If you want to get the values of Environment Variables in AWS Lambda using Node.js runtime follow the instructions below.
To access the Environment Variables of Lambda Functions using Node.js or javascript simply use the code below.
const environmentVariable = process.env.ENVIRONMENT_VARIABLELet’s say that my environment variable has a name of DB_USER, I will use the code below to get its value.
To get the AWS Region where your Lambda Function is running we need to access the Environment Variable AWS_REGION.
To access the environment variable AWS_REGION using Node.js Lambda Function we can use process.env.AWS_REGION.
AWS Lambda Environment Variables are a useful way to input configuration values to your AWS Lambda runtime. Especially, when there are configurations that are different in your Development environment compared to your Production environment. Like name of DynamoDB tables or MySQL databases.
Below we discuss how we can retrieve the values of Environment Variables in AWS Lambda using Ruby.
The code for accessing Environment Variables on AWS Lambda is just the same code for accessing environment variables in your local computer or server.
Here is the code to access environment variables using Ruby.
env_var = ENV['ENVIRONMENT_VARIABLE']If we want to get the value of an environment variable with the key of DB_HOST then we will use the code below.