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EMQX product documentation

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File: [/zh_CN/getting-started/getting-started.md](https://www.emqx.io/docs/zh/v4.4/getting-started/getting-started.html 这个页面打开后,左边导航栏挡住了后面部分内容,使文档不能正常浏览。

File: [/zh_CN/advanced/webhook.md](https://www.emqx.io/docs/zh/v4.4/advanced/webhook.html 文档中有message.dropped 的事件, 但是却没有message.dropped的参数. 配置文件中也没有对应的参数. ![image](https://user-images.githubusercontent.com/36145929/164372685-3b884c16-0a24-4a19-94e5-c565917908fb.png)

File: [/zh_CN/tutorial/tune.md](https://www.emqx.io/docs/zh/v4.4/tutorial/tune.html 结果: docker run -d --name emqx -p 18083:18083 -p 1883:1883 -p 4369:4369 \ --sysctl net.core.somaxconn=32768 \ --sysctl net.ipv4.tcp_max_syn_backlog=16384 \ --sysctl net.core.netdev_max_backlog=16384 \ --sysctl net.ipv4.ip_local_port_range='1000 65535' \ --sysctl net.core.rmem_default=262144...

File: [/zh_CN/advanced/cluster.md](https://www.emqx.io/docs/zh/v4.3/advanced/cluster.html 使用两个服务器部署了两个EMQX v4,并已加入集群。 客户端使用Nodejs https://www.npmjs.com/package/mqtt,例如node1.xxx.com的服务器宕机了,如何自动连接到node2.xxx.com?

File: [/zh_CN/development/java.md](https://www.emqx.io/docs/zh/v4.4/development/java.html ![image](https://user-images.githubusercontent.com/103182571/162170294-3e8c443d-23a7-431a-ab7b-cb97621a9ba4.png) 这里的 connOpts.setCleanSession(true); 不应该是保持会话

Page:s https://docs.emqx.io/en/broker/v4.3/rule/rule-engine.html https://docs.emqx.io/en/enterprise/v4.3/rule/rule-engine.html https://docs.emqx.io/en/cloud/latest/rule_engine/introduction.html This overview diagram is incorrect. The output doesn't match the Select statement. In the output, x and y are modified. This is the correct diagram. However,...

File: [/zh_CN/advanced/rate-limit.md](https://www.emqx.io/docs/zh/v4.4/advanced/rate-limit.html ![image](https://user-images.githubusercontent.com/5996971/160132066-44d9e302-26d3-4cbc-817d-b1566291d50e.png)

如题,docker-compose拉起来的镜像 把lib etc log data四个目录映射出来了 但是重建容器以后 规则就被清空了

File: [/zh_CN/development/client.md](https://www.emqx.io/docs/zh/v4.4/development/client.html 文中提到,客户端主动断开连接,服务器端将发布遗嘱消息(LWT)。 mqtt 遗嘱消息在客户端正常调用 disconnect 方法之后并不会被发送。事实验证正常客户端主动断开连接服务器端并不会主动发布遗嘱消息。 不知是否是文中描述问题

In some operating systems, these tuning commands maybe throw errors: ![image](https://user-images.githubusercontent.com/13825269/155490549-a63bfb1a-9373-4806-adae-84b6934bc640.png) reported by CentOS7