Added docker compose for jenkins container.

.gitignore

@@ -0,0 +1,8 @@
+aws-cli-config.txt
+*terraform.tfstate
+*terraform.tfstate.backup
+*terraform.tfvars
+
+################
+
+**/.terraform*

Docker/docker-compose.yaml

@@ -0,0 +1,15 @@
+services:
+  nginx:
+   image: nginx:stable-perl
+   container_name: nginx
+   restart: no
+   ports:
+     - "8080:80"
+   environment:
+     - NGINX_PORT=80
+   networks:
+     - nginx
+
+networks:
+  nginx:
+    driver: bridge

Jenkins/docker-compose.yaml

@@ -0,0 +1,23 @@
+services:
+  jenkins:
+    image: jenkins/jenkins:lts-jdk17
+    container_name: jenkins
+    restart: no
+    user: "1000:1000"
+    security_opt:
+      - no-new-privileges=true
+    volumes:
+      - "jenkins_home:/var/jenkins_home"
+    ports:
+      - 8080:8080
+      - 50000:50000
+    networks:
+      - jenkins-ntwk
+
+volumes:
+  jenkins_home:
+    external: true
+
+networks:
+  jenkins-ntwk:
+    driver: bridge

Terraform/VPC/main.tf

@@ -0,0 +1,40 @@
+provider "aws" {
+  region = "ap-south-1"
+}
+
+# VPC
+resource "aws_vpc" "TestVPC" {           # Create a VPC
+  cidr_block           = "172.16.0.0/16" # Specify CIDR block (IP range)
+  enable_dns_support   = true            # DNS support
+  enable_dns_hostnames = true            # Hostname support
+  tags = {
+    Name = "TestVPC" # Name for VPC (on AWS)
+  }
+}
+
+# Subnet -> Associated w/ TestVPC
+resource "aws_subnet" "TestSubnetOne" {  # Create subnet
+  vpc_id            = aws_vpc.TestVPC.id # Specify VPC under which subnet should be created
+  cidr_block        = "172.16.1.0/24"    # Specify segment of IP range (from VPC) for this subnet
+  availability_zone = "ap-south-1a"      # Set availability zone
+  tags = {
+    Name = "TestSubnet1" # Name for subnet (on AWS)
+  }
+}
+
+# Internet gateway
+# Route table
+# |_ Route
+# |_ Table association
+
+# EC2 under TestVPC in TestSubnet1 IP
+resource "aws_instance" "name" {
+  ami           = "ami-0861f4e788f5069dd"
+  instance_type = "t2.micro"
+  key_name      = "kshitij-personal-ed25519"
+  subnet_id     = aws_subnet.TestSubnetOne.id
+
+  tags = {
+    Name = "EC2-TestSubnet1"
+  }
+}

Terraform/main.tf

@@ -5,31 +5,50 @@ provider "aws" {
 # EC2 instance
 resource "aws_instance" "ec2_t2-micro" {
   ami                         = "ami-0861f4e788f5069dd"                  # Amazon Linux
-  instance_type               = "t2.micro"
-  key_name                    = "kshitij-personal-ed25519"
-  subnet_id                   = "subnet-0f2515644bbe8e603"
-  associate_public_ip_address = true
-  vpc_security_group_ids      = [aws_security_group.ec2_ssh_security.id]
+  instance_type               = "t2.micro"                               # Instance type
+  key_name                    = "kshitij-personal-ed25519"               # SSH keys
+  subnet_id                   = "subnet-0f2515644bbe8e603"               # VPC -> Subnet ID
+  associate_public_ip_address = true                                     # Public IP for SSH
+  vpc_security_group_ids      = [aws_security_group.ec2_ssh_security.id] # VPC security group
 
   tags = {
-    Name = "Test-EC2"
+    Name = "Test-EC2" # Instance name
   }
 }
 
 # Security group (firewall) for allowing incoming SSH connections
 resource "aws_security_group" "ec2_ssh_security" {
-  name = "allow_ssh"
+  name = "allow_ssh" # Firewall rule name
 
   ingress {
-    from_port   = 22
-    to_port     = 22
-    protocol    = "tcp"
-    cidr_blocks = ["${var.ssh_ingress}"]
+    # Ingress rules (incoming)
+    from_port   = 22                     # Starting port range
+    to_port     = 22                     # End port range
+    protocol    = "tcp"                  # Allowed protocol
+    cidr_blocks = ["${var.ssh_ingress}"] # Allowed IP ranges
   }
   egress {
-    from_port   = 0
-    to_port     = 0
-    protocol    = -1
-    cidr_blocks = ["0.0.0.0/0"]
+    from_port   = 0             # Starting port range; 0 implies all ports
+    to_port     = 0             # End port range; 0 implies all ports
+    protocol    = -1            # Allowed protocol; -1 implies all protocols (in HCL)
+    cidr_blocks = ["0.0.0.0/0"] # Allowed IP ranges
   }
+  # For each protocol, new block; eg. egress { from... to... protocol = "icmp" cidr...}
+}
+
+# DynamoDB Table
+resource "aws_dynamodb_table" "dynamo-test" {
+  name           = "testTable"   # Table name
+  billing_mode   = "PROVISIONED" # Specify billing type; PROVISIONED (provisioned billing mode) / PAY_PER_REQUEST (on-demand billing mode)
+  read_capacity  = 1             # no. of reads per sec.
+  write_capacity = 1             # no. of writes per sec.
+
+  # Attribute
+  attribute {
+    name = "username" # Col. name
+    type = "S"        # Col. type;
+    # S -> String, N -> Number, B -> Binary, BOOL -> Boolean, List -> L (ordered collection of values), Map ->M (key-value pairs), Null -> NULL
+  }
+
+  hash_key = "username" # Primary key
 }

Terraform/terra-ec2/main.tf

@@ -0,0 +1,33 @@
+provider "aws" {
+  region = "ap-south-1"
+}
+
+resource "aws_instance" "terra-ec2" {
+  ami                         = "ami-0861f4e788f5069dd"
+  instance_type               = "t2.micro"
+  key_name                    = "kshitij-personal-ed25519"
+  subnet_id                   = "subnet-0f2515644bbe8e603"
+  associate_public_ip_address = true
+  vpc_security_group_ids      = [aws_security_group.allow_ssh_terra-ec2.id]
+
+  tags = {
+    name = "terra-ec2"
+  }
+}
+
+resource "aws_security_group" "allow_ssh_terra-ec2" {
+  name = "allow_ssh_terra-ec2"
+
+  ingress {
+    from_port   = 22
+    to_port     = 22
+    protocol    = "tcp"
+    cidr_blocks = ["${var.internal_ip}", "${var.personal_ip}"]
+  }
+  egress {
+    from_port   = 0
+    to_port     = 0
+    protocol    = -1
+    cidr_blocks = ["0.0.0.0/0"]
+  }
+}

Terraform/terra-ec2/variables.tf

@@ -0,0 +1,9 @@
+variable "internal_ip" {
+  description = "Internal IP allowing SSH access to terra-ec2"
+  type        = string
+}
+
+variable "personal_ip" {
+  description = "Personal IP allowing SSH access to terra-ec2"
+  type        = string
+}

boto3/describe_ec2.py

@@ -0,0 +1,8 @@
+import boto3
+
+session = boto3.Session (region_name = "ap-south-1")
+
+ec2_instances = session.resource('ec2').instances.all()
+
+for instance in ec2_instances:
+    print(f"ID: {instance.id}, State: {instance.state['Name']}, Type: {instance.instance_type}, Public IP: {instance.public_ip_address}")