micrometering-with-quarkus project

Full details about this project can be found here: https://dzone.com/articles/extra-micrometer-practices-with-quarkus

This project uses Quarkus, the Supersonic Subatomic Java Framework.

If you want to learn more about Quarkus, please visit its website: https://quarkus.io/ .

Running the application in dev mode

You can run your application in dev mode that enables live coding using:

./mvnw compile quarkus:dev

Packaging and running the application

The application can be packaged using:

./mvnw package

It produces the micrometering-with-quarkus-1.0.0-SNAPSHOT-runner.jar file in the /target directory. Be aware that it’s not an über-jar as the dependencies are copied into the target/lib directory.

If you want to build an über-jar, execute the following command:

./mvnw package -Dquarkus.package.type=uber-jar

The application is now runnable using java -jar target/micrometering-with-quarkus-1.0.0-SNAPSHOT-runner.jar.

Setup Prometheus on Red Hat OpenShift Developer Sandbox

Once you have your Red Hat account, you can obtain free of charge a Sandbox by going to: https://developers.redhat.com/developer-sandbox/get-started. For development purposes only, you can setup Prometheus by following the steps below:

• Make sure you are in Developer view.
• Click on +Add and select the Container Images card.
• Fill in the image name with openshift/prometheus and leave the other default values.
• Click on Create button.
• Next, open the web terminal by pressing the icon >_ located in the upper right corner.
• Type the following commands there:

curl https://raw.githubusercontent.com/ammbra/micrometering-with-quarkus/feature/techflow-code/kubefiles/prometheus.yaml -o prometheus.yaml

oc create cm prometheus-config --from-file=prometheus.yaml

oc set volume deployment/prometheus --add --name=prometheus-config --type=configmap --configmap-name=prometheus-config --mount-path=/etc/prometheus/

kubectl patch deployment prometheus \
--type=json \
-p='[{"op": "add", "path": "/spec/template/spec/containers/0/args/-", "value": "--config.file=/etc/prometheus/prometheus.yaml"}]'

oc expose svc prometheus

Setup Grafana on Red Hat OpenShift Developer Sandbox

For development purposes only, you can setup Grafana by following the steps below:

• Make sure you are in Developer view.
• Click on +Add and select the Container Images card.
• Fill in the image name with grafana/grafana:6.0.1 and leave the other default values.
• Click on Create button.
• Next, open the web terminal by pressing the icon >_ located in the upper right corner.
• Type the following commands in the web terminal to get an external url where you can access Grafana:

oc expose svc grafana

• Once you have the external URL to Grafana, open it in a browser tab and use the admin/admin default Grafana credentials.
• You can change the password used by admin after your first login.
• Next, add Prometheus as datasource in your Grafana by following the UI steps. You can use the URL of the route to Prometheus for an easier connection.

• Next, you can import the experimental dashboard used in the demos by loading [Micrometer Sample.json](Micrometer Sample.json) via Upload .json file.