[ec2-user@ip-10-164-76-183 ~]$ curl http://169.254.169.254/latest/user-data
#cloud-config

runcmd:
 - [ wget, -O, /home/ec2-user/chef-server-11.0.8-1.el6.x86_64.rpm, https://opscode-omnibus-packages.s3.amazonaws.com/el/6/x86_64/chef-server-11.0.8-1.el6.x86_64.rpm ]
 - [ rpm, -i, install, /home/ec2-user/chef-server-11.0.8-1.el6.x86_64.rpm ]

output: {all: '| tee -a /var/log/cloud-init-output.log'}