关于salt master（Ubuntu 14.04）：
# salt '*' test.ping or execute some state files,
我可以看到屏幕像下面的消息一样挂起，无法从小兵那里得到作业ID。
[DEBUG ] Using cached minion ID from /etc/salt/minion_id: ranjith1.times.com
[DEBUG ] Missing configuration file: /root/.saltrc
[DEBUG ] MasterEvent PUB socket URI: /var/run/salt/master/master_event_pub.ipc
[DEBUG ] MasterEvent PULL socket URI: /var/run/salt/master/master_event_pull.ipc
[DEBUG ] Initializing new AsyncZeroMQReqChannel for ('/etc/salt/pki/master', 'ranjith1.times.com_master', 'tcp://192.168.233.3:4506', 'clear')
[DEBUG ] Initializing new IPCClient for path: /var/run/salt/master/master_event_pub.ipc
[DEBUG ] LazyLoaded local_cache.get_load
[DEBUG ] Reading minion list from /var/cache/salt/master/jobs/58/763acd820353b8a744c7a7167c62f2/.minions.p
[DEBUG ] get_iter_returns for jid 20161007154243656981 sent to set(['gr-test.foreman.in']) will timeout at 16:07:43.662608
# netstat shows,
Every 2.0s: netstat -antp | grep 4506
Fri Oct 7 15:37:18 2016
tcp 0 0 192.168.233.3:4506 0.0.0.0:* LISTEN 1591/python
tcp 0 0 192.168.233.3:34619 192.168.233.3:4506 TIME_WAIT -
tcp 0 0 192.168.233.3:34620 192.168.233.3:4506 TIME_WAIT -
tcp 0 0 192.168.233.3:34622 192.168.233.3:4506 TIME_WAIT -
tcp 0 0 192.168.233.3:34621 192.168.233.3:4506 TIME_WAIT -
tcp 0 0 192.168.233.3:34617 192.168.233.3:4506 TIME_WAIT -
tcp 0 0 192.168.233.3:34616 192.168.233.3:4506 TIME_WAIT -
tcp 0 0 192.168.233.3:34618 192.168.233.3:4506 TIME_WAIT -
tcp 0 0 192.168.233.3:34623 192.168.233.3:4506 TIME_WAIT -
更改了以下值：
# cat /proc/sys/net/ipv4/tcp_tw_recycle
0
# cat /proc/sys/net/ipv4/tcp_tw_reuse
0
# cat /proc/sys/net/ipv4/tcp_fin_timeout
60
# cat /proc/sys/net/ipv4/ip_local_port_range
32768 61000
为：
# cat /proc/sys/net/ipv4/ip_local_port_range
15000 65000
# cat /proc/sys/net/ipv4/tcp_fin_timeout
30
但是我仍然可以看到time_wait，请提示在服务器端（ubuntu）或salt-master配置中还需要做什么来缩短此问题。