Tutorial: Monitor Kubernetes clusters with eBPF and Inspektor Gadget

This repository is here to guide you through the GitHub tutorial that goes hand-in-hand with a video available on YouTube and a detailed blog post on my website. Together, these resources are designed to give you a complete understanding of the topic.

Here are the links to the related assets:

• YouTube Video: eBPF Made Easy with Inspektor Gadget (No C Coding Needed!)

Feel free to explore the materials, star the repository, and follow along at your own pace.

This tutorial will also utilize the OpenTelemetry Operator with:

• The OpenTelemetry Demo
• kubezonnet
• tetragon
• OpenTelemetry profile All the observability data generated by the environment would be sent to Dynatrace.

Prerequisite

The following tools need to be installed on your machine :

• jq
• kubectl
• git
• gcloud ( if you are using GKE)
• Helm

GKE 1. Create a Google Cloud Platform Project

PROJECT_ID="<your-project-id>"
gcloud services enable container.googleapis.com --project ${PROJECT_ID}
gcloud services enable monitoring.googleapis.com \
cloudtrace.googleapis.com \
clouddebugger.googleapis.com \
cloudprofiler.googleapis.com \
--project ${PROJECT_ID}

GKE 2. Create a GKE cluster

ZONE=europe-west3-a
NAME=isitobservable-inspektorgadget
gcloud container clusters create ${NAME} --zone=${ZONE} --machine-type=e2-standard-4 --num-nodes=2

Getting started

Dynatrace Tenant

1. Dynatrace Tenant - start a trial

If you don't have any Dynatrace tenant, then I suggest creating a trial using the following link : Dynatrace Trial Once you have your Tenant, save the Dynatrace tenant URL in the variable DT_TENANT_URL (for example: https://dedededfrf.live.dynatrace.com)

DT_TENANT_URL=<YOUR TENANT Host>

2. Create the Dynatrace API Tokens

The Dynatrace operator will require several tokens:

• Token to deploy and configure the various components
• Token to ingest metrics and Traces

Operator Token

One for the operator having the following scope:

• Create ActiveGate tokens
• Read entities
• Read Settings
• Write Settings
• Access problem and event feed, metrics and topology
• Read configuration
• Write configuration
• Paas integration - installer downloader

Save the value of the token. We will use it later to store in a Kubernetes secret

API_TOKEN=<YOUR TOKEN VALUE>

Ingest data token

Create a Dynatrace token with the following scope:

• Ingest metrics (metrics.ingest)
• Ingest logs (logs.ingest)
• Ingest events (events.ingest)
• Ingest OpenTelemetry
• Read metrics

Save the value of the token. We will use it later to store in a Kubernetes secret

DATA_INGEST_TOKEN=<YOUR TOKEN VALUE>

4. Clone the GitHub repo

git clone https://github.com/isItObservable/inspektorgadget
cd inspektorgadget

5. Deploy most of the components

The application will deploy the entire environment:

chmod 777 deployment.sh
./deployment.sh  --clustername "${NAME}" --dturl "${DT_TENANT_URL}" --dtingesttoken "${DATA_INGEST_TOKEN}" --dtoperatortoken "${API_TOKEN}"