ruby-2.3.1下载

>wget https://cache.ruby-china.com/pub/ruby/ruby-2.3.1.tar.gz

解压

>tar -zxvf ruby-2.3.1.tar.gz

安装

>cd ruby-2.3.1

>./configure

>make&&make install

>ruby -v

>ln -s /usr/local/bin/ruby /usr/bin/ruby

>ruby -v

下载：rubygems-2.7.7

>wget https://rubygems.org/rubygems/rubygems-2.7.7.tgz

解压

>tar -zxvf rubygems-2.7.7.tgz

>cd rubygems-2.7.7

>ruby setup.rb

>yum -y  install zlib-devel

>cd ruby-2.3.1/ext/zlib

>ruby ./extconf.rb

>make&&make install

>cd rubygems-2.7.7

>ruby setup.rb

> gem install redis

>wget https://www.openssl.org/source/openssl-1.1.0h.tar.gz

>tar -zxvf openssl-1.1.0h

>cd openssl-1.1.0h

>make&&make install

>cd ruby-2.3.1/ext/openssl

>ruby extconf.rb  --with-openssl-include=/usr/local/servers/openssl-1.1.0h/include

>gem install redis

原因是ruby 的gem被和谐了，现在淘宝的ruby工程师架设了rubygems的国内镜像。使用方法如下：

> gem sources --remove https://rubygems.org/

>gem sources -a https://ruby.taobao.org/

>gem install redis

> wget https://rubygems.global.ssl.fastly.net/gems/redis-4.0.1.gem

> gem install -l ./redis-4.0.1.gem