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扩展K8S动态数据源
louyuting edited this page Jul 14, 2020
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Dynamic datasource is the important feature for Sentinel，The detailed design of dynamic datasource refers to： Dynamic Datasource
In order to orient to cloud native，Sentinel is to extend dynamic datasource by K8S CRD.
- utilizing K8S CRD API to extend dynamic datasource. Standardizing the CRD, listing on custom resource and updating the newest state by controller.
- Extending the sentinel rules for components circuit breaker、flow control、 hotspot arguments control、system adaptive control
+--------------------------------+
| |
| | |
| | |
| | |
| Apply Sentinel | Sentinel K8s Datasource -> |
| Rule CRDs | RuleManager |
| +-----------------------> |
| | | |
| | | |
| | | |
+-------------------v----------------+ | | |
Kubectl | | | +--------------------------------+
| | | | |
-------------------------------> | | | |
| | | | |
Apply | | Listen and | | |
Sentinel CR | K8S API Server/ | Controller | | Sentinel K8s Datasource -> |
| CRD Server +----------------------+-----------------------> RuleManager |
| | | | |
Sentinel Dashboard | | | | |
K8s-client | | | | |
-------------------------------> | | | |
| | | | |
| | | +--------------------------------+
+------------------------------------+ | | |
| | |
| | |
| | |
| | Sentinel K8s Datasource -> |
+-----------------------> RuleManager |
| |
| |
| |
| |
| |
+--------------------------------+
The Schema refer to PR: K8S CRD definition for Sentinel rules
CRDs Controller are based on operator framework SDK. The handler logic of datasource is same with other datasource(etcd、consul...)
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