Deploying NGINX in EKS - Lab Summary¶

• Deploy a NGINX ReplicaSet into your EKS cluster and confirm the discovery of your NGINX deployment.
• Run a load test to create metrics and confirm them streaming into Splunk Observability Cloud!

1. Start your NGINX¶

Verify the number of pods running in the Splunk UI by selecting the WORKLOADS tab. This should give you an overview of the workloads on your cluster.

Note the single agent container running per node among the default Kubernetes pods. This single container will monitor all the pods and services being deployed on this node!

Now switch back to the default cluster node view by selecting the MAP tab and select your cluster again.

In the Multipass or AWS/EC2 shell session and change into the nginx directory:

cd ~/workshop/k8s/nginx

2. Create NGINX deployment¶

Create the NGINX configmap¹ using the nginx.conf file:

kubectl create configmap nginxconfig --from-file=nginx.conf

configmap/nginxconfig created

Then create the deployment:

kubectl create -f nginx-deployment.yaml

deployment.apps/nginx created
service/nginx created

Next we will confirm that NGINX is running as Kubernetes service

kubectl get svc

Validate the deployment has been successful. NGINX will be assigned an external IP. It will take a few minutes for the Elastic Load Balancer to be available. Grab the External-IP of NGINX service and visit the page using browser on your computer.

If you have the Splunk UI open you should see new Pods being started and containers being deployed.

It should only take around 20 seconds for the pods to transition into a Running state. In the Splunk UI you will have a cluster that looks like below:

If you select the WORKLOADS tab again you will now see that there is a new ReplicaSet and a deployment added for NGINX:

Let's validate this in your shell as well:

kubectl get pods

NAME                                                          READY   STATUS    RESTARTS   AGE
splunk-otel-collector-k8s-cluster-receiver-77784c659c-ttmpk   1/1     Running   0          9m19s
splunk-otel-collector-agent-249rd                             1/1     Running   0          9m19s
svclb-nginx-vtnzg                                             1/1     Running   0          5m57s
nginx-7b95fb6b6b-7sb9x                                        1/1     Running   0          5m57s
nginx-7b95fb6b6b-lnzsq                                        1/1     Running   0          5m57s
nginx-7b95fb6b6b-hlx27                                        1/1     Running   0          5m57s
nginx-7b95fb6b6b-zwns9                                        1/1     Running   0          5m57s

Validate you are seeing metrics in the UI by going to hamburger icon, top let and select Dashboards → NGINX → NGINX Servers. Using the Overrides filter on k8s.cluster.name:, find the name of your cluster as returned by echo $(hostname)-eks-cluster in the terminal.