https://github.com/rbenv/rbenv
http://rvm.io/
https://www.ruby-lang.org/en/downloads/
https://www.ruby-lang.org/zh_cn/downloads/
https://www.cnblogs.com/lylongs/p/11302272.html
参考以上资料，集合自己实践，整理如下步骤
yum install git gem -y
gem sources --查看当前使用的源地址
gem sources -a http://mirrors.tencent.com/rubygems/ --添加腾讯云镜像地址，注意最后的上坡斜杠是需要的，否则会报404
gem sources -r https://rubygems.org/ --删除默认的源地址
gem sources -u --更新源的缓存
国内可用key server列表：
keyserver.ubuntu.com
pgp.mit.edu
gpg --keyserver hkp://pgp.mit.edu --recv-keys 409B6B1796C275462A1703113804BB82D39DC0E3 7D2BAF1CF37B13E2069D6956105BD0E739499BDB
或
gpg --keyserver hkp://keyserver.ubuntu.com --recv-keys 409B6B1796C275462A1703113804BB82D39DC0E3 7D2BAF1CF37B13E2069D6956105BD0E739499BDB
curl -sSL https://get.rvm.io | bash -s stable
source /etc/profile.d/rvm.sh
rvm list kNown
rvm install 3.1.2
rvm docs generate-ri
ruby -v
ruby demo.rb
https://cloud.tencent.com/document/sdk
左边展开自己想要调用接口的产品分类，右上选择对应语言，就有相应的sdk配置说明
