Lambda TerraForm
In the context of cloud infrastructure and provisioning, “Lambda” and “Terraform” are two different concepts and technologies:
1. AWS Lambda:
AWS Lambda is a serverless computing service provided by Amazon Web Services (AWS). It allows you to run code without provisioning or managing servers. With Lambda, you can upload your code in the form of a function, and it will automatically scale and execute in response to specific events or triggers. AWS Lambda supports multiple programming languages, and you only pay for the compute time consumed by your functions.
2. Terraform:
Terraform is an open-source infrastructure as code (IaC) tool developed by HashiCorp. It allows you to define, manage, and provision infrastructure resources across various cloud providers (AWS, Azure, Google Cloud, etc.) and on-premises environments. Terraform uses declarative configuration files (usually written in HashiCorp Configuration Language – HCL) to describe the desired state of your infrastructure. When you apply these configurations, Terraform takes care of creating, updating, or destroying resources to match the desired state.
If you intend to combine Lambda and Terraform, it typically means using Terraform to manage and provision the resources required for deploying AWS Lambda functions, such as IAM roles, permissions, Lambda function configuration, and event triggers.
For example, in Terraform, you might define a Lambda function and its associated resources like this:
“`hcl
provider “aws” {
region = “us-east-1”
}
resource “aws_lambda_function” “example_lambda” {
filename = “lambda_function_payload.zip”
function_name = “example-lambda”
role = aws_iam_role.lambda_exec.arn
handler = “lambda_function_handler.handler”
runtime = “nodejs14.x”
memory_size = 256
timeout = 10
}
resource “aws_iam_role” “lambda_exec” {
name = “lambda-exec-role”
assume_role_policy = jsonencode({
Version = “2012-10-17”
Statement = [
{
Action = “sts:AssumeRole”
Effect = “Allow”
Principal = {
Service = “lambda.amazonaws.com”
}
}
]
})
}
“`
This is a simple Terraform configuration that defines an AWS Lambda function and an associated IAM role. The `aws_lambda_function` block creates the Lambda function, and the `aws_iam_role` block defines the IAM role that grants permissions to the Lambda function.
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