Agent Installation via Kubernetes DaemonSets

An alternative to running the CostGraph operator is to run the CostGraph agent as a DaemonSet. This is useful if you want to monitor all nodes in your Kubernetes cluster.

Prerequisites

• API Key: Obtain an API key from the CostGraph dashboard.

Installation Steps

1. Create Configuration

   Using ConfigMap, store the configuration for the CostGraph agent

   cat <<EOF | kubectl apply -f -
   apiVersion: v1
   kind: ConfigMap
   metadata:
     name: costgraph-agent-config
     namespace: costgraph-system
   data:
     conf.yaml: |
       api_key: "your costgraph api key"
       prometheus:
         enabled: true
         url: "prometheus.example.com"
         write_path: "/api/v1/write"
         timeout: 10s
         interval: 60s
         tlsInsecure: false
         labels:
           env: "daemonset"
       expected_utilisation:
         cpu: 60
         memory: 75
   EOF
   

2. Deploy DaemonSet

   Apply the DaemonSet manifest to your cluster.

   cat <<EOF | kubectl apply -f -
   apiVersion: apps/v1
   kind: DaemonSet
   metadata:
     name: costgraph-agent
     namespace: costgraph-system
   spec:
     selector:
       matchLabels:
         app: costgraph-agent
     template:
       metadata:
         labels:
           app: costgraph-agent
       spec:
         hostPID: true
         hostNetwork: true
         containers:
         - name: agent
           image: ghcr.io/baselinehq/costgraph-agent:v0.0.7
           command: ["costgraph-agent", "-conf", "/etc/costgraph-agent/conf.yaml"]
           imagePullPolicy: Always
           env:
           - name: DEBUG
             value: "true"
           volumeMounts:
           - name: state
             mountPath: /var/lib/costgraph-agent
           - name: proc
             mountPath: /host/proc
             readOnly: true
           - name: config
             mountPath: /etc/costgraph-agent/conf.yaml
             subPath: conf.yaml
             readOnly: true
         volumes:
         - name: state
           emptyDir: {}
         - name: proc
           hostPath:
             path: /proc
         - name: config
           configMap:
             name: costgraph-agent-config
   EOF
   

3. Verify Installation

   Check that the agent pods are running on all nodes.

   kubectl get pods -n costgraph
   kubectl logs -n costgraph -l app=costgraph-agent