If only one of the three NSX Manager cluster nodes is in a failed state, you restore the failed node to the existing cluster. If two of the three NSX Manager cluster nodes are in a failed state, you repeat this process for each of the failed nodes.
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Procedure
Detach the Failed NSX Manager Node from the NSX Manager Cluster Before you recover a failed NSX Manager node, you must detach the failed node from the NSX Manager cluster.
Redeploy the Failed NSX Manager Node You deploy a new NSX Manager instance by using the configuration of the failed node.
Join the New NSX Manager Node to the NSX Manager Cluster You join the newly deployed NSX Manager node to the cluster by using the virtual machine web console from the vSphere Client.
Validate the Status of the NSX Manager Cluster After you added the new NSX Manager node to the cluster, you must validate the operational state of the NSX Manager cluster.
Add an SSL Certificate to the NSX Manager Node After you added the new NSX Manager node to the cluster and validated the cluster status, you must add an SSL certificate to the new node.
Restart the NSX Manager Node After assigning the certificate, you must restart the new NSX Manager node.
Validate the Status of the NSX Manager Cluster After restoring an NSX Manager node, you must validate the system status of the NSX Manager cluster.