视频讲解:Envoy手把手入门视频讲解

Envoy 使用过程中的常见问题

这里是 Envoy 使用过程中常遇到的问题。

Listener 的端口不可以重复

如果为两个 listener 配置了相同的监听端口,后一个 listener 会失败:

[2019-09-19 08:38:17.655][1][info][main] [source/server/server.cc:516] starting main dispatch loop
[2019-09-19 08:38:17.664][1][critical][config] [source/server/listener_manager_impl.cc:684] listener 'listener_1' failed to listen on address '0.0.0.0:81' on worker

listener 的监听端口不能重复。

Route 的域名不能重复

Http 路由中的域名不能重复,如果两个 Route 中配置了相同的域名,或者一个 Route 中配置了两个相同的域名,那么配置会下发失败,envoy 打印下面的日志:

[2019-09-10 08:41:35.917][1][warning][config] [source/common/config/grpc_mux_subscription_impl.cc:72] gRPC config for type.googleapis.com/envoy.api.v2.Listener rejected: Error adding/updating listener(s) TCP-80: Only unique values for domains are permitted. Duplicate entry of domain echo.example
[2019-09-10 08:41:35.919][1][warning][config] [source/common/config/grpc_mux_subscription_impl.cc:72] gRPC config for type.googleapis.com/envoy.api.v2.Listener rejected: Error adding/updating listener(s) TCP-80: Only unique values for domains are permitted. Duplicate entry of domain echo.example
[2019-09-10 08:41:35.921][1][warning][config] [source/common/config/grpc_mux_subscription_impl.cc:72] gRPC config for type.googleapis.com/envoy.api.v2.Listener rejected: Error adding/updating listener(s) TCP-80: Only unique values for domains are permitted. Duplicate entry of domain echo.example
[2019-09-10 08:41:35.922][1][warning][config] [source/common/config/grpc_mux_subscription_impl.cc:72] gRPC config for type.googleapis.com/envoy.api.v2.Listener rejected: Error adding/updating listener(s) TCP-80: Only unique values for domains are permitted. Duplicate entry of domain echo.example

Route 的 Prefix 可以重复

Route 的 Prefix 可以重复,试验结果表明排在前面的 Prefix 被采用,下面的例子前缀为 /abc 的请求被转发到 [email protected]@[email protected]@80 :

"routes": [
  {
    "route": {
      "cluster": "[email protected]@[email protected]@80",
      "host_rewrite": "envoy.echo.example"
    },
    "match": {
      "case_sensitive": false,
      "prefix": "/abc"
    }
  },
  {
    "route": {
      "cluster": "[email protected]@[email protected]@8080",
      "host_rewrite": "envoy.echo.example"
    },
    "match": {
      "prefix": "/abc",
      "case_sensitive": false
    }
  }
],

参考


微信公众号:我的网课 微信公众号:我的资产

results matching ""

    No results matching ""