在Windows10环境下安装RabbitMAQ、Erlang的坑

描述：本人学习Spring Boot过程中需要用到RabbitMAQ，所以就去安装了。途中踩了无数个坑，哎呦，疼死我了。花了一天多的时间才解决，所以想花点时间来记录下一自己踩的坑。这里啰嗦一下，也是帮老师宣传一下，想要学习spring boot 的同学，可以去看看这份资料：

程序员弟弟

说一下采坑主要的原因：我自己的主要是RabbitMAQ和Erlang之间版本的冲突问题。导致我无法访问http://localhost:15672。然后就浪费了很多时间去改其他的错误，结果也没能实现。

马上介绍RabbitMAQ和Erlang的安装过程

当初我也没能安装成功，在网上查找到了这位博主的教程（对我有了启发，也是问题的一个突破点）：

https://blog.csdn.net/weixin_39735923/article/details/79288578

先下载安装Elrang（RabbitMQ服务端代码是使用并发式语言Erlang编写的，安装Rabbit MQ的前提是安装Erlang。）
- 安装地址：http://www.erlang.org/downloads
  
  注意：我下载的Elrang的版本是20.2。原因后面会说。
- 点击进入
  
  我是下载的windows 64 bit的
- 下载完之后，一路点击next即可，对应的安装目录因人而于，这里不罗嗦了。
- 接下来就是Elrang配置环境变量，windows 10 的环境变量的进入步骤我这里就不说了。
  
  进入环境变量->添加系统变量->新建->确定
  
  变量名：ERLANG_HOME
  
  路径：D:\tool\Erlang\erl9.2（换成你的安装路径）
- 然后再Path中添加 %ERLANG_HOME%\bin
- 最后检测Elrang是否安装成功：打开命令行：windows+r，windows也就是键盘左下角的图标。打开如下，
  
  成功
再下载安装RabbitMAQ
- 下载地址：http://www.rabbitmq.com/download.html
  
  官网的版本比较新，不要下载最新版本的，点击进入。
  
  我选择的3.7.3版本，后面会解释原因。
  
  选择rabbitmq-server-3.7.3.exe进行安装。
- 和上面的Elrangd的一样，一路next的，安装完成后。
- 打开RabbitMAQ的安装目录到sbin
- 输入cmd，打开命令行
  
  然后在后面输入rabbitmq-plugins enable rabbitmq_management命令进行安装
  
  最后，回到RabbitMAQ的安装目录sbin中，点击
  
  运行的结果这个
  
  表示服务器启动成功
- 最后访问：http://localhost:15672
  
  默认的用户名和密码都是：guest。
现在来说说为什么选择Elrang20.2版本和RabbitMAQ 3.7.3本版

原因：我之前都一直失败因为我选择了Elrang20.2版本，但是我选择了RabbitMAQ 3.7.7+以上的版本，在我运行到RabbitMAQ的安装目录sbin中的rabbitmq-server.bat时候，出现了这个问题：

bad “MBa” value: ageffcbfUsage: beam.smp.dll [flags] [ – [init_args] ]
The flags are:

-a size suggested stack size in kilo words for threads
in the async-thread pool, valid range is [16-8192]
-A number set number of threads in async thread pool,
valid range is [0-1024]
-B[c|d|i] c to have Ctrl-c interrupt the Erlang shell,
d (or no extra option) to disable the break
handler, i to ignore break signals
-c bool enable or disable time correction
-C mode set time warp mode; valid modes are:
no_time_warp|single_time_warp|multi_time_warp
-d don’t write a crash dump for internally detected errors
(halt(String) will still produce a crash dump)
-fn[u|a|l] Control how filenames are interpreted
-hms size set minimum heap size in words (default 233)
-hmbs size set minimum binary virtual heap size in words (default 32768)
-hmax size set maximum heap size in words (default 0)
-hmaxk bool enable or disable kill at max heap size (default true)
-hmaxel bool enable or disable error_logger report at max heap size (default t
rue)
-hpds size initial process dictionary size (default 8)
-hmqd val set default message queue data flag for processes,
valid values are: off_heap | on_heap
-K boolean enable or disable kernel poll
-n[s|a|d] Control behavior of signals to ports
Note that this flag is deprecated!
-M memory allocator switches,
see the erts_alloc(3) documentation for more info.
-pc Control what characters are considered printable (default latin1)

-P number set maximum number of processes on this node,
valid range is [1024-134217727]
-Q number set maximum number of ports on this node,
valid range is [1024-134217727]
-R number set compatibility release number,
valid range [18-20]
-r force ets memory block to be moved on realloc
-rg amount set reader groups limit
-sbt type set scheduler bind type, valid types are:
-stbt type u|ns|ts|ps|s|nnts|nnps|tnnps|db
-sbwt val set scheduler busy wait threshold, valid values are:
none|very_short|short|medium|long|very_long.
-scl bool enable/disable compaction of scheduler load,
see the erl(1) documentation for more info.
-sct cput set cpu topology,
see the erl(1) documentation for more info.
-secio bool enable/disable eager check I/O scheduling,
see the erl(1) documentation for more info.
-sub bool enable/disable scheduler utilization balancing,
see the erl(1) documentation for more info.
-sws val set scheduler wakeup strategy, valid values are:
default|legacy.
-swct val set scheduler wake cleanup threshold, valid values are:
very_lazy|lazy|medium|eager|very_eager.
-swt val set scheduler wakeup threshold, valid values are:
very_low|low|medium|high|very_high.
-sss size suggested stack size in kilo words for scheduler threads,
valid range is [20-8192] (default 128)
-sssdcpu size suggested stack size in kilo words for dirty CPU scheduler
threads, valid range is [20-8192] (default 40)
-sssdio size suggested stack size in kilo words for dirty IO scheduler
threads, valid range is [20-8192] (default 40)
-spp Bool set port parallelism scheduling hint
-S n1:n2 set number of schedulers (n1), and number of
schedulers online (n2), maximum for both
numbers is 1024
-SP p1:p2 specify schedulers (p1) and schedulers online (p2)
as percentages of logical processors configured and logical
processors available, respectively
-SDcpu n1:n2 set number of dirty CPU schedulers (n1), and number of
dirty CPU schedulers online (n2), valid range for both
numbers is [1-1024], and n2 must be less than or equal to n1
-SDPcpu p1:p2 specify dirty CPU schedulers (p1) and dirty CPU schedulers
online (p2) as percentages of logical processors configured
and logical processors available, respectively
-SDio n set number of dirty I/O schedulers, valid range is [0-1024]
-t size set the maximum number of atoms the emulator can handle
valid range is [8192-2147483647]
-T number set modified timing level, valid range is [0-9]
-V print Erlang version
-v turn on chatty mode (GCs will be reported etc)
-W<i|w|e> set error logger warnings mapping,
see error_logger documentation for details
-zdbbl size set the distribution buffer busy limit in kilobytes
valid range is [1-2097151]
-zdntgc time set delayed node table gc in seconds
valid values are infinity or intergers in the range [0-100000000]

Note that if the emulator is started with erlexec (typically
from the erl script), these flags should be specified with +.