4.11 - Cluster Monitoring

Objectives

• Describe Prometheus
• Describe Grafana

Monitoring

• TKG provides cluster monitoring services via the two projects:
• Prometheus:
  • A systems monitoring and alerting toolkit
  • Collects metrics from clusters and applications at specific intervals
  • Triggers alerts depending on conditions
• Grafana:
  • Visualization and analytics software
  • Allows query, visualization, and alerting operations for metrics; as well as alerting

Architecture

Prometheus Components

• Standard Prometheus deployment comes with the following components:

Prometheus Configuration Options

• Default prometheus configuration values are generally fine, but for particular use cases the prometheus-data-values.yaml file can be edited with options such as:

Grafana

• An open-source monitoring and observability platform
• Can connect to and pull data from many sources
• Provides dynamic dashboards, graphs and visualization for Prometheus backend data.

Grafana Configuration Options

• Similar to Grafana configuration, the grafana-data-values.yaml file must be edited with parameters, including the following, to work: