Cloud host creation method, cloud host creation device and cloud service system

Abstract

The embodiment of the invention provides a cloud host creation method, a cloud host creation device and a cloud service system. The method is applied to a target computational node in the cloud service system and comprises the following steps: receiving a creation instruction for a target cloud host; judging whether a target image file is stored locally; if not, determining a target cache node from first level cache nodes; through the target cache node, judging whether the target image file is cached in the first level cache nodes; if so, obtaining the target image file cached in the first level cache nodes through the target cache node, and creating the target cloud host according to the target image file; if not, sending a second request of acquiring the target image file to a mirror node, thereby enabling the mirror node to judge whether the target image file exists in second level cache nodes according to the second request; obtaining the target image file cached in the second level cache nodes; and creating the target cloud host according to the target image file. By the scheme provided by the embodiment of the invention, creation time of the cloud host can be reduced.

Description

technical field [0001] The present invention relates to the technical field of virtualization, in particular to a cloud host creation method, device and cloud service system. Background technique [0002] In cloud computing technology, a cloud host is a plurality of parts similar to independent hosts simulated on a physical machine through virtualization technology, and they share the hardware resources of a physical machine. The physical machine can also be called a host machine. With the popularization and commercialization of virtualization technology, more and more users need to create cloud hosts on physical machines to improve the utilization of physical machines. [0003] For example, in the Openstack (cloud computing management platform) architecture, to create a cloud host on a host machine, you first need to obtain the system disk image file of the cloud host machine. After obtaining the above system disk image file, the host machine can Cloud hosts can be created...

AI Technical Summary

Problems solved by technology

[0005] Normally, cloud hosts can be successfully created by applying the above methods, but when a large number of cloud hosts are created concurrently and there is no system disk image file corresponding to the cloud hosts on the hosts, the hosts will access the Glance server in large numbers to make the Glance server Pulling the corresponding image file puts a lot of pressure on the Glance server and takes a long time to download the image file, which prolongs or even uncontrollable the creation time of a large number of cloud hosts

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