centos服务器ssh连接被拒绝，Connection refused

电玩女神 2023-02-14 01:27 53阅读 0赞

### 排查 ###

1.  检测服务是否正常启动  
    ps -ef | grep rabbit  
    如果服务未启动，则启动服务  
    ![启动服务][format_png]  
    ![查看服务 pid][pid]  
    然后，查看服务是否正确监听了端口  
    netstat -anp | grep pid  
    ![查看监听端口][format_png 1]
2.  检查服务端防火墙是否开启  
    systemctl status firewalld  
    ![防火墙状态][format_png 2]  
    为了服务器安全，强烈建议打开防火墙
3.  检查服务器端口是否开放  
    firewall-cmd --query-port=5672/tcp  
    ![检测端口][format_png 3]  
    如上，端口没有开放，使用如下命令打开端口  
    firewall-cmd --permanent --add-port=5672/tcp  
    ![打开端口][format_png 4]  
    然后，reload 端口开放规则  
    firewall-cmd --reload  
    ![reload][]  
    再次检测端口是否开放  
    ![重新检测端口][format_png 5]
4.  使用 nc 检测端口是否可连接成功  
    ![校验是否连接成功][format_png 6]

### 参考文档 ###

*  nc : [https://linux.cn/article-8186-1.html][https_linux.cn_article-8186-1.html]
 *  firewall-cmd : [https://www.jianshu.com/p/dd663cb4affa][https_www.jianshu.com_p_dd663cb4affa]
 *  rabbitmq : [https://www.rabbitmq.com/documentation.html][https_www.rabbitmq.com_documentation.html]

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[pid]: https://imgconvert.csdnimg.cn/aHR0cHM6Ly9pbWcyMDE4LmNuYmxvZ3MuY29tL2Jsb2cvMTQwMDkyNC8yMDE4MDkvMTQwMDkyNC0yMDE4MDkxNzE3MTYyODIxMS0xMjA0MjU1ODI1LnBuZw?x-oss-process=image/format,png
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[format_png 2]: https://imgconvert.csdnimg.cn/aHR0cHM6Ly9pbWcyMDE4LmNuYmxvZ3MuY29tL2Jsb2cvMTQwMDkyNC8yMDE4MDkvMTQwMDkyNC0yMDE4MDkxNzE3MTYyODk2OC0xODc3ODU0ODUxLnBuZw?x-oss-process=image/format,png
[format_png 3]: https://imgconvert.csdnimg.cn/aHR0cHM6Ly9pbWcyMDE4LmNuYmxvZ3MuY29tL2Jsb2cvMTQwMDkyNC8yMDE4MDkvMTQwMDkyNC0yMDE4MDkxNzE3MTYyOTM4MC01ODUzNjg0MTIucG5n?x-oss-process=image/format,png
[format_png 4]: https://imgconvert.csdnimg.cn/aHR0cHM6Ly9pbWcyMDE4LmNuYmxvZ3MuY29tL2Jsb2cvMTQwMDkyNC8yMDE4MDkvMTQwMDkyNC0yMDE4MDkxNzE3MTYyOTY5MS04NTcyMTk0MTgucG5n?x-oss-process=image/format,png
[reload]: https://imgconvert.csdnimg.cn/aHR0cHM6Ly9pbWcyMDE4LmNuYmxvZ3MuY29tL2Jsb2cvMTQwMDkyNC8yMDE4MDkvMTQwMDkyNC0yMDE4MDkxNzE3MTYyOTk5Ny04NDUxMzc5MDgucG5n?x-oss-process=image/format,png
[format_png 5]: https://imgconvert.csdnimg.cn/aHR0cHM6Ly9pbWcyMDE4LmNuYmxvZ3MuY29tL2Jsb2cvMTQwMDkyNC8yMDE4MDkvMTQwMDkyNC0yMDE4MDkxNzE3MTYzMDI4OC02MzEzMjczODIucG5n?x-oss-process=image/format,png
[format_png 6]: https://imgconvert.csdnimg.cn/aHR0cHM6Ly9pbWcyMDE4LmNuYmxvZ3MuY29tL2Jsb2cvMTQwMDkyNC8yMDE4MDkvMTQwMDkyNC0yMDE4MDkxNzE3MTYzMDYzMC0xMTE5MzAzOTYyLnBuZw?x-oss-process=image/format,png
[https_linux.cn_article-8186-1.html]: https://linux.cn/article-8186-1.html
[https_www.jianshu.com_p_dd663cb4affa]: https://www.jianshu.com/p/dd663cb4affa
[https_www.rabbitmq.com_documentation.html]: https://www.rabbitmq.com/documentation.html