Dgraph logging variables are toggled using the /config/ddomain?op=log-enable&name=<variable-name> and /config/ddomain?op=log-disable&name=<variable-name> operations.
You can include multiple logging variables in a single request. Unrecognized logging variables generate warnings.
/config/wine?op=log-enable&name=requestverboseturns on verbose logging for queries, while this operation:
config/wine?op=log-enable&name=textsearchrelrankverbose&name=textsearchspellverboseturns on verbose logging for both the text search relevance ranking and spelling features.
config/wine?op=log-enable&name=allmylogsreturns an unsupported logging setting message.