Full list of builtin grains modules

chronos Generate chronos proxy minion grains.
core The static grains, these are the core, or built in grains.
disks Detect disks
esxi Generate baseline proxy minion grains for ESXi hosts.
extra
fx2 Generate baseline proxy minion grains for Dell FX2 chassis.
junos Grains for junos.
marathon Generate marathon proxy minion grains.
mdadm Detect MDADM RAIDs
opts Simple grain to merge the opts into the grains directly if the grain_opts
philips_hue Static grains for the Philips HUE lamps
rest_sample Generate baseline proxy minion grains