erlang和rabbitMq在ubuntu上的安装过程
安装rabbitMQ的前提是安装上erlang，所以从erlang安装开始。安装erlang
1，先升级一下
$:sudo apt-get update
如果软件源有问题
修改etc/apt/sources.list内为如下：
# 国内源
deb http://mirrors.aliyun.com/ubuntu/ trusty main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ trusty-security main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ trusty-updates main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ trusty-proposed main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ trusty-backports main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ trusty main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ trusty-security main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ trusty-updates main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ trusty-proposed main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ trusty-backports main restricted universe multiverse
2，下载erlang前确认安装了必要软件:
[*]gcc
[*]make
[*]autoconf
[*]libncurses-dev
$sudo apt-get install gcc make autoconf libncurses-dev
3，安装好后，安装erlang
$ sudo apt-get install erlang
4，安装公钥
wget -O- https://www.rabbitmq.com/rabbitmq-release-signing-key.asc | sudo apt-key add -
5，再升级一下
$:sudo apt-get update
6，进入~/.bashrc添加erlang的路径为环境变量（erlang具体位置可以通过whereis erlang来找到，指定到bin目录即可）
添加内容（去除中括号）：
【# 添加的erlang环境变量
export PATH=$PATH:/usr/lib/erlang/bin/】
7，配置完环境变量，刷新一下让配置生效
$ source ~/.bashrc
8，测试一下erlang，在bin目录外也可以生效，且运行语句正常。按ctrl+c 2次退出erlang。
输入：$ erl
https://img2023.cnblogs.com/blog/2390105/202308/2390105-20230824163217077-734774170.png
执行如上语句即代表erlang安装并运行成功。
安装rabbitMQ
上述成功后
1，准备环境
$ curl -s https://packagecloud.io/install/repositories/rabbitmq/rabbitmq-server/script.deb.sh | sudo bash
https://img2023.cnblogs.com/blog/2390105/202308/2390105-20230824163510539-1193286795.png
2，检查我们要装的rabbitmq版本。
$ apt-cache madison rabbitmq-server
https://img2023.cnblogs.com/blog/2390105/202308/2390105-20230824163547845-1351094867.png
通过上面erlang安装指导erlang版本是25，参考rabbitmq安装（https://www.rabbitmq.com/install-debian.html）知道需要的rabbitmq版本区间，如图：
https://img2023.cnblogs.com/blog/2390105/202308/2390105-20230824163642922-1360791563.png
3，选择对应版本
$ sudo apt-get install rabbitmq-server=3.11.21-1
完成后如图即安装成功。
https://img2023.cnblogs.com/blog/2390105/202308/2390105-20230824163731317-231552222.png
4，安装完成后还需要配置一下才能登录rabbitmq
4.1 添加用户和密码,设置账号admin，密码 991201
$ sudo rabbitmqctl add_user admin 991201
https://img2023.cnblogs.com/blog/2390105/202308/2390105-20230824163919221-1784384607.png
4.2 将admin设置为管理员用户
$ sudo rabbitmqctl set_user_tags admin administrator
https://img2023.cnblogs.com/blog/2390105/202308/2390105-20230824164005505-922759886.png
4.3 设置权限
$ sudo rabbitmqctl set_permissions -p / admin ".*" ".*" ".*"
https://img2023.cnblogs.com/blog/2390105/202308/2390105-20230824164045989-503233527.png
4.4 启用插件
$ sudo rabbitmq-plugins enable rabbitmq_management
https://img2023.cnblogs.com/blog/2390105/202308/2390105-20230824164116948-2003007702.png
4.5 进入浏览器，输入http://localhost:15672/，在窗口输入设置的账号密码
https://img2023.cnblogs.com/blog/2390105/202308/2390105-20230824164206620-1618689835.png
进来了
https://img2023.cnblogs.com/blog/2390105/202308/2390105-20230824164222599-1364217829.png
至此完成！
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