Kubernetes Cluster Monitoring

Updated on Jul 4, 2025 2 min read monitoring

Monitoring is a critical aspect of operating a Kubernetes cluster, as it helps you ensure the health and performance of your applications and services. Monitoring involves collecting and analyzing data from various components of the cluster, including the API server, control plane, and individual apps and services.

To monitor the API server and control plane, it is important to keep track of key metrics such as CPU utilization, memory usage, network traffic, and the number of API requests. This information can be obtained through tools like Prometheus, which can scrape metrics from the Kubernetes API server and other components of the control plane. Additionally, monitoring solutions such as Grafana can help you visualize the collected metrics, making it easier to identify trends and anomalies.

To monitor individual apps and services, it’s important to have visibility into the health and performance of each pod and its containers. This information can be obtained through tools like liveness and readiness probes, which can monitor the status of pods and containers and take appropriate action when failures are detected. Additionally, tools like Nagios and Zabbix can help you monitor the overall health and performance of your applications and services, and alert you when issues arise.

In addition to monitoring individual components, it’s also important to have visibility into the overall state of your cluster. This can be achieved by using tools like Kubernetes Dashboard, which provides a graphical interface for monitoring the cluster and its components. Additionally, tools like Heapster can help you monitor the cluster’s resource utilization, including CPU, memory, and network usage.

Overall, monitoring is a critical aspect of operating a Kubernetes cluster and can help you ensure the health and performance of your applications and services. By having visibility into the API server, control plane, and individual apps and services, you can quickly identify and address any issues that may arise.