Agent entity system facts

[portertech]

The Sensu agent needs to discover some facts about its system and publish them in keepalives (tags).

Facts to send:

• hostname
• network interfaces (more than one address)
• os
• platform
• platform family
• platform version
• uptime

Could use a library like:

https://github.com/shirou/gopsutil

[grepory]

https://godoc.org/github.com/cloudfoundry/gosigar

[grepory]

https://github.com/cloudfoundry/gosigar

[grepory]

you can switch on runtime.GOOS to get OS family, but there's nothing in the runtime that will help there.

[grepory]

gopsutil is interesting, but the readme is confusing me. e.g.:

Several methods have been added which are not present in psutil, but will provide useful information.

[portertech]

system facts are just informational, hostname and network interface addresses are mvp, as an incident responder can use these entity attributes/tags to determine the "where"

os, platform, and release help identify what kind of system and what to expect, e.g. ssh or winrm?

uptime helps identify check failures that may have to do with fresh boots