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kubernetesdeploymentkubernetes-helm

How to include default value with tpl function call

I have top level chart and one of the subcharts. In subchart I want to use variables that defined in level chart, and if it is not found - use default value.

I have code like this in one of deployment definitions in my subchart

name: {{tpl .Values.global.my.GlobalValue .}}

where Values.global.my.GlobalValue - is parameter from top level chart.

Problem is when I try to install only subchart - I am failing, I need some defaults.

I tried to puth like below and it is not working

name: {{default defaultName tpl .Values.global.my.GlobalValue .}}
name: {{tpl .Values.global.my.GlobalValue . | defaultName}}

Could you please advise the correct way to do that.

Solution

  • As per Using the default function:

    One function frequently used in templates is the default function: default DEFAULT_VALUE GIVEN_VALUE. This function allows you to specify a default value inside of the template, in case the value is omitted.

    You should use:

    name: {{ .Values.global.my.GlobalValue | default "defaultName" | quote }}