Sentinel（二十）之Envoy RLS Token Server

柔情只为你懂 2023-01-08 06:28 196阅读 0赞

转载自  [Envoy RLS Token Server][]

Sentinel 提供了一个 [Envoy Global Rate Limiting gRPC Service][] 的实现 [`sentinel-cluster-server-envoy-rls`][sentinel-cluster-server-envoy-rls]，借助集群限流 token server 来为 Envoy 服务网格提供集群流量控制的能力。

> Note: You can refer to [here][sentinel-cluster-server-envoy-rls] for the English version.

![Envoy RLS Sentinel overview][]

## 构建 ##

若要构建可执行的 jar 包，可以在模块目录下执行：

mvn clean package -P prod

我们也提供了预构建好的 jar 包，可以在 [release 页面][release]下载。

## 示例 ##

*  [Kubernetes 示例][Kubernetes]

## 配置项 ##

配置项列表：

<table> 
 <thead> 
  <tr> 
   <th>配置项 (环境变量)</th> 
   <th>配置项 (JVM 参数)</th> 
   <th>描述</th> 
   <th>默认值</th> 
   <th>是否必须</th> 
  </tr> 
 </thead> 
 <tbody> 
  <tr> 
   <td><code>SENTINEL_RLS_GRPC_PORT</code></td> 
   <td><code>csp.sentinel.grpc.server.port</code></td> 
   <td>RLS gRPC 端口</td> 
   <td><strong>10240</strong></td> 
   <td>false</td> 
  </tr> 
  <tr> 
   <td><code>SENTINEL_RLS_RULE_FILE_PATH</code></td> 
   <td><code>csp.sentinel.rls.rule.file</code></td> 
   <td>RLS 规则 yaml 文件的路径</td> 
   <td>-</td> 
   <td><strong>true</strong></td> 
  </tr> 
  <tr> 
   <td><code>SENTINEL_RLS_ACCESS_LOG</code></td> 
   <td>-</td> 
   <td>是否开启 access log（<code>on</code>&nbsp;代表开启，会打印到控制台）</td> 
   <td>off</td> 
   <td>false</td> 
  </tr> 
 </tbody> 
</table>

[Envoy RLS Token Server]: https://github.com/alibaba/Sentinel/wiki/Envoy-RLS-Token-Server
[Envoy Global Rate Limiting gRPC Service]: https://www.envoyproxy.io/docs/envoy/latest/intro/arch_overview/other_features/global_rate_limiting#arch-overview-rate-limit
[sentinel-cluster-server-envoy-rls]: https://github.com/alibaba/Sentinel/tree/master/sentinel-cluster/sentinel-cluster-server-envoy-rls
[Envoy RLS Sentinel overview]: /images/20221119/c0b1b690a5514e4980924b04f2e8108a.png
[release]: https://github.com/alibaba/Sentinel/releases
[Kubernetes]: https://github.com/alibaba/Sentinel/tree/master/sentinel-cluster/sentinel-cluster-server-envoy-rls/sample/k8s