Monitoring system health

In this recipe, we'll build on the techniques and the code produced in Chapter 7, Monitoring and Maintaing JUNOS, and we'll extend it to make a more generalized NETCONF collector tool that is able to poll general system health properties such as CPU workload.

Getting ready

In order to complete this recipe, you'll need:

• Access to a development/management platform, with the following software available:
  
  • Node.js v4 or v6
• Access to JUNOS devices that you want to monitor, all pre-configured with NETCONF-over-SSH services enabled and credentials available.

You need a working knowledge of JavaScript, and the common Node.js pattern of calling a function or method and providing a callback...