Powershell Script to Amend ASG values - AWS Cloud

<#  
.SYNOPSIS  
Amend ASG for updating & reverting Values. ASGs will be read through file

.FILE NAME
SetASGtoZero.ps1
#>

clear

Set-ExecutionPolicy Unrestricted
Set-DefaultAWSRegion -Region {Specify the region}
Set-AWSCredentials –AccessKey {Specify the Access Key} –SecretKey {Specify the Secret Key}
Import-Module 'C:\Program Files (x86)\AWS Tools\PowerShell\AWSPowerShell\AWSPowerShell.psd1'; Initialize-AWSDefaults

$scriptDir = Split-Path -Parent $MyInvocation.MyCommand.Path

$Asg_LCGFilePath = $scriptDir + "\ASG.txt"
$logOrigPath = $scriptDir + "\" + "Log_Orig.txt"
$logFilePath = $scriptDir + "\" + "Log.txt"

try
{
    $AutoScalingGroups = Get-Content $Asg_LCGFilePath

    foreach($AutoScalingGroup in $AutoScalingGroups)
    {
        $AutoScalingGroupDetails = Get-ASAutoScalingGroup -AutoScalingGroupName $AutoScalingGroup 
        $AutoScalingGroup + "#" + $AutoScalingGroupDetails.MinSize + "#" + $AutoScalingGroupDetails.DesiredCapacity >> $logOrigPath
        Update-ASAutoScalingGroup -AutoScalingGroupName $AutoScalingGroup -MinSize 0 -DesiredCapacity 0
    }
}

catch 
{
$originalException = $_.Exception 
try
{
"Error: " + $originalException.Message >> $logFilePath
}
catch
{ 
"Original Error: " + $originalException.Message >> $logFilePath
"Logging Error:" + $_.Exception.Message >> $logFilePath
}

    Exit 1
}

<#  
.SYNOPSIS  
Amend ASG for updating & reverting Values. ASGs will be read through file

.FILE NAME
RevertASG.ps1
#>

clear

Set-ExecutionPolicy Unrestricted
Set-DefaultAWSRegion -Region {Specify the region}
Set-AWSCredentials –AccessKey {Specify the Access Key} –SecretKey {Specify the Secret Key}
Import-Module 'C:\Program Files (x86)\AWS Tools\PowerShell\AWSPowerShell\AWSPowerShell.psd1'; Initialize-AWSDefaults

$scriptDir = Split-Path -Parent $MyInvocation.MyCommand.Path

$logOrigPath = $scriptDir + "\" + "Log_Orig.txt"
$logZeroPath = $scriptDir + "\" + "Log_Zero.txt"
$logFilePath = $scriptDir + "\" + "Log.txt"

try
{
    $OriginalASGValues = Get-Content $logOrigPath

    foreach($OriginalASGVal in $OriginalASGValues)
    {
        $AutoScalingGroupName = $OriginalASGVal.Split("#")[0]
        $MinVal = $OriginalASGVal.Split("#")[1]
        $DesVal = $OriginalASGVal.Split("#")[2]
        "Values are:" + $AutoScalingGroupName + " " + $MinVal + " " + $DesVal >> $logZeroPath
        Update-ASAutoScalingGroup -AutoScalingGroupName $AutoScalingGroupName -MinSize $MinVal -DesiredCapacity $DesVal >> $logZeroPath
    }
}

catch 
{
$originalException = $_.Exception 
try
{
"Error: " + $originalException.Message >> $logFilePath
}
catch
{ 
"Original Error: " + $originalException.Message >> $logFilePath
"Logging Error:" + $_.Exception.Message >> $logFilePath
}

    Exit 1
}

Powershell Script to add Notification for all ASGs - AWS Cloud

<#  
.SYNOPSIS  
Script to add Notification for all ASGs

FILE NAME
AddNotifASG.ps1
#>

$scriptDir = Split-Path -Parent $MyInvocation.MyCommand.Path
$CommonFilePath = $scriptDir + "\AWSCredentials.ps1"
. $CommonFilePath


$Environment = "PROD"

$AutoScalingGroupName=""

try
{
   $AutoScalingGroups = (Get-ASAutoScalingGroup | Where-Object -FilterScript {
                        $_.Tags | Where-Object {
                                ($_.Key -eq "Environment" -and $_.Value -eq $Environment)
                                }             
                            }) 

    foreach($AutoScalingGroup in $AutoScalingGroups)
    {
        $AutoScalingGroupName = $AutoScalingGroup.AutoScalingGroupName
        Write-ASNotificationConfiguration -AutoScalingGroupName $AutoScalingGroupName -NotificationType @("autoscaling:EC2_INSTANCE_LAUNCH", "autoscaling:EC2_INSTANCE_TERMINATE") -TopicARN "{Specify the ARN Value here}"
    }

}

catch 
{
$originalException = $_.Exception 
try
{
"Error: " + $originalException.Message
}
catch
{ 
"Original Error: " + $originalException.Message
"Logging Error:" + $_.Exception.Message
}

    Exit 1
}

Powershell Script to Remove Tags for ASG and associated instances - AWS Cloud

<#  

.SYNOPSIS  

Script to Remove Tags for ASG and associated instances by reading the ASG's from file

.FILE NAME

RemoveTags.ps1

#>

clear

$scriptDir = Split-Path -Parent $MyInvocation.MyCommand.Path

$Asg_FilePath = $scriptDir + "\ASG.txt"

$AutoScalingGroups = Get-Content $Asg_FilePath

foreach($AutoScalingGroup in $AutoScalingGroups)

{

    $Tag = New-Object Amazon.AutoScaling.Model.Tag

    $Tag.ResourceId = $AutoScalingGroup

    $Tag.ResourceType = "auto-scaling-group"

    $Tag.Key = "{Specify the Tag Key}"

    Remove-ASTag -Tag $Tag -Force

    "Removed Tag for ASG " + $AutoScalingGroup

    $Instances = (Get-ASAutoScalingGroup -AutoScalingGroupName $AutoScalingGroup).Instances

    foreach ($Instance in $Instances)

    {

        $tag = New-Object Amazon.EC2.Model.Tag

        $tag.Key = "{Specify the Tag Key}"

        Remove-EC2Tag -Resource $Instance.InstanceId -tag $tag -Force

        "Removed Tag for Instance " + $Instance.InstanceId

    }

}

Powershell Script to retrieve Instances Status under ELB associated with ASG - AWS Cloud

<#  
.SYNOPSIS  
Script to retrieve Instances and their status under ELB aligned to ASG. Import the credentials file in the same script

.FILE NAME
LBChecks.ps1
#>

clear

$scriptDir = Split-Path -Parent $MyInvocation.MyCommand.Path

$CommonFilePath = $scriptDir + "\AWSCredentials.ps1"
. $CommonFilePath

$file = $scriptDir + "\" + "Details-" + (Get-Date).tostring("dd-MM-yyyy-HH-mm-ss") + ".txt"

try
{
    $Environment = "PROD"
    
    $AutoScalingGroups = (Get-ASAutoScalingGroup | Where-Object -FilterScript {
                        $_.Tags | Where-Object {
                                ($_.Key -eq "Environment" -and $_.Value -eq $Environment)
                                }
                            }) 

    foreach($AutoScalingGroup in $AutoScalingGroups)
    {

        $ELBs = $AutoScalingGroup.LoadBalancerNames

        foreach ($elb in $ELBs)
        {
            $LBDetails = Get-ELBLoadBalancer -LoadBalancerName $elb
            foreach($Instance in $LBDetails.Instances)
            {
                $InstanceHealth = Get-ELBInstanceHealth -LoadBalancerName $elb -Instance $Instance
                $InstAvailZ = (Get-EC2InstanceStatus -InstanceId $Instance.InstanceId).AvailabilityZone
                
                if($InstanceHealth.State -eq "OutOfService")
                    { 
                     $Message = $AutoScalingGroup.AutoScalingGroupName + " || " + $Instance.InstanceId + " || " + $elb + " || " + $InstAvailZ + " || state is " + $InstanceHealth.State
                     Write-Host $Message -ForegroundColor Red
                    }
                else 
                    {
                    $Message = $AutoScalingGroup.AutoScalingGroupName + " || " + $Instance.InstanceId + " || " + $elb + " || " + $InstAvailZ + " || state is " + $InstanceHealth.State
                    Write-Host $Message -ForegroundColor Green
                    $Message >> $file
                    }
            }
        }

    }
}

catch 
{
$originalException = $_.Exception 
try
{
"Error: " + $originalException.Message
}
catch
{ 
"Original Error: " + $originalException.Message 
"Logging Error:" + $_.Exception.Message
}

    Exit 1
}