README.md

Prometheus

Contents

• Prometheus
  • PromQL
  • Prometheus SDK
  • Grafana
  • Grafana Dashboards
  • Prometheus operator
• Reference links

Prometheus

• Observability & Monitoring
• Metrics
• Timeseries Databases
• Configuring Prometheus
  • Scrape Config
  • Recording Rules
  • Alerting Rules

Assignments

• Download and run Prometheus locally or in a Docker container

PromQL

• Prometheus metrics
• Types
  • Counters
  • Gauges
  • Histograms
  • Summary
• PromQL syntax & operators
• Instant Vector vs Range Vectors
• PromQL functions
• Querying prometheus using the HTTP API

Assignments

• Install Prometheus using Helm & access Prometheus using kubectl port-forward.
• Write a query to find cpu usage
• Write a query to find memory usage

Prometheus SDK

• Instrumentation
• Client libraries
  • Go
  • Scala/Java
  • Python
  • Ruby
• PushGateway
• Exporters

Assignments

• Write a Go program to expose Prometheus metrics using the Go client

Grafana

• Running Grafana
• Dashboards
• DataSources
• Notification Channels & alerts
• Configuration
• Provisioning

Assignments

• Deploy Grafana and add a Prometheus instance as a datasource
• Create a Slack webhook and add it as a notification channel in Grafana
• Provision a datasource on Grafana startup

Grafana Dashboards

• Creating Dashboards
• Query editor
• Query inspector
• Panel Types (Graphs, Singlestats, ...)
• Template variables
• Exporting and importing dashboards

Assignments

• Create a dashboard with multiple panels showing memory, cpu usage
• Export a dashboard as json and import it into another Grafana instance
• Provision a dashboard on Grafana startup

Reference Links

• Prometheus docs
• Grafana docs
• Understanding CPU usage
• Infracloud blog - Monitoring Kubernetes with Prometheus operator (git repo)
• Using the Prometheus Operator Helm chart with a values.yaml override