Abstract: This paper proposed an autonomous dynamic virtual machine migration framework for load balancing based on the idea of ant colony algorithm．The framework does not need central management module so that servers can achieve autonomous virtual machines migration,avoiding the single point of failure．The migration mechanism of the framework is achieved making use of intelligent ants and the ants’ searching radius can be adjusted automatically according to the load of the system using fuzzy logic reasoning in order to improve the searching performance．At last,this paper extended the cloud computing simulative platform CloudSim to achieve the autonomous virtual machine migration framework proposed in this paper．Experiments were carried out in the extended platform to verify the feasibility of this framework．The parameter of framework was setted,and the excellent load banlancing ability of this framework was demonstrated by analyzing and comparing the results of simulation．

Key words: Cloud computing,Load balancing,Migration of virtual machines,Ant colony algorithm