Spring Cloud Apps with Kubernetes

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Cloud Native Night April 2016, Munich: Talk by Mario-Leander Reimer (@LeanderReimer, Principal Software Architect at QAware) and Josef Fuchshuber (@fuchshuber, Principal Software Architect at QAware). Join our Meetup: www.meetup.com/cloud-native-muc Abstract: This talk is on building cloud native applications using Spring Boot, Spring Cloud and Netflix OSS components running with Kubernetes on Google Computing Engine or Amazon AWS. For more information on the Zwitscher Show Case visit: https://github.com/qaware/cloud-native-zwitscher

Daten & Analysen

Spring Cloud Apps with Kubernetes
M.-Leander Reimer (@LeanderReimer) & Josef Fuchshuber (@fuchshuber)

SPRING CLOUD APPS WITH KUBERNETES
THE ZWITSCHER SHOW CASE
KUBERNETES
HTTPS://GITHUB.COM/QAWARE/CLOUD-NATIVE-ZWITSCHER

SPRING CLOUD APPS WITH KUBERNETES
RUN KUBERNETES ON LOCAL MACHINE OR ON TURN-KEY CLOUD SOLUTIONS
export KUBERNETES_PROVIDER=vagrant
export NUM_NODES=1
curl -sS https://get.k8s.io | bash
export KUBERNETES_PROVIDER=aws
export KUBE_AWS_ZONE=eu-central-1a
export NODE_SIZE=t2.small
curl -sS https://get.k8s.io | bash
export KUBE_GCE_ZONE=europe-west1-d
export NUM_NODES=4
curl -sS https://get.k8s.io | bash

SPRING CLOUD APPS WITH KUBERNETES
INFRASTRUCTURE AS CODE IST DAS DEVOPS-ESPERANTO

SPRING CLOUD APPS WITH KUBERNETES
DOCKERIZE IT
ZWITSCHER-BOARD
ZWITSCHER-CONFIG
ZWITSCHER-EDGE
ZWITSCHER-EUREKA
ZWITSCHER-MONITOR
ZWITSCHER-SERVICE
DEBIAN8-JRE8
DEBIAN:8

POD DeploymentPOD Deployment
POD Deployment
SPRING CLOUD APPS WITH KUBERNETES
KUBERNETIZE IT
ZWITSCHER-BOARD
ZWITSCHER-CONFIG
ZWITSCHER-EDGE
ZWITSCHER-EUREKA
ZWITSCHER-MONITORZWITSCHER-SERVICE
POD Deployment POD Deployment POD Deployment
SERVICE SERVICE SERVICE
SERVICE SERVICE
SERVICE

SPRING CLOUD APPS WITH KUBERNETES
K8S DEPLOYMENT DESCRIPTOR EXAMPLE
apiVersion: extensions/v1beta1
kind: Deployment
metadata:
name: zwitscher-service
spec:
replicas: 1
template:
metadata:
labels:
zwitscher: service
spec:
containers:
- name: zwitscher-service
image: "qaware-oss-docker-registry.bintray.io/zwitscher/zwitscher-service"
resources:
requests:
memory: "256Mi"
cpu: "250m"
limits:
memory: "512Mi"
cpu: "500m"
ports:
- containerPort: 8080
livenessProbe:
httpGet:
path: /admin/health
port: 8080
initialDelaySeconds: 90
timeoutSeconds: 5
env:
- name: EUREKA_HOST
value: zwitscher-eureka
1 Docker Container
Health Checks
Resource Limits

SPRING CLOUD APPS WITH KUBERNETES
K8S SERVICE DESCRIPTOR EXAMPLE
apiVersion: v1
kind: Service
metadata:
name: zwitscher-service
labels:
zwitscher: service
spec:
# if your cluster supports it, uncomment the following to automatically create
# an external load-balanced IP for the frontend service. Do not use locally.
# type: LoadBalancer
# sessionAffinity: ClientIP
ports:
- port: 8080
selector:
zwitscher: service

SPRING CLOUD APPS WITH KUBERNETES
KUBERNETES DEPLOYMENT VISUALIZATION USING A NOVATION LAUNCHPAD
Kubernetes Deployment
Running Pods
Selected Deployment
Up/Down & Scale
Click to Start/Stop

SPRING CLOUD APPS WITH KUBERNETES
ALTERNATIVE: ZWITSCHERN WITH NATIVE K8S INFRASTRUCTURE
ZWITSCHER-BOARD
EDGE-SERVER: SERVICES & INGRES
ZWITSCHER-MONITORZWITSCHER-SERVICE
POD Deployment POD Deployment POD Deployment
SERVICE SERVICE SERVICE
CONFIGURATION & COORDINATION: ETCDDISCOVERY: DNS

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QAware GmbH

MedTech Stars, Webkonferenz, September 2023, Josef Adersberger (CEO bei QAware) == Dokument bitte herunterladen, falls unscharf! Please download slides if blurred! == Der Vortrag „Migration von stark regulierten Anwendungen in die Cloud: Dem Teufel die Seele verkaufen oder Himmel auf Erden?“ erkundet das wachsende Bedürfnis und die Herausforderungen, medizinische Anwendungen in die Cloud zu migrieren. Bei den entsprechenden Anwendungen stellt laut einer Umfrage der Datenschutz für 82% der Anwendungen die größte Herausforderung dar, um den Schritt in die Cloud zu machen. Trotzdem wächst der Druck, diesen Schritt zu vollziehen, aufgrund des Innovations- und Digitalisierungsbedarfs, der durch gesetzliche Initiativen wie das Krankenhaus-Zukunftsgesetz, gestiegene Patientenerwartungen und den immer klareren medizinischen Impact der Digitalisierung angetrieben wird. Die zentrale Frage, die in diesem Vortrag erörtert wird, ist, wie man hochregulierte Anwendungen schrittweise in die Cloud migrieren kann. Hierzu werden wir einen Ansatz vorstellen und anhand von exemplarischen Anwendungen demonstrieren, wie eine solche Migration erfolgreich durchgeführt werden kann. Abschließend fassen wir den Vortrag mit fünf leitenden Prinzipien zusammen, die bei der Migration von stark regulierten Anwendungen in die Cloud beachtet werden sollten. Diese Prinzipien bieten einen nützlichen Leitfaden für Unternehmen und Institutionen, die den Umzug ihrer Anwendungen in die Cloud erwägen, und sollen dazu beitragen, die Herausforderungen der Cloud-Migration in diesem hochregulierten Bereich erfolgreich zu bewältigen.

Migration von stark regulierten Anwendungen in die Cloud: Dem Teufel die See...

QAware GmbH

SAA 2023 | Software Architecture Alliance, September 2023, München, Mario-Leander Reimer (@LeanderReimer, CTO bei QAware) == Dokument bitte herunterladen, falls unscharf! Please download slides if blurred! == Die Cloud hat bereits heute einen größeren CO2-Fußabdruck als die Luftfahrtindustrie, mit steigender Digitalisierung und Cloudifizierung wird sich dieser Trend fortsetzen, wenn wir nichts dagegen unternehmen. Viele Kubernetes-basierte Installationen sind gemessen am eigentlich benötigten Ressourcen Bedarf stark überdimensioniert und tragen so unnötig zur globalen Erwärmung bei. Wie sieht die Energiebilanz Ihres Clusters und Workloads aus? In diesem Vortrag zeigen wir Ansätze und Technologien, die dabei helfen K8s-Cluster grün(er) zu machen. Zunächst braucht es Transparenz: Wie sieht die Energiebilanz des Clusters und seiner Workloads aus? Erst danach lassen sich diese gezielt auf ihre Energiesparsamkeit hin optimieren. Und das ist gar nicht so schwer, also packen wir es an!

Aus blau wird grün! Ansätze und Technologien für nachhaltige Kubernetes-Cluster

QAware GmbH

SAA 2023 | Software Architecture Alliance, September 2023, München, Ildikó Tárkányi (Senior Software Engineer bei QAware) == Dokument bitte herunterladen, falls unscharf! Please download slides if blurred! == Der Traum von den unendlichen Weiten der Daten ist schnell ausgeträumt, wenn wir unsere APIs nicht im Griff haben. Dabei ist es egal, ob wir uns APIs zwischen unseren Services, zwischen Frontend und Backend oder zu Fremdsystemen anschauen - APIs sind ein fundamentaler Bestandteil unserer Softwarearchitektur und ohne Testautomatisierung geht gar nichts. Schlecht geschriebene Integrationstests mit selbst erfundenen Testfällen für unsere APIs können richtig nerven: Wir rufen die APIs auf und hoffen, dass genau das zurückkommt, was wir erwarten. Das geht auch anders: Wir werfen einen Blick auf andere Testansätze, bewerten, welche Aspekte diese jeweils testen und schauen zum Beispiel auf: • Contract Based Testing • Black Box Testing der OpenAPI Specs • Trace-basiertes Testing

Endlich gute API Tests. Boldly Testing APIs Where No One Has Tested Before.

QAware GmbH

Cloud Native Night, Munich, September 2023, Bernhard Schaidhammer === Please download slides if blurred! === Cilium is a powerful tool for network policies and also encryption between the Kubernetes nodes. Cilium hooks deep into Kubernetes in the network stack as an plugin and can even replace the AWS CNI Plugin. This talk will share our project experiences. Topics involve: - Network Policies - Encryption - Hubble (Observability) - Installation - CLI Usage (Hubble / Cilium)

Kubernetes with Cilium in AWS - Experience Report!

QAware GmbH

Container Days 2023, September 2023, Hamburg, Mario-Leander Reimer (@LeanderReimer, CTO @QAware). == Dokument bitte herunterladen, falls unscharf! Please download slides if blurred! == Elasticity and unlimited scalability are the holy grail for any cloud-native application. Now you might think: “That’s easy!!! I just run my containers on a Kubernetes cluster and I am done.” But is it really that simple? Turns out it’s not! Your application as well as your cloud infrastructure and K8s cluster need to address and support these non-functional requirements. This session will have a detailed and also practical look at the different ways of autoscaling in Kubernetes. We will give an overview of the technical foundations and prerequisites, and then showcase several frameworks and technologies that can be used to flexibly autoscale your cluster and your cloud-native workloads.

50 Shades of K8s Autoscaling

QAware GmbH

Heise DevSec 2023, September 2023, Karlsruhe, Mario-Leander Reimer (@LeanderReimer, CTO @QAware). == Dokument bitte herunterladen, falls unscharf! Please download slides if blurred! == Continuous Delivery ist allgegenwärtig. Wirklich? Viele Teams straucheln immer noch dabei, regelmäßig gut getestete und vor allem sichere Software auszuliefern. Immer mit der gleichen, guten alten Ausrede: die nicht-funktionalen Tests seien zu aufwändig und zu teuer umzusetzen. Doch genau das Gegenteil ist der Fall! In diesem Vortrag gehen wir kurz auf die aktuellen Bedrohungen und die Bedeutung früher und regelmäßiger Sicherheitstests von APIs ein. Anschließend zeigen wir, wie einfach es ist, diese Tests kontinuierlich und asynchron mit OWASP ZAP und Testkube gegen REST- und GraphQL-APIs direkt auf einem Kubernetes-Cluster auszuführen; immer dann wenn sich die API und der Service ändern.

Kontinuierliche Sicherheitstests für APIs mit Testkube und OWASP ZAP

QAware GmbH

Cloud Native Night, Mainz, September 2023, Markus Zimmermann === Please download slides if blurred! === The topic of service mesh is still present at every major DevOps conference and is the subject of controversial discussions. A service mesh comes with the promise of implementing cross-functional requirements of microservices such as observability or secure communication without changes within the services. The operational effort and the integration of the services within the service mesh should also be problem-free. But do the common service mesh implementations keep these promises? In a client project we have gained experience with Linkerd and can say: we did not achieve the benefits without pain. We want to share these experiences and what you can take away for your next project!

Service Mesh Pain & Gain. Experiences from a client project.

QAware GmbH

WeAreDevelopers World Congress 2023, July 2023, Mario-Leander Reimer === Please download slides if blurred! === Elasticity and unlimited scalability are the holy grail for any cloud-native application. Now you might think: “That’s easy!!! I just run my containers on a Kubernetes cluster and I am done.” But is it really that simple? Turns out it’s not! Your application as well as your cloud infrastructure and K8s cluster need to address and support these non-functional requirements. This session will have a detailed and also practical look at the different ways of autoscaling in Kubernetes. We will give an overview of the technical foundations and prerequisites, and then showcase several frameworks and technologies that can be used to flexibly autoscale your cluster and your cloud-native workloads.

50 Shades of K8s Autoscaling

QAware GmbH

Kubernetes Community Days Munich 2023, Juli 2023, Mario-Leander Reimer The cloud already has a larger CO2 footprint than the worldwide aviation industry. With increasing digitalization and cloudification this trend will continue if we don't do anything about it. Many Kubernetes installations are greatly oversized in terms of the resources actually required and thus contribute unnecessarily to global warming. What is the energy balance of your cluster and its workloads? In this session we will discuss approaches and technologies that help to make K8s clusters green(er). First of all, transparency is needed: what is the energy balance of the cluster and its workloads? Only then we can start to optimize for better energy efficiency. And it's not that difficult, so let's get started!

Blue turns green! Approaches and technologies for sustainable K8s clusters.

QAware GmbH

Mastering Kubernetes 2023, Juli 2023, Sonja Wegner Gute APIs sind das Herzstück erfolgreicher digitaler Produkte und Cloud-nativer Anwendungen. Doch schlecht verwaltete APIs werden schnell zum Albtraum. Damit es kein böses Erwachen gibt, setzen wir auf API Gateways: Diese sind etabliert und bekannt und helfen uns bei der Verwaltung der APIs. Sie regeln unter anderem Traffic Management, Rollout-Szenarien, Versionierung, Zugriffskontrolle und Diagnostizierbarkeit. In diesem Vortrag werden wir das Cloud-native API-Gateway-Ökosystem näher betrachten: Gloo, KrakenD, Kong, Envoy et al. Aber welches davon ist das Richtige für den Einsatz im nächsten Projekt? Lasst es uns herausfinden!

Per Anhalter zu Cloud Nativen API Gateways

QAware GmbH

Mastering Kubernetes 2023, Juli 2023, Mario-Leander Reimer Die Cloud hat bereits heute einen größeren CO2-Fußabdruck als die Luftfahrtindustrie, mit steigender Digitalisierung und Cloudifizierung wird sich dieser Trend fortsetzen, wenn wir nichts dagegen unternehmen. Viele Kubernetes-basierte Installationen sind gemessen am eigentlich benötigten Ressourcen Bedarf stark überdimensioniert und tragen so unnötig zur globalen Erwärmung bei. Wie sieht die Energiebilanz Ihres Clusters und Workloads aus? In diesem Vortrag zeigen wir Ansätze und Technologien, die dabei helfen K8s-Cluster grün(er) zu machen. Zunächst braucht es Transparenz: Wie sieht die Energiebilanz des Clusters und seiner Workloads aus? Erst danach lassen sich diese gezielt auf ihre Energiesparsamkeit hin optimieren. Und das ist gar nicht so schwer, also packen wir es an!

Aus blau wird grün! Ansätze und Technologien für nachhaltige Kubernetes-Cluster

QAware GmbH

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Cloud Migration mit KI: der Turbo

Migration von stark regulierten Anwendungen in die Cloud: Dem Teufel die See...

Aus blau wird grün! Ansätze und Technologien für nachhaltige Kubernetes-Cluster

Endlich gute API Tests. Boldly Testing APIs Where No One Has Tested Before.

Kubernetes with Cilium in AWS - Experience Report!

50 Shades of K8s Autoscaling

Kontinuierliche Sicherheitstests für APIs mit Testkube und OWASP ZAP

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50 Shades of K8s Autoscaling

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Building Real-Time Pipelines With FLaNK Timothy Spann, Principal Developer Advocate, Streaming - Cloudera Future of Data meetup, startup grind, AI Camp The combination of Apache Flink, Apache NiFi, and Apache Kafka for building real-time data processing pipelines is extremely powerful, as demonstrated by this case study using the FLaNK-MTA project. The project leverages these technologies to process and analyze real-time data from the New York City Metropolitan Transportation Authority (MTA). FLaNK-MTA demonstrates how to efficiently collect, transform, and analyze high-volume data streams, enabling timely insights and decision-making. Apache NiFi Apache Kafka Apache Flink Apache Iceberg LLM Generative AI Slack Postgresql

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Spring Cloud Apps with Kubernetes

1. Spring Cloud Apps with Kubernetes M.-Leander Reimer (@LeanderReimer) & Josef Fuchshuber (@fuchshuber)

2. SPRING CLOUD APPS WITH KUBERNETES THE ZWITSCHER SHOW CASE KUBERNETES HTTPS://GITHUB.COM/QAWARE/CLOUD-NATIVE-ZWITSCHER

3. SPRING CLOUD APPS WITH KUBERNETES RUN KUBERNETES ON LOCAL MACHINE OR ON TURN-KEY CLOUD SOLUTIONS export KUBERNETES_PROVIDER=vagrant export NUM_NODES=1 curl -sS https://get.k8s.io | bash export KUBERNETES_PROVIDER=aws export KUBE_AWS_ZONE=eu-central-1a export NODE_SIZE=t2.small curl -sS https://get.k8s.io | bash export KUBE_GCE_ZONE=europe-west1-d export NUM_NODES=4 curl -sS https://get.k8s.io | bash

4. SPRING CLOUD APPS WITH KUBERNETES INFRASTRUCTURE AS CODE IST DAS DEVOPS-ESPERANTO

5. SPRING CLOUD APPS WITH KUBERNETES DOCKERIZE IT ZWITSCHER-BOARD ZWITSCHER-CONFIG ZWITSCHER-EDGE ZWITSCHER-EUREKA ZWITSCHER-MONITOR ZWITSCHER-SERVICE DEBIAN8-JRE8 DEBIAN:8

6. POD DeploymentPOD Deployment POD Deployment SPRING CLOUD APPS WITH KUBERNETES KUBERNETIZE IT ZWITSCHER-BOARD ZWITSCHER-CONFIG ZWITSCHER-EDGE ZWITSCHER-EUREKA ZWITSCHER-MONITORZWITSCHER-SERVICE POD Deployment POD Deployment POD Deployment SERVICE SERVICE SERVICE SERVICE SERVICE SERVICE

7. SPRING CLOUD APPS WITH KUBERNETES K8S DEPLOYMENT DESCRIPTOR EXAMPLE apiVersion: extensions/v1beta1 kind: Deployment metadata: name: zwitscher-service spec: replicas: 1 template: metadata: labels: zwitscher: service spec: containers: - name: zwitscher-service image: "qaware-oss-docker-registry.bintray.io/zwitscher/zwitscher-service" resources: requests: memory: "256Mi" cpu: "250m" limits: memory: "512Mi" cpu: "500m" ports: - containerPort: 8080 livenessProbe: httpGet: path: /admin/health port: 8080 initialDelaySeconds: 90 timeoutSeconds: 5 env: - name: EUREKA_HOST value: zwitscher-eureka 1 Docker Container Health Checks Resource Limits

8. SPRING CLOUD APPS WITH KUBERNETES K8S SERVICE DESCRIPTOR EXAMPLE apiVersion: v1 kind: Service metadata: name: zwitscher-service labels: zwitscher: service spec: # if your cluster supports it, uncomment the following to automatically create # an external load-balanced IP for the frontend service. Do not use locally. # type: LoadBalancer # sessionAffinity: ClientIP ports: - port: 8080 selector: zwitscher: service

9. SPRING CLOUD APPS WITH KUBERNETES KUBERNETES DEPLOYMENT VISUALIZATION USING A NOVATION LAUNCHPAD Kubernetes Deployment Running Pods Selected Deployment Up/Down & Scale Click to Start/Stop

10. DEMO TIME

11. SPRING CLOUD APPS WITH KUBERNETES ALTERNATIVE: ZWITSCHERN WITH NATIVE K8S INFRASTRUCTURE ZWITSCHER-BOARD EDGE-SERVER: SERVICES & INGRES ZWITSCHER-MONITORZWITSCHER-SERVICE POD Deployment POD Deployment POD Deployment SERVICE SERVICE SERVICE CONFIGURATION & COORDINATION: ETCDDISCOVERY: DNS

12. TWITTER.COM/QAWARE - SLIDESHARE.NET/QAWARE

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