$ sudo yum update
$ sudo yum -y install gcc-c++ glibc-headers openssl-devel readline libyaml-devel readline-devel zlib zlib-devel libffi-devel libxml2 libxslt libxml2-devel libxslt-devel sqlite-devel
$ sudo pip install --upgrade pip
$ sudo vi /etc/sudoers
secure_path に /usr/local/bin を追加 <- pip は /usr/local/bin にインストールされるため
$ sudo /usr/local/bin/pip install --upgrade scrapy
$ sudo pip install service_identity
