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Posted to gsoc@community.apache.org by "Liyao Miao (Jira)" <ji...@apache.org> on 2023/03/23 02:28:00 UTC
[jira] [Created] (GSOC-245) Apache ShardingSphere: Introduce new CRD as StorageNode for better usability
Liyao Miao created GSOC-245:
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Summary: Apache ShardingSphere: Introduce new CRD as StorageNode for better usability
Key: GSOC-245
URL: https://issues.apache.org/jira/browse/GSOC-245
Project: Comdev GSOC
Issue Type: Improvement
Reporter: Liyao Miao
# Apache ShardingSphere
Apache ShardingSphere is positioned as a Database Plus, and aims at building a standard layer and ecosystem above heterogeneous databases. It focuses on how to reuse existing databases and their respective upper layer, rather than creating a new database. The goal is to minimize or eliminate the challenges caused by underlying databases fragmentation.
Page: https://shardingsphere.apache.org/
Github: https://github.com/apache/shardingsphere
# Background
There is a proposal about new CRD Cluster and ComputeNode as belows:
- #167
- #166
Currently we try to promote StorageNode as major CRD to represent a set of storage units for ShardingSphere.
# Task
The elementary task is that the storage node controller could manage the lifecycle of a set of storage units, like PostgreSQL, in kubernetes.
We don't hope to create another wheel like pg-operator. So consider using a predefined parameter group to generate the target CRD.
- [ ] Create a PostgreSQL cluster while a StorageNode with pg parameters is created
- [ ] Update the PostgreSQL cluster while updated StorageNode
- [ ] Delete the PostgreSQL cluster while deleted StorageNode. Notice this may need a deletion strategy.
- [ ] Reconciling StorageNode according to the status of PostgreSQL cluster.
- [ ] The status of StorageNode would be consumed by common storage units related DistSQLs
# Relevant Skills
1. Master Go language, Ginkgo test framework
2. Have a basic understanding of Apache ShardingSphere Concepts
3. Be familiar with Kubernetes Operator, kubebuilder framework
# Targets files
StorageNode Controller - https://github.com/apache/shardingsphere-on-cloud/blob/main/shardingsphere-operator/pkg/controllers/storagenode_controller.go
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