Helm Template random value

2019/01/05 |

Cloud/ Kubernetes

| Cloud Kubernetes

Helm Template random value

Sprig Function Documentation

The Sprig library provides over 70 template functions for Go’s template language.

• http://masterminds.github.io/sprig/

Random functions

These four functions generate cryptographically secure random strings, but with different base character sets:

• randAlphaNum uses 0-9a-zA-Z
• randAlpha uses a-zA-Z
• randNumeric uses 0-9
• randAscii uses all printable ASCII characters

Each of them takes one parameter: the integer length of the string. e.g. This will produce a random string with 12 ASCII characters.

randAscii 12

Using in the Helm template

values.yaml

data_with_rand_value: 'abcd-{{ randAlphaNum 12 }}'

templates/

data_with_rand_value: {{ tpl .Values.data_with_rand_value . | quote }}

random result

data_with_rand_value: "abcd-jXf7OWkGpRH2"