CentOS7下安装RabbitMQ
第一步下载erlang环境并安装：
rpm -Uvh https://mirrors.aliyun.com/centos/7.6.1810/extras/x86_64/Packages/epel-release-7-11.noarch.rpm
yum install erlang
第二步下载RabbitMQ的rpm包并安装：
wget http://www.rabbitmq.com/releases/rabbitmq-server/current/rabbitmq-server-3.6.15-1.el7.noarch.rpm
yum install rabbitmq-server-3.6.15-1.el7.noarch.rpm
第四步打开RabbitMQ管理Web：rabbitmq-plugins enable rabbitmq_management
默认3.3.0开始不允许guest账户非本地登录，需要修改以下设置
/usr/lib/rabbitmq/lib/rabbitmq_server-3.6.15/ebin/rabbit.app
将：{loopback_users, [<<”guest”>>]}，
改为：{loopback_users, []} 然后重启服务 systemctl restart rabbitmq-server
打开RabbitMQ的端口：
firewall-cmd --zone=public --add-port=5672/tcp --permanent
firewall-cmd --zone=public --add-port=15672/tcp --permanent
firewall-cmd --reload
