Managing BLB via Terraform

Updated at：2025-10-16

Overview

This document provides guidance on managing BLB through Terraform, enabling the swift creation, administration, and handling of BLB resources.

Requirement scenarios

Simplify resource operations by following the Infrastructure as Code (IaC) principles and managing the BLB lifecycle through relevant Terraform code files.

Solution overview

Download the Terraform tool and prepare the basic environment
Write .tf file to configure the basic attributes of the BLB
Complete the lifecycle management of BLB through relevant Terraform commands

Configuration steps

Environment preparation

Prepare a PC or laptop that can connect to the Internet
Sign in to Terraform official website
Select the corresponding system to download. After decompression, it is a binary executable file requiring environment variable configuration
Enter the configuration file vi ~/.bash_profile
Add the environment variable export PATH=${PATH}:/path (path: binary file location)
Make the configuration take effect source ~/.profile
Check if Terraform can run normally: Execute terraform -v. If the version number can be displayed normally, the installation is successful

Terraform-managed BLB example

Edit the relevant tf file to manage BLB instance configurations

Edit main.tf: Used to configure the provider version to download and subsequent required AK/SK information

Plain Text

1    terraform {
2        required_providers {
3            baiducloud = {
4 source  = "baidubce/baiducloud"    #source address
5 version = "1.12.0"  #version number
6            }
7        }
8    }
9
10    provider "baiducloud" {
11 access_key  = "xxxxx"    #AK corresponding to user UID
12 secret_key  = "xxxx"       #SK corresponding to the user UID
13 region      = "bj"               #Region where the instance will be created
14    }

Edit the .tf file to create a VPC

Plain Text

1    resource "baiducloud_vpc" "default" {
2        provider = baiducloud.bj
3        name = "terra-test-vpc"
4        description = "baiducloud vpc created by terraform"
5        cidr = "192.168.0.0/16"
6    }

Edit the .tf` file to create a subnet

Plain Text

1    resource "baiducloud_subnet" "default" {
2      name = "terra-subnet"
3      zone_name = "cn-bj-a"
4      cidr = "192.168.3.0/24"
5 vpc_id      = "${baiducloud_vpc.default.id}"  # The VPC ID created in the previous step
6    }

Edit the .tf file to create a BLB instance

Plain Text

1    resource "baiducloud_blb" "default" {
2      name        = "terratestLoadBalance-changed"
3      description = "this is a test LoadBalance instance"
4 vpc_id      = "${baiducloud_vpc.default.id}"     # vpcid created in the previous step
5 subnet_id   = "${baiducloud_subnet.default.id}"  # The Subnet ID created in the previous step
6    }

The complete configuration information is as follows:

Plain Text

1    resource "baiducloud_vpc" "default" {
2        name = "terra-test-vpc"
3        description = "baiducloud vpc created by terraform"
4        cidr = "192.168.0.0/16"
5    }
6    resource "baiducloud_subnet" "default" {
7        name = "terra-subnet"
8        zone_name = "cn-bj-a"
9        cidr = "192.168.3.0/24"
10        vpc_id = "${baiducloud_vpc.default.id}"
11    }
12    resource "baiducloud_blb" "default" {
13        name        = "terratestLoadBalance-changed"
14        description = "this is a test LoadBalance instance"
15        vpc_id      = "${baiducloud_vpc.default.id}"
16        subnet_id   = "${baiducloud_subnet.default.id}"
17    }