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Capturing Metrics from a Specific Namespace in AWS Container Insights

Capturing Metrics from a Specific Namespace in AWS Container Insights

How to capture metrics only from a specific namespace in AWS Container Insights for an EKS cluster

Adeleke Adebowale Julius
Published Mar 5, 2025
To capture metrics only from a specific namespace in AWS Container Insights for an EKS cluster, follow these steps:

1. Configure CloudWatch Agent to Filter Metrics by Namespace

The CloudWatch Agent collects metrics from all namespaces by default, but you can modify the agent’s configuration to include only specific namespaces.

Steps to achieve this:

1 Edit the CloudWatch Agent ConfigMap
  • Identify and edit the CloudWatch Agent ConfigMap (cwagent-config) in your cluster:
kubectl edit configmap cwagent-config -n amazon-cloudwatch
2 Modify the logs and metrics sections
  • Add the namespace filter under metrics_collected.prometheus:
{
"agent": {
"region": "your-region"
},
"logs": {
"metrics_collected": {
"prometheus": {
"cluster_name": "your-cluster",
"prometheus_config_path": "/etc/prometheusconfig/prometheus.yaml",
"ecs_service_discovery": {
"enable": true
},
"include_namespaces": [
"your-namespace"
]
}
}
}
}
3 Apply the updated ConfigMap
  • Save your changes and apply the updated configuration:
  • kubectl apply -f cwagent-config.yaml -n amazon-cloudwatch
4 Restart the CloudWatch Agent DaemonSet
  • Restart the DaemonSet to apply the new configuration:
kubectl rollout restart daemonset cloudwatch-agent -n amazon-cloudwatch

2. Verify Metrics Collection

After applying the changes, verify that metrics are only collected from the specific namespace:
kubectl logs -l app=cloudwatch-agent -n amazon-cloudwatch --tail=100
  • Check CloudWatch logs to ensure only the desired namespace's metrics are being reported.
 

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