# blade create process kill

杀进程

## 介绍

此实验会指定进程号杀掉进程。支持命令行或者命令中进程匹配。

此实验可以验证程序的自愈能力，或者服务进程不存在时，系统的容错能力。

## 参数

```
--process string       进程关键词，会在整个命令行中查找
--process-cmd string   进程命令，只会在命令中查找
--count string      限制杀掉进程的数量，0 表示无限制
--signal string     指定杀进程的信号量，默认是 9，例如 --signal 15
--timeout string   设定运行时长，单位是秒，通用参数
```

## 案例

```
# 删除包含 SimpleHTTPServer 关键词的进程
blade create process kill --process SimpleHTTPServer

# 删除 java 进程
blade create process kill --process-cmd java

# 指定信号量和本地端口杀进程
blade c process kill --local-port 8080 --signal 15 

# 执行前
netstat -tanp | grep 8080
tcp        0      0 0.0.0.0:8080            0.0.0.0:*               LISTEN      10764/java

# 执行后此进程已不存在
```

## 实现原理

\--process 内部使用 ps -ef | grep KEY 查找；--process-cmd 内部使用 pgrep 命令查找。使用 kill -9 PIDS 杀死进程。

## 常见问题

Q：信号量有哪些？ A：Common kill signals

Signal name Signal value Effect SIGHUP 1 Hangup SIGINT 2 Interrupt from keyboard SIGKILL 9 Kill signal SIGTERM 15 Termination signal SIGSTOP 17,19,23 Stop the process

Q：杀死的进程能否恢复 A：blade 命令不能恢复杀掉的进程


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