AWS IoT private.pem.key doesn't exist

问题

When I am trying to run the following node.js example from AWS IoT I get this error(following this tutorial):

pi@raspberrypi:~/aws-iot-device-sdk-js/examples $ node device-example.js -g

private.pem.key doesn't exist (--help for usage)

However I have the private.pem.key in ~/certs folder as requested by the tutorial.

pi@raspberrypi:~/aws-iot-device-sdk-js/examples $ vi device-example.js 
pi@raspberrypi:~/aws-iot-device-sdk-js/examples $ ls ~/certs/private.pem.key 
/home/pi/certs/private.pem.key

回答1:

The device-example.js program is designed to be run in pairs; each process communicates with the other through the AWS IoT platform. You'll need to start another copy of the program (it can be on another host) in order to see them communicating. More information about running the example programs can be found here. Thanks for using AWS IoT.

回答2:

Solved the problem by giving the paths like the following: pi@raspberrypi:~/aws-iot-device-sdk-js/examples $ node device-example.js --aws-region=us-west-2 --certificate-dir=/home/pi/certs --test-mode=2

来源：https://stackoverflow.com/questions/35834370/aws-iot-private-pem-key-doesnt-exist