安装依赖
yum install zlib-devel curl-devel openssl-devel apr-devel apr-util-devel expat-devel gettext-devel readline-devel gdbm-devel tcl-devel tk-devel
手动安装libyaml否则会提示“yaml.h is missing. Please install libyaml. Failed to configure psych. It will not be installe......