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Kubernetes metrics

AppSignal for Kubernetes extracts metrics from Kubernetes clusters.

After adding the AppSignal for Kubernetes deployment to your cluster, a Cluster Metrics section appears for your AppSignal application, displaying metrics for each node and each pod, as well as an overview of your cluster.

Installation

To start reporting Kubernetes cluster metrics to AppSignal:

  1. Store your AppSignal API key in a secret
  2. Add AppSignal deployment to your cluster

Store your AppSignal API key in a secret

Create a secret in your Kubernetes cluster containing your AppSignal app-specific push API key:

Shell
kubectl create secret generic appsignal --from-literal=api-key=<APPSIGNAL_API_KEY>

You can find your app-specific push API key in your application's settings.

Deploy to your cluster

Once you've created the AppSignal API key secret, add the AppSignal for Kubernetes deployment to your cluster:

Shell
kubectl apply -f https://raw.githubusercontent.com/appsignal/appsignal-kubernetes/main/deployment.yaml

This will create the appsignal namespace and deploy AppSignal for Kubernetes in that namespace.

Alternatively, install AppSignal for Kubernetes through its Helm chart:

Shell
helm repo add appsignal-kubernetes https://appsignal.github.io/appsignal-kubernetes
helm install appsignal-kubernetes appsignal-kubernetes/appsignal-kubernetes --create-namespace --namespace appsignal

Once configured, AppSignal for Kubernetes will start reporting metrics automatically.

Cluster Metrics

In AppSignal, the Host Metrics page will now be replaced with a Cluster Metrics page to show information about pods and nodes in your cluster. You will be able to see graphs representing useful metrics over time, such as:

  • CPU Usage: CPU usage stats per node or pod
  • Memory Usage: memory usage statistics, comparing the used memory to what's available per node or pod
  • Swap Usage: swap usage statistics, comparing the used swap to what's available per node or pod
  • Disk Usage: disk usage statistics, comparing the used disk space to what's available per node
  • Network usage: network usage, split by received and transmitted bytes, per node

Support

If you are experiencing any difficulties configuring your application's Kubernetes metrics, contact support, and we'll help you get your metrics flowing.