saltstack 数据系统——Grains
#比如查看所有centos的机器上执行uptime命令：salt -G os:centos cmd.run 'uptime'
web12.limingyu.com:
02:24:36 up5:45,1 user,load average: 0.06, 0.11, 0.08
web13.limingyu.com:
02:24:37 up5:45,1 user,load average: 0.19, 0.09, 0.06
#自定义grains:
vim /etc/salt/minion
#打下面几行
88 grains:
89 roles:
90 - webserver
91 - memcache
保存退出，重启minion
/etc/init.d/salt-minion restart
salt -G 'roles:memcache' cmd.run 'echo hehe'
或者
vim /etc/salt/grains
web: nginx
保存退出，重启minion
salt '*' grains.item web
web12.limingyu.com:
----------
web:
nginx
web13.limingyu.com:
----------
web:
salt -G web:nginx cmd.run 'echo hehe'
web12.limingyu.com:
hehe
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