Linux上安装rabbitmq遇到的一些问题

在安装elixir的时候erlang，安装了错误的包

错误记录如下：

{"init terminating in do_boot",{'cannot get bootfile','no_dot_erlang.boot'}}
init terminating in do_boot ({cannot get bootfile,no_dot_erlang.boot})

此时的错误是在安装erlang的时候安装了错误的erlang，正确的需要安装的是esl-erlang，详情如下：

The “esl-erlang” package is a file containg the complete installation: it includes the Erlang/OTP platform and all of its applications. The “erlang” package is a frontend to a number of smaller packages. Currently we support both “erlang” and “esl-erlang”. Note that the split packages have multiple advantages:
seamless replacement of the available packages,
other packages have dependencies on “erlang”, not “esl-erlang”,
if your disk-space is low, you can get rid of some unused parts; “erlang-base” needs only ~13MB of space.

也就是说相较于erlang，esl-erlang的安装包是包含了所有的组件的。

rabbitmq和erlang的cookies不一致，导致启动不了

启动的日志如下：

attempted to contact: [rabbit@izm5e0h94dt7do1kplgd15z]

rabbit@izm5e0h94dt7do1kplgd15z:
  * connected to epmd (port 4369) on izm5e0h94dt7do1kplgd15z
  * epmd reports node 'rabbit' running on port 25672
  * TCP connection succeeded but Erlang distribution failed

  * Authentication failed (rejected by the remote node), please check the Erlang cookie

  current node details:
  - node name: 'rabbitmq-cli-56@izm5e0h94dt7do1kplgd15z'
  - home dir: /root
  - cookie hash: ajtINcxQAbART7QakzjkSg==

在搜索中发现了两个链接：StackOverFlow
、Rabbitmq官方文档

其中在官网中看到了介绍：

Linux, MacOS, *BSD
On UNIX systems, the cookie will be typically located in /var/lib/rabbitmq/.erlang.cookie (used by the server) and $HOME/.erlang.cookie (used by CLI tools). Note that since the value of $HOME varies from user to user, it’s necessary to place a copy of the cookie file for each user that will be using the CLI tools. This applies to both non-privileged users and root.

也就是说在Linux上，默认的cookies是在 /var/lib/rabbitmq/.erlang.cookie， 但是该rabbitmq的home目录是root，所以需要将默认路径的cookies替换到home目录下。替换之后即可。

关于Rabbitmq的web界面启动不了

提示如下：

Plugin configuration unchanged.

Applying plugin configuration to rabbit@izm5e0h94dt7do1kplgd15z... failed.

发现只要重启下rabbitmq就好了。。。

另外就是erlang的版本最好在20，在21貌似会出问题，当然针对rabbit3.6.15版本