Configure dashboard via values - kubernetes

Question

As the title indicates I'm trying to setup grafana using helmfile with a default dashboard via values.
The relevant part of my helmfile is here
releases:
...
- name: grafana
namespace: grafana
chart: stable/grafana
values:
- datasources:
datasources.yaml:
apiVersion: 1
datasources:
- name: Prometheus
type: prometheus
access: proxy
url: http://prometheus-server.prometheus.svc.cluster.local
isDefault: true
- dashboardProviders:
dashboardproviders.yaml:
apiVersion: 1
providers:
- name: 'default'
orgId: 1
folder: ''
type: file
disableDeletion: false
editable: true
options:
path: /var/lib/grafana/dashboards
- dashboards:
default:
k8s:
url: https://grafana.com/api/dashboards/8588/revisions/1/download
As far as I can understand by reading here I need a provider and then I can refer to a dashboard by url. However when I do as shown above no dashboard is installed and when I do as below (which as )
- dashboards:
default:
url: https://grafana.com/api/dashboards/8588/revisions/1/download
I get the following error message
Error: render error in "grafana/templates/deployment.yaml": template: grafana/templates/deployment.yaml:148:20: executing "grafana/templates/deployment.yaml" at <$value>: wrong type for value; expected map[string]interface {}; got string
Any clues about what I'm doing wrong?

Answer 1

I think the problem is that you're defining the datasources, dashboardProviders and dashboards as lists rather than maps so you need to remove the hyphens, meaning that the values section becomes:
values:
datasources:
datasources.yaml:
apiVersion: 1
datasources:
- name: Prometheus
type: prometheus
url: http://prometheus-prometheus-server
access: proxy
isDefault: true
dashboardProviders:
dashboardproviders.yaml:
apiVersion: 1
providers:
- name: 'default'
orgId: 1
folder: ''
type: file
disableDeletion: false
editable: true
options:
path: /var/lib/grafana/dashboards
dashboards:
default:
k8s:
url: https://grafana.com/api/dashboards/8588/revisions/1/download
The grafana chart has them as maps and using helmfile doesn't change that