Pillar data can be used when targeting minions. This allows for ultimate control and flexibility when targeting minions.
To start using Pillar targeting it is required to make a Pillar
data cache on Salt Master for each Minion via following commands:
salt '*' saltutil.refresh_pillar or
salt '*' saltutil.sync_all.
Also Pillar data cache will be populated during the
highstate run. Once Pillar data changes, you
must refresh the cache by running above commands for this targeting
method to work correctly.
salt -I 'somekey:specialvalue' test.version
Like with Grains, it is possible to use globbing
as well as match nested values in Pillar, by adding colons for each level that
is being traversed. The below example would match minions with a pillar named
foo, which is a dict containing a key
bar, with a value beginning with
salt -I 'foo:bar:baz*' test.version