4.RabbitMQ 安装

1.安装
	yum -y install epel-release
	yum -y update

	//安装 erlang
	yum -y install erlang socat

	//查看 erlang 版本
	erl -version

	//安装 RabbitMQ
	//通过运行导入GPG密钥：
	rpm --import https://github.com/rabbitmq/signing-keys/releases/download/2.0/rabbitmq-release-signing-key.asc

	//安装 rabbit rpm 包
	https://www.rabbitmq.com/install-rpm.html#bintray

	//安装
	yum install -y rabbitmq-server.noarch

	//启动
	systemctl start rabbitmq-server.service


注意：
	1.erlang 版本低的问题

	2. 错误： file /usr/bin/epmd from install of erlang-erts-R16B-03.18.el7.x86_64 conflicts with file from package esl-erlang-21.2.3-1.x86_64
	   解决： yum remove esl-erlang-21.2.3-1.x86_64


//安装教程
https://www.linuxprobe.com/install-rabbitmq-on-centos-7.html

//rabbit 官网
https://www.rabbitmq.com/install-rpm.html#bintray

//rabbitMQ github erlang repo 库
https://github.com/rabbitmq/erlang-rpm

//erlang 官网，安装最新版本
https://www.erlang-solutions.com/resources/download.html