Grain data can be used when targeting minions.
For example, the following matches all CentOS minions:
salt -G 'os:CentOS' test.ping
Match all minions with 64-bit CPUs, and return number of CPU cores for each matching minion:
salt -G 'cpuarch:x86_64' grains.item num_cpus
Additionally, globs can be used in grain matches, and grains that are nested in
a dictionary can be matched by adding a colon for each level that is traversed.
For example, the following will match hosts that have a grain called
ec2_tags, which itself is a dictionary with a key named
which has a value that contains the word
salt -G 'ec2_tags:environment:*production*'
See Is Targeting using Grain Data Secure? for important security information.