[chef] Why will knife ec2 not work?

[David Montgomery < >]

Despite installing gem install knife-ec2 I cannot use knife with chef 11.

How does one get knife ec2 to work on ubuntu 12.04?

knife ec2 server create -r "role[monitor_server]" -N aws-monitor_server-sydney-development-1 --region ap-southeast-2 -Z ap-southeast-2b -I ami-e2ba2cd8 --flavor m1.small -G monitor -x ubuntu -E development -S aws_development_sydney -i  /home/ubuntu/.ec2/aws_development_sydney.pem
FATAL: Cannot find sub command for: 'ec2 server create -r role[monitor_server] -N aws-monitor_server-sydney-development-1 --region ap-southeast-2 -Z ap-southeast-2b -I ami-e2ba2cd8 --flavor m1.small -G monitor -x ubuntu -E development -S aws_development_sydney -i /home/ubuntu/.ec2/aws_development.pem'
The ec2 commands were moved to plugins in Chef 0.10
You can install the plugin with `(sudo) gem install knife-ec2

Thanks