Quarkus App for Polls

Launch on OpenShift

Images are downloaded from docker hub

Images:

• Postgres (image debezium/postgres) on port 5432
• AMQ Streams (Zookeeper on port 2181 and Kafka on port 9092)
• Voting Service on port 8080

In order to create the demo on your openshift environment, you need:

• ocp user with cluster-admin role
• oc client installed on your machine
• AMQ Streams 1.x for ocp downloaded from Red Hat
  https://access.redhat.com/jbossnetwork/restricted/listSoftware.html?downloadType=distributions&product=jboss.amq.streams

Follow these instructions to create the demo:

Login to ocp, create a new project, create e new service account runasanyuid (postgres must run as root):

oc login <ocp_master_url> --token=<ocp_user_token>
oc new-project quarkus-voting
oc create serviceaccount runasanyuid
oc adm policy add-scc-to-user anyuid -z runasanyuid -n quarkus-voting

Create postgres, then create voting database:

oc new-app debezium/postgres
oc patch dc/postgres --patch '{"spec":{"template":{"spec":{"serviceAccountName": "runasanyuid"}}}}'
oc exec $(oc get pods | grep postgres | cut -d " " -f1) -- bash -c 'psql -h localhost -p 5432 -U postgres -c "CREATE DATABASE voting;"'

Install AMQ Streams on OpenShift 3.11

Install AMQ Streams cluster operator and a kafka cluster with 3 brokers (ephemeral and with prometheus metrics).
This step requires that you've downloaded and unpacked the AMQ Streams zip archive for ocp
(for more info about the installation, https://access.redhat.com/documentation/en-us/red_hat_amq/7.2/html-single/using_amq_streams_on_openshift_container_platform/index)

#replace the template namespace with quarkus-voting
sed -i 's/namespace: .*/namespace: quarkus-voting/' install/cluster-operator/*RoleBinding*.yaml
oc apply -f install/cluster-operator/020-RoleBinding-strimzi-cluster-operator.yaml -n quarkus-voting
oc apply -f install/cluster-operator/031-RoleBinding-strimzi-cluster-operator-entity-operator-delegation.yaml -n quarkus-voting
oc apply -f install/cluster-operator/032-RoleBinding-strimzi-cluster-operator-topic-operator-delegation.yaml -n quarkus-voting
oc apply -f install/cluster-operator -n quarkus-voting
oc apply -f examples/metrics/kafka-metrics.yaml

Install AMQ Streams on OpenShift 4.x

a) In the OpenShift 4 web console, click Operators > OperatorHub.
b) Search or browse for the AMQ Streams Operator, in the Streaming & Messaging category.
c) Click the AMQ Streams tile and then, in the sidebar on the right, click Install.
d) On the Create Operator Subscription screen, choose from the following installation and update options:
Installation Mode: Choose to install the AMQ Streams Operator to a specific (project) namespace
e) Click Subscribe; the AMQ Streams Operator is installed to your OpenShift cluster.

Verify that the amq-streams-cluster-operator is Running:

oc get pods
NAME                                                   READY     STATUS    RESTARTS   AGE
amq-streams-cluster-operator-v1.4.0-55f4b48cc6-mhckl   1/1       Running   0          56s

Then apply the kafka CRD:

oc apply -f examples/metrics/kafka-metrics.yaml

Install voting microservice

cd voting/
./mvnw clean package -Dquarkus.container-image.build=true -Dquarkus.kubernetes.deploy=true

Install prometheus and grafana

wget https://raw.githubusercontent.com/strimzi/strimzi-kafka-operator/0.10.0/metrics/examples/prometheus/kubernetes.yaml
mv kubernetes.yaml prometheus.yaml
oc apply -f prometheus.yaml -n quarkus-voting
oc adm policy add-cluster-role-to-user prometheus -z prometheus-server
wget https://raw.githubusercontent.com/strimzi/strimzi-kafka-operator/0.10.0/metrics/examples/grafana/kubernetes.yaml
mv kubernetes.yaml grafana.yaml
oc apply -f grafana.yaml -n quarkus-voting
oc expose svc/grafana

Download and import grafana dashboard for kafka and zookeeper, dashboard can be downloaded at:
wget https://raw.githubusercontent.com/strimzi/strimzi-kafka-operator/master/metrics/examples/grafana/strimzi-kafka.json
wget https://raw.githubusercontent.com/strimzi/strimzi-kafka-operator/master/metrics/examples/grafana/strimzi-zookeeper.json

Follow the instruction to import the kafka and zookeeper grafana dashboards:
https://strimzi.io/docs/latest/#grafana_dashboard

Import the custom grafana dashboard for showing poll results:

grafana/grafana-unconference.json

Results will be available at:

http://<your-host>/poll/results

and on a grafana dashboard

Launch on local env - linux and mac

Launch the bootstrap script to create the docker containers.
Images are downloaded from docker hub.

Images:

• Postgres (image debezium/postgres) on local port 5432
• Zookeeper (image debezium/zookeeper) on local port 2181
• Kafka (image debezium/kafka) on local port 9092
• Jaeger (image jaegertracing/all-in-one) on local port 16686

If you want to run the voting application in dev mode use the script:

./scripts/deploy-docker-no-voting.sh

and then run the voting application with:

cd voting/
./mvnw clean compile quarkus:dev (debug port 5005)

To test the application run:

cd voting/
mvn clean compile test

Endpoints

Test them with swagger, available at:

http://<your-host>/swagger-ui
http://<your-host>/openapi

Jaeger

See tracing at:

http://<your-host>:16686

Compile and Create Images

Launch the script to compile and create the native images:

./scripts/build-native-image.sh