1、通过官方查询需要安装的版本
https://github.com/nodesource/distributions
2、在CentOS下获取相应版本的nodejs资源（以NodeJS 14.x为例）
粘贴 curl -sL https://rpm.nodesource.com/setup_14.x | sudo bash -
3、运行 sudo yum install -y nodejs 进行nodejs安装
You may also need development tools to build native addons:
sudo yum install gcc-c++ make
## To install the Yarn package manager, run:
curl -sL https://dl.yarnpkg.com/rpm/yarn.repo | sudo tee /etc/yum.repos.d/yarn.repo
sudo yum install yarn
4、确认安装成功
node -v
npm -v