execute as sudo in fabric

I have a command `service app start-demo` requires me to type `sudo service app start-demo` in the command line. I used `sudo(service app start-demo)` and `sudo(sudo service app start-demo)` but I still get Warning: sudo() encountered an error (return code 1) while executing 'sudo service app start-demo' I have no problem executing that as a command line in a terminal. I am not sure if `SADeprecationWarning:` counts as a failure to fabric? Thanks. ``` user@box:/var/lib/app$ fab kickstart You are installing prereqs.......... ### Install Prereqs for Populate ### No hosts found. Please specify (single) host string for connection: localhost [localhost] Login password: ### I am starting demo ### [localhost] sudo: sudo service app start-demo [localhost] out: Starting demo Fatal error: sudo() encountered an error (return code 1) while executing 'sudo service app start-demo' Aborting. Disconnecting from localhost... done. ``` the code ``` def pserve(): print '### I am starting demo ###' #with settings(warn_only=True): sudo('sudo service app start-demo') #sudo('service app start-demo') ``` either `sudo` command will fail. `/etc/sudoers` ``` # /etc/sudoers # # This file MUST be edited with the 'visudo' command as root. # # See the man page for details on how to write a sudoers file. # Defaults env_reset # Host alias specification # User alias specification # Cmnd alias specification # User privilege specification root ALL=(ALL) ALL # Allow members of group sudo to execute any command after they have # provided their password # (Note that later entries override this, so you might need to move # it further down) %sudo ALL=(ALL) ALL # #includedir /etc/sudoers.d # Members of the admin group may gain root privileges %admin ALL=(ALL) NOPASSWD:ALL ```