Chris's questions

I've given my user root permission to run systemcl via visudo.

# visudo
XXXXXX ALL=NOPASSWD: /bin/systemctl restart shiny-server.service

After logging out and back in, I run the command:

$ /bin/systemctl restart shiny-server.service

And get:

==== AUTHENTICATING FOR org.freedesktop.systemd1.manage-units ===
Authentication is required to restart 'shiny-server.service'.
Authenticating as: XXXXXXX
Password:

I'm seeing things on line talking about polkit but I'm not sure if that also needs to be configured along with visudo. What's required here to prevent a password from being required to run the command as a specified user?

I've setup Prometheus and node_exporter. All example graphs I've found utilize node_cpu but I don't have this metric present. The closest I've come is node_cpu_seconds_total. Am I missing something or is my version of Prometheus incompatible with these graphs?