Passenger

sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys 561F9B9CAC40B2F7
sudo apt-get install -y apt-transport-https ca-certificates

//命令可能过时
sudo sh -c 'echo deb https://oss-binaries.phusionpassenger.com/apt/passenger yakkety main > /etc/apt/sources.list.d/passenger.list'
sudo apt-get update
sudo apt-get install -y nginx-extras passenger

vi /etc/nginx/nginx.conf  //去掉#   `# include /etc/nginx/passenger.conf;`

sudo service nginx restart

//check
sudo /usr/bin/passenger-config validate-install
sudo /usr/sbin/passenger-memory-stats

来源：
安装文档