Templates and Values in different repos via ArgoCD - kubernetes-helm

Question

I'm looking for insights for the following situation...
I have one ArgoCD application pointing to a Git repo (A), where there's a values.yaml;
I would like to use the Helm templates stored in a different repo (B);
Any suggestions/alternatives on how to make this work?

Answer 1

I think helm dependency can help solve your problem.
In file Chart.yaml of repo (A), declares dependency (chart of repo B)
# Chart.yaml
dependencies:
- name: chartB
version: "0.0.1"
repository: "https://link_to_chart_B"
Link references:
https://github.com/argoproj/argocd-example-apps/tree/master/helm-dependency
P/s: You need add repo chart into ArgoCD.

Answer 2

The way we solved it is by writing a very simple helm plugin
and pass to it the URL where the Helm chart location (chartmuseum in our case) as an env variable
server:
name: server
config:
configManagementPlugins: |
- name: helm-yotpo
generate:
command: ["sh", "-c"]
args: ["helm template --version ${HELM_CHART_VERSION} --repo ${HELM_REPO_URL} --namespace ${NAMESPACE} $HELM_CHART_NAME --name-template=${HELM_RELEASE_NAME} -f $(pwd)/${HELM_VALUES_FILE} "]
you can run the helm command with the flag of --repo
and in the ArgoCD Application yaml you call the new plugin
apiVersion: argoproj.io/v1alpha1
kind: Application
metadata:
name: application-test
namespace: infra
spec:
destination:
namespace: infra
server: https://kubernetes.default.svc
project: infra
source:
path: "helm-values-files/telegraf"
repoURL: https://github.com/YotpoLtd/argocd-example.git
targetRevision: HEAD
plugin:
name: helm-yotpo
env:
- name: HELM_RELEASE_NAME
value: "telegraf-test"
- name: HELM_CHART_VERSION
value: "1.8.18"
- name: NAMESPACE
value: "infra"
- name: HELM_REPO_URL
value: "https://helm.influxdata.com/"
- name: HELM_CHART_NAME
value: "telegraf"
- name: HELM_VALUES_FILE
value: "telegraf.yaml"
you can read more about it in the following blog
post