Environment Variables with Serverless and AWS Lambda - node.js

Question

I am learning serverless framework and I'm making a simple login system.
Here is my serverless.yml file
service: lms-auth
provider:
name: aws
runtime: nodejs8.10
stage: dev
region: ap-south-1
environment:
MONGODB_URI: $(file(../env.yml):MONOGDB_URI)
JWT_SECRET: $(file(../env.yml):JWT_SECRET)
functions:
register:
handler: handler.register
events:
- http:
path: auth/register/
method: post
cors: true
login:
handler: handler.login
events:
- http:
path: auth/login/
method: post
cors: true
plugins:
- serverless-offline
As you can see, I have two environment variables and both of them are referencing to a different file in the same root folder.
Here is that env.yml file
MONOGDB_URI: <MY_MONGO_DB_URI>
JWT_SECRET: LmS_JWt_secREt_auth_PasSWoRds
When I do sls deploy, I see that both the variables are logging as null. The environment variables aren't sent to lambda.
How can I fix this?
Also, currently I'm using this method and adding the env.yml to .gitignore and saving the values. Is there any other efficient way of hiding sensitive data?

Answer 1

I would do something like this to help you out with the syntax
service: lms-auth
custom: ${file(env.yml)}
provider:
name: aws
runtime: nodejs8.10
stage: dev
region: ap-south-1
environment:
MONGODB_URI: ${self:custom.mongodb_uri}
JWT_SECRET: ${self:custom.jwt_secret}
functions:
register:
handler: handler.register
events:
- http:
path: auth/register/
method: post
cors: true
login:
handler: handler.login
events:
- http:
path: auth/login/
method: post
cors: true
plugins:
- serverless-offline
Then in your env.yml you can do
mongodb_uri: MY_MONGO_DB_URI
jwt_secret: LmS_JWt_secREt_auth_PasSWoRds

Answer 2

Enviroment variables
1. Add useDotenv:true to your .yml file 2.Add your variables like this -> ${env:VARIABLE_NAME}3.Create a file called .env.dev and write the variables (You can add .env.prod but you have to change the stage inside your .yml file ) Example :
service: lms-auth
useDotenv: true
provider:
name: aws
runtime: nodejs12.x
stage: dev
region: us-east-1
environment:
MONGODB_URI: ${env:MONOGDB_URI}
JWT_SECRET: ${env:JWT_SECRET}
functions:
register:
handler: handler.register
events:
- http:
path: auth/register/
method: post
cors: true
login:
handler: handler.login
events:
- http:
path: auth/login/
method: post
cors: true
plugins:
- serverless-offline
.env.dev
MONOGDB_URI = The URI Value
JWT_SECRET = The JWT Scret Value

Answer 3

I ended up solving it. I had set up my Dynamo DB in AWS us-west region. reinitialized in US-East-2, and reset the region under 'provider' within the .yml file.