Kustomize

The following configuration options are available for Kustomize:

• namePrefix is a prefix appended to resources for Kustomize apps
• nameSuffix is a suffix appended to resources for Kustomize apps
• images is a list of Kustomize image overrides
• commonLabels is a string map of an additional labels
• commonAnnotations is a string map of an additional annotations

To use Kustomize with an overlay, point your path to the overlay.

Tip

If you’re generating resources, you should read up how to ignore those generated resources using the IgnoreExtraneous compare option.

Private Remote Bases

If you have remote bases that are either (a) HTTPS and need username/password (b) SSH and need SSH private key, then they’ll inherit that from the app’s repo.

This will work if the remote bases uses the same credentials/private key. It will not work if they use different ones. For security reasons your app only ever knows about its own repo (not other team’s or users repos), and so you won’t be able to access other private repos, even if Argo CD knows about them.

Read more about private repos.

kustomize build Options/Parameters

To provide build options to kustomize build of default kustomize version, use kustomize.buildOptions field of argocd-cm ConfigMap. Use kustomize.buildOptions.<version> to register version specific build options.

apiVersion: v1
kind: ConfigMap
metadata:
  name: argocd-cm
  namespace: argocd
  labels:
    app.kubernetes.io/name: argocd-cm
    app.kubernetes.io/part-of: argocd
data:
    kustomize.buildOptions: --load_restrictor none
    kustomize.buildOptions.v3.9.1: --output /tmp

Custom Kustomize versions

Argo CD supports using multiple kustomize versions simultaneously and specifies required version per application. To add additional versions make sure required versions are bundled and then use kustomize.path.<version> fields of argocd-cm ConfigMap to register bundled additional versions.

apiVersion: v1
kind: ConfigMap
metadata:
  name: argocd-cm
  namespace: argocd
  labels:
    app.kubernetes.io/name: argocd-cm
    app.kubernetes.io/part-of: argocd
data:
    kustomize.path.v3.5.1: /custom-tools/kustomize_3_5_1
    kustomize.path.v3.5.4: /custom-tools/kustomize_3_5_4

Once a new version is configured you can reference it in Application spec as following:

apiVersion: argoproj.io/v1alpha1
kind: Application
metadata:
  name: guestbook
spec:
  source:
    repoURL: https://github.com/argoproj/argocd-example-apps.git
    targetRevision: HEAD
    path: guestbook-kustomize
    kustomize:
      version: v3.5.4

Additionally application kustomize version can be configured using Parameters tab of Application Details page or using following CLI command:

argocd app set <appyName> --kustomize-version v3.5.4

Build Environment

Kustomize does not support parameters and therefore cannot support the standard build environment.