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docs: node-status.md (#2615)
* Create node-status.md * Update node-status.md * Update node-status.md * Update node-status.md 1. add a blank line after #目录 2. remove some unnecessary lines * Update node-status.md 1. add language type in code 2. change '插件属性为空' to ‘无’ 3. change '接口插件' to '插件接口' which could add link to directory '插件接口'
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doc/zh-cn/plugins/node-status.md
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doc/zh-cn/plugins/node-status.md
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<!--
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#
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# Licensed to the Apache Software Foundation (ASF) under one or more
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# contributor license agreements. See the NOTICE file distributed with
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# this work for additional information regarding copyright ownership.
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# The ASF licenses this file to You under the Apache License, Version 2.0
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# (the "License"); you may not use this file except in compliance with
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# the License. You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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#
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-->
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# 目录
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- [**插件简介**](#插件简介)
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- [**插件属性**](#插件属性)
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- [**插件接口**](#插件接口)
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- [**启用插件**](#启用插件)
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- [**测试插件**](#测试插件)
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- [**禁用插件**](#禁用插件)
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## 插件简介
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`node-status` 是 `APISIX` 的请求状态查询插件,返回基本的状态信息。
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## 插件属性
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无。
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## 插件接口
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插件增加接口 `/apisix/status`,可通过 [interceptors](plugin-interceptors.md) 保护该接口。
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## 启用插件
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1. 配置文件 `apisix/conf/config.yaml` 的 plugin list 中配置 `node-status`
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```
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plugins: # plugin list
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- example-plugin
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- limit-req
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- node-status
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- jwt-auth
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- zipkin
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......
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```
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启动 `APISIX` 之后,即可访问该插件提供的接口,获得基本的状态信息。
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2. 在创建 route 时添加插件 `node-status`
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```sh
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$ curl http://127.0.0.1:9080/apisix/admin/routes/1 -H 'X-API-KEY: edd1c9f034335f136f87ad84b625c8f1' -X PUT -i -d '
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{
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"uri": "/route1",
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"upstream": {
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"type": "roundrobin",
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"nodes": {
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"192.168.1.100:80:": 1
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}
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},
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"plugins": {
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"node-status":{}
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}
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}'
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```
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发送该请求的前提是 `apisix/conf/config.yaml` 中已经配置 `node-status`,此时 `node-status` 插件对该请求处理无影响,所以一般不会将 `node-status` 插件设置到路由中。
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## 测试插件
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1. 发送请求
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```sh
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$ curl localhost:9080/apisix/status -i
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HTTP/1.1 200 OK
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Date: Tue, 03 Nov 2020 11:12:55 GMT
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Content-Type: text/plain; charset=utf-8
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Transfer-Encoding: chunked
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Connection: keep-alive
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Server: APISIX web server
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{"status":{"total":"23","waiting":"0","accepted":"22","writing":"1","handled":"22","active":"1","reading":"0"},"id":"6790a064-8f61-44ba-a6d3-5df42f2b1bb3"}
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```
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2. 参数说明
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| 参数 | 说明 |
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| ------------ | -------------------------------------------- |
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| status | 状态信息 |
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| total | 客户端请求总数 |
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| waiting | 当前等待客户端请求的空闲连接数 |
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| accepted | 已经接受的客户端连接总数 |
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| writing | 当前正在写给客户端响应的连接数 |
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| handled | 已经处理的连接总数,通常等于 accepted |
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| active | 当前活跃的客户端连接数 |
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| reading | 当前正在读取请求头的连接数 |
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| id | APISIX uid 信息,保存在 apisix/conf/apisix.uid |
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## 禁用插件
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1. 配置文件 `apisix/conf/config.yaml` 的 plugin list 中删除 `node-status`
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```
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plugins: # plugin list
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- example-plugin
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- limit-req
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- jwt-auth
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- zipkin
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......
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```
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2. 删除 route 中的 `node-status` 插件信息
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```sh
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$ curl http://127.0.0.1:9080/apisix/admin/routes/1 -H 'X-API-KEY: edd1c9f034335f136f87ad84b625c8f1' -X PUT -i -d '
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{
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"uri": "/route1",
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"upstream": {
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"type": "roundrobin",
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"nodes": {
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"192.168.1.100:80": 1
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}
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},
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"plugins": {}
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}'
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```
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