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PumpkinSeed's questions

Martin Hope
PumpkinSeed
Asked: 2017-04-29 00:59:26 +0800 CST
  • 6

我有一个 react-native 应用程序，我想为启动测试版本编写一个脚本。如果它还活着，我需要击落 :8081 端口。命令：

lsof -i :8081
kill -9 <PID>

得到这个结果的 lsof ：

    COMMAND     PID USER   FD   TYPE   DEVICE SIZE/OFF NODE NAME
chrome     2423 loow  127u  IPv4 13749099      0t0  TCP localhost.localdomain:36650->localhost.localdomain:tproxy (ESTABLISHED)
qemu-syst 15091 loow   64u  IPv4 13795587      0t0  TCP localhost.localdomain:43518->localhost.localdomain:tproxy (ESTABLISHED)
qemu-syst 15091 loow   66u  IPv4 13795588      0t0  TCP localhost.localdomain:43520->localhost.localdomain:tproxy (ESTABLISHED)
qemu-syst 15091 loow   89u  IPv4 13777485      0t0  TCP localhost.localdomain:40500->localhost.localdomain:tproxy (ESTABLISHED)
node      16210 loow   16u  IPv6 13747716      0t0  TCP *:tproxy (LISTEN)
node      16210 loow   18u  IPv6 13751322      0t0  TCP localhost.localdomain:tproxy->localhost.localdomain:36650 (ESTABLISHED)
node      16210 loow   19u  IPv6 13798473      0t0  TCP localhost.localdomain:tproxy->localhost.localdomain:43518 (ESTABLISHED)
node      16210 loow   21u  IPv6 13798475      0t0  TCP localhost.localdomain:tproxy->localhost.localdomain:43520 (ESTABLISHED)
node      16210 loow   27u  IPv6 13777958      0t0  TCP localhost.localdomain:tproxy->localhost.localdomain:40500 (ESTABLISHED)

在这种情况下，我需要的是节点服务的 pid 16210。如何从 lsof 获取它？

我lsof -ti :8081尝试了仅返回pid，但它返回了所有这些。我试图用 grep: 扩展它lsof -ti :8081 | grep node，它什么都不返回。

所以我只需要进程 id 就可以将其放入kill -9 $PID.

pid
Martin Hope
PumpkinSeed
Asked: 2016-03-22 04:24:35 +0800 CST
  • 12

我怎样才能修改这个 iptables 规则，以便这台计算机的所有流量都将转发到 192.168.42.10？

iptables -t nat -A PREROUTING -s 192.168.46.0/24 -p tcp --dport 80 -j DNAT --to-destination 192.168.42.10:80

问题是我从ansible创建了ip表规则并在不同的环境中创建了它，ip地址范围不同，但我想总是将80端口转发到192.168.42.10。

iptables