How to deploy a LAMP stack in AWS using terraform
Hello Everyone
Welcome to CloudAffaire and this is Debjeet.
In the last blog post, we have discussed terraform override.
https://cloudaffaire.com/terraform-override/
In this blog post, we will discuss how to deploy a LAMP stack in AWS using terraform.
What is a LAMP stack?
A LAMP stack is simply a web application created on Linux server using Apache, PHP and MySQL (L=Linux, A=Apache, M=MySQL, P=PHP). In this demo, we will use an EC2 Linux instance to create our frontend web application and will use AWS MySQL RDS as backend database.
How to deploy a LAMP stack in AWS using terraform:
|
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 |
##------------------------------------------- ## Terraform: Deploy A LAMP Stack In AWS ## ##------------------------------------------- ## Create a directory and get inside it mkdir terraform && cd terraform ## Create index.php (shows web pasge visit counts) vi index.php ---------------------- $link = mysql_connect(' if (!$link) { die('Could not connect: ' . mysql_error()); } else { $selectdb = mysql_select_db("mydb"); if (!$selectdb) { die('Could not connect: ' . mysql_error()); } else { $data = mysql_query("SELECT visits FROM counter"); if (!$data) { die('Could not connect: ' . mysql_error()); } else { $add=mysql_query("UPDATE counter SET visits = visits+1"); if(!$add) { die('Could not connect: ' . mysql_error()); } else { print "
} } } } mysql_close($link); ?> ----------------------- :wq ## Create main.tf vi main.tf ----------------------- #creates VPC, one public subnet, two private subnets, one EC2 instance and one MYSQL RDS instance #declare variables variable "access_key" { default = " } variable "secret_key" { default = " } variable "region" { default = "ap-south-1" } variable "vpc_cidr" { default = "10.0.0.0/16" } variable "subnet_one_cidr" { default = "10.0.1.0/24" } variable "subnet_two_cidr" { default = ["10.0.2.0/24","10.0.3.0/24"] } variable "route_table_cidr" { default = "0.0.0.0/0" } variable "web_ports" { default = ["22","80", "443", "3306"] } variable "db_ports" { default = ["22", "3306"] } variable "images" { type = "map" default = { "us-east-1" = "ami-0937dcc711d38ef3f" "us-east-2" = "ami-04328208f4f0cf1fe" "us-west-1" = "ami-0799ad445b5727125" "us-west-2" = "ami-032509850cf9ee54e" "ap-south-1" = "ami-0937dcc711d38ef3f" "ap-northeast-2" = "ami-018a9a930060d38aa" "ap-southeast-1" = "ami-04677bdaa3c2b6e24" "ap-southeast-2" = "ami-0c9d48b5db609ad6e" "ap-northeast-1" = "ami-0d7ed3ddb85b521a6" "ca-central-1" = "ami-0de8b8e4bc1f125fe" "eu-central-1" = "ami-0eaec5838478eb0ba" "eu-west-1" = "ami-0fad7378adf284ce0" "eu-west-2" = "ami-0664a710233d7c148" "eu-west-3" = "ami-0854d53ce963f69d8" "eu-north-1" = "ami-6d27a913" } } #aws provider provider "aws" { access_key = "${var.access_key}" secret_key = "${var.secret_key}" region = "${var.region}" } #get AZ's details data "aws_availability_zones" "availability_zones" {} #create VPC resource "aws_vpc" "myvpc" { cidr_block = "${var.vpc_cidr}" enable_dns_hostnames = true tags { Name = "myvpc" } } #create public subnet resource "aws_subnet" "myvpc_public_subnet" { vpc_id = "${aws_vpc.myvpc.id}" cidr_block = "${var.subnet_one_cidr}" availability_zone = "${data.aws_availability_zones.availability_zones.names[0]}" map_public_ip_on_launch = true tags { Name = "myvpc_public_subnet" } } #create private subnet one resource "aws_subnet" "myvpc_private_subnet_one" { vpc_id = "${aws_vpc.myvpc.id}" cidr_block = "${element(var.subnet_two_cidr, 0)}" availability_zone = "${data.aws_availability_zones.availability_zones.names[0]}" tags { Name = "myvpc_private_subnet_one" } } #create private subnet two resource "aws_subnet" "myvpc_private_subnet_two" { vpc_id = "${aws_vpc.myvpc.id}" cidr_block = "${element(var.subnet_two_cidr, 1)}" availability_zone = "${data.aws_availability_zones.availability_zones.names[1]}" tags { Name = "myvpc_private_subnet_two" } } #create internet gateway resource "aws_internet_gateway" "myvpc_internet_gateway" { vpc_id = "${aws_vpc.myvpc.id}" tags { Name = "myvpc_internet_gateway" } } #create public route table (assosiated with internet gateway) resource "aws_route_table" "myvpc_public_subnet_route_table" { vpc_id = "${aws_vpc.myvpc.id}" route { cidr_block = "${var.route_table_cidr}" gateway_id = "${aws_internet_gateway.myvpc_internet_gateway.id}" } tags { Name = "myvpc_public_subnet_route_table" } } #create private subnet route table resource "aws_route_table" "myvpc_private_subnet_route_table" { vpc_id = "${aws_vpc.myvpc.id}" tags { Name = "myvpc_private_subnet_route_table" } } #create default route table resource "aws_default_route_table" "myvpc_main_route_table" { default_route_table_id = "${aws_vpc.myvpc.default_route_table_id}" tags = { Name = "myvpc_main_route_table" } } #assosiate public subnet with public route table resource "aws_route_table_association" "myvpc_public_subnet_route_table" { subnet_id = "${aws_subnet.myvpc_public_subnet.id}" route_table_id = "${aws_route_table.myvpc_public_subnet_route_table.id}" } #assosiate private subnets with private route table resource "aws_route_table_association" "myvpc_private_subnet_one_route_table_assosiation" { subnet_id = "${aws_subnet.myvpc_private_subnet_one.id}" route_table_id = "${aws_route_table.myvpc_private_subnet_route_table.id}" } resource "aws_route_table_association" "myvpc_private_subnet_two_route_table_assosiation" { subnet_id = "${aws_subnet.myvpc_private_subnet_two.id}" route_table_id = "${aws_route_table.myvpc_private_subnet_route_table.id}" } #create security group for web resource "aws_security_group" "web_security_group" { name = "web_security_group" description = "Allow all inbound traffic" vpc_id = "${aws_vpc.myvpc.id}" tags { Name = "myvpc_web_security_group" } } #create security group ingress rule for web resource "aws_security_group_rule" "web_ingress" { count = "${length(var.web_ports)}" type = "ingress" protocol = "tcp" cidr_blocks = ["0.0.0.0/0"] from_port = "${element(var.web_ports, count.index)}" to_port = "${element(var.web_ports, count.index)}" security_group_id = "${aws_security_group.web_security_group.id}" } #create security group egress rule for web resource "aws_security_group_rule" "web_egress" { count = "${length(var.web_ports)}" type = "egress" protocol = "tcp" cidr_blocks = ["0.0.0.0/0"] from_port = "${element(var.web_ports, count.index)}" to_port = "${element(var.web_ports, count.index)}" security_group_id = "${aws_security_group.web_security_group.id}" } #create security group for db resource "aws_security_group" "db_security_group" { name = "db_security_group" description = "Allow all inbound traffic" vpc_id = "${aws_vpc.myvpc.id}" tags { Name = "myvpc_db_security_group" } } #create security group ingress rule for db resource "aws_security_group_rule" "db_ingress" { count = "${length(var.db_ports)}" type = "ingress" protocol = "tcp" cidr_blocks = ["0.0.0.0/0"] from_port = "${element(var.db_ports, count.index)}" to_port = "${element(var.db_ports, count.index)}" security_group_id = "${aws_security_group.db_security_group.id}" } #create security group egress rule for db resource "aws_security_group_rule" "db_egress" { count = "${length(var.db_ports)}" type = "egress" protocol = "tcp" cidr_blocks = ["0.0.0.0/0"] from_port = "${element(var.db_ports, count.index)}" to_port = "${element(var.db_ports, count.index)}" security_group_id = "${aws_security_group.db_security_group.id}" } #create EC2 instance resource "aws_instance" "my_web_instance" { ami = "${lookup(var.images,var.region)}" instance_type = "t2.micro" key_name = " vpc_security_group_ids = ["${aws_security_group.web_security_group.id}"] subnet_id = "${aws_subnet.myvpc_public_subnet.id}" tags = { Name = "my_web_instance" } volume_tags = { Name = "my_web_instance_volume" } provisioner "remote-exec" { #install apache, mysql client, php inline = [ "sudo mkdir -p /var/www/html/", "sudo yum update -y", "sudo yum install -y httpd", "sudo service httpd start", "sudo usermod -a -G apache ec2-user", "sudo chown -R ec2-user:apache /var/www", "sudo yum install -y mysql php php-mysql" ] } provisioner "file" { #copy the index file form local to remote source = "index.php" destination = "/var/www/html/index.php" } connection { type = "ssh" user = "ec2-user" password = "" #copy #restrict permission: chmod 400 private_key = "${file("/home/ec2-user/ } } #create aws rds subnet groups resource "aws_db_subnet_group" "my_database_subnet_group" { name = "mydbsg" subnet_ids = ["${aws_subnet.myvpc_private_subnet_one.id}", "${aws_subnet.myvpc_private_subnet_two.id}"] tags = { Name = "my_database_subnet_group" } } #create aws mysql rds instance resource "aws_db_instance" "my_database_instance" { allocated_storage = 20 storage_type = "gp2" engine = "mysql" engine_version = "5.7" instance_class = "db.t2.micro" port = 3306 vpc_security_group_ids = ["${aws_security_group.db_security_group.id}"] db_subnet_group_name = "${aws_db_subnet_group.my_database_subnet_group.name}" name = "mydb" identifier = "mysqldb" username = "myuser" password = "mypassword" parameter_group_name = "default.mysql5.7" skip_final_snapshot = true tags = { Name = "my_database_instance" } } #output webserver and dbserver address output "db_server_address" { value = "${aws_db_instance.my_database_instance.address}" } output "web_server_address" { value = "${aws_instance.my_web_instance.public_dns}" } ----------------------- :wq ## Format code terraform fmt ## Initialize terraform (downloads provider [AWS] packages) terraform init ## Create resource terraform apply |
Copy the db_server_address and web_server_address from the output.
Connect to EC2 instance (web server)
|
1 |
ssh -i "/home/ec2-user/ |
Edit index.php in EC2 instance (web server)
|
1 2 3 4 5 6 |
vi /var/www/html/index.php ---------------------- #change only $link = mysql_connect(' ---------------------- :wq |
|
1 2 3 4 5 6 |
## Connect to mysql rds instance mysql -h #create table and insert data USE mydb; CREATE TABLE counter (visits int(10) NOT NULL); INSERT INTO counter(visits) values(1); |
Open web_server_address in the browser , hit refresh and check
LAMP stack successfully deployed in AWS using terraform.
Note: You may need to restart your web server.
|
1 2 3 4 5 6 7 8 9 10 11 12 |
## Cleanup ## Exit mysql rds instance quit ## Exit EC2 instance (web server) exit ## Destory resources terraform destory ## Remove terraform directory cd .. && rm -rf terraform |
Hope you have enjoyed this article. In the next blog post, we will modularize our LAMP stack code.
To get more details on terraform, please refer below terraform documentation
https://www.terraform.io/docs/index.html
Hi,
thanks for this tutorial.
As I am working through it, I noticed a typo at the end of line 217 – missing quotes.
Regards
Joachim
Dear Joachim,
Thanks for your valuable feedback, I have corrected the missing quotes.
Thanks,
Debjeet
what is the terraform version you are using?
Dear Manjesh,
I am using terraform version 0.11.13 in all our demo.
Thanks,
Debjeet