Installing Grafana Agent Operator
In this guide you’ll learn how to deploy the Grafana Agent Operator into your Kubernetes cluster. This guide does not use Helm. To learn how to deploy Agent Operator using the grafana-agent-operator Helm chart, please see Installing Grafana Agent Operator with Helm.
Note: Agent Operator is currently in beta and its custom resources are subject to change as the project evolves. It currently supports the metrics and logs subsystems of Grafana Agent. Integrations and traces support is coming soon.
By the end of this guide, you’ll have deloyed Agent Operator into your cluster.
Before you begin, make sure that you have the following available to you:
- A Kubernetes cluster
kubectlcommand-line client installed and configured on your machine
Step 1: Deploy CustomResourceDefinitions
Before you can write custom resources to describe a Grafana Agent deployment, you must deploy the CustomResourceDefinitions to the cluster first. These definitions describe the schema that the custom resources will conform to. This is also required for the operator to run; it will fail if it can’t find the custom resource definitions of objects it is looking to use.
The current set of CustomResourceDefinitions can be found in production/operator/crds. Apply them from the root of this repository using:
kubectl apply -f production/operator/crds
This step must be done before installing the Operator, as the Operator will fail to start if the CRDs do not exist.
Find information on the supported values for the CustomResourceDefinitions
Once you’ve deployed the CustomResourceDefinitions
to your Kubernetes cluster, use
kubectl explain <resource> to get access to
the documentation for each resource. For example,
kubectl explain GrafanaAgent
will describe the GrafanaAgent CRD, and
kubectl explain GrafanaAgent.spec will
give you information on its spec field.
Step 2: Install Agent Operator
Use the following deployment to run the Operator, changing values as desired:
apiVersion: apps/v1 kind: Deployment metadata: name: grafana-agent-operator namespace: default labels: app: grafana-agent-operator spec: replicas: 1 selector: matchLabels: app: grafana-agent-operator template: metadata: labels: app: grafana-agent-operator spec: serviceAccountName: grafana-agent-operator containers: - name: operator image: grafana/agent-operator:v0.25.1 args: - --kubelet-service=default/kubelet --- apiVersion: v1 kind: ServiceAccount metadata: name: grafana-agent-operator namespace: default --- apiVersion: rbac.authorization.k8s.io/v1 kind: ClusterRole metadata: name: grafana-agent-operator rules: - apiGroups: [monitoring.grafana.com] resources: - grafanaagents - metricsinstances - logsinstances - podlogs - integrations verbs: [get, list, watch] - apiGroups: [monitoring.coreos.com] resources: - podmonitors - probes - servicemonitors verbs: [get, list, watch] - apiGroups: [""] resources: - namespaces - nodes verbs: [get, list, watch] - apiGroups: [""] resources: - secrets - services - configmaps - endpoints verbs: [get, list, watch, create, update, patch, delete] - apiGroups: ["apps"] resources: - statefulsets - daemonsets - deployments verbs: [get, list, watch, create, update, patch, delete] --- apiVersion: rbac.authorization.k8s.io/v1 kind: ClusterRoleBinding metadata: name: grafana-agent-operator roleRef: apiGroup: rbac.authorization.k8s.io kind: ClusterRole name: grafana-agent-operator subjects: - kind: ServiceAccount name: grafana-agent-operator namespace: default
Run Operator locally
Before running locally, make sure your kubectl context is correct! Running locally uses your current kubectl context, and you probably don’t want to accidentally deploy a new Grafana Agent to prod.
CRDs should be installed on the cluster prior to running locally. If you haven’t done this yet, follow deploying CustomResourceDefinitions first.
Afterwards, you can run the operator using
go run ./cmd/agent-operator
With Agent Operator up and running, you can move on to setting up a
GrafanaAgent custom resource. This will discover
LogsInstance custom resources and endow them with Pod attributes (like requests and limits) defined in the
GrafanaAgent spec. To learn how to do this, please see Custom Resource Quickstart.