Category: Azure

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Azure Data Lake Storage Gen1 vs. Gen2

Feature Data Lake Storage Gen1 Data Lake Storage Gen2
Architecture Standalone hierarchical file system Built on Azure Blob Storage with Hierarchical Namespace (HNS)
Performance Slower due to standalone architecture Optimized performance with tiered storage & caching
Security ACLs (Access Control Lists) & RBAC RBAC, ACLs, Azure AD (more granular access control)
Cost Efficiency Higher cost, no tiered storage Lower cost with hot, cool, and archive tiers
Integration Limited compatibility with Azure services Fully compatible with Blob APIs, Synapse, Databricks, Spark
Scalability Limited to single-region storage Globally distributed, supports Geo-redundancy (GRS)
Protocol Support Proprietary protocol, limited interoperability Supports HDFS, Blob APIs, better integration with analytics tools
Availability Regional storage only Supports multi-region & geo-redundant storage
Migration No easy migration to Blob storage Can integrate with Azure Blob Storage, simplifying migration
Support Status Deprecated (support ends Feb 29, 2024) Actively developed & recommended for new workloads
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Update RDP Source IP For Azure Virtual Machine

Remove-Variable * -ErrorAction SilentlyContinue; Remove-Module *; $error.Clear();
$config = @{
	SubscriptionName = "";
	VMName           = ""
}
$myip = (Invoke-WebRequest -uri "http://ifconfig.me/ip").Content
Write-Host "My Public IP is", $myip;

if (-Not(Get-InstalledModule -Name "Az")) { 
	Write-Host "Installing Azure Package from PS Gallery...";
	Install-Module -Name Az -Scope CurrentUser -Repository PSGallery -Force; 
}

if (-Not(Get-Module -Name "Az") -and -Not(Get-Command -Name Get-AZContext)) {
	Write-Host "Importing Azure Module..."
	Import-Module -Name Az -Force; 
}

if (-Not (Get-AZContext)) {
	Write-Host "Connecting to Azure..."
	Connect-AzAccount #-Credential $azCredF
}

if ([bool]((Get-AZContext))) {	Write-Host "Connected to Azure using :", ((Get-AZContext).Account) }
else {	Write-Error "Failed to connect to Azure"; return; }

if (((Get-AZContext).Subscription.Name) -ne $config.SubscriptionName) {
	Write-Host "Switching Subscription Context...";
	(Get-AzSubscription -SubscriptionName $config.SubscriptionName) | 	Set-AzContext | Out-Null;
}
Write-Host "Subscription =", ((Get-AZContext).Subscription.Name);

$vm = Get-AzVM -VMName $config.VMName
Write-Host "Located Azure VM '$($vm.Name)' within '$($vm.ResourceGroupName)' ResourceGroup";

$nic = $vm.NetworkProfile.NetworkInterfaces;
$networkinterface = ($nic.id -split '/')[-1];
$nicdetails = Get-AzNetworkInterface -Name $networkinterface;

$nsg = Get-AzNetworkSecurityGroup -Name (($nicdetails.NetworkSecurityGroup.Id -split '/')[-1]) -ResourceGroupName ($vm.ResourceGroupName)

# $rules = Get-AzNetworkSecurityRuleConfig -NetworkSecurityGroup $networkSecurityGroup
# $rdpRule = $rules  | Where-Object { $_.Protocol -eq 'TCP' -and $_.DestinationPortRange -contains 3389 }

Write-Host "Before Updating public ip";
($nsg.SecurityRules | Where-Object { $_.Name -eq "RDP" }).SourceAddressPrefix

Write-Host ("*" * 10)
($nsg.SecurityRules | Where-Object { $_.Name -eq "RDP" }).SourceAddressPrefix = ([System.String[]] @("xxx.xxx.xxx.xxx", "xxx.xxx.xxx.xxx", $myip))
$nsg | Set-AzNetworkSecurityGroup | Get-AzNetworkSecurityRuleConfig -Name "RDP" | Out-Null

Write-Host "After Updating public ip";
($nsg.SecurityRules | Where-Object { $_.Name -eq "RDP" }).SourceAddressPrefix

Disconnect-AzAccount | Out-Null