Source: medium.com
Kubernetes Monitoring: Metrics ServerCategory: Kubernetes
Understanding the what, why, how & behind the scenes — Metrics-server. As the name suggests Metrics Server provides metrics for resource utilization like CPU & Memory. Metrics Server discovers all the nodes in the cluster and queries the kubelet which is an agent that runs on each node and further forwards the details for resource utilization i.e CPU/Memory to Kubernetes API Server which exposes it as a Metrics API endpoint.
Although the Metrics Server misses all the glitter and glamour compared the rest of Monitoring tools offer with visualization and dashboard, if you use features such as Horizontal Pod AutoScaler, Vertical Pod AutoScaler, kubectl top, or Kubernetes Dashboard then you do need the Metrics Server to provide resource utilization metrics for them.
Well in case if you do run into an issue where you are not able to scrape the metrics in that case, you can head over the issues tab for the metrics-server repository.
Although the Metrics Server misses all the glitter and glamour compared the rest of Monitoring tools offer with visualization and dashboard, if you use features such as Horizontal Pod AutoScaler, Vertical Pod AutoScaler, kubectl top, or Kubernetes Dashboard then you do need the Metrics Server to provide resource utilization metrics for them.
Well in case if you do run into an issue where you are not able to scrape the metrics in that case, you can head over the issues tab for the metrics-server repository.
Related Articles
Community Partners
DevOps Careers