BanzaiCloud Logging Operator in Kubernetes Simplified in 5 minutes.

How to Configure BanzaiCloud Logging Operator in Kubernetes In Less Than 5 minutes (Photo by Markus Spiske on Unsplash)

In the previous article, we described what capability BanzaiCloud Logging Operator provides and its main features. So, today we are going to see how we can implement it.

The first thing we need to do is to install the operator itself, and to do that, we have a helm chart at our disposal, so the only thing that we will need to do are the following commands:

helm repo add banzaicloud-stable https://kubernetes-charts.banzaicloud.com
helm upgrade --install --wait --create-namespace --namespace logging logging-operator banzaicloud-stable/logging-operator

That will create a logging namespace (in case you didn’t have it yet), and it will deploy the operator components itself, as you can see in the picture below:

So, now we can start creating the resources we need using the CRD that we commented on in the previous article but to do a recap. These are the ones that we have at our disposal:

• logging — The logging resource defines the logging infrastructure for your cluster that collects and transports your log messages. It also contains configurations for Fluentd and Fluent-bit.
• output / clusteroutput — Defines an Output for a logging flow, where the log messages are sent. output will be namespaced based, and clusteroutput will be cluster based.
• flow / clusterflow — Defines a logging flow using filters and outputs. The flow routes the selected log messages to the specified outputs. flow will be namespaced based, and clusterflows will be cluster based.

So, first of all, we are going to define our scenario. I don’t want to make something complex; I wish that all the logs that my workloads generate, no matter what namespace they are in, are sent to a Grafana Loki instance that I have also installed on that Kubernetes Cluster on a specific endpoint using the Simple Scalable configuration for Grafana Loki.

So, let’s start with the components that we need. First, we need a Logging object to define my Logging infrastructure, and I will create it with the following command.

kubectl -n logging apply -f - <<"EOF"
apiVersion: logging.banzaicloud.io/v1beta1
kind: Logging
metadata:
  name…