使用master slave架构，想通过slave中的oplog再将数据同步给其他下游，但是slave中好像是没有oplog，不知道是就是没有，还是有什么参数来指定
业精于勤，荒于嬉;行成于思，毁于随。
master/slave has been deprecated for a long time, please use replica set instead. After enabling oplog, oplos.rs will appear in the local library, which is the oplog.
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master/slave has been deprecated for a long time, please use replica set instead. After enabling oplog, oplos.rs will appear in the local library, which is the oplog.