1,系统版本查看
2,安装依赖包
yum -y install ruby-devel
yum -y install mysql-devel
yum -y install gcc-c++ gcc rubygems
yum -y install libxml2 libxslt libxml2-devel libxslt-devel
3,编译安装ruby(如yum安装版本太低会安装不上mechanize)
wget https://cache.ruby-lang.org/pub/ruby/2.4/ruby-2.4.1.tar.gz
tar -xf ruby-2.4.1.tar.gz
cd ruby-2.4.1
./configure
make && make install
4,安装mysql2和mechanize
gem install mechanize
gem install mysql2
PS:如果安装mechanize报错需要执行一下命令gem install nokogiri -- --use-system-libraries