Adding extraEnv to helm chart via terraform and terragrunt - apache-spark

Question

I need to set additional variables in my value.yaml (link to jaeger https://github.com/jaegertracing/helm-charts/blob/main/charts/jaeger/values.yaml#L495) helm chart via terraform + terragrunt. In values.yaml, the code looks like this:
spark:
extraEnv: []
It is necessary that it be like this:
spark:
extraEnv:
- name: JAVA_OPTS
value: "-Xms4g -Xmx4g"
Terraform uses this dynamic block:
dynamic "set" {
for_each = var.extraEnv
content {
name = "spark.extraEnv [${set.key}]"
value = set.value
}
}
The variable is defined like this:
variable "extraEnv" {
type = map
}
From terragrunt I pass the value of the variable:
extraEnv = {
"JAVA_OPTS" = "-Xms4g -Xmx4g"
}
And I get this error:
Error: failed parsing key "spark.extraEnv [JAVA_OPTS]" with value -Xms4g -Xmx4g, error parsing index: strconv.Atoi: parsing "JAVA_OPTS": invalid syntax
on main.tf line 16, in resource "helm_release" "jaeger":
16: resource "helm_release" "jaeger" {
Tell me how to use the dynamic block correctly in this case. I suppose that in this case you need to use a list of maps, but I do not understand how to use this in a dynamic block.
UPD:
I solved my problem in a different way.
In values, defined the list 'spark.extraEnv' using yamlencode.
values = [
"${file("${path.module}/values.yaml")}",
yamlencode({
spark = {
extraEnv = var.spark_extraEnv
}
})
]
in variables.tf
variable "spark_extraEnv" {
type = list(object({
name = string
value = string
}))
}
And in terragrunt passed the following variable value:
spark_extraEnv = [
{
name = "JAVA_OPTS"
value = "-Xms4g -Xmx4g"
}
]

Answer 1

I landed here while I was looking for setting extraEnv for a different chart. Finally figured answer for the above question as well:
set {
name = "extraEnv[0].name"
value = "JAVA_OPTS"
}
set {
name = "extraEnv[0].value"
value = "-Xms4g -Xmx4g"
}