How to update variable in yaml file with environment variable in azure

Question

I am creating a pipeline to deploy a application, I have created variable group for database password in azure pipeline and want to use the password values in separate yaml which use to deploy application. azure-pipeline.yml

variables:
- group: databaseCredentials
steps:
- script: |
    set -x
    export POSTGRES_PASSWORD=${POSTGRES_PASSWORD}

Below is my secret yaml file, secret.yaml:

apiVersion: v1
kind: Secret
metadata:
  name: mysecret
type: Opaque
data:
  postgres-password: ${{POSTGRES_PASSWORD}}

I want to use the env variable value in yaml file, i tried like this but it fails, i dont want to do search/replace. Please suggest.

Answer 1

If you want to modify your yaml file you may use Token replace task . It will allow you to replace token in file with your variable values.

Here you have example usage:

- task: replacetokens@3
  inputs:
    targetFiles: 'yourfile.yaml'
    encoding: 'auto'
    writeBOM: true
    actionOnMissing: 'warn'
    keepToken: false
    tokenPrefix: '#{'
    tokenSuffix: '}#'
    useLegacyPattern: false
    enableTelemetry: true

and you file should be:

apiVersion: v1
kind: Secret
metadata:
  name: mysecret
type: Opaque
data:
  postgres-password: #{POSTGRES_PASSWORD}#

And then you don't need this:

steps:
- script: |
    set -x
    export POSTGRES_PASSWORD=${POSTGRES_PASSWORD}

Unless there is no other place where you want to use this env variable.