Fluentd multiline logging with Java (EFK stack)

The purpose

The goal of this example project is to demonstrate a basic EFK setup that supports multiline logs in a Kubernetes environment.

The example comes with a fully functioning EFK setup and an example Java, Spring Boot based application that produces multiline logs and exception stacktraces.

The relevant article can be found here: https://arnoldgalovics.com/java-and-spring-boot-multiline-log-support-for-fluentd-efk-stack/

Running the example

Build the docker image and the application

$ docker build -t fluentd-multiline-java:latest .

Side note, if you are building for a minikube environment, you can issue the eval $(minikube docker-env) command to build the image for the K8S registry.

The next thing is to deploy the application to Kubernetes

$ kubectl apply -f k8s/fluentd-multiline-java-deployment.yaml

Then deploy the EFK stack

$ kubectl apply -f k8s/efk-stack.yaml

In case of minikube, set up tunneling since Kibana is exposed via a LoadBalancer: minikube tunnel

Then access Kibana at the external IP of the LoadBalancer and the 5601 port.