If you have a chain replication setup (such as server A --> sever B --> server C) and you wish to make server C a direct slave of server A, you have to stop replication on server B, let server C catch up with server B, and then find the coordinates of server A corresponding to the position where server B stopped. Using those coordinates, you can execute a CHANGE MASTER TO command on server C and make it a slave of server A.
Switching the slave from chain replication to master-slave
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