Note: The question is included in a number of questions that depicts the identical set-up. However, every question has a distinctive result. Establish if the solution satisfies the requirements.
Your company has a Microsoft SQL Server Always On availability group configured on their Azure virtual machines (VMs).
You need to configure an Azure internal load balancer as a listener for the availability group.
Solution: You enable Floating IP.
Does the solution meet the goal?
In the context of configuring an Azure internal load balancer as a listener for a SQL Server Always On availability group, enabling Floating IP (Direct Server Return) is indeed necessary. This configuration allows the load balancer to handle the failover by assigning the floating IP address to the active SQL Server instance in the availability group. The floating IP ensures that the listener IP address remains consistent for client connections even during failover scenarios. Therefore, the solution meets the goal.
The load balancing rules configure how the load balancer routes traffic to the SQL Server instances. For this load balancer, you enable direct server return because only one of the two SQL Server instances owns the availability group listener resource at a time. >> Floating IP (direct server return) Enabled
A is correct
Yes, enabling Floating IP on the Azure internal load balancer as a listener for the availability group can meet the goal. By enabling Floating IP, the load balancer will use a floating IP address as the source IP address for outbound flows from the backend pool. This will ensure that the IP address used by the backend pool remains the same even if a VM is restarted or replaced, which is important for maintaining the listener for the availability group.
Yes floating ip is correct ? as discussed in: https://www.examtopics.com/discussions/microsoft/view/12295-exam-az-300-topic-2-question-11-discussion/
replying an examtopics question with another examtopics question? epic.
The floating IP concept is explained in below video https://youtu.be/iEX1KJOcXVk
No, the solution does not meet the goal. Enabling Floating IP is not a required step when configuring an Azure internal load balancer as a listener for a SQL Server Always On availability group. There are several steps involved in configuring an Azure internal load balancer for a SQL Server Always On availability group, including creating the load balancer, configuring the backend pool, creating a probe, and setting the load balancing rules. Enabling Floating IP is not one of these steps.
A. Yes, enabling Floating IP on the Azure internal load balancer will allow the Always On availability group to use the IP address assigned to the load balancer even if the virtual machine instance changes. This will ensure that clients can connect to the availability group without interruption in case of a failover.
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The solution provided, enabling Floating IP, does not meet the goal of configuring an Azure internal load balancer as a listener for the availability group. Enabling Floating IP is not the correct configuration option for an Azure internal load balancer listener for SQL Server Always On availability groups. Floating IP is only used for outbound traffic from the virtual machine, and not for inbound traffic from the Azure internal load balancer. To configure an Azure internal load balancer as a listener for the availability group, you need to create an internal load balancer and configure the listener for the availability group. You will then add the IP address of the internal load balancer as the listener IP address for the availability group. Therefore, the correct answer is B. No.
Azure Load Balancer Floating IP configuration explanation: https://learn.microsoft.com/en-us/azure/load-balancer/load-balancer-floating-ip
No. If you enable floating IP, the ILB listener will not be able to tell whether a single mssqlserver is down because the ip addresses of all the VMs are the same. Your ILB won't have a mechanism to distinguish the down VM's because they lose their individual identity/IP by enabling the floating IP. The best solution is to create HTTP Health Probe on Port 1433.
The ILB listener uses a health probe to determine if the primary endpoint is down. If the health probe determines that the primary endpoint is down, the ILB listener will route traffic to the secondary endpoint. The health probe sends a request to the primary endpoint and waits for a response. If the response is not received within a specified time period, the health probe determines that the primary endpoint is down and routes traffic to the secondary endpoint
Answer: B. No Explanation: Enabling Floating IP is not the correct solution for configuring an Azure internal load balancer as a listener for the availability group. In Azure, for an internal load balancer to act as a listener for the availability group, you should configure the load balancer with a Standard SKU and a Basic SKU public IP address. The internal load balancer should be associated with the back-end pool of the availability group nodes. Therefore, enabling Floating IP does not meet the goal of configuring an Azure internal load balancer as a listener for the availability group.
In the context of SQL Server Always On AG, the Floating IP is crucial because it provides a consistent endpoint for the AG listener. To support failover Handling, Azure VNets do not support broadcasting, so the Floating IP and the internal load balancer’s probe setup help determine which node is the primary replica and direct application traffic to it without the need for broadcasting.
https://learn.microsoft.com/en-us/azure/azure-sql/virtual-machines/windows/availability-group-load-balancer-portal-configure?view=azuresql
Yes is right
worksThe load balancing rules configure how the load balancer routes traffic to the SQL Server instances. For this load balancer, you enable direct server return because only one of the two SQL Server instances owns the availability group listener resource at a time.
A correct
https://blog.sqlserveronline.com/2022/01/21/sql-server-configure-an-azure-load-balancer-for-a-sql-server-always-on-ag-in-azure-virtual-machines-possible-floating-ip-and-health-probes-connectivity-and-networking-issues/
https://learn.microsoft.com/en-us/azure/load-balancer/load-balancer-floating-ip