Comprehensive and Detailed Explanation From FortiOS 7.6, FortiWeb 7.4 Exact Extract study guide:
According to the FortiWeb 7.4 Administration Guide and the FortiWeb Ingress Controller Installation Guide, the status of backend servers in the FortiView Topology dashboard is a direct reflection of the health check results.
Interpreting the Status Icon (Orange): In the FortiView Topology view, a green circle indicates that the server is up and responding to health checks, while an orange circle indicates that the server is not running or is unreachable.
Connectivity and Routing (Option B): For the FortiWeb ingress controller to accurately monitor and protect a containerized application, it must have a valid network path to the Kubernetes (K8s) worker nodes. If the FortiWeb VM is missing a route to the specific subnet where the K8s nodes reside, the health check packets will fail to reach their destination. As a result, FortiWeb identifies the backend servers (192.168.0.1, 192.168.0.2, and 192.168.0.3) as "Down," leading to the orange status shown in the exhibit.
Health Check Failures: When the status is orange, it implies that the Server Health Check (configured in the server pool) is detecting that the web servers are not responsive to connections. While this could be caused by an application-level failure, in a fresh cloud deployment of an ingress controller, the most common underlying cause is a network routing misconfiguration preventing the FortiWeb appliance from reaching the node IPs.12
Why other options are incorrect:34
Option A: If the SDN connector were not authenticated correctly, FortiWeb would likely fail to discover the containerized resources entirely, rather than discovering them and repor5ting them as "Down".6
Option C: While wron7g IP addresses would cause a failure, the Ingress Controller's job is to dynamically sync these addresses from the K8s API; a manual configuration error in a manifest file regarding IP addresses is less likely in an automated ingress environment.
Option D: The load balancing algorithm (Round Robin, Least Connections, etc.) affects how traffic is distributed, but it does not influence the up/down health status of the individual backend servers.
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