How to monitor and alert potential Disk and VM Level IO Throttling on Linux VMs using ARM

Introduction This blog post will present a step-by-step guide to enable disk performance monitoring on Linux VMs running on Azure using the Linux Diagnostics Extension 3.0 (LAD3). This article is a continuation of a previous post regarding the monitoring of potential Disk and VM level throttling on Windows VM. For a full introduction on what…


Microsoft Azure: How to execute a synchronous Azure PowerShell cmdlet multiple times at once, using a single PowerShell session

  Overview Often times, Microsoft Azure customers have requirements to create multiple resources of the same type, and they wish to have these resources created as quickly as possible in a scripted solution. Many of the Azure PowerShell cmdlets are synchronous in nature, where the cmdlet will not return until provisioning is complete. Synchronous operations…


Azure DNS Server Redundancy

Customers may observe that their PaaS role instances and IaaS virtual machines are only issued one DNS server IP address by DHCP.  This does not mean that name resolution in Azure has a single point of failure however. The Azure DNS infrastructure is highly redundant.  The IP address that is exposed to the customer virtual…


What is the IP address 168.63.129.16?

The IP address 168.63.129.16 is a virtual public IP address that is used to facilitate a communication channel to internal platform resources for the bring-your-own IP Virtual Network scenario.  Because the Azure platform allow customers to define any private or customer address space, this resource must be a unique public IP address.  It cannot be…


Unable to connect to multinic Linux VM

When creating an Azure VM with multiple NICs and subnets, the guest’s default gateway is not automatically set. This may cause loss of SSH connectivity as the default gateway is not assigned to the NIC that is listening for incoming traffic. Troubleshooting To access the VM, create a second VM in the same cloud service. Connect…


Unable to delete VHD, “There is currently a lease on the blob…”

For classic VMs, there are artifacts (metadata about the VHDs) that keep a lease on the VHD even when no VM is using it. To delete a disk or image for classic VMs, in the classic portal (https://manage.windowsazure.com/) select Virtual Machines on the left navigation pane, then select the Disks or Images tab on the right…


How to Copy files to/from Azure Storage

If you are looking for a reliable way to copy files to or from Azure storage then this blog post might just have the right answer. Note: In this post I am not writing anything new but merely pointing to posts or tools that already exists.   Copying VHDs (Blobs) between Storage Accounts using Azure…

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Avoiding allocation failure error in Microsoft Azure

In some cases you may encounter an allocation failure error when you are trying to perform an action which includes: Deleting and recreating a VM Creating a new VM Deploying new packages Deploying updates to existing deployments Starting a VM from stopped de-allocated state Below let’s take a look at the different versions of this…

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How to move your Windows server VM running on Hyper-V to Microsoft Azure

  Note: This blog post comes from Manoj Sehgal, Sr. Support Escalation Engineer from Microsoft Azure team.   The following blog post will guide you through the procedure to move your on premises Windows server VM which is running in Hyper-V or VMWare environment to Microsoft Azure, by uploading its VHD.   Steps: 1.      1….

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