NAD plugin development.

• apache/ pull metrics from Apache's server-status endpoint.
• centos7/ updated vm.sh
• docker/ supports the Docker API stats and events endpoints.
• linux/ load.sh and df.sh
• mysql/ MySQL server perspective

The Vagrantfile contains a CentOS 7 box definition and will install NAD and register the VM with Circonus.

cp example.cosi.yaml cosi.yaml
vi cosi.yaml
# edit settings and save
vagrant up
vagrant ssh
$ cd /vagrant

Metric value note: (ref: resmon docs)

The possible types are as follows. Any other value gets changed to '0':

• 0 - autodetect (this is the default)
• i - signed 32 bit integer
• I - unsigned 32 bit integer
• l - signed 64 bit integer
• L - unsigned 64 bit integer
• n - double
• s - string

Applies to metric output for NAD plugins, as well as, metrics submitted via httptrap.