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修改之前： 诸如provider, zone, host_schedtag_id, valid 等过滤条件，是通过过滤出符合条件的 storagecachedimage 然后使用 cachedimage_id 来过滤 cachedimge, 问题是，每一个过滤条件都会独立的去执行上面的过程，这样同样的查询可能要经过很多次，并且如果遇到 弱的过滤条件，比如 valid ，过滤出来的 storagecachedimage 非常之多，然后在使用 cachedimage_id 去过滤 cachedimage，会非常慢。 修改之后： 过滤条件的相似的逻辑合并起来，只需要向 subQuery 中添加 filter，使用 subQuery 一次把 storagecachedimage 过滤出来，然后使用 cachedimage_id 过滤 cachedimage。
Yunion OneCloud
README in Chinese
What is Yunion OneCloud?
Yunion OneCloud is an open source unified-IaaS cloud platform.
As its name sugguests, 'Yun' means 'cloud' in Chinese and 'Yunion OneCloud' means to unify many distinct clouds into the one that behaves like an integral cloud platform.
As trends show, the enterprise IT infrastructure in the future would be unavoidably heterogeneous and the public clouds should be the major infrastructure providers for many enterprises. Further, the infrastructure would most likely be prepared for the cloud-native applications running on Kubernetes. Yunion OneCloud is built to provide the cloud architecture for this scenario such that it is the middle layer between the underlying cloud infrustructures and the overlay kubernetes clusters across many clouds.
Many may consider Yunion OneCloud as a multi-cloud management platform (MCMP). Rather, we would view it as an IaaS platform as it does not only manage the resources and services from many clouds, but also hides the differences of underlying technologies and exposes one set of APIs that allow programatically interacting with the compute/storage/networking resources across many clouds.
Yunion OneCloud is working on abstracting APIs for the following resources:
- Compute, including virtual machines, images, etc.
- Storage, including disks, snapshots, object storages, etc.
- Networking, including load balancers, VPC, virtual networks, NAT gateways, security groups, etc.
- Accouting and billing, etc.
- ...
over the following many cloud providers:
- On-premise IT resources, including kvm VM, baremetal, VMware vsphere/ESXi, etc.
- Private clouds, including OpenStack, etc.
- Public clouds, including Aliyun, AWS, Azure, Tencent Cloud, Huawei Cloud, etc.
You are welcome to install and try Yunion OneCloud. Looking forward to your feedback.
Installation
Please refers to install & deployment (currently in Chinese Only).
Documentations
Architecture
Contribution
You are welcome to contribute to the project. Please refer to CONTRIBUTING.md for guidelines.
License
Apache License 2.0. See LICENSE 。