CNCF SK meetup

1. @ondrejsika ondrej@sika.io sika.io
Ondrej Sika
ondrej@sika.io
@ondrejsika
Kubernetes Monitoring
using Prometheus Stack

2. @ondrejsika ondrej@sika.io sika.io
Ondrej Sika
I'm a freelance DevOps Architect,
Consultant & Lecturer.
I'm boosting effectivity & productivity of
software development teams by using
tools which lead to faster development and
reliable operation of software products.
I do popular DevOps training in Czech
Republic, Slovakia & Europe.

3. @ondrejsika ondrej@sika.io sika.io
Open Source DevOps Stack I Do
- Git, Gitlab - Versioning & Collaboration
- Gitlab CI - Continuous Integration, Continuous Deployment
- Docker, Kubernetes - Containers & Orchestration
- Rancher - Kubernetes provisioning
- Terraform - Infrastructure management
- Ansible - Config Management
- Prometheus, Alertmanager, Grafana - Monitoring Stack
- EFK (ELK) - Log Management
- DigitalOcean, AWS, Proxmox - Public or Private Cloud
- Ceph - On Premise Storage

4. @ondrejsika ondrej@sika.io sika.io
Prometheus Stack
- Cloud Native monitoring
- Components
- Prometheus (metrics server)
- Alert Manager (alerting)
- Grafana (Dashboards)
- Declarative configuration (in code) for all
components

5. @ondrejsika ondrej@sika.io sika.io
Prometheus
- Collects metrics from your apps & infra
- Service discovery (Kubernetes, Consul, …)
- Supports advanced queries
- Sends alerts using Alert Manager

6. @ondrejsika ondrej@sika.io sika.io
Alert Manager
- Alerting component for Prometheus
- Collects & groups alerts
- Multiple backends (email, Pager Duty, Slack)
- Silencers

7. @ondrejsika ondrej@sika.io sika.io
Grafana
- Dashboards for Prometheus data (and other data
sources)
- Customizable dashboards & views
- Official & Community Dashboard Hub

8. @ondrejsika ondrej@sika.io sika.io
Prometheus Operator
The Prometheus Operator provides Kubernetes native
deployment and management of Prometheus and
related monitoring components.
https://github.com/prometheus-operator/prometheus-operator

9. @ondrejsika ondrej@sika.io sika.io
kube-prometheus-stack (Helm Chart)
Helm chart which deploys:
- Prometheus Operator
- kube-prometheus
https://github.com/prometheus-community/helm-charts/tree/main
/charts/kube-prometheus-stack

10. @ondrejsika ondrej@sika.io sika.io
Prometheus Monitoring API
- Applications expose /metrics endpoint for Prometheus
- Prometheus support almost all languages and
frameworks which make implementation of metrics
endpoint easy
https://github.com/ondrejsika/go-server-with-metrics

11. @ondrejsika ondrej@sika.io sika.io
Example Go server with /metrics endpoint

12. @ondrejsika ondrej@sika.io sika.io
Example /metrics output

13. @ondrejsika ondrej@sika.io sika.io
Monitoring Components & Configuration
- Service Monitors
- PrometheusRules
- Grafana Dashboard Configuration (ConfigMap + label
grafana_dashboard)

14. @ondrejsika ondrej@sika.io sika.io
ServiceMonitor
Specification of desired Service (pod + port) selection for
target discovery by Prometheus.

15. @ondrejsika ondrej@sika.io sika.io

16. @ondrejsika ondrej@sika.io sika.io
PrometheusRule
PrometheusRule defines alerting rules for a Prometheus
instance.

17. @ondrejsika ondrej@sika.io sika.io

18. @ondrejsika ondrej@sika.io sika.io
Grafana Dashboard ConfigMap
Simple ConfigMap which provides JSON definition of
Grafana Dashboard.
Must be deployed in same namespace as Grafana.

19. @ondrejsika ondrej@sika.io sika.io

20. @ondrejsika ondrej@sika.io sika.io
Alert Manager Configuration
Alert manager is configured using values in
kube-prometheus-stack helm.

21. @ondrejsika ondrej@sika.io sika.io
Demo Time

22. @ondrejsika ondrej@sika.io sika.io
sika.link/k8s-prom

23. @ondrejsika ondrej@sika.io sika.io
Thank you & Questions
Ondrej Sika
email: ondrej@sika.io
web: sika.io
twitter: @ondrejsika
linkedin: /in/ondrejsika
Slides: https://sika.link/k8s-prom-slides
Examples: https://sika.link/k8s-prom