Abstract: Centralized master node is established in normal distributed clustering algorithms in order to control clustering processes, which reduce the system's reliability, single point failure problem occurs easily. The effective distributed clustering algorithm k-Dmeans Without Master(k-DmeansWM) based on peer-to-peer concepts, which abandons the master node,uses peer nodes to achieve controlling of the clustering process entirely.Both theoretical analysis and experimental results show that k-I?meansWM not only ensures the accuracy and efficiency of cluster cases, but also greatly improves the reliability and scalability of the system.

Key words: Distributed clustering, P2P, Reliability