An administrator creates a cluster by joining a Medium sized VMware Cloud Foundation (VCF) Operations for Logs node to an existing Medium sized single-node deployment. The secondary node of the cluster fails, degrading the functionality of VCF Operations for Logs. What action should the administrator take to create a healthy active cluster?

The primary issue is a failed secondary node, which must be replaced to restore cluster functionality. The procedure for a failed node is to remove it from the cluster and deploy a new one to take its place. However, a two-node VCF Operations for Logs (vRealize Log Insight) cluster does not provide high availability for the Integrated Load Balancer (ILB), which is critical for continuous log ingestion. To create a truly "healthy active cluster" with ingestion high availability, a minimum of three nodes is required. Therefore, the correct and most robust solution is to first rebuild the failed node and then add a third node to the cluster.

A. Scale up the VCF Operations for Logs primary and secondary node to size Extra Large. Scaling up (increasing CPU/RAM/Disk) is a resource management action and does not address the root cause, which is a failed, non-operational node.
B. Scale up the VCF Operations for Logs primary and secondary node to size Large. Similar to option A, scaling node size is irrelevant to recovering a failed node and restoring cluster health and high availability.
C. Rebuild the VCF Operations for Logs cluster secondary node and place the cluster back into operation. This action restores the cluster to its previous two-node state but fails to establish a fully resilient configuration, as a two-node cluster lacks ingestion high availability.

1. VMware Aria Operations for Logs Documentation (formerly vRealize Log Insight)

"High Availability for VMware Aria Operations for Logs":

"To ensure high availability of the Integrated Load Balancer

your VMware Aria Operations for Logs cluster must contain a minimum of three nodes. If the master node that hosts the Integrated Load Balancer goes offline

the VIP address is automatically failed over to another node in the cluster." This reference directly supports the requirement for a third node to achieve a "healthy" highly available cluster.

2. VMware Aria Operations for Logs Documentation

"Administering VMware Aria Operations for Logs"

Section: "Remove an Unavailable Worker Node from a VMware Aria Operations for Logs Cluster":

"If a worker node becomes unavailable

you must remove it from the cluster. You can then add a new node to replace the unavailable one." This reference confirms that the correct first step for a failed node is to remove and replace (rebuild) it.

3. VMware Cloud Foundation 5.1 Documentation

"Administering VMware Cloud Foundation"

Section: "Management of VMware Aria Operations for Logs in VMware Cloud Foundation":

The documentation outlines the architecture and management principles

which align with the standalone product. It states

"For a production environment

a VMware Aria Operations for Logs cluster must contain at least three nodes to provide high availability." This confirms the best practice within the VCF context.