Azure VM Dynamic Secondary IP change, all of them will be renew

azure_vm_dynamic_secondary_ip_change.ps1

# Connect Azure account
Connect-AzAccount -Identity

# replace these with your own values
$resource_group = "AzureVMJP"

# Get Azure Resource in same resource group
$location = (Get-AzResourceGroup -Name $resource_group).Location
$vm_name = (Get-AzResource -ResourceGroupName $resource_group -ResourceType "Microsoft.Compute/virtualMachines").Name

# Stop the VM
# Stop-AzVM -ResourceGroupName $resource_group -Name $vm_name -Force

# Get the NIC
$nic_name = (Get-AzResource -ResourceGroupName $resource_group -ResourceType "Microsoft.Network/networkInterfaces").Name
$nic = Get-AzNetworkInterface -ResourceGroupName $resource_group -Name $nic_name

# Get NIC ipconfig ()
$ip_config_name = (Get-AzNetworkInterface -ResourceGroupName $resource_group -Name $nic_name).IpConfigurations[0].Name
$secondary_ip_configs = $nic.IpConfigurations | Where-Object { $_.Name -ne $ip_config_name }

# Disassociate the existing public IP address from the NIC
foreach ($secondary_ip_config in $secondary_ip_configs) {
    $secondary_ip_config.PublicIpAddress = $null
}

Set-AzNetworkInterface -NetworkInterface $nic

# Create a new public IP address
foreach ($secondary_ip_config in $secondary_ip_configs) {
    # Extract the number from the secondary IP configuration name
    $num = $secondary_ip_config.Name -replace 'ipconfig', ''

    # Create a new public IP address name
    $public_ip_name = $resource_group + "-ip" + ($num - 1)

    # Create a new public IP address
    $public_ip = New-AzPublicIpAddress -Name $public_ip_name -ResourceGroupName $resource_group -AllocationMethod Dynamic -Location $location -Force

    # Associate the new public IP address with the secondary IP configuration
    $secondary_ip_config.PublicIpAddress = $public_ip
}

# Associate the new public IP address with the NIC
Set-AzNetworkInterface -NetworkInterface $nic

# Start the VM
# Start-AzVM -ResourceGroupName $resource_group -Name $vm_name

# Output the new public IP address details for each secondary IP configuration
foreach ($secondary_ip_config in $secondary_ip_configs) {
    $public_ip_name = $resource_group + '-ip' + ([int]($secondary_ip_config.Name -replace 'ipconfig', '') - 1)
    Get-AzPublicIpAddress -ResourceGroupName $resource_group -Name $public_ip_name |
    Select-Object IpAddress, PublicIpAllocationMethod
}