In the past, If a large number of server names were defined, or unusually long server names were defined, tuning the server_names_hash_max_size and server_names_hash_bucket_size directives at the http level in the Nginx configuration was necessary. Otherwise, the following error would occur:
could not build the server_names_hash,
you should increase server_names_hash_bucket_size: 32
cPanel now automatically configures these values, and no additional customization is necessary, and if these values are modified manually, they will not be used by Nginx.
No workaround is needed to address these issues. cPanel will automatically adjust these values if required. If you experience problems relating to the server_names_hash, please submit a ticket.