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rpm包有系统版本要求，el是Red Hat Enterprise Linux(EL)的缩写。
EL7是Red Hat 7.x，Centos 7.x
EL8是Red Hat 8.x, Centos 8.x

所以我们在安装erlang及rabbitmq时需要选择与自己的服务器相对应的rpm包

# rabbitmq的rpm安装包
https://github.com/rabbitmq/rabbitmq-server/releases?page=10
# erlang的rpm安装包
https://github.com/rabbitmq/erlang-rpm/releases?page=6
# erlang及rabbitmq版本对应关系
https://www.rabbitmq.com/which-erlang.html

1、查看系统版本

2、下载安装包

sudo wget https://github.com/rabbitmq/erlang-rpm/releases/download/v23.3.4.11/erlang-23.3.4.11-1.el7.x86_64.rpm

sudo wget https://github.com/rabbitmq/rabbitmq-server/releases/download/v3.9.16/rabbitmq-server-3.9.16-1.el7.noarch.rpm

3、安装erlang

sudo rpm -ivh erlang-23.3.4.11-1.el7.x86_64.rpm

yum install -y erlang

# 查看erlang版本  erl -version

yum install -y socat

4、安装rabbitmq

sudo rpm -ivh rabbitmq-server-3.9.16-1.el7.noarch.rpm

yum install rabbitmq-server -y

5、配置防火墙允许的端口

6、设置授权账号和密码，给予超级管理员角色

rabbitmqctl add_user admin admin
rabbitmqctl set_user_tags admin administrator

7、设置rabbitmq图像化界面

rabbitmq-plugins enable rabbitmq_management

8、测试连接

启动rabbitmq报错{"init terminating in do_boot",{error,{asn1,{"no such file or directory","asn1.app"}}}}

解决方法：

清理之前安装的erlang及rabbiemq，并重新安装

yum remove -y rabbitmq-server erlang erlang-* 
rm -rf /usr/lib64/erlang
rm -rf /var/lib/rabbitmq