Cloud platform upgrading method and device for improving reliability and efficiency

The invention relates to a cloud platform upgrading method and device for improving reliability and efficiency. The method mainly comprises the following steps: constructing a plurality of upgrading service nodes, and synchronizing an upgrading package to the plurality of upgrading service nodes; calculating the average downloading amount of the plurality of upgrading service nodes according to the total size of the sub-upgrading package set required by the to-be-upgraded nodes, and distributing a group of to-be-upgraded nodes for each upgrading service node according to the average downloading amount; and the upgrading service node starts upgrading according to the distributed to-be-upgraded node, so that the to-be-upgraded node downloads and upgrades the sub-upgrade packages according to the dependency relationship among the sub-upgrade packages. According to the method, the reliable upgrading service is provided by constructing the upgrading service cluster nodes, the software upgrading package downloading