I have a helm chart template, and I would like to use the result of whoami as a template variable. How do I do this?
So if my values.yaml file has:
env:
uniqueId: {{ whoami? }}how might I do this?
note: I am on os x, so whoami I believe assumes a linux environment, however, in the spirit of this being deployment agnostic I presume there is a non-unix way of doing this.
The Helm Chart's "values.yaml" file is typically for default values. Anything that you'd like to override should be done at time of install/upgrade of the chart.
The Helm docs show a lot of different ways in which values can be used: https://github.com/kubernetes/helm/blob/master/docs/charts.md
In this case, one option is to set the value on the command line:
helm install -set env.whoami=$(id -un) ./your-chart.tgzYou could then have a value.yaml file like:
env:
whoami: "default"Finally, you can use it in a template like:
containers:
- name: {{ .Chart.Name }}
image: "{{ .Values.image.repository }}:{{ .Chart.Version }}"
imagePullPolicy: {{ .Values.image.pullPolicy }}
env:
- name: WHOAMI
value: {{ .Values.env.whoami }}Obviously your template will vary, the above is just a snippet.