Application upgrading method and device based on cluster container

The invention can be applied to the technical field of big data, and provides an application upgrading method and device based on a cluster container. The application upgrading method based on the cluster container comprises the steps: receiving a native load balancing model and a target mirror image version of a to-be-upgraded application; determining a pod list corresponding to the native load balancing model; and modifying a mirror image file in a pod file into a target mirror image version according to the pod list. According to the invention, the in-situ upgrading of a container in the cluster container can be realized based on original workload deployment, and compared with the in-situ upgrading of the container in the cluster container based on the newly added self-defined workload, the method has the advantages that the migration workload can be saved, the risk caused by migration is avoided, the time for rescheduling the cluster container is saved, and the upgrading speed is accelerated. 本发明可用于大数据技术领