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Configure AspNetCore to get settings from environment variables #9522

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shipserv created

Hi AspNetZero,

We have been migrating AspNetZero in docker using Kubernetes.

Currently, our settings like SQL Connection String (i.e.ConnectionStrings in appsettings.json) are hard-coded in these appsettings json files as seen below. What we are currently doing now is we split the appsettings based on the environment and we just set ASPNETCORE_ENVIRONMENT as env variable according to the environment where it's deployed and running.

We would like to move all these settings as environment variables in Kubernetes as we did with our other apps. Please let us know how to properly do it.

Regards, Allan

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5 Answer(s)
  • User Avatar
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    zony created
    Support Team

    Hi shipserv Do you want to load the configuration items in appsettings.json into environment variables?

  • User Avatar
    0
    shipserv created

    hi Zony,

    Yes, that's right. So that all sensitive data such as database connection string will be stored on environment variables rather than in codes of appsettings.json. We don't want these configs to be hardcoded.

    Regards, Allan

  • User Avatar
    0
    zony created
    Support Team

    hi shipserv, I think you should create an env.yml in which to write environment variables according to the rules. example:

    apiVersion: apps/v1
kind: Deployment
metadata:
  name: test-service
  labels:
    app: test-service
spec:
  selector:
    matchLabels:
      app: test-service
  template:
    metadata:
      labels:
        app: test-service
    spec:
      containers:
      - name: test-service
        env:
          - name: ConnectionStrings__Default
            value: User ID=postgres;Password=XXXX;Host=XXXX;Port=1433;Database=TestDataBase;
          - name: ConnectionStrings__AbpTenantManagement
            value: User ID=postgres;Password=XXX;Host=XXXX;Port=1433;Database=TestDataBase;
          - name: IdentityServer__AuthorityServer
            value: http://localhost:5000

    Naming rules: https://docs.microsoft.com/en-us/aspnet/core/fundamentals/configuration/?view=aspnetcore-3.1#environment-variables

  • User Avatar
    0
    zony created
    Support Team

    You can also separate environment variables. configMap.yml

    apiVersion: v1
data:
 ConnectionStrings__Default: User ID=postgres;Password=XXXX;Host=XXXX;Port=1433;Database=TestDataBase;

kind: ConfigMap
metadata:
 labels:
   app: test-service
 name: test-service-config

    deploy.yml

    apiVersion: apps/v1
kind: StatefulSet
metadata:
 name: test-service
 labels:
   app: test-service
spec:
 selector:
   matchLabels:
     app: test-service
 serviceName: test-service
 replicas: 2
 updateStrategy:
   type: RollingUpdate
 template:
   metadata:
     labels:
         app: test-service
   spec:
     containers:
       - image: xxx:latest
         name: test-service
         envFrom:
           - configMapRef:
               name: test-service-config # Here
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    ismcagdas created
    Support Team
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