top - 16:09:36 up 159 days,  3:51,  4 users,  load average: 29.00, 29.07, 29.17
Tasks: 417 total,   1 running, 415 sleeping,   1 stopped,   128 zombie
Cpu(s):  0.0%us,  0.1%sy,  0.0%ni, 99.9%id,  0.0%wa,  0.0%hi,  0.0%si,  0.0%st
Mem:     16087M total,    14465M used,     1622M free,      113M buffers
Swap:      164M total,        8M used,      156M free,    13965M cached

今日登陆服务器。top一看,128个僵尸进程,用了下面的命令处理,记录如下

ps -ef |grep '<defunct>'

root       682   678  0 Jan24 ?        00:00:00 [sh] <defunct>
root       780   775  0  2011 ?        00:00:00 [sh] <defunct>
root       951   948  0 Jan24 ?        00:00:00 [sh] <defunct>
root      1420  1364  0  2011 ?        00:00:00 [sh] <defunct>
root      2109  2063  0 Jan24 ?        00:00:00 [sh] <defunct>

ps -ef |grep '<defunct>'|wc -l
128

`ps -ef | grep '<defunct>'|grep -v grep |awk '{print $2,$3}'|sed "s/^/kill -9 /g"`

同时发现系统负载是如此之高,查看mysql,发现凌晨的备份到现在还未执行完毕,杀掉备份进程,系统负载变为以下

top - 16:29:57 up 159 days,  4:12,  5 users,  load average: 1.14, 4.52, 15.14
Tasks: 305 total,   1 running, 303 sleeping,   1 stopped,   0 zombie
Cpu(s):  0.0%us,  0.0%sy,  0.0%ni, 99.9%id,  0.0%wa,  0.0%hi,  0.0%si,  0.0%st
Mem:     16087M total,    14444M used,     1643M free,      113M buffers
Swap:      164M total,        8M used,      156M free,    13965M cached

  PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND                                                                                                  
 6648 root      20   0  2472 1148  768 R    1  0.0   0:00.45 top                                                                                                      
    1 root      20   0  1940  644  596 S    0  0.0   1:29.46 init                                                                                                     
    2 root      15  -5     0    0    0 S    0  0.0   0:01.54 kthreadd

 

此故障是由于脚本程序执行故障引起的