CODEWITHSUNDEEP
kubernetes
Quân nguyễn
Quân nguyễn

Reputation: 13

How to write configmap for app dotnetcore

i have a docker-composes for app dotnetcore, I'm new to k8s, my app has quite a long envvariable. "ConnectionStrings__DefaultConnection" as below

      productstudio:
    volumes:
      - ${USERPROFILE}/.aws:/root/.aws
    environment:
      - ASPNETCORE_ENVIRONMENT=Development
      - ConnectionStrings__DefaultConnection=Username=someuser;Password=somepassword;Server=postgres;Port=5432;Database=somedb;Search Path=some
      - EventBus__Enable=true
      - EventBus__HostUri=rabbitmq://eventbus/

and i write configmap

apiVersion: v1
kind: ConfigMap
metadata:
  name: be-productstudio-configmap
  labels:
    app: product-builder-be
    tier: backend
data:
  ASPNETCORE_ENVIRONMENT: Development
  EventBus__Enable: true
  EventBus__HostUri: rabbitmq://eventbus/
  ConnectionStrings__DefaultConnection: |-
    Username=someuser;
    Password=somepassword;
    Server=postgres;
    Port=5432;
    Database=somedb;
    Search Path=some

But I got an error

Error from server (BadRequest): error when creating "manifect-be.yml": ConfigMap in version "v1" cannot be handled as a ConfigMap: v1.ConfigMap.Data: ReadString: expects " or n, but found t, error found in #10 byte of ...|_Enable":true,"Event|..., bigger context ...|nSearch Path=productstudio\"","EventBus__Enable":true,"EventBus__HostUri":"rabbitmq://eventbus/"},"k|...

Can anyone help me, thanks

Upvotes: 1

Views: 292

Answers (1)

Wytrzymały Wiktor
Wytrzymały Wiktor

Reputation: 13898

I see two issues here:

  1. The error you see means that the value true for EventBus__Enable is not quoted and it gets treated as a keyword that means a boolean true. Environment variables are strings and must be quoted in your yaml definition. You need to make it look more like this:
  EventBus__Enable: "true"
  1. You should not use spaces in your key definitions of your ConfigMap:
Search Path=productstudio

as:

Each key under the data or the binaryData field must consist of alphanumeric characters, -, _ or ..

You can use the official docs for a reference of a correctly configured ConfigMaps, for example:

apiVersion: v1
kind: ConfigMap
metadata:
  name: game-demo
data:
  # property-like keys; each key maps to a simple value
  player_initial_lives: "3"
  ui_properties_file_name: "user-interface.properties"

  # file-like keys
  game.properties: |
    enemy.types=aliens,monsters
    player.maximum-lives=5
  user-interface.properties: |
    color.good=purple
    color.bad=yellow
    allow.textmode=true

Upvotes: 2

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