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MigrationFromNsgToAzureFlowLogging.ps1
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MigrationFromNsgToAzureFlowLogging.ps1
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#// Copyright (c) Microsoft Corporation.
#// Licensed under the MIT license.
#region Globals
$flowlogCount = @{"count" = 0}
$subscriptionId = ''
$region = ''
$startTime = ''
$reportFileName = 'AnalysisReport.html'
$configPath = '.\RegionSubscriptionConfig.json'
$htmlSartingContent = @"
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>Analysis report for nsg to vnet flowlogs</title>
<link href="https://cdn.jsdelivr.net/npm/bootstrap@5.0.2/dist/css/bootstrap.min.css" rel="stylesheet">
<script src="https://cdn.jsdelivr.net/npm/bootstrap@5.0.2/dist/js/bootstrap.bundle.min.js"></script>
<style>
.table-striped > tbody > tr:nth-child(2n+1) > td, .table-striped > tbody > tr:nth-child(2n+1) > th {
background-color: #cce6ff;
}
.bg-primary
{
background-color: #0000ff;
}
hr.rounded {
border-top: 3px solid #0000ff;
border-radius: 5px;
}
html {
overflow-y: scroll;
overflow-x: scroll;
}
</style>
</head>
<body>
"@
$htmlNavTabContent = @"
<div class='card m-3'>
<ul class="nav nav-pills mb-3 nav-justified" id="pills-tab" role="tablist">
<li class="nav-item" role="presentation">
<button class="nav-link active" id="pills-fllist-tab" data-bs-toggle="pill" data-bs-target="#pills-fllist" type="button" role="tab" aria-controls="pills-fllist" aria-selected="true">List of flowlogs</button>
</li>
<li class="nav-item" role="presentation">
<button class="nav-link" id="pills-analysis-tab" data-bs-toggle="pill" data-bs-target="#pills-analysis" type="button" role="tab" aria-controls="pills-analysis" aria-selected="false">Analysis Report</button>
</li>
<li class="nav-item" role="presentation">
<button class="nav-link" id="pills-migration-tab" data-bs-toggle="pill" data-bs-target="#pills-migration" type="button" role="tab" aria-controls="pills-migration" aria-selected="false">Migration</button>
</li>
<li class="nav-item" role="presentation">
<button class="nav-link" id="pills-rollback-tab" data-bs-toggle="pill" data-bs-target="#pills-rollback" type="button" role="tab" aria-controls="pills-rollback" aria-selected="false">Rollback</button>
</li>
</ul>
<div class="tab-content card" id="pills-tabContent">
"@
$htmlEndingContent = @"
</body>
</html>
"@
$htmlEndingContentWithRollback = @"
<div class='tab-pane fade show active' id='pills-rollback' role='tabpanel' aria-labelledby='pills-rollback-tab'>
<div class="alert alert-info">This tab has logs related to rollback process like which flowlog is being deleted/enabled</div>
<table class='table table-striped table-bordered'>
<colgroup><col/><col/></colgroup>
<thead class='bg-primary text-white text-center'>
</thead>
</table>
</div>
"@
$htmlEndingContentWithMigrationAndRollback = @"
<div class='tab-pane fade show active' id='pills-migration' role='tabpanel' aria-labelledby='pills-migration-tab'>
<div class="alert alert-info">This tab has logs related to migration process, like which flowlog is being created/disabled</div>
<table class='table table-striped table-bordered'>
<colgroup><col/><col/></colgroup>
<thead class='bg-primary text-white text-center'>
</thead>
</table>
</div>
<div class='tab-pane fade show active' id='pills-rollback' role='tabpanel' aria-labelledby='pills-rollback-tab'>
<div class="alert alert-info">This tab has logs related to rollback process, like which flowlog is being deleted/enabled</div>
<table class='table table-striped table-bordered'>
<colgroup><col/><col/></colgroup>
<thead class='bg-primary text-white text-center'>
</thead>
</div>
"@
$htmlTabHeader = @"
<div class='tab-pane fade show active' id='#tabId#' role='tabpanel' aria-labelledby='#tabId#-tab'>
<div class="alert alert-info">#message#</div>
<table class='table table-striped table-bordered'>
<colgroup><col/><col/></colgroup>
<thead class='bg-primary text-white text-center'>
"@
$htmlNewTable = @"
<table class='table table-striped table-bordered'>
<colgroup><col/><col/></colgroup>
<thead class='bg-primary text-white text-center'>
"@
$mutex = $null
$numOfThreads = 16
#endregion
#region Print_Utilities
function Print-FlowLog($fl)
{
Write-Host "Flowlog settings:"
Write-Host $fl.Name
Write-Host $fl.Enabled
Write-Host $fl.StorageId
if ($null -ne $fl.FlowAnalyticsConfiguration.NetworkWatcherFlowAnalyticsConfiguration)
{
$fl.FlowAnalyticsConfiguration.NetworkWatcherFlowAnalyticsConfiguration.Enabled
$fl.FlowAnalyticsConfiguration.NetworkWatcherFlowAnalyticsConfiguration.TrafficAnalyticsInterval
$fl.FlowAnalyticsConfiguration.NetworkWatcherFlowAnalyticsConfiguration.WorkspaceId
$fl.FlowAnalyticsConfiguration.NetworkWatcherFlowAnalyticsConfiguration.WorkspaceRegion
$fl.FlowAnalyticsConfiguration.NetworkWatcherFlowAnalyticsConfiguration.WorkspaceResourceId
}
}
function Print-ProcessedFlowlogInfo($flName, $resourceId)
{
Write-Host "Processing flowlog: " -NoNewLine -ForeGroundColor Blue
Write-Host $flName -NoNewLine
Write-Host " Associated to resource: " -NoNewLine -ForeGroundColor Blue
Write-Host $resourceId
}
$printProcessedFlowlogInfoStr = ${function:Print-ProcessedFlowlogInfo}.ToString()
function Print-FlowLogs($flList)
{
[System.Collections.ArrayList]$data = @()
($htmlTabHeader.replace("#tabId#", 'pills-fllist')).replace("#message#", "$(Get-Date) This tab has list of flowlogs in given subscription and region") | Out-File $reportFileName -Append
@"
<tr><th>FlowLogResourceId</th><th>TargetResourceId</th></tr>
</thead>
"@ | Out-File $reportFileName -Append
$flList | ForEach-Object -ThrottleLimit $numOfThreads -Parallel {
[void]($using:mutex).WaitOne()
$fl = $_
try
{
[void]($using:data).Add([PSCustomObject]@{
FlowLogResourceId = $fl.Id
TargetResourceId = $fl.TargetResourceId
})
"<tr><td>" + $fl.Id + "</td><td>" + $fl.TargetResourceId + "</td></tr>" | Out-File $using:reportFileName -Append
}
finally
{
($using:mutex).ReleaseMutex()
}
}
Get-Job | Wait-Job
Write-Host ""
Write-Host "$(Get-Date) List of flowlogs in subscription" $subscriptionId "in region" $region -ForeGroundColor Blue
$data | Format-Table -AutoSize -Wrap
@"
</table>
</div>
"@ | Out-File $reportFileName -Append
}
#endregion
#region Compare_Utilites
function Compare-Output($createFlowlogTragetList, $disabledFlList, $expectedCreatedFlowLogs, $printLogs)
{
if ($disabledFlList.Count -ne $expectedDisabledTargetFlMap.Count)
{
if ($printLogs)
{
Write-Host "Disable list don't match" $disabledFlList.Count $expectedDisabledTargetFlMap.Count -ForeGroundColor Red
}
foreach($targetId in $disabledFlList.Keys)
{
Write-Host $targetId $disabledFlList[$targetId].Name -ForeGroundColor Red
}
return $false
}
if ($createFlowlogTragetList.Count -ne $expectedCreatedFlowLogs.Count)
{
if ($printLogs)
{
Write-Host "created list don't match" $createFlowlogTragetList.Count $expectedCreatedFlowLogs.Count -ForeGroundColor Red
}
return $false
}
foreach($targetId in $disabledFlList.Keys)
{
if($expectedDisabledTargetFlMap.Contains($targetId) -eq $false -or $expectedDisabledTargetFlMap[$targetId] -ne $disabledFlList[$targetId].Name)
{
if ($printLogs)
{
Write-host "Not matching flowlog, existing:" $targetId $disabledFlList[$targetId].Name "expected:" $expectedDisabledTargetFlMap[$targetId] -ForeGroundColor Red
}
return $false
}
}
foreach($targetId in $createFlowlogTragetList.Keys)
{
if($expectedCreatedFlowLogs.ContainsKey($targetId) -eq $false -or $expectedCreatedFlowLogs[$targetId].Contains($createFlowlogTragetList[$targetId].Name) -eq $false)
{
if ($printLogs)
{
Write-host "Not matching, existing:" $targetId $createFlowlogTragetList[$targetId].Name "expected:" $expectedCreatedFlowLogs[$targetId] -ForeGroundColor Red
}
return $false
}
}
return $true
}
function Compare-FlowLogSetting($expected, $found, $printLogs)
{
if ($expected.Enabled -ne $found.Enabled -or $expected.StorageId -ne $found.StorageId)
{
if ($printLogs)
{
Write-Host "Either enabled state or storage id is not same for flowlogs" -ForeGroundColor Yellow
}
return $false
}
if ($expected.RetentionPolicy.Enabled -ne $found.RetentionPolicy.Enabled -or $expected.RetentionPolicy.Days -ne $found.RetentionPolicy.Days)
{
if ($printLogs)
{
Write-Host "Retention policy is not same for flowlogs" -ForeGroundColor Yellow
}
return $false
}
if ((-not $expected.FlowAnalyticsConfiguration.NetworkWatcherFlowAnalyticsConfiguration.workspaceId) -and (-not $found.FlowAnalyticsConfiguration.NetworkWatcherFlowAnalyticsConfiguration.workspaceId))
{
return $true
}
if ((-not $expected.FlowAnalyticsConfiguration.NetworkWatcherFlowAnalyticsConfiguration.workspaceId) -or (-not $found.FlowAnalyticsConfiguration.NetworkWatcherFlowAnalyticsConfiguration.workspaceId))
{
if ($printLogs)
{
Write-Host "TA config is not same for flowlogs" -ForeGroundColor Yellow
}
return $false
}
if ($expected.FlowAnalyticsConfiguration.NetworkWatcherFlowAnalyticsConfiguration.enabled -ne $found.FlowAnalyticsConfiguration.NetworkWatcherFlowAnalyticsConfiguration.enabled -or
$expected.FlowAnalyticsConfiguration.NetworkWatcherFlowAnalyticsConfiguration.workspaceId -ne $found.FlowAnalyticsConfiguration.NetworkWatcherFlowAnalyticsConfiguration.workspaceId -or $expected.FlowAnalyticsConfiguration.NetworkWatcherFlowAnalyticsConfiguration.trafficAnalyticsInterval -ne $found.FlowAnalyticsConfiguration.NetworkWatcherFlowAnalyticsConfiguration.trafficAnalyticsInterval)
{
if ($printLogs)
{
Write-Host "TA config is not same for flowlogs" -ForeGroundColor Yellow
}
return $false
}
return $true
}
$compareFlowLogSettingStr = ${function:Compare-FlowLogSetting}.ToString()
function Compare-CreatedFlowLogSettings($expected, $found, $taregtId)
{
if ($null -eq $found)
{
Write-Host "Created resource not found, check if some error during creation" -ForeGroundColor Red
return $false
}
if ($found.ProvisioningState -ne 'Succeeded')
{
Write-Host "Unexpected provisioning state:" $found.ProvisioningState -ForeGroundColor Red
return $false
}
if ($found.TargetResourceId -ne $taregtId)
{
Write-Host "Incorrect targetId. Expected:" $taregtId "Found:" $found.TargetResourceId -ForeGroundColor Red
return $false
}
$isSettingsSame = Compare-FlowLogSetting $expected $found $false
if ($isSettingsSame -eq $false)
{
Write-Host "Incorrect settings of flowlog" -ForeGroundColor Red
Print-FlowLog $expected
Print-FlowLog $found
return $false
}
return $true
}
#endregion
#region Flowlog_CRUD
function Create-FlowLog($targetId, $flSettings, $createdVnetFlowlogs, $targetEtagMap, $mutex, $reportFileName)
{
$targetResource = Get-AzResource -ResourceId $targetId
if ($null -eq $targetResource)
{
Write-Host "Null target resource"
return $false
}
if ($targetResource.ResourceType -eq 'Microsoft.Network/virtualNetworks/subnets')
{
$components = $targetId.Split('/')
$vnetName = $components[8]
$flName = $targetResource.Name + '-' + $vnetName + '-' + $targetResource.ResourceGroupName + '-flowlog'
$flName = $flName.Substring(0, [math]::Min(80, $flName.Length)) #truncating flowlog to size 80 as resources can have name of maximum size 80
}
else
{
$flName = $targetResource.Name + '-' + $targetResource.ResourceGroupName + '-flowlog'
$flName = $flName.Substring(0, [math]::Min(80, $flName.Length)) #truncating flowlog to size 80 as resources can have name of maximum size 80
}
if (($null -eq $flSettings.FlowAnalyticsConfiguration.NetworkWatcherFlowAnalyticsConfiguration) -or (-not $flSettings.FlowAnalyticsConfiguration.NetworkWatcherFlowAnalyticsConfiguration.WorkspaceResourceId))
{
Set-AzNetworkWatcherFlowLog -Location $flSettings.Location -Name $flName -TargetResourceId $targetId -StorageId $flSettings.StorageId -Enabled $flSettings.Enabled -EnableRetention $flSettings.RetentionPolicy.Enabled -RetentionPolicyDays $flSettings.RetentionPolicy.Days -FormatType $flSettings.Format.Type -FormatVersion $flSettings.Format.Version -Force
Start-Sleep -Seconds 10
$fl = Get-AzNetworkWatcherFlowLog -Location $flSettings.Location -Name $flName
$isExpectedFl = Compare-CreatedFlowLogSettings $flSettings $fl $targetId
$mutex.WaitOne()
try
{
if ($null -ne $fl)
{
[void]$createdVnetFlowlogs.Add($fl)
}
if ($isExpectedFl -eq $false)
{
Write-Host "Creation of a flowlog" $flName "failed" -ForeGroundColor Red
Write-Host "Continuing with creation of rest of flowlogs" -ForeGroundColor Blue
("<li class='list-group-item list-group-item-danger'>$(Get-Date) Creation of a flowlog" + $flName + "failed</li>") | Out-File $using:reportFileName -Append
return $false
}
}
finally
{
$mutex.ReleaseMutex()
}
}
else
{
Set-AzNetworkWatcherFlowLog -Location $flSettings.Location -Name $flName -TargetResourceId $targetId -StorageId $flSettings.StorageId -Enabled $flSettings.Enabled -EnableRetention $flSettings.RetentionPolicy.Enabled -RetentionPolicyDays $flSettings.RetentionPolicy.Days -FormatType $flSettings.Format.Type -FormatVersion $flSettings.Format.Version -EnableTrafficAnalytics:$flSettings.FlowAnalyticsConfiguration.NetworkWatcherFlowAnalyticsConfiguration.Enabled -TrafficAnalyticsWorkspaceId $flSettings.FlowAnalyticsConfiguration.NetworkWatcherFlowAnalyticsConfiguration.WorkspaceResourceId -TrafficAnalyticsInterval $flSettings.FlowAnalyticsConfiguration.NetworkWatcherFlowAnalyticsConfiguration.TrafficAnalyticsInterval -Force
Start-Sleep -Seconds 10
$fl = Get-AzNetworkWatcherFlowLog -Location $flSettings.Location -Name $flName
$isExpectedFl = Compare-CreatedFlowLogSettings $flSettings $fl $targetId
$mutex.WaitOne()
try
{
if ($null -ne $fl)
{
[void]$createdVnetFlowlogs.Add($fl)
}
if ($isExpectedFl -eq $false)
{
Write-Host "Creation of a flowlog" $flName "failed" -ForeGroundColor Red
Write-Host "Continuing with creation of rest of flowlogs" -ForeGroundColor Blue
("<li class='list-group-item list-group-item-danger'>$(Get-Date) Creation of a flowlog" + $flName + "failed</li>") | Out-File $using:reportFileName -Append
return $false
}
}
finally
{
$mutex.ReleaseMutex()
}
}
$mutex.WaitOne()
try
{
Write-Host "Created flowlog:" $fl.Name "with target:" $fl.TargetResourceId -ForeGroundColor Green
("<li class='list-group-item list-group-item-success'>$(Get-Date) Created flowlog:" + $fl.Name + "with target:" + $fl.TargetResourceId + "</li>") | Out-File $reportFileName -Append
}
finally
{
$mutex.ReleaseMutex()
}
return $true
}
$createFlowLogStr = ${function:Create-FlowLog}.ToString()
function CreateAggregated-Flowlogs($createFlowlogTragetList, $disabledFlList, $createdVnetFlowlogs)
{
($htmlTabHeader.replace("#tabId#", 'pills-migration')).replace("#message#", "$(Get-Date) This tab has logs related to migration process, like which flowlog is being created/disabled") | Out-File $reportFileName -Append
"</table><ul class='list-group'>" | Out-File $reportFileName -Append
$allSucceeded = @{"success" = $true}
$createFlowlogTragetList.Keys | ForEach-Object -ThrottleLimit $numOfThreads -Parallel {
$targetId = $_
${function:Create-FlowLog} = $using:createFlowLogStr
${function:Compare-CreatedFlowLogSettings} = $using:compareFlowLogSettingStr
$flSettings = ($using:createFlowlogTragetList)[$targetId]
($using:allSucceeded).success = (Create-FlowLog $targetId $flSettings $using:createdVnetFlowlogs @{} $using:mutex $using:reportFileName) -and ($using:allSucceeded).success
}
Get-Job | Wait-Job
$allSucceeded.success = (Disable-FlowLogs $disabledFlList) -and $allSucceeded.success
"</ul>" | Out-File $reportFileName -Append
if ($allSucceeded.success)
{
Write-Host "$(Get-Date) Migration done successfully" -ForeGroundColor Blue
"<div class='alert alert-success'>Migration done successfully</div>" | Out-File $reportFileName -Append
}
else
{
Write-Host "$(Get-Date) There were some errors please go through report" -ForeGroundColor Red
"<div class='alert alert-danger'>There were some errors in migration please go through report</div>" | Out-File $reportFileName -Append
}
"</div>" | Out-File $reportFileName -Append
return $allSucceeded.success
}
function CreateNonAggregated-Flowlogs($flList, $disabledFlList, $createdVnetFlowlogs, $targetEtagMap)
{
($htmlTabHeader.replace("#tabId#", 'pills-migration')).replace('#message#', "$(Get-Date) This tab has logs related to migration process, like which flowlog is being created/disabled") | Out-File $reportFileName -Append
"</table><ul class='list-group'>" | Out-File $reportFileName -Append
$allSucceeded = @{ "success" = $true }
$flList | ForEach-Object -ThrottleLimit $numOfThreads -Parallel {
$flSettings = $_
$targetResource = Get-AzResource -ResourceId $flSettings.TargetResourceId -ErrorAction SilentlyContinue
$numOfThreads = $using:numOfThreads
$createFlowLogStr = $using:createFlowLogStr
$compareFlowLogSettingStr = $using:compareFlowLogSettingStr
$getSubnetIdForNicStr = $using:getSubnetIdForNicStr
$targetEtagMap = $using:targetEtagMap
$createdVnetFlowlogs = $using:createdVnetFlowlogs
$disabledFlList = $using:disabledFlList
$mutex = $using:mutex
$allSucceeded = $using:allSucceeded
$reportFileName = $using:reportFileName
if ($null -eq $targetResource)
{
Write-Host "Target resource" $fl.TargetResourceId "not found for flowlog" $fl.Id -ForeGroundColor Yellow
return
}
#Write-Host "Creating non-aggregated flowlogs for flowLog:" $flSettings.Name "TargetResourceId:" $flSettings.TargetResourceId -ForeGroundColor Blue
if($targetResource.ResourceType -eq "Microsoft.Network/networkSecurityGroups")
{
$nsg = Get-AzNetworkSecurityGroup -Name $targetResource.Name -ResourceGroup $targetResource.ResourceGroupName
$nsg.Subnets | ForEach-Object -ThrottleLimit $using:numOfThreads -Parallel {
$subnet = $_
${function:Create-FlowLog} = $using:createFlowLogStr
${function:Compare-CreatedFlowLogSettings} = $using:compareFlowLogSettingStr
${function:Get-SubnetIdForNic} = $using:getSubnetIdForNicStr
$isTargetPresent = $false
[void]($using:mutex).WaitOne()
try
{
$isTargetPresent = ($using:targetEtagMap).ContainsKey($subnet.Id)
($using:targetEtagMap)[$subnet.Id] = $null
}
finally
{
($using:mutex).ReleaseMutex()
}
if ($isTargetPresent -eq $false)
{
($using:allSucceeded).success = (Create-FlowLog $subnet.Id $using:flSettings $using:createdVnetFlowlogs $using:targetEtagMap $using:mutex $using:reportFileName) -and ($using:allSucceeded).success
}
else
{
[void]($using:mutex).WaitOne()
try
{
Write-Host "Vnet flowlog already exists for the target" $subnet.Id -ForeGroundColor Green
("<li class='list-group-item list-group-item-success'>$(Get-Date) Vnet flowlog already exists for the target:" + $subnet.Id + "</li>") | Out-File $using:reportFileName -Append
}
finally
{
($using:mutex).ReleaseMutex()
}
}
}
$nsg.NetworkInterfaces | ForEach-Object -ThrottleLimit $using:numOfThreads -Parallel {
$nic = $_
${function:Create-FlowLog} = $using:createFlowLogStr
${function:Compare-CreatedFlowLogSettings} = $using:compareFlowLogSettingStr
${function:Get-SubnetIdForNic} = $using:getSubnetIdForNicStr
$isTargetPresent = $false
[void]($using:mutex).WaitOne()
try
{
$isTargetPresent = ($using:targetEtagMap).ContainsKey($nic.Id)
($using:targetEtagMap)[$nic.Id] = $nic.Id
}
finally
{
($using:mutex).ReleaseMutex()
}
if ($isTargetPresent -eq $false)
{
if ($nic.Id.Contains('/virtualMachineScaleSets/'))
{
$subnetId = Get-SubnetIdForNic($nic.Id);
if ($null -eq $subnetId)
{
[void]($using:mutex).WaitOne()
try
{
Write-Host "Subnet not found for vmss nic hence not creating flowlog" -ForegroundColor Yellow
("<li class='list-group-item list-group-item-info'>$(Get-Date) Subnet not found for vmss nic hence not creating flowlog" + $fl.TargetResourceId + "</li>") | Out-File $using:reportFileName -Append
}
finally
{
($using:mutex).ReleaseMutex()
}
}
else
{
[void]($using:mutex).WaitOne()
try
{
$isTargetPresent = ($using:targetEtagMap).ContainsKey($subnetId)
($using:targetEtagMap)[$subnetId] = $null
}
finally
{
($using:mutex).ReleaseMutex()
}
if ($isTargetPresent -eq $false)
{
($using:allSucceeded).success = (Create-FlowLog $subnetId $using:flSettings $using:createdVnetFlowlogs $using:targetEtagMap $using:mutex $using:reportFileName) -and ($using:allSucceeded).success
}
else
{
[void]($using:mutex).WaitOne()
try
{
Write-Host "Flowlog has already been created on subnet" $subnetId "of vmss nic" $nic.Id -ForeGroundColor Green
("<li class='list-group-item list-group-item-success'>$(Get-Date) Flowlog has already been created on subnet " + $subnetId + " of vmss nic:" + $nic.Id + "</li>") | Out-File $using:reportFileName -Append
}
finally
{
($using:mutex).ReleaseMutex()
}
}
}
}
else
{
($using:allSucceeded).success = (Create-FlowLog $nic.Id $using:flSettings $using:createdVnetFlowlogs $using:targetEtagMap $using:mutex $using:reportFileName) -and ($using:allSucceeded).success
}
}
else
{
[void]($using:mutex).WaitOne()
try
{
Write-Host "Vnet flowlog already exists for the target" $nic.Id -ForeGroundColor Green
("<li class='list-group-item list-group-item-success'>$(Get-Date) Vnet flowlog already exists for the target:" + $nic.Id + "</li>") | Out-File $using:reportFileName -Append
}
finally
{
($using:mutex).ReleaseMutex()
}
}
}
Get-Job | Wait-Job
}
}
Get-Job | Wait-Job
$allSucceeded.success = (Disable-FlowLogs $disabledFlList) -and $allSucceeded.success
"</ul>" | Out-File $reportFileName -Append
if ($allSucceeded.success)
{
Write-Host "$(Get-Date) Migration done successfully" -ForeGroundColor Blue
"<div class='alert alert-success'>Migration done successfully</div>" | Out-File $reportFileName -Append
}
else
{
Write-Host "$(Get-Date) There were some errors please go through report" -ForeGroundColor Red
"<div class='alert alert-danger'>There were some errors in migration please go through report</div>" | Out-File $reportFileName -Append
}
"</div>" | Out-File $reportFileName -Append
return $allSucceeded.success
}
function Delete-FlowLogs($flowLogList)
{
$allSucceeded = @{ "success" = $true }
$flowLogList | ForEach-Object -ThrottleLimit $numOfThreads -Parallel {
$fl = $_
Remove-AzNetworkWatcherFlowLog -ResourceId $fl.Id
Start-Sleep -Seconds 10
$deletedFl = Get-AzNetworkWatcherFlowLog -Location $fl.Location -Name $fl.Name -ErrorAction SilentlyContinue
[void]($using:mutex).WaitOne()
try
{
if ($null -eq $deletedFl)
{
Write-Host "Deleted flowlog:" $fl.Name ", TargetResourceId: " $fl.TargetResourceId -ForeGroundColor Green
("<li class='list-group-item list-group-item-success'>Deleted flowlog:" + $fl.Name + ", TargetResourceId: " + $fl.TargetResourceId + "</li>") | Out-File $using:reportFileName -Append
}
else
{
$allSucceeded.success = $false
Write-Host "Failed to delete flowlog:" $fl.Name ", TargetResourceId: " $fl.TargetResourceId -ForeGroundColor Yellow
("<li class='list-group-item list-group-item-info'>Failed to delete flowlog:" + $fl.Name + ", TargetResourceId: " + $fl.TargetResourceId + "</li>") | Out-File $using:reportFileName -Append
}
}
finally
{
($using:mutex).ReleaseMutex()
}
}
Get-Job | Wait-Job
return $allSucceeded.success
}
function Disable-FlowLogs($disabledFlList)
{
$allSucceeded = @{"success" = $true}
$disabledFlList.Values | ForEach-Object -ThrottleLimit $numOfThreads -Parallel {
$flSettings = $_
${function:Compare-CreatedFlowLogSettings} = $using:compareFlowLogSettingStr
if ($flSettings.Enabled)
{
$flSettings.Enabled = $false
if (($null -eq $flSettings.FlowAnalyticsConfiguration.NetworkWatcherFlowAnalyticsConfiguration) -or (-not $flSettings.FlowAnalyticsConfiguration.NetworkWatcherFlowAnalyticsConfiguration.WorkspaceResourceId))
{
Set-AzNetworkWatcherFlowLog -Location $flSettings.Location -Name $flSettings.Name -TargetResourceId $flSettings.TargetResourceId -StorageId $flSettings.StorageId -Enabled $false -EnableRetention $flSettings.RetentionPolicy.Enabled -RetentionPolicyDays $flSettings.RetentionPolicy.Days -FormatType $flSettings.Format.Type -FormatVersion $flSettings.Format.Version -Force
Start-Sleep -Seconds 10
$fl = Get-AzNetworkWatcherFlowLog -Location $flSettings.Location -Name $flSettings.Name
$isExpectedFl = Compare-CreatedFlowLogSettings $flSettings $fl $flSettings.TargetResourceId
($using:allSucceeded).success = $isExpectedFl -and ($using:allSucceeded).success
[void]($using:mutex).WaitOne()
try
{
if ($isExpectedFl -eq $false)
{
Write-Host "Disablement of a flowlog" $flSettings.Id "failed" -ForeGroundColor Red
Write-Host "Continuing disablement of rest of flowlogs" -ForeGroundColor Blue
("<li class='list-group-item list-group-item-danger'>Disablement of a flowlog" + $flSettings.Id + "failed</li>") | Out-File $using:reportFileName -Append
}
else
{
Write-Host "Disabled flowlog:" $flSettings.Name "TargetResourceId:" $flSettings.TargetResourceId -ForeGroundColor Green
("<li class='list-group-item list-group-item-success'>Disabled flowlog:" + $flSettings.Name + "TargetResourceId:" + $flSettings.TargetResourceId + "</li>") | Out-File $using:reportFileName -Append
}
}
finally
{
($using:mutex).ReleaseMutex()
}
}
else
{
$isTAEnabled = $flSettings.FlowAnalyticsConfiguration.NetworkWatcherFlowAnalyticsConfiguration.Enabled
$flSettings.FlowAnalyticsConfiguration.NetworkWatcherFlowAnalyticsConfiguration.Enabled = $false
Set-AzNetworkWatcherFlowLog -Location $flSettings.Location -Name $flSettings.Name -TargetResourceId $flSettings.TargetResourceId -StorageId $flSettings.StorageId -Enabled $false -EnableRetention $flSettings.RetentionPolicy.Enabled -RetentionPolicyDays $flSettings.RetentionPolicy.Days -FormatType $flSettings.Format.Type -FormatVersion $flSettings.Format.Version -EnableTrafficAnalytics:$false -TrafficAnalyticsWorkspaceId $flSettings.FlowAnalyticsConfiguration.NetworkWatcherFlowAnalyticsConfiguration.WorkspaceResourceId -TrafficAnalyticsInterval $flSettings.FlowAnalyticsConfiguration.NetworkWatcherFlowAnalyticsConfiguration.TrafficAnalyticsInterval -Force
Start-Sleep -Seconds 10
$fl = Get-AzNetworkWatcherFlowLog -Location $flSettings.Location -Name $flSettings.Name
$isExpectedFl = Compare-CreatedFlowLogSettings $flSettings $fl $flSettings.TargetResourceId
$flSettings.FlowAnalyticsConfiguration.NetworkWatcherFlowAnalyticsConfiguration.Enabled = $isTAEnabled
($using:allSucceeded).success = $isExpectedFl -and ($using:allSucceeded).success
[void]($using:mutex).WaitOne()
try
{
if ($isExpectedFl -eq $false)
{
Write-Host "Disablement of a flowlog" $flSettings.Id "failed" -ForeGroundColor Red
Write-Host "Continuing disablement of rest of flowlogs" -ForeGroundColor Blue
("<li class='list-group-item list-group-item-danger'>Disablement of a flowlog" + $flSettings.Id + "failed</li>") | Out-File $using:reportFileName -Append
}
else
{
Write-Host "Disabled flowlog:" $flSettings.Name "TargetResourceId:" $flSettings.TargetResourceId -ForeGroundColor Green
("<li class='list-group-item list-group-item-success'>Disabled flowlog:" + $flSettings.Name + "TargetResourceId:" + $flSettings.TargetResourceId + "</li>") | Out-File $using:reportFileName -Append
}
}
finally
{
($using:mutex).ReleaseMutex()
}
}
}
}
Get-Job | Wait-Job
return $allSucceeded.success
}
function Enable-FlowLogs($disabledFlList)
{
$allSucceeded = @{ "success" = $true }
$disabledFlList.Values | ForEach-Object -ThrottleLimit $numOfThreads -Parallel {
$flSettings = $_
${function:Compare-CreatedFlowLogSettings} = $using:compareFlowLogSettingStr
if ($flSettings.Enabled -eq $false)
{
$flSettings.Enabled = $true
if($null -eq $flSettings.FlowAnalyticsConfiguration.NetworkWatcherFlowAnalyticsConfiguration)
{
Set-AzNetworkWatcherFlowLog -Location $flSettings.Location -Name $flSettings.Name -TargetResourceId $flSettings.TargetResourceId -StorageId $flSettings.StorageId -Enabled $true -EnableRetention $flSettings.RetentionPolicy.Enabled -RetentionPolicyDays $flSettings.RetentionPolicy.Days -FormatType $flSettings.Format.Type -FormatVersion $flSettings.Format.Version -Force
Start-Sleep -Seconds 10
$fl = Get-AzNetworkWatcherFlowLog -Location $flSettings.Location -Name $flSettings.Name
$isExpectedFl = Compare-CreatedFlowLogSettings $flSettings $fl $flSettings.TargetResourceId
($using:allSucceeded).success = $isExpectedFl -and ($using:allSucceeded).success
[void]($using:mutex).WaitOne()
try
{
if ($isExpectedFl -eq $false)
{
Write-Host "Enablement of a flowlog" $flSettings.Id "failed" -ForeGroundColor Red
Write-Host "Continuing with enablement of rest of flowlogs" -ForeGroundColor Blue
("<li class='list-group-item list-group-item-danger'>$(Get-Date) Enablement of a flowlog" + $flSettings.Id + "failed</li>") | Out-File $using:reportFileName -Append
}
else
{
Write-Host "Enabled flowlog:" $flSettings.Name "TargetResourceId:" $flSettings.TargetResourceId -ForeGroundColor Yellow
("<li class='list-group-item list-group-item-info'>Enabled flowlog:" + $flSettings.Name + "TargetResourceId:" + $flSettings.TargetResourceId + "</li>") | Out-File $using:reportFileName -Append
}
}
finally
{
($using:mutex).ReleaseMutex()
}
}
else
{
Set-AzNetworkWatcherFlowLog -Location $flSettings.Location -Name $flSettings.Name -TargetResourceId $flSettings.TargetResourceId -StorageId $flSettings.StorageId -Enabled $true -EnableRetention $flSettings.RetentionPolicy.Enabled -RetentionPolicyDays $flSettings.RetentionPolicy.Days -FormatType $flSettings.Format.Type -FormatVersion $flSettings.Format.Version -EnableTrafficAnalytics:$flSettings.FlowAnalyticsConfiguration.NetworkWatcherFlowAnalyticsConfiguration.Enabled -TrafficAnalyticsWorkspaceId $flSettings.FlowAnalyticsConfiguration.NetworkWatcherFlowAnalyticsConfiguration.WorkspaceResourceId -TrafficAnalyticsInterval $flSettings.FlowAnalyticsConfiguration.NetworkWatcherFlowAnalyticsConfiguration.TrafficAnalyticsInterval -Force
Start-Sleep -Seconds 10
$fl = Get-AzNetworkWatcherFlowLog -Location $flSettings.Location -Name $flSettings.Name
$isExpectedFl = Compare-CreatedFlowLogSettings $flSettings $fl $flSettings.TargetResourceId
($using:allSucceeded).success = $isExpectedFl -and ($using:allSucceeded).success
[void]($using:mutex).WaitOne()
try
{
if ($isExpectedFl -eq $false)
{
Write-Host "Enablement of a flowlog" $flSettings.Id "failed" -ForeGroundColor Red
Write-Host "Continuing with enablement of rest of flowlogs" -ForeGroundColor Blue
("<li class='list-group-item list-group-item-danger'>$(Get-Date) Enablement of a flowlog" + $flSettings.Id + "failed</li>") | Out-File $using:reportFileName -Append
}
else
{
Write-Host "Enabled flowlog:" $flSettings.Name "TargetResourceId:" $flSettings.TargetResourceId -ForeGroundColor Yellow
("<li class='list-group-item list-group-item-info'>Enabled flowlog:" + $flSettings.Name + "TargetResourceId:" + $flSettings.TargetResourceId + "</li>") | Out-File $using:reportFileName -Append
}
}
finally
{
($using:mutex).ReleaseMutex()
}
}
}
}
Get-Job | Wait-Job
return $allSucceeded.success
}
function Delete-NSGFlowLogs()
{
Write-Host "Deleting all disabled NSG flowlogs in region:" $region "and subscription:" $subscriptionId -ForegroundColor Blue
$flList = Get-AzNetworkWatcherFlowLog -Location $region
$disabledNSGFlList = Filter-DisabledNSGFlowLogs $flList
Write-Host "Following flowlogs will be deleted:" -ForegroundColor Blue
Print-FlowLogs $disabledNSGFlList
$proceed = Read-ValuesIgnoringPreviousEntries("Proceed with deletion of flowlogs?(y/n)")
if ($proceed -eq 'y')
{
if ((Delete-FlowLogs $disabledNSGFlList))
{
Write-Host "Deleted all disabled NSG flowlogs in region:" $region "and subscription:" $subscriptionId -ForegroundColor Green
}
else
{
Write-Host "There were some failures in deletion of disabled NSG flowlogs in region:" $region "and subscription:" $subscriptionId ", please take a look" -ForegroundColor Red
}
}
}
#endregion
#region Metadata_Formation
function Count-NicsInSubnet($subnet)
{
$set = New-Object System.Collections.Generic.HashSet[string]
foreach ($ipconfigs in $subnet.IpConfigurations)
{
$position = $ipconfigs.Id.ToLower().IndexOf("/ipconfigurations/")
if ($position -gt 0 -and $ipconfigs.Id.ToLower().IndexOf('/networkinterfaces/') -gt 0)
{
$nicId= $ipconfigs.Id.Substring(0, $position)
[void]$set.Add($nicId.ToLower())
}
}
return $set.Count
}
$countNicsInSubnetStr = ${function:Count-NicsInSubnet}.ToString()
function Get-SubnetIdForNic($nicId)
{
$components = $nicId.Split('/')
$nicRg = $components[4]
if ($nicId.Contains('/virtualMachineScaleSets/'))
{
$vmssName = $components[8]
$nicName = $components[12]
$vmss = Get-AzVmss -Name $vmssName -ResourceGroupName $nicRg -ErrorAction SilentlyContinue # check what to do for backload in different subscription vmss scenario
if ($null -eq $vmss)
{
Write-Host "Unable to find vmss for nic ,might be deleted" -ForeGroundColor Yellow
return
}
foreach ($nicIpConfig in $vmss.VirtualMachineProfile.NetworkProfile.networkInterfaceConfigurations)
{
if ($vmss.VirtualMachineProfile.NetworkProfile.networkInterfaceConfigurations.Name -eq $nicName)
{
return $nicIpConfig.IpConfigurations[0].Subnet.Id
}
}
return $null
}
else
{
$nicName = $components[8]
$nic = Get-AzNetworkInterface -Name $nicName -ResourceGroupName $nicRg
if ($null -eq $nic)
{
return $null
}
return $nic.IpConfigurations[0].Subnet.Id
}
return $null
}
$getSubnetIdForNicStr = ${function:Get-SubnetIdForNic}.ToString()
function Populate-NicInfo($nicId, $processList, $nicFl, $parentMap, $disabledFlList, $nsgNicFlMap)
{
$components = $nicId.Split('/')
$subnetId = Get-SubnetIdForNic($nicId)
if ($null -eq $subnetId)
{
Write-Host "Since target reource was not found for flowlog" $nicFl.Id "removing it from processing flowlog list"
if ($nicFl.TargetResourceId.Contains('/networkSecurityGroups/') -and $nicFl.Enabled)
{
$disabledFlList[$nicFl.TargetResourceId] = $nicFl
Write-Host "Added flowlog to disable list" -ForeGroundColor Yellow
}
return
}
$components = $subnetId.Split('/')
$vnetName = $components[8]
$vnetRg = $components[4]
$vnet = Get-AzVirtualNetwork -Name $vnetName -ResourceGroupName $vnetRg -ErrorAction SilentlyContinue
if ($null -eq $vnet)
{
Write-Host "Vnet not found for flowlog" $nicFl.Id "removing it from processing flowlog list"
return
}
$parentMap[$subnetId] = $vnet.Id
$parentMap[$nicId] = $subnetId
if ($processList.ContainsKey($vnet.Id) -eq $false)
{
$processList[$vnet.Id] = @{
"Vnet" = $vnet
"Subnets" = @{}
"VnetFlowLog" = $null
"AllSubnetsWithSameSetting" = $true
"SubnetsWithFlCount" = 0
}
}
if ($processList[$vnet.Id]['Subnets'].ContainsKey($subnetId) -eq $false)
{
$subnet = Get-AzVirtualNetworkSubnetConfig -ResourceId $subnetId
$processList[$vnet.Id]['Subnets'][$subnetId] = @{
"Subnet" = $subnet
"NicsInSubnetCount" = Count-NicsInSubnet($subnet)
"Nics" = @{}
"SubnetFlowlog" = $null
"AllNicsWithSameSetting" = $true