Kubernetes solved many challenges with distributed environments, such as speed, scalability, and resilience. However, the flexibility and scalability that Kubernetes brings in deploying containerized applications also presents new challenges. Since there is no longer a 1-to-1 correlation between an application and the server it runs on, keeping track of the health of applications — abstracted by containers and once again by Kubernetes — can be daunting without the proper tools.
At DigitalOcean, we pride ourselves on offering straightforward and easy-to-use solutions. We have taken a similar approach to DigitalOcean Kubernetes monitoring. Find below the different approaches to setting up the observability stack on DigitalOcean Kubernetes.
DIY Observability stack which comprises of
Includes Prometheus, Grafana, AlertManager, and a solution for viewing logs, but it’s been designed as an all-in-one package optimized for Kubernetes.
In this article, we will focus on Robusta.
Robusta is an open-source Kubernetes monitoring, troubleshooting, and automation platform which comes pre-baked with
The main component of Robusta is the automation engine, which runs in a cluster as Kubernetes deployments.
robusta-forwarder: connects to the APIServer, monitors Kubernetes changes, and forwards them to robusta-runner.
robusta-runner: executes playbooks.
This step is needed to generate the values file for helm chart installation.
# Requires python installed python3 -m pip install -U robusta-cli --no-cache
generated_values.yaml for the Robusta chart:
# An interactive session where you can configure sinks # such as receiving alerts to a particular Slack channel, MS Teams. # This generates a `generated_values.yaml` robusta gen-config
Update DigitalOcean cluster credentials using
# Notice: Adding cluster credentials to kubeconfig file found in "/Users/<username>/.kube/config" # Notice: Setting current-context to <cluster-context> doctl kubernetes cluster kubeconfig save <cluster-id>
Install Robusta with
helm repo add robusta https://robusta-charts.storage.googleapis.com && helm repo update helm install robusta robusta/robusta -f ./generated_values.yaml --set clusterName=<cluster-name>
Upon successful installation, head to https://platform.robusta.dev/ and sign in with the email/account used during the installation process.
Here is an example view of the Robusta SaaS platform
Receive slack alerts to your private slack channel.
Additionally, you can use Grafana, which is part of the
kube-prom-stack to visualize and query your data.
# Expose the robusta-grafana service # log in with the credentials on localhost:3000 kubectl -n default port-forward svc/robusta-grafana 3000:80 # Open the browser and go to localhost:3000 to access Argo CD UI # Login with username: `admin,` password: `prom-operator`
By understanding what is happening and why, Kubernetes observability helps you better visualize, manage, and optimize the unpredictable, distributed nature of Kubernetes deployments. With seamless integration into the DigitalOcean Kubernetes clusters, Robusta provides a single pane of glass for your observability stack. Check out this real-world example and get started with your observability journey.