# GROUP4 - AWS Storage lab
**Snapshot hands on lab**
*Run the following commands with Powershell (aws cli installation required)*

## Init variable

$keyName = "tuannd67"
$sgGroupId = "sg-05306f6795fe2025b"
$subnetId = "subnet-061a0f7fde133b9b8"
$Server1Name = "group4-svr1"
$Server2Name = "group4-svr2"

## Create EC2
### Create server1 with nginx (userdata)

$Server1ID = aws ec2 run-instances `
    --image-id ami-0574da719dca65348 `
    --instance-type t2.micro `
    --key-name $keyName `
    --security-group-ids $sgGroupId `
    --subnet-id $subnetId `
    --tag-specifications "ResourceType=instance,Tags=[{Key=Name,Value=$Server1Name}]" `
    --associate-public-ip-address `
    --query "Instances[0].InstanceId" `
    --user-data file://server1_user_data.txt

#### server1_user_data.txt

#!/bin/bash
sudo apt-get update
sudo apt-get upgrade -y
sudo apt-get install nginx -y
sudo systemctl enable nginx
sudo systemctl start nginx
sudo echo "server 1" > /var/www/html/index.html

### Create server 2 without nginx

$Server2ID = aws ec2 run-instances `
    --image-id ami-0574da719dca65348 `
    --instance-type t2.micro `
    --key-name $keyName `
    --security-group-ids $sgGroupId `
    --subnet-id $subnetId `
    --tag-specifications "ResourceType=instance,Tags=[{Key=Name,Value=$Server2Name}]" `
    --associate-public-ip-address `
    --query "Instances[0].InstanceId"

### Get volume ID of server 1

$Server1DiskID = aws ec2 describe-volumes `
    --filters Name=attachment.instance-id,Values=$Server1ID `
    --query 'Volumes[0].VolumeId'

### Get Volume ID of server 2

$Server2DiskID = aws ec2 describe-volumes `
    --filters Name=attachment.instance-id,Values=$Server2ID `
    --query 'Volumes[0].VolumeId'

### Stop Server2 to detach volume

aws ec2 stop-instances --instance-ids $Server2ID

### Detach volume of Server2

aws ec2 detach-volume --volume-id $Server2DiskID

## Create snapshot for server1's volume

$Server1DiskSnapshotID = aws ec2 create-snapshot `
    --volume-id $Server1DiskID `
    --description "This is snapshot of $Server1Name" `
    --tag-specifications "ResourceType=snapshot,Tags=[{Key=Name,Value=$Server1Name`-snapshot`}]" `
    --query 'SnapshotId'

### Get status snapshot
waiting....

aws ec2 describe-snapshots `
    --snapshot-ids $Server1DiskSnapshotID `
    --query "Snapshots[0].State"

## Create new volume from snapshot

$NewDiskId = aws ec2 create-volume `
    --volume-type gp2 --size 8 `
    --availability-zone us-east-1a `
    --snapshot-id $Server1DiskSnapshotID `
    --tag-specifications "ResourceType=volume,Tags=[{Key=Name,Value=group4-new-disk}]" `
    --query VolumeId

## Attach new volume to Server 2

aws ec2 attach-volume `
    --volume-id $NewDiskId `
    --instance-id $Server2ID `
    --device "/dev/sda1"

## start server 2

aws ec2 start-instances --instance-ids $Server2ID

## Testing
### Get Ip address of server

$Server1Ip = aws ec2 describe-instances `
    --instance-ids $Server1ID `
    --query "Reservations[*].Instances[].PublicIpAddress | [0]"

$Server2Ip = aws ec2 describe-instances `
    --instance-ids $Server2ID `
    --query "Reservations[*].Instances[].PublicIpAddress | [0]"

### Open ip of server2 in browser

Start-Process -FilePath Chrome -ArgumentList "--new-tab http://$Server1Ip"
Start-Process -FilePath Chrome -ArgumentList "--new-tab http://$Server2Ip"

### SSH

ssh -i $keyName'.pem' ubuntu@$Server1Ip
ssh -i $keyName'.pem' ubuntu@$Server2Ip

# Clean up

aws ec2 terminate-instances --instance-ids $Server1ID
aws ec2 terminate-instances --instance-ids $Server2ID
aws ec2 delete-volume --volume-id $NewDiskId
aws ec2 delete-snapshot --snapshot-id $Server1DiskSnapshotID