

oc new-app … postgresql-persistent

mvn quarkus:add-extension -Dextension="quarkus-resteasy-jsonb, …orm-panache"

oc -n ${PROJECT_NAME} port-forward svc/my-database 5432mvn compile quarkus:devcurl http://localhost:8080/fruit

mvn compile quarkus:dev -Dquarkus.profile=cheLive redirection to 8080 fro the Internet!

mvn quarkus:add-extension \-Dextension="health, openapi"

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Demo 2

oc apply -f https://raw.githu…/openshift-deploy-app-task.yaml oc apply -f https://raw.githu…/s2i-quarkus-task.yaml

Building the image

using S2I on OCP

oc new-app quay.io/…-native-s2i~https://github.com/…-fruit-service \--name=atomic-fruit…

oc expose svc/atomic-...

curl http://$(oc get route atomic-fruit-service-native | awk 'NR > 1 { print $2 }')/fruit

oc apply -f https://raw.githu…/atomic-fruit-service-build-pipeline.yamloc apply -f https://raw.githu…/atomic-fruit-service-deploy-pipeline.yaml

oc apply -f https://raw.githu…/atomic-fruit-service-resources.yaml

tkn pipeline start atomic-fruit-service-build-pipeline \

-r app-git=atomic-fruit-service-git \-r app-image=atomic-fruit-service-image \-p APP_NAME=atomic-fruit-service \-p NAMESPACE=${PROJECT_NAME} \-s pipeline

oc apply -f https://raw.githu…//atomic-fruit-knative-service.yaml

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FRASE DESTACADA

MUCHAS GRACIAS