How to Resolve NSX UI API Inaccessibility via a Sequential Rolling Reboot
Article ID: 446116
Updated On:
Products
Issue/Introduction
In VMware NSX environments, internal API paths required by the NSX UI can become unresponsive or completely inaccessible. This behavior is typically caused by a stale, deadlocked memory space or a hung execution thread within the Corfu database layer and the Cluster Boot Manager (CBM). These conditions manifest as an unreleased SITE_MANAGER_OPERATION_LOCK and broken internal network sockets across the management cluster nodes.
Environment
VMware NSX 4.1.2.x
Cause
Internal API communication paths deadlock when the Corfu database and Cluster Boot Manager (CBM) encounter network socket degradation or unreleased memory locks (SITE_MANAGER_OPERATION_LOCK), preventing successful leader elections and UI rendering.
Resolution
A systematic, sequential rolling reboot of the management nodes forces the underlying cluster management software to clear its stale state and re-initialize its platform pathways:
Log in to the command-line interface (CLI) of the first NSX Manager node using administrative credentials.
Gracefully initiate a reboot of the node to clear its local memory footprint and re-initialize its network sockets.
Wait until the node is fully online and verified stable before proceeding.
Repeat the graceful reboot sequentially for the remaining nodes in the management cluster.
Re-establishing the nodes in a clean, sequential order forces a new Corfu leader election, clears the unreleased lock, and restores the internal API paths required by the NSX UI.
Additional Information
For more complex routing or component classification related to security or management failures, consult the standard domain and technology mapping guides.
In severe or non-responsive cluster degradation scenarios, engage the specialized engineering or tech lead swarms for advanced recovery workflows.
Feedback
