command from minion

root@dns2:~# salt-call event.fire "{'foo': 123}" 'start'
local:
    True
root@dns2:~# salt-call event.send 'start'
local:
    True

reactor.conf

# /etc/salt/master.d/reactor.conf
reactor:
    - 'salt/netapi/hook/deploy':
        - /srv/salt-dev/reactor/deploy.sls

    - 'salt/minion/*/start':
        - /srv/reactor/start.sls

start.sls

# /srv/salt-dev/reactor/start.sls

def run():
    ret = {}

    ret['testing-reactor'] = {
        'local.cmd.run': [
            {'tgt': data['id']},
            {'arg': ['echo asdf > /tmp/foo']}
        ]
    }
    return ret