Method for Calculating the Residual Resource of Fog Node Elements of Distributed Information Systems of Critical Infrastructure Facilities

The paper considers the process of predicting the residual technical resource of elements (devices) of information and communication systems, which are components of fog computing. The analysis of the influence of the technical state of the elements of fog nodes on the functioning of distributed information systems is carried out. A method for calculating the residual resource of fog nodes has been developed, which is advisable to use for planning the modernization of fog nodes and in the process of calculating the fault tolerance of the entire distributed infrastructure.