Glassfish 4服务器意外停止 [英] Glassfish 4 server stops unexpectedly

问题描述

我是GlassFish的新手，一般来说是应用程序服务器。我有一个运行Ubuntu的Amazon EC2实例，并安装了GlassFish 4.它启动时没有问题，但一段时间后GlassFish服务器自行关闭。我已经查看了server.log，但一切看起来很正常，并且没有描述任何故障或关闭的条目。任何关于可能是什么原因的输入，或者我应该寻找什么线索？ 我正面对完全相同的情况。我怀疑是因为JVM耗尽内存，因为免费的EC2实例有一个600 MB（ cat / proc / meminfo 来验证）。为了寻找线索，我为Glassfish域打开了JVM日志记录，为此，我在< domain> /config/domain.xml 中为JVM参数添加了以下行： ：

 < jvm-options> -XX：LogFile = $ {com.sun.aas.instanceRoot} / logs / jvm的.log< / JVM-选项> 
< jvm-options> -XX：+ LogVMOutput< / jvm-options> 
  

后来当Glassfish关闭时， jvm.log 包含大量消息，如下所示：

 < dependency_failed type ='unique_concrete_method'ctxk ='java / util / ArrayList 'x ='java / util / ArrayList iterator（）Ljava / util / Iterator;'witness ='javax / faces / component / UIComponentBase $ ChildrenList'stamp ='13211.267'/> 
< dependency_failed type ='unique_concrete_method'ctxk ='java / util / ArrayList'x ='java / util / ArrayList iterator（）Ljava / util / Iterator;'witness ='javax / faces / component / UIComponentBase $ ChildrenList'stamp ='13211.267'/> 
< dependency_failed type ='unique_concrete_method'ctxk ='java / util / ArrayList'x ='java / util / ArrayList iterator（）Ljava / util / Iterator;'witness ='javax / faces / component / UIComponentBase $ ChildrenList'stamp ='13211.267'/> 
  

我从来没有发现他们真正的意思，但是我在这里张贴他们以防别人拿着

然后，最后我查看了 / var / log / syslog （the the same road as me and googles for them。）一个我发现实际上是命名为 syslog.1 ），瞧！我得到了确认JVM进程耗尽内存并被杀害：

  Dec 20 07:44:44 ip-172- 31-33-222内核：[1518108.211801]内存不足：杀死进程22248（java）得分743或牺牲子
 Dec 20 07:44:44 ip-172-31-33-222 kernel：[1518108.211833]杀死进程22248（java）total-vm：1622220kB，anon-rss：447752kB，file-rss：0kB 
  

在我看来，增加交换空间应该可以解决问题。事实证明，在EC2交换空间默认为0，所以我分配了1 GB，请参阅如何将交换添加到EC2实例？

该服务器每天都会崩溃，但交换时却没有几周后就会崩溃。

I'm new to GlassFish, and to application servers in general. I have an Amazon EC2 instance running Ubuntu and have installed GlassFish 4. It starts up without problems, but after a while the GlassFish server just shuts down all by itself. I have looked through server.log, but everything seems normal, and there are no entries describing any failures or shut down. Any input on what can be the cause, or where I should look to find any clues?

解决方案

I am facing the exact same situation. I suspected the reason was that JVM ran out of RAM, as the free EC2 instance has a niggard 600 MB (cat /proc/meminfo to verify). To look for clues I turned on JVM logging for Glassfish domain, in order to do so I added the following lines to JVM parameters in <domain>/config/domain.xml:

<jvm-options>-XX:LogFile=${com.sun.aas.instanceRoot}/logs/jvm.log</jvm-options>
<jvm-options>-XX:+LogVMOutput</jvm-options>

Later when Glassfish shut down, the jvm.log contained lots of messages like the following:

<dependency_failed type='unique_concrete_method' ctxk='java/util/ArrayList' x='java/util/ArrayList iterator ()Ljava/util/Iterator;' witness='javax/faces/component/UIComponentBase$ChildrenList' stamp='13211.267'/>
<dependency_failed type='unique_concrete_method' ctxk='java/util/ArrayList' x='java/util/ArrayList iterator ()Ljava/util/Iterator;' witness='javax/faces/component/UIComponentBase$ChildrenList' stamp='13211.267'/>
<dependency_failed type='unique_concrete_method' ctxk='java/util/ArrayList' x='java/util/ArrayList iterator ()Ljava/util/Iterator;' witness='javax/faces/component/UIComponentBase$ChildrenList' stamp='13211.267'/>

I never found out what they really meant, but I'm posting them here in case someone takes the same road as me and googles for them.

Then finally I looked in /var/log/syslog (the one I found was actually named syslog.1), and voila! I got the confirmation that JVM process ran out of memory and was killed:

Dec 20 07:44:44 ip-172-31-33-222 kernel: [1518108.211801] Out of memory: Kill process 22248 (java) score 743 or sacrifice child
Dec 20 07:44:44 ip-172-31-33-222 kernel: [1518108.211833] Killed process 22248 (java) total-vm:1622220kB, anon-rss:447752kB, file-rss:0kB

It seems to me that increasing swap space should fix the problem. It turns out on EC2 swap space is 0 by default, so I allocated 1 GB, see How do you add swap to an EC2 instance?

The server used to crash on a daily basis, but with swap on it hasn't crashed in weeks.

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