In the whole system composed by traditional OS and the applications above,the states are distributed into each layer of the system because of the hierarchy. This increases the difficulties of fault diagnosis and recovery in autonomous computing. In addition, the monitor process that examines the application still belongs to the application. This is awkward because it is the application itself that monitors itself. We propose a new autonomous OS software architecture. By imitating the octopus, the architecture adopts two layers of feedback closed loops and manages the important states of the whole system centrally. The feedback closed loops running on the higher privilege level monitor the ones running on the lower privilege level. Its main innovative features are: i. Treat OS and the applications above as one whole system. ii. The application cannot monitor itself. Processes with higher privilege level monitor processes with lower privilege level.