12/15/2023 0 Comments Node exporter prometheus kubernetes![]() ![]() We will expose node-exporter on all kubernetes node IP’s on port 9100. To access the Node exporter dashboard over a IP or a DNS name, you need to expose it as a Kubernetes service.Ĭreate a file named service.yaml and copy the following contents. In our case this url can be use as the endpoint for the node-exporter: .local:9100 Exposing Node Exporter as a Service The URL of service is in the below format. ![]() Adding an Ingress object if you have an Ingress controller deployed.Įvery kubernetes service can be accessed internally using the service url.Exposing the node-exporter deployment as a service with NodePort or a Load Balancer.Accessing using the service endpoint if prometheus and node-exporter is running in same cluster.In our kubernetes set up, we can achieve this in one of these options: Once set up is done and node-exporter is exporting the metrics, Prometheus needs to access the /metrics endpoint so it can scrape. Kubectl get pods -namespace=node-exporter Connecting To Node Exporter kubectl get daemonset -namespace=node-exporter You can check the created daemonset using the following command. devices=^(veth.*)$Ĭreate a deployment on node-exporter namespace using the above file. apiVersion: apps/v1Īpp.kubernetes.io/component: node-exporter Save the following content to deployment.yaml. Deleting a DaemonSet will clean up the Pods it created. As nodes are removed from the cluster, those Pods are garbage collected. As nodes are added to the cluster, Pods are added to them. ![]() In this situation, a Kubernetes Daemonset fits this.Ī DaemonSet ensures that all (or some) Nodes run a copy of a Pod. Since we will be collecting metrics in each node in our cluster, we will need to have the node-exporter set up in each of the node. kubectl apply -f namespace.yaml Create a node-exporter Daemonset Then execute the following command to create a new namespace named node-exporter. Let us create a namespace for our gatus resources. StorageClass, Nodes, PersistentVolumes, etc). Deployments, Services, etc) and not for cluster-wide objects (e.g. Namespace-based scoping is applicable only for namespaced objects (e.g. Names of resources need to be unique within a namespace, but not across namespaces. In Kubernetes, a namespace provides a mechanism for isolating groups of resources within a single cluster. Once you have the prerequisites in place, we can create kubernetes resource manifests.
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