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Overview

AWS resources used

The following is a map of all the resources okctl will set up

cloud resources

AWS resource dependencies

The following shows how relations between the different resources

resource dependencies

Kubernetes installed compontents

The following shows how relations between the different resources

Monitoring

Prometheus

Time series database
  • Enables scaping of metrics from pods
  • Retrieves log data from Loki
  • Retrieves trace data from Tempo
  • Provides data for Grafana

Grafana

Data visualizer
  • Reads log, metric and trace data from Prometheus
  • Provides powerful tools for data visualization

Loki

Log aggregator
  • Acts as a data source for Prometheus
  • Accepts log data from Promtail

Promtail

Log scraper
  • Scrapes and labels log data from pods
  • Pushes log data to Loki

Tempo

Tracing backend
  • Acts as a datasource for Prometheus
  • Supports OpenTelemetry, Jaeger, Zipkin

Kube System

AWS Load Balancer

Ingress controller
  • Provides load balancers based on Kubernetes Ingress'

AutoScaler

Horizontal cluster scaler
  • Adds and removes cluster nodes depending on load

EBS CSI Controller

Persistent volume provider
  • Creates AWS Elastic Block Store based on Persistent Volume Claims and connects them to pods

External DNS

Domain administration controller
  • Configures Route53 entries based on Kubernetes Ingress'

External Secrets

Secrets controller
  • Fetches secrets from AWS Parameter Store and Secrets Manager, then injects them into the cluster

ArgoCD

ArgoCD

Continuous Deployment Provider
  • Synchronizes Kubernetes state with a Git repository
  • Enables rollback of state based on commit history
  • Provides superficial administration of cluster applications

Dex

A pluggable OAuth2 handler
  • Acts as a mediator for Cognito
  • Handles authentication for ArgoCD
  • Handles authentication for Grafana

Last update: 2021-09-02