# 注意

haproxy：负载均衡中间件，对tcp/IP协议的负载均衡支持的非常的好。

nginx：负载均衡中间件，对http协议支持的非常好，所以做一些web反向代理。

## entrypoint,cmd区别

[docker学习笔记12：Dockerfile 指令 ENTRYPOINT介绍](https://www.cnblogs.com/51kata/p/5262107.html)

[Dockerfile RUN，CMD，ENTRYPOINT命令区别](https://www.jianshu.com/p/f0a0f6a43907)

自我提醒：

1. 在docker run 启动时最后的参数会覆盖掉Dockerfile中的CMD命令

2.docker run 加上 --entrypoint的方式可以替换掉Dockerfile中的entrypoint指令

3.如果没有２的覆盖，entrypoint一定会被执行


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