Connection to node -1 (/ip:9092) could not be established. Broker may not be availabl &&kafka无法连接

缺乏、安全感 2023-10-09 14:04 59阅读 0赞

\*\*前言 由于原来的云服务器到期，需要在新的云服务器上部署kafka,但按照以往的配置确无法连接。

\*\*

## 解决云服务器上部署的kafka无法连接问题 ##

错误信息： Connection to node -1 (/180.76.56.208:9092) could not be established. Broker may not be available.

1、常规配置

*  解压：tar -zxvf kafka\_2.13-2.5.0.tgz
 *  解压后即完成了安装，不需要做其他操作；
 *  切换到解压后的目录：cd kafka\_2.13-2.5.0/config
 *  修改server.properties三项配置：
 *  listeners=PLAINTEXT://127.0.0.1:9092 **（云服务器需要设置本地的）**
 *  advertised.listeners=PLAINTEXT://公网IP:9092
 *  zookeeper.connect=127.0.0.1:2181
 *  启动kafka：./kafka-server-start.sh …/config/server.properties &
 *  Kafka启动后默认端口：9092

以上操作后启动后k控制台报错![在这里插入图片描述][watermark_type_d3F5LXplbmhlaQ_shadow_50_text_Q1NETiBA5YyX5Z-O5bCP5p6X_size_20_color_FFFFFF_t_70_g_se_x_16]  
启动程序连接报错  
![在这里插入图片描述][watermark_type_d3F5LXplbmhlaQ_shadow_50_text_Q1NETiBA5YyX5Z-O5bCP5p6X_size_20_color_FFFFFF_t_70_g_se_x_16 1]

*查了博客好多，也没解决问题。*

## 先了解kafka的server.properties配置文件设置的三项配置 ##

**1. listeners**  
监听ip和端口  
listeners=PLAINTEXT://127.0.0.1:9092 （云服务器需要设置本地的）  
**2. advertised.listeners**  
节 点的主机名会通知给生产者和消费者，如果没有设置，它将会使用"host.name"的值（前提是设置了host.name），否则他会使用java.net.InetAddress.getCanonicalHostName()的返回值  
advertised.listeners=PLAINTEXT://公网IP:9092  
**3. zookeepe连接**  
zookeeper.connect=127.0.0.1:2181

## 解决办法 ##

将**listeners**设置如下

listeners=PLAINTEXT://0.0.0.0:9092

重新配置listeners后就可以了  
原因： 主机名为0.0.0.0表示绑定所有的网卡。

[watermark_type_d3F5LXplbmhlaQ_shadow_50_text_Q1NETiBA5YyX5Z-O5bCP5p6X_size_20_color_FFFFFF_t_70_g_se_x_16]: https://img-blog.csdnimg.cn/3c6b61315ffe444587c5c8da442d9a21.png?x-oss-process=image/watermark,type_d3F5LXplbmhlaQ,shadow_50,text_Q1NETiBA5YyX5Z-O5bCP5p6X,size_20,color_FFFFFF,t_70,g_se,x_16
[watermark_type_d3F5LXplbmhlaQ_shadow_50_text_Q1NETiBA5YyX5Z-O5bCP5p6X_size_20_color_FFFFFF_t_70_g_se_x_16 1]: https://img-blog.csdnimg.cn/1e03eb67dd1140f18773e08f233ec580.png?x-oss-process=image/watermark,type_d3F5LXplbmhlaQ,shadow_50,text_Q1NETiBA5YyX5Z-O5bCP5p6X,size_20,color_FFFFFF,t_70,g_se,x_16

Connection to node -1 (/ip:9092) could not be established. Broker may not be availabl &&kafka无法连接

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