New in version 2016.11.0.
The Minion data cache contains the Salt Mine data, minion grains and minion
pillar information cached on the Salt Master. By default, Salt uses the
module to save the data in a
msgpack file on the Salt Master.
While the default Minion data cache is the
localfs cache, other external
data stores can also be used to store this data such as the
To configure a Salt Master to use a different data store, the
setting needs to be established:
The pluggable data cache streamlines using various Salt topologies such as a Multi-Master or Salt Syndics configuration by allowing the data stored on the Salt Master about a Salt Minion to be available to other Salt Syndics or Salt Masters that a Salt Minion is connected to.
Additional minion data cache modules can be easily created by modeling the custom data store after one of the existing cache modules.
See cache modules for a current list.
localfs Minion data cache module doesn't require any
configuration. External data cache modules with external data stores such as
Consul require a configuration setting in the master config.
Here's an example config for Consul: