I'm using 0.14.2 Terraform version and 1.3.2 Helm provider.
I have a terraform task where I get an output and then I use in a helm chart. So far so good. In the task where I execute de helm deploy I set the var I have to use:
resource "helm_release" "kong-deploy" {
for_each = local.ob
chart = "./helm-charts/kong"
name = "kong"
namespace = each.value
create_namespace = true
version = "platform-2.10"
timeout = 30
values = [file("./helm-values/${local.environment}/kong/kong-${local.environment}-${each.value}.yaml")]
set {
name = "WORKER_NODE"
value = aws_eks_node_group.managed_workers[each.value].node_group_name
type = "string"
}
}
The tree directory is like that and I have to use the WORKER_NODE var in the postgres subchart.
├── charts
│ └── postgres
│ ├── Chart.yaml
│ ├── templates
│ │ ├── deployment.yaml
│ │ ├── env.yaml
│ │ └── service.yaml
│ └── values.yaml
├── Chart.yaml
├── files
│ └── purgeKongService.sh
├── templates
│ ├── configmap.yaml
│ ├── deployment.yaml
│ ├── env.yaml
│ ├── ingress.yaml
│ └── service.yaml
└── values.yamlI tried to use this var like the other charts, but with no success:
nodeSelector:
eks.amazonaws.com/nodegroup: "{{ .Values.WORKER_NODE }}"HOw can I pass this var to a subchart?
If I'm understanding this right, you want to access the parent chart value's inside the subchart. To do that you can set it as a global value or define the subchart values separately. In this case I would set it as a global value:
values.yaml:
global:
WORKER_NODE: <default value>From there, in your TF code you can set it via global.WORKER_NODE to pass to both kong chart and the postgres subchart.
Also, it's best practice to use camelCase when naming chart values. So instead of WORKER_NODE, you should do workerNode.
Best Practices: https://helm.sh/docs/chart_best_practices/values/
Subcharts and Globals: https://helm.sh/docs/chart_template_guide/subcharts_and_globals/#global-chart-values