• Deployment landscape in k8s is quite rich: Weave flux, ksonnet, pulumi, Octupus, DeployHub and Helm …
• Those tools have a lot of system capabilities
  • Package/Dependency Management
  • Application Descriptors: Metadata, urls to upstreams
  • Application Discovery: places where to search for applications
  • Dashboards
  • Lifecycle Management
  • Customization
• Kustomize’s target is customization i.e. it let’s you customize your yaml files to your specific env.
• Kustomize read the kustomization.yaml file
• The work behind Kustomize:
• Kustomize provides many features:
  • Can add specific annotations, labels, and prefixes in names, namespaces, to secific resources.
  • Overlays: create separate kustomization files for each environnement, pulling from a base.
  • Mix-in configs: pulls configurations from different bases.
  • Patches: operate on existing yaml files, replace or add segments and outputs it.
  • ConfigMaps/Secret Generators: generate configmaps push them into the resources.