imixs-cloud
How to Monitor Imixs-Cloud
To get better insights of your Imixs-Cloud project you can install a monitoring service. Kubernetes provides several ways to collect and monitor cluster metrics like the memory or CPU usage of cluster nodes or pods. Kubernetes makes these data available through the Metrics API. These metrics can be accessed either directly by the user with the kubectl top command, or by a controller in the cluster, for example Horizontal Pod Autoscaler, to make decisions.
The Imixs-Cloud monitoring provides different setups to install a monitoring solution.
- metrics-server is a scalable, efficient source of container resource metrics for Kubernetes built-in autoscaling pipelines.
- imixs-prometheus is the recommended monitoring dashboard for Imixs-Cloud
- kube-prometheus provides a configuration setup for a complete cluster monitoring stack based on the Prometheus Operator project.
After the metrics server was installed you can monitor your Kubernetes cluster from the commandline tool kubectl top:
$ kubectl top nodes
NAME CPU(cores) CPU% MEMORY(bytes) MEMORY%
master-1 297m 14% 1358Mi 36%
worker-1 1424m 35% 13913Mi 89%
worker-2 1258m 31% 11278Mi 72%
worker-3 1133m 28% 9956Mi 63%
You can also get the data of a singel POD:
$ kubectl top pod traefik-797d34bc7d-l7k8j -n kube-system
NAME CPU(cores) MEMORY(bytes)
traefik-797d34bc7d-l7k8j 22m 50Mi
The k9s tool provides the core functionality to display metrics of the cluster and for each namespace. With the :pulse view you can see node dashboard.
Prometheus
Prometheus is an open-source systems monitoring and alerting toolkit. The Prometheus service is the database used for collecting the metric data. The Prometheus server is typically only used internal to grab data from the metric api and not accessible from outside of your cluster. The internal address for data access is:
http://prometheus:9090
Grafana
The Grafana service is the front-end application used to visualize the data collected by Prometheus. The grafana service provides a web interface with rich functionality for monitoring and alerting.
To access grafana you need ot setup a Ingress route. See the Deployment Guide for details.
For further details see the install guides for the metrics-server and imixs-prometheus.