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| yum -y update
yum -y install epel-release
yum -y install erlang socat
erl -version
erlang手动安装
# centos内置erlang版本过低手动下载
wget http://erlang.org/download/otp_src_21.3.tar.gz
./configure --prefix=/usr/local/erlang --with-ssl --enable-threads --enable-smp-support --enable-kernel-poll --enable-hipe --without-javac
erlang语言编译配置选项：
–prefix 指定安装目录
–enable-smp-support启用对称多处理支持（Symmetric Multi-Processing对称多处理结构的简称）
–enable-threads启用异步线程支持
–enable-sctp启用流控制协议支持（Stream Control Transmission Protocol，流控制传输协议）
–enable-kernel-poll启用Linux内核poll
–enable-hipe启用高性能Erlang
–with-ssl 启用ssl包
–without-javac 不用java编译
编译安装
make && make install
配置Erlang的环境变量
vim /etc/profile
export PATH=$PATH:/usr/local/erlang/bin
source /etc/profile
测试Erlang安装是否成功，输入erl，查看版本信息
测试输入hello.，在控制台上看到输入hello,之后退出输入halt().，Erlang环境安装完毕
# rabbitmq安装
rpm --import https://packagecloud.io/rabbitmq/rabbitmq-server/gpgkey
rpm --import https://packagecloud.io/gpg.key
curl -s https://packagecloud.io/install/repositories/rabbitmq/
rabbitmq-server/script.rpm.sh | sudo bash
wget
centOS7：
https://github.com/rabbitmq/rabbitmq-server/releases/download/v3.8.5
/rabbitmq-server-3.8.5-1.el7.noarch.rpm
CentOS8:
https://github.com/rabbitmq/rabbitmq-server/releases/download/v3.8.5
/rabbitmq-server-3.8.5-1.el8.noarch.rpm
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