Is it Observable

Episode : Fluentbit vs OpenTelemetry Collector

This repository contains the files utilized during the tutorial presented in the dedicated IsItObservable episode comparing fluentbit and the OpenTelemetry Collector.

this tutorial will also utilize the OpenTelemetry Operator with:

• the OpenTelemetry Demo
• the hipster-shop
• istio All the observability data generated by the environment would be sent to Dynatrace.

Prerequisite

The following tools need to be install on your machine :

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

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}

2.Create a GKE cluster

ZONE=europe-west3-a
NAME=isitobservable-fluentbitcollectorbench
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 to create 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 to have 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 k8S 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 k8S secret

DATA_INGEST_TOKEN=<YOUR TOKEN VALUE>

Istio

1. Download Istioctl

curl -L https://istio.io/downloadIstio | sh -

This command download the latest version of istio ( in our case istio 1.18.2) compatible with our operating system. 2. Add istioctl to you PATH

cd istio-1.20.1

this directory contains samples with addons . We will refer to it later.

export PATH=$PWD/bin:$PATH

4.Clone Github repo

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

To run this benchmark and be able to compare fluentbit with the Collector. I would recommend to :

• create a cluster with one of the 2 solutions
• run the various tests
• destroy the cluster
• do the same with the other solution

Fluentbit

0.Deploy most of the components for Fluentbit

The application will deploy the entire environment:

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

1. Enable remote write on Prometheus

To let fluentbit send the metrics to Prometheus, we need to enalbe the remote write feature on our Prometheus server To achieve that we need to edit the CRD Prometheus holding the settings of Prometheus and add :

enableRemoteWriteReceiver: true

edit the Prometheus CRD with the following command:

 kubectl edit prometheus prometheus-kube-prometheus-prometheus

2. Run the test collecting logs

kubectl apply -f fluentbit/fluentbitsvc.yaml -n fluentbit
kubectl delete -f fluentbit/fluent.yaml -n fluentbit
kubectl apply -f fluentbit/pipeline/step1-logs/fluentbit.yaml -n fluentbit
kubectl apply -f fluentbit/fluent.yaml -n fluentbit

3. Run the test collecting logs and traces

kubectl delete -f fluentbit/fluent.yaml -n fluentbit
kubectl apply -f fluentbit/pipeline/step2-logs-otlp/fluentbit.yaml -n fluentbit
kubectl apply -f fluentbit/fluent.yaml -n fluentbit

4. Run the test collecting logs, traces and metrics

kubectl delete -f fluentbit/fluent.yaml -n fluentbit
kubectl apply -f fluentbit/pipeline/step3-logs-otlp-prometheus/fluentbit.yaml -n fluentbit
kubectl apply -f fluentbit/fluent.yaml -n fluentbit

If you are

Deploy most of the components for The collector

The application will deploy the entire environment:

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

A. with processing at the receiver level

1. Run the test collecting logs

kubectl apply -f opentelemetry/collector processing after receiving/step1-logs/openTelemetry-manifest_debut.yaml

2. Run the test collecting logs and traces

kubectl apply -f opentelemetry/collector processing after receiving//step2-logs-otlp/openTelemetry-manifest_debut.yaml

3. Run the test collecting logs, traces and metrics

kubectl apply -f opentelemetry/collector processing after receiving/step3-logs-otlp-prometheus/openTelemetry-manifest_debut.yaml

B. with processing at the processor level

1. Run the test collecting logs

kubectl apply -f opentelemetry/collector processing at the receiver/step1-logs/openTelemetry-manifest_debut.yaml

2. Run the test collecting logs and traces

kubectl apply -f opentelemetry/collector processing at the receiver/step1-logs/openTelemetry-manifest_debut.yaml

3. Run the test collecting logs, traces and metrics

kubectl apply -f opentelemetry/collector processing at the receiver/step1-logs/openTelemetry-manifest_debut.yaml

C. using the targetAllocator for metrics

Create a Collector with the target Allocator

kubectl apply -f istio/podmonitor.yaml
kubectl apply -f kepler/serviceMonitor.yaml -n kepler
kubectl apply -f  opentelemetry/targetallocator/openTelemetry-manifest_debut.yaml
kubectl apply -f opentelemetry/targetallocator/openTelemetry-manifest_statefulset.yaml