1。问题
我在Tomcat中部署了一个webapp,发现它随机关机,时间从2、3小时到2、3天不等。 catalina.out
中的登录是:
26224 2015-06-10 13:59:04.110 {http-nio-8080-exec-3} INFO com.timediff.controller.user.UserProfileController#getUserHome - /user/profile/home done, curUid: 889
26225 10-Jun-2015 14:15:35.050 INFO [Thread-11] org.apache.coyote.AbstractProtocol.pause Pausing ProtocolHandler ["http-nio-8080"]
26226 10-Jun-2015 14:15:35.052 INFO [Thread-11] org.apache.coyote.AbstractProtocol.pause Pausing ProtocolHandler ["ajp-nio-8009"]
26227 10-Jun-2015 14:15:35.053 INFO [Thread-11] org.apache.catalina.core.StandardService.stopInternal Stopping service Catalina
26228 10-Jun-2015 14:15:35.058 INFO [localhost-startStop-2] org.springframework.web.context.support.XmlWebApplicationContext.doClose Closing WebApplicationContext for namespace 'timediff-dispatcher-servlet': startup date [Wed Jun 10 13:38:14 CST 2015]; root of context hierarchy
26229 10-Jun-2015 14:15:35.059 INFO [localhost-startStop-2] org.springframework.context.support.DefaultLifecycleProcessor.stop Stopping beans in phase 2147483647
26230 2015-06-10 14:15:35.061 {localhost-startStop-2} INFO org.quartz.core.QuartzScheduler#standby - Scheduler TimediffScheduler_$_iZu1skaofy1Z1433914696931 paused.
26231 10-Jun-2015 14:15:35.072 INFO [localhost-startStop-2] org.springframework.scheduling.quartz.SchedulerFactoryBean.destroy Shutting down Quartz Scheduler
26232 2015-06-10 14:15:35.072 {localhost-startStop-2} INFO org.quartz.core.QuartzScheduler#shutdown - Scheduler TimediffScheduler_$_iZu1skaofy1Z1433914696931 shutting down.
26233 2015-06-10 14:15:35.075 {localhost-startStop-2} INFO org.quartz.core.QuartzScheduler#standby - Scheduler TimediffScheduler_$_iZu1skaofy1Z1433914696931 paused.
26234 2015-06-10 14:15:35.077 {localhost-startStop-2} INFO org.quartz.core.QuartzScheduler#shutdown - Scheduler TimediffScheduler_$_iZu1skaofy1Z1433914696931 shutdown complete.
26235 10-Jun-2015 14:15:35.082 INFO [localhost-startStop-2] org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor.shutdown Shutting down ExecutorService 'quartzThreadPool'
26236 2015-06-10 14:15:35.103 {localhost-startStop-2} INFO com.timediff.listener.StopMemoryLeakListener#lambda$contextDestroyed$0 - driver: com.mysql.jdbc.Driver@7657b26d is de-registered.
26237 2015-06-10 14:15:35.104 {localhost-startStop-2} INFO com.timediff.listener.StopMemoryLeakListener#contextDestroyed - AbandonedConnectionCleanupThread shutdown.
26238 10-Jun-2015 14:15:35.150 INFO [Thread-11] org.apache.coyote.AbstractProtocol.stop Stopping ProtocolHandler ["http-nio-8080"]
26239 10-Jun-2015 14:15:35.152 INFO [Thread-11] org.apache.coyote.AbstractProtocol.stop Stopping ProtocolHandler ["ajp-nio-8009"]
26240 10-Jun-2015 14:15:35.154 INFO [Thread-11] org.apache.coyote.AbstractProtocol.destroy Destroying ProtocolHandler ["http-nio-8080"]
26241 10-Jun-2015 14:15:35.156 INFO [Thread-11] org.apache.coyote.AbstractProtocol.destroy Destroying ProtocolHandler ["ajp-nio-8009"]
在 stackoverflow 上,this question和 this question和我的情况很相似,但我还是迷迷糊糊了。
现在我将详细描述我的问题:
2。更多详情
2.1 tomcat和jdk版本
Tomcat: 8.0.22
JDK: 1.8.0_45
catalina.sh 中的 2.2 jvm 选项:
CATALINA_OPTS="-server -Xms1g -Xmx1g -XX:MaxMetaspaceSize=512m -Xmn512m
-XX:SurvivorRatio=8
-XX:+UseConcMarkSweepGC -XX:+CMSParallelRemarkEnabled
-XX:+UseCMSInitiatingOccupancyOnly
-XX:CMSInitiatingOccupancyFraction=70 -XX:+ScavengeBeforeFullGC
-XX:+CMSScavengeBeforeRemark
-XX:+PrintGCDateStamps -verbose:gc -XX:+PrintGCDetails
-Xloggc:/opt/logs/gc/timediff-gc.log
-XX:+UseGCLogFileRotation -XX:NumberOfGCLogFiles=10 -XX:GCLogFileSize=10M
-Dsun.net.inetaddr.ttl=120 -XX:+HeapDumpOnOutOfMemoryError
-XX:HeapDumpPath=/opt/logs/gc/timediff-oom.hprof
-Djava.rmi.server.hostname=**.**.**.**
-Dcom.sun.management.jmxremote.port=1099
-Dcom.sun.management.jmxremote.authenticate=false
-Dcom.sun.management.jmxremote.ssl=false"
2.3 在我的 webapp 中没有与 tomcat 中止相关的异常日志,我确定我从未调用过 System.exit(),也没有像这样的代码块:
try {
} catch(Exception e) {
// do nothing
}
2.4 而我实际上在 gc 日志中发现了 Allocation Failure:
2015-06-10T15:36:28.589+0800: 3099.795: [GC (Allocation Failure) 3099.795: [ParNew: 419780K->382K(471872K), 0.0125816 secs] 469721K->50348K(996160K), 0.0126820 secs] [Times: user=0.01 sys=0.00, real=0.01 secs]
2015-06-10T15:37:30.141+0800: 3161.347: [GC (Allocation Failure) 3161.347: [ParNew: 419838K->372K(471872K), 0.0062445 secs] 469804K->50338K(996160K), 0.0063629 secs] [Times: user=0.01 sys=0.00, real=0.01 secs]
2015-06-10T15:38:41.680+0800: 3232.886: [GC (Allocation Failure) 3232.886: [ParNew: 419828K->369K(471872K), 0.0064920 secs] 469794K->50356K(996160K), 0.0066009 secs] [Times: user=0.01 sys=0.00, real=0.01 secs]
2015-06-10T15:39:43.222+0800: 3294.428: [GC (Allocation Failure) 3294.428: [ParNew: 419825K->384K(471872K), 0.0058772 secs] 469812K->50372K(996160K), 0.0059823 secs] [Times: user=0.01 sys=0.00, real=0.01 secs]
2015-06-10T15:40:54.758+0800: 3365.964: [GC (Allocation Failure) 3365.964: [ParNew: 419840K->388K(471872K), 0.0056674 secs] 469828K->50395K(996160K), 0.0069850 secs] [Times: user=0.02 sys=0.00, real=0.00 secs]
我认为可能是这个原因,但 TOP 和 jvisualVM 的结果使它不清楚:
web@iZu1skaofy1Z:/usr/local/apache-tomcat-8.0.22/logs$ free -m
total used free shared buffers cached
Mem: 3951 3087 864 0 190 553
-/+ buffers/cache: 2343 1608
Swap: 0 0 0
top - 15:50:05 up 16 days, 5:11, 2 users, load average: 0.33, 0.17, 0.09
Tasks: 128 total, 2 running, 126 sleeping, 0 stopped, 0 zombie
%Cpu(s): 0.8 us, 0.5 sy, 0.0 ni, 98.5 id, 0.0 wa, 0.2 hi, 0.0 si, 0.0 st
KiB Mem: 4046820 total, 3161260 used, 885560 free, 194880 buffers
KiB Swap: 0 total, 0 used, 0 free. 566984 cached Mem
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
27307 web 20 0 2068604 865872 22048 S 0.7 21.4 20:20.28 java
16557 web 20 0 3680756 801708 13740 S 0.0 19.8 2:02.99 java
15597 mysql 20 0 1800972 526220 6636 S 0.0 13.0 36:26.08 mysqld
2.4 我在同一台服务器上部署了另一个tomcat,但是我更改了关闭端口和连接器端口,我认为它们不冲突。
我已经尽力了,可能是我在分析的过程中忘记了什么,请帮忙给我一些提示,在此先感谢!
update(2015-07-04):我运行tomcat时从web
用户切换到root
用户后,问题没有出现.所以我怀疑tomcat是不是因为用户权限被系统kill了,有知道的请告诉我,谢谢!
最佳答案
This answer (从你找到的一个问题)看起来不错。
有东西告诉 Tomcat 停止。而且因为当 Tomcat 以 root
运行时它不会发生,我认为原因是其他一些(非系统)进程(可能是脚本或 cron 作业)向 Tomcat 发送信号(可能是 SIGTERM
),例如 kill <tomcat pid>
.也许其他进程也以用户身份运行 web
- 这可以解释为什么该进程无法终止 root
的 Tomcat 。或者其他进程可能只是搜索要终止的进程,其中一个条件是“web
拥有的进程”。
我建议你仔细阅读用户的crontabs root
和 web
、系统范围的 crontab 和 /etc/cron.*/
中的所有内容文件夹。您还可以检查 web
是否拥有任何其他进程突然终止。从源代码构建 Tomcat,添加一些跟踪(如我提到的答案中所建议的),似乎是个好主意。
关于java - Tomcat8 使用 AbstractProtocol.pause 随机关闭,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/30759220/