K8S 利用Rinetd实现Service负载均衡

我会带着你远行 2023-10-06 08:54 45阅读 0赞

### Service负载均衡实现原理 ###

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2E3NzIzMDQ0MTk_size_16_color_FFFFFF_t_70]

### 修改配置文件 ###

> 注释NodePort和nodePort:32500这两行配置，32500是用于暴露对外访问的端口。

vim tomcat-service.yml

![在这里插入图片描述][20200516171857793.png]

### 重新创建 ###

kubectl create -f tomcat-service.yml

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2E3NzIzMDQ0MTk_size_16_color_FFFFFF_t_70 1]

### 验证 ###

cd www-data
    mkdir test 
    cd test
    vim index.jsp
    #内容：打印当前服务器本地的IP
    <%=request.getLocalAddr()%>

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2E3NzIzMDQ0MTk_size_16_color_FFFFFF_t_70 2]

### 端口转发 ###

![在这里插入图片描述][20200516173031798.png]

> 使用linux提供的rinetd将k8s虚拟IP与真实IP进行映射

![在这里插入图片描述][20200516173219708.png]

#### 安装rinetd工具 ####

![在这里插入图片描述][20200516173646692.png]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2E3NzIzMDQ0MTk_size_16_color_FFFFFF_t_70 3]  
![在这里插入图片描述][20200516173933263.png]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2E3NzIzMDQ0MTk_size_16_color_FFFFFF_t_70 4]

#### 配置rinetd ####

![在这里插入图片描述][202005161741363.png]  
![在这里插入图片描述][20200516174217873.png]

> 直接访问宿主机的IP：  
> 已成功实现了端口转发与负载均衡

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2E3NzIzMDQ0MTk_size_16_color_FFFFFF_t_70 5]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2E3NzIzMDQ0MTk_size_16_color_FFFFFF_t_70 6]

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[20200516171857793.png]: https://img-blog.csdnimg.cn/20200516171857793.png
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[20200516173031798.png]: https://img-blog.csdnimg.cn/20200516173031798.png
[20200516173219708.png]: https://img-blog.csdnimg.cn/20200516173219708.png
[20200516173646692.png]: https://img-blog.csdnimg.cn/20200516173646692.png
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[20200516173933263.png]: https://img-blog.csdnimg.cn/20200516173933263.png
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[202005161741363.png]: https://img-blog.csdnimg.cn/202005161741363.png
[20200516174217873.png]: https://img-blog.csdnimg.cn/20200516174217873.png
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