Add different solutions to AWS exercises

Not only console solutions, but also Terraform and Pulumi.

In addition, this change fixes issues #279 and #280

Author: abregman

README.md

@@ -2,7 +2,7 @@
 
 :information_source:  This repo contains questions and exercises on various technical topics, sometimes related to DevOps and SRE
 
-:bar_chart:  There are currently **2393** exercises and questions
+:bar_chart:  There are currently **2402** exercises and questions
 
 :books:  To learn more about DevOps and SRE, check the resources in [devops-resources](https://github.com/bregman-arie/devops-resources) repository
 

topics/aws/README.md

@@ -1,7 +1,7 @@
 # AWS
 
 **Note**: Provided solutions are using the AWS console. It's recommended you'll use IaC technologies to solve the exercises (e.g. Terraform, Pulumi).<br>
-**2nd Note**: Some of the exercises cost money and can't be performed using the free tier/resources
+**2nd Note**: Some of the exercises cost $$$ and can't be performed using the free tier/resources
 
 - [AWS](#aws)
   - [Exercises](#exercises)
@@ -15,6 +15,7 @@
     - [Containers](#containers)
     - [Lambda](#lambda)
     - [Elastic Beanstalk](#elastic-beanstalk)
+    - [CodePipeline](#codepipeline)
     - [Misc](#misc)
   - [Questions](#questions)
     - [Global Infrastructure](#global-infrastructure)
@@ -39,6 +40,7 @@
     - [Disaster Recovery](#disaster-recovery)
     - [CloudFront](#cloudfront)
     - [ELB](#elb-1)
+      - [ALB](#alb)
     - [Auto Scaling Group](#auto-scaling-group)
     - [Security](#security-1)
     - [Databases](#databases-1)
@@ -58,6 +60,7 @@
     - [Production Operations and Migrations](#production-operations-and-migrations)
     - [Scenarios](#scenarios)
     - [Architecture Design](#architecture-design)
+    - [Misc](#misc-2)
 
 ## Exercises
 
@@ -1395,15 +1398,17 @@ True. AWS responsible for making sure ELB is operational and takes care of lifec
 </b></details>
 
 <details>
-<summary>Which load balancer would you use for services which use HTTP or HTTPS traffic?</summary><br><b>
+<summary>What's a "listener" in regards to ELB?</summary><br><b>
+</b></details>
 
-Application Load Balancer (ALB).
+<details>
+<summary>What's a "target group" in regards to ELB?</summary><br><b>
 </b></details>
 
 <details>
-<summary>True or False? With ALB (Application Load Balancer) it's possible to do routing based on query string and/or headers</summary><br><b>
+<summary>Which load balancer would you use for services which use HTTP or HTTPS traffic?</summary><br><b>
 
-True.
+Application Load Balancer (ALB).
 </b></details>
 
 <details>
@@ -1440,7 +1445,7 @@ For example, port `2017` and endpoint `/health`.
 
 <details>
 <summary>Which type of AWS load balancer is used in the following drawing?<br>
-<img src="images/aws/identify_load_balancer.png" width="300px;" height="400px;"/>
+<img src="../../images/aws/identify_load_balancer.png"/>
 </summary><br><b>
 
 Application Load Balancer (routing based on different endpoints + HTTP is used).
@@ -1525,12 +1530,6 @@ False. This is only supported in Classic Load Balancer and Application Load Bala
 With cross zone load balancing, traffic distributed evenly across all (registered) instances in all the availability zones.
 </b></details>
 
-<details>
-<summary>True or False? For application load balancer, cross zone load balancing is always on and can't be disabled</summary><br><b>
-
-True
-</b></details>
-
 <details>
 <summary>True or False? For network load balancer, cross zone load balancing is always on and can't be disabled </summary><br><b>
 
@@ -1540,7 +1539,7 @@ False. It's disabled by default
 <details>
 <summary>True or False? In regards to cross zone load balancing, AWS charges you for inter AZ data in network load balancer but no in application load balancer</summary><br><b>
 
-False. It charges fir inter AZ data in network load balancer, but not in application load balancer
+False. It charges for inter AZ data in network load balancer, but not in application load balancer
 </b></details>
 
 <details>
@@ -1555,6 +1554,20 @@ True
 The period of time or process of "draining" instances from requests/traffic (basically let it complete all active connections but don't start new ones) so it can be de-registered eventually and ELB won't send requests/traffic to it anymore.
 </b></details>
 
+#### ALB
+
+<details>
+<summary>True or False? With ALB (Application Load Balancer) it's possible to do routing based on query string and/or headers</summary><br><b>
+
+True.
+</b></details>
+
+<details>
+<summary>True or False? For application load balancer, cross zone load balancing is always on and can't be disabled</summary><br><b>
+
+True
+</b></details>
+
 ### Auto Scaling Group
 
 <details>
@@ -3157,3 +3170,12 @@ Network Load Balancer
 
 You can use an ElastiCache cluster or RDS Read Replicas.
 </b></details>
+
+### Misc
+
+<details>
+<summary>What's an ARN?</summary><br><b>
+
+ARN (Amazon Resources Names) used for uniquely identifying different AWS resources.
+It is used when you would like to identify resource uniqely across all AWS infra.
+</b></details>

topics/aws/exercises/new_vpc/exercise.md

@@ -1,6 +1,11 @@
-## AWS VPC - My First VPC
+# My First VPC
 
-### Objectives
+## Objectives
 
 1. Create a new VPC
-  1. It should have a CIDR that supports using at least 60,000 hosts
+   1. It should have a CIDR that supports using at least 60,000 hosts
+   2. It should be named "exercise-vpc"
+
+## Solution
+
+Click [here](solution.md) to view the solution

topics/aws/exercises/new_vpc/main.tf

@@ -0,0 +1,10 @@
+import pulumi
+import pulumi_awsx as awsx
+
+vpc = awsx.ec2.Vpc("exercise-vpc", cidr_block="10.0.0.0/16")
+
+pulumi.export("vpc_id", vpc.vpc_id)
+pulumi.export("publicSubnetIds", vpc.public_subnet_ids)
+pulumi.export("privateSubnetIds", vpc.private_subnet_ids)
+
+# Run 'pulumi up' to create it

topics/aws/exercises/new_vpc/pulumi/__main__.py

@@ -1,17 +1,30 @@
-## AWS VPC - My First VPC
+# My First VPC
 
-### Objectives
+## Objectives
 
 1. Create a new VPC
-  1. It should have a CIDR that supports using at least 60,000 hosts
+   1.  It should have a CIDR that supports using at least 60,000 hosts
+   2.  It should be named "exercise-vpc"
 
-### Solution
+## Solution
 
-#### Console
+### Console
 
 1. Under "Virtual Private Cloud" click on "Your VPCs"
 2. Click on "Create VPC"
-3. Insert a name (e.g. someVPC)
+3. Insert a name - "exercise-vpc"
 4. Insert IPv4 CIDR block: 10.0.0.0/16
 5. Keep "Tenancy" at Default
 6. Click on "Create VPC"
+
+### Terraform
+
+Click [here](terraform/main.tf) to view the solution
+
+### Pulumi - Python
+
+Click [here](pulumi/__main__.py) to view the solution
+
+### Verify Solution
+
+To verify you've create the VPC, you can run: `aws ec2 describe-vpcs -filters Name=tag:Name,Values=exercise-vpc`

topics/aws/exercises/new_vpc/solution.md

@@ -0,0 +1,11 @@
+resource "aws_vpc" "exercise-vpc" {
+  cidr_block       = "10.0.0.0/16"
+
+  tags = {
+    Name = "exercise-vpc"
+  }
+}
+
+output "vpc-id" {
+  value = aws_vpc.exercise-vpc.id
+}

topics/aws/exercises/new_vpc/terraform/main.tf

@@ -2,7 +2,8 @@
 
 ### Requirements
 
-Single newly created VPC
+1. Single newly created VPC
+2. Region with more than two availability zones
 
 ### Objectives
 

topics/aws/exercises/subnets/exercise.md

@@ -0,0 +1,27 @@
+import pulumi
+import pulumi_aws as aws
+
+availableZones = pulumi_aws.get_availability_zones(state="available")
+
+aws.ec2.Subnet("NewSubnet1",
+    vpc_id=aws_vpc["main"]["id"],
+    cidr_block="10.0.0.0/24",
+    availability_zone=availableZones.names[0],
+    tags={"Name": "NewSubnet1"}
+    )
+
+aws.ec2.Subnet("NewSubnet2",
+    vpc_id=aws_vpc["main"]["id"],
+    cidr_block="10.0.1.0/24",
+    availability_zone=availableZones.names[1]
+    tags={"Name": "NewSubnet2"}
+    )
+
+aws.ec2.Subnet("NewSubnet3",
+    vpc_id=aws_vpc["main"]["id"],
+    cidr_block="10.0.2.0/24",
+    availability_zone=availableZones.names[2]
+    tags={"Name": "NewSubnet3"}
+    )
+
+# Run "pulumi up"

topics/aws/exercises/subnets/pulumi/__main__.py

@@ -1,26 +1,27 @@
-## AWS VPC - Subnets
+# AWS VPC - Subnets
 
-### Requirements
+## Requirements
 
-Single newly created VPC
+1. Single newly created VPC
+2. Region with more than two availability zones
 
-### Objectives
+## Objectives
 
 1. Create a subnet in your newly created VPC
-  1. CIDR: 10.0.0.0/24
-  2. Name: NewSubnet1
+   1. CIDR: 10.0.0.0/24
+   1. Name: NewSubnet1
 2. Create additional subnet
-  1. CIDR: 10.0.1.0/24
-  2. Name: NewSubnet2
-  3. Different AZ compared to previous subnet
+   1. CIDR: 10.0.1.0/24
+   2. Name: NewSubnet2
+   3. Different AZ compared to previous subnet
 3. Create additional subnet
-  1. CIDR: 10.0.2.0/24
-  2. Name: NewSubnet3
-  3. Different AZ compared to previous subnets
+   4. CIDR: 10.0.2.0/24
+   5. Name: NewSubnet3
+   6. Different AZ compared to previous subnets
 
-### Solution
+## Solution
 
-#### Console
+### Console
 
 1. Click on "Subnets" under "Virtual Private Cloud"
 2. Make sure you filter by your newly created VPC (to not see the subnets in all other VPCs). You can do this in the left side menu
@@ -37,3 +38,11 @@ Single newly created VPC
 13. Set the subnet name to "NewSubnet3"
 14. Choose a different AZ
 15. Set CIDR to 10.0.2.0/24
+
+### Terraform
+
+Click [here](terraform/main.tf) to view the solution
+
+### Pulumi - Python
+
+Click [here](pulumi/__main__.py) to view the solution