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geek-cookbook/_includes/kubernetes-flux-helmrelease.md
2023-10-20 13:02:27 +13:00

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### HelmRelease
Lastly, having set the scene above, we define the HelmRelease which will actually deploy {{ page.meta.helmrelease_name }} into the cluster. We start with a basic HelmRelease YAML, like this example:
```yaml title="/{{ page.meta.helmrelease_namespace }}/helmrelease-{{ page.meta.helmrelease_name }}.yaml"
apiVersion: helm.toolkit.fluxcd.io/v2beta1
kind: HelmRelease
metadata:
name: {{ page.meta.helmrelease_name }}
namespace: {{ page.meta.helmrelease_namespace }}
spec:
chart:
spec:
chart: {{ page.meta.helmrelease_namespace }}
version: {{ page.meta.helm_chart_version }} # auto-update to semver bugfixes only (1)
sourceRef:
kind: HelmRepository
name: {{ page.meta.helm_chart_repo_name }}
namespace: flux-system
interval: 15m
timeout: 5m
releaseName: {{ page.meta.helmrelease_namespace }}
values: # paste contents of upstream values.yaml below, indented 4 spaces (2)
```
1. I like to set this to the semver minor version of the upstream chart, so that I'll inherit bug fixes but not any new features (*since I'll need to manually update my values to accommodate new releases anyway*)
2. Paste the full contents of the upstream [values.yaml]({{ page.meta.values_yaml_url }}) here, indented 4 spaces under the `values:` key
If we deploy this helmrelease as-is, we'll inherit every default from the upstream chart. That's probably hardly ever what we want to do, so my preference is to take the entire contents of the helm chart's [values.yaml]({{ page.meta.values_yaml_url }}), and to paste these (*indented*), under the `values` key. This means that I can then make my own changes in the context of the entire values.yaml, rather than cherry-picking just the items I want to change, to make future chart upgrades simpler.
--8<-- "kubernetes-why-not-full-values-in-configmap.md"
Then work your way through the values you pasted, and change any which are specific to your configuration.