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JON Alert 呼叫 CLI 執行shell or perl 程式

JON Agent 啓動時權限要注意!!!!千萬不要跟我一樣耍蠢~ 冏TZ...


昨天在測試JON執行shell script 的時候,
因為要透過Alert 啟動 shell 的程式,所以我就想在本機端啓動我的JON Server 與 agent 。

還有就是發動Alert 專用的JBoss AP Server.
但是不知道為啥,我確定所有的東西都設定的好好的!但電腦上的 Server 就是沒有找到....

搞了半小時候,才想到...ㄟ~ 我的JBoss 好像是用root 的權限啓動的... agent 只是用普通的user...
還我美麗的青春阿...果然改用root 啓動後,就順利找到啦! 請各位記住我的教訓~

  
上面是我的 JEAP Process ID


Agent 顯示終於找到JBoss 拉~ 我真是個笨蛋哈~


回到正題,這次是因為有人需要在JON 上設定發生警告(Alert)的時候,
可以去執行外部的Shell (or Perl),
而JON 在Alert 裡面提供一個統一的CLI 介面語言。
(等我Feel 到了再來寫寫 CLI  ~ XD~哈哈)

以下為設定的方式,

1. 先設定Alert ,到機器上選擇JBoss, 選擇最上面的Alert Tab。



2. 設定警告(Alert) 首先請給個名字,

 

3. 設定警告條件 (這裡不是重點,就自己設定自己需要的條件囉。)


4. CLI Script 的寫法,因為CLI 是類似Javascript 的寫法,(但是可以用來call Java 的 API) 所以我基本上使用了類似 Java 去 Call Native 執行的方式寫的!

1. 在我的sample folder 裡面, 先寫一個測試的 shell 
sh-3.2$ ls -l
-rwxrwxrwx  1 weimeilin  admin  138  5 15 11:06 alertSample.sh

這個Shell 的內容也沒啥,就是跟我說說hello~

#! /bin/sh
echo "Hello Chris ~!"
echo "hi hi Christina " > /Applications/EAP5.1/chrissample/hello.log
echo "bye bye Chris......"

2. 現在,寫一個test.js, 專門去執行 "alertSample.sh"

println("Hello Chris,  this is CLI");

//以下為執行的code, 若是perl 的程式,那就是 exec("perl /xx/sample.pl")

var runtime = java.lang.Runtime.getRuntime();
var proc = runtime.exec("sh /Applications/EAP5.1/chrissample/alertSample.sh");
var stdin = proc.getInputStream();
var isr = new java.io.InputStreamReader(stdin);
var br = new java.io.BufferedReader(isr);
var line = null;

println("====output====");
while ( (line = br.readLine()) != null){
    println(line);
}
println("====output DONE====");

var exitVal = proc.waitFor();
println("Process exitValue: " + exitVal);


完成後,我先至普通的CLI 界面執行,
看到執行是OK的~ log 也有正確產生


-rwxrwxrwx  1 weimeilin  admin  131  5 15 12:29 alertSample.sh
-rw-r--r--  1 root       admin   17  5 15 12:29 hello.log
-rwxr-xr-x  1 weimeilin  admin  540  5 15 12:28 test.js



5. 設定發生警告時,去執行 CLI, 選擇後按OK 就完成了!





當然你可以設定Error 發生幾次錯誤之後才寄送Mail。但都不是這次的重點。 所以先略過 ;p

完成之後,一旦JON Server達到警告的條件,就會去執行那隻CLI script, 相對的CLI 的script 會利用我們寫的程式去呼叫 shell 或是 perl 





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