Microsoft Azure Load Balancer Monitoring


Microsoft Azure Load Balancer - An Overview

Applications Manager's Azure Load Balancer monitoring tool acts as the best solution to monitor the availability and performance of your Azure Load Balancer. With this monitoring tool, it is possible to gain complete visibility into your Load Balancer deployed on Azure. It tracks the key metrics such as Data path availability, Health probe status, Data throughput, SNAT connection, etc.

Creating a new Azure Load Balancer monitor

To learn how to create a new Azure Load Balancer monitor, click here.

Monitored Parameters

Navigate to the Category View by clicking the Monitors tab. Hover over 'Child Monitors' under Microsoft Azure in the Cloud Apps table, and then select the Load Balancer monitor from the displayed tooltip. This action will display the bulk configuration view for Azure Load Balancer in three tabs:

  • Availability tab gives the availability history for the past 24 hours or 30 days.
  • Performance tab gives the health status and events for the past 24 hours or 30 days.
  • List view tab enables you to perform bulk admin configurations.

The Microsoft Azure monitor provides a brief detail of the Azure Load Balancer under the given subscription. Following are the list of metrics monitored in Azure Load Balancer Monitoring in their corresponding tabs:

Note: Data shown for all the metrics in Azure Load Balancer monitor is collected via Azure REST APIs (Azure Service APIs and Azure Monitor API)

Overview

MetricsDescription
Data Path Availability Average Load Balancer data path availability over a specified poll interval.
Health Probe Status Average Load Balancer health probe status over a specified poll interval.
SNAT Ports
Allocated SNAT Ports Total number of SNAT Ports allocated to the load balancer over a specified poll interval.
Used SNAT Ports Total number of SNAT ports used over a specified poll interval.
Outbound Connection Statistics
Total SNAT Connections Total number of new SNAT connections created over a specified poll interval.
Failed SNAT Connections Total number of Failed SNAT connections over a specified poll interval.
Pending SNAT Connections Total number of Pending SNAT connections over a specified poll interval.
Successful SNAT Connections Total number of Successful SNAT connections over a specified poll interval.
Data Throughput
Total Bytes Total amount of Byte count over a specified poll interval.
Bytes In Total amount of Byte received over a specified poll interval.
Bytes Out Total amount of Byte transmitted over a specified poll interval.
Packets Count
Total Packets Total number of Packets count over a specified poll interval.
Packets In Total number of Packets received over a specified poll interval
Packets Out Total number of Packets transmitted over a specified poll interval.
SYN Packets Count
Total SYN Packets Total number of SYN Packets over a specified poll interval.
SYN Packets IN Total number of SYN Packets over a specified poll interval.
SYN Packets OUT Total number of SYN Packets transmitted over a specified poll interval.

Frontend and Backend Statistics

MetricsDescription
Frontend Statistics
Frontend IP Address Frontend IP Address.
Frontend IP Configuration Name Name of the Frontend IP Configuration associated for the Frontend IP Address.
Frontend Data Path Availability(%) Average data path availability for the frontend IP Address over a specified poll interval.
Frontend Health Probe Status(%) Average health probe status for the frontend IP Address over a specified poll interval.
Frontend Used SNAT Ports Total number of SNAT ports used by the frontend IP Address over a specified poll interval.
Frontend Bytes(MB) Total amount of Byte count used by the frontend IP Address over a specified poll interval.
Frontend Packets Total number of Packets count used by the frontend IP Address over a specified poll interval.
Frontend Successful SNAT Connections Total number of Successful SNAT connections in the frontend IP Address over a specified poll interval.
Frontend Pending SNAT Connections Total number of Pending SNAT connections in the frontend IP Address over a specified poll interval.
Frontend Failed SNAT Connections Total number of Failed SNAT connections in the frontend IP Address over a specified poll interval.
Frontend SNAT Connections Total number of new SNAT connections in the frontend IP Address created over a specified poll interval.
Frontend SYN Packets Total number of SYN Packets used by the frontend IP Address over a specified poll interval.
Backend Statistics
Backend IP Address Backend IP Address
Backend Health Probe Status(%) Average health probe status for the backend IP Address over a specified poll interval.
Backend Used SNAT Ports Total number of SNAT ports used by the backend IP Address over a specified poll interval..
Backend Successful SNAT Connections Total number of Successful SNAT connections in the backend IP Address over a specified poll interval.
Backend Pending SNAT Connections Total number of Pending SNAT connections in the backend IP Address over a specified poll interval.
Backend Failed SNAT Connections Total number of Failed SNAT connections in the backend IP Address over a specified poll interval..
Backend SNAT Connections Total number of new SNAT connections in the backend IP Address created over a specified poll interval.

Configuration

MetricsDescription
LOAD BALANCER CONFIGURATION
Provisioning State Describes the provisioning state of the Load Balancer. Possible values:
  • Deleting
  • Failed
  • Succeeded
  • Updating
Location Location on which the load balancer resides.
SKU Possible SKUs (Stock-keeping-Unit):
  • Basic
  • Standard
  • Gateway Load balancer
Tier Possible Tiers: Regional and Global.
Frontend IP Configuration
Frontend IP Configuration Name Name of the Frontend IP Configuration associated for the Frontend IP Address.
Frontend IP Address Available Frontend IP Address.
Frontend Provisioning State Describes the provisioning state of the Frontend IP Configuration. Possible values:
  • Deleting
  • Failed
  • Succeeded
  • Updating
Private IP Allocation Method Possible private IP allocation methods are Static and Dynamic.
Backend Pool Configuration
BackendAddress Pool Name Name of the backend address pool.
Backend IP Address IP address of the each backend address in the pool.
Backend VM Name VM Name which is associated for the backend IP address.
Backend VM Status VM Status which is associated for the backend IP address.
Backend Pool Provisioning State Describes the provisioning state of the Backend IP Configuration. Possible values:
  • Deleting
  • Failed
  • Succeeded
  • Updating
Inbound NAT Rule Name Name of the Inbound NAT rule.
Frontend Port Frontend port which is associated to the NAT rule.
Backend Port Backend port which is associated to the NAT rule.

Note: Backend VM Name and Backend VM Status are displayed only when the VM associated with the Backend IP Address is discovered under Azure Virtual Machine in Applications Manager