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电梯直达

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发表于 2013-05-16 10:17 |只看该作者 |倒序浏览

本帖最后由 signmem 于 2013-05-16 14:38 编辑

现在公司有一堆 tomcat 7 server,  有时候 tomcat 7会 down 机, 重启一下就好了, (环境都是 linux )

我想了解一下, tomcat 7 是否可以像 apache 一定定义 error_log,  或者定义一些 down 机相关的报错日志, 令下次 down 机也有个文件可以分析一下.

当前, 可用日志有

-r--r-- 1 root root  349 May 10 11:37 catalina.2013-05-10.log
-rw-r--r-- 1 root root 787K May 15 15:49 catalina.out
-rw-r--r-- 1 root root 0 Mar 20 16:08 host-manager.2013-03-20.log
-rw-r--r-- 1 root root  526 Mar 20 16:18 localhost.2013-03-20.log
-rw-r--r-- 1 root root  54K May 16 10:15 localhost_access_log.2013-05-16.txt
-rw-r--r-- 1 root root 0 Mar 20 16:08 manager.2013-03-20.log

有好的建议吗?

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rdcwayx

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发表于 2013-05-16 14:16 |只看该作者

catalina.out 就可以看作 error log, 但是你没有激活 log rotate.

有两个小工具可以用：

1. rotatelogs
http://httpd.apache.org/docs/2.2/programs/rotatelogs.html

按天数改名
CustomLog "|bin/rotatelogs -l /var/logs/logfile.%Y.%m.%d 86400" common
This creates the files /var/logs/logfile.yyyy.mm.dd where yyyy is the year, mm is the month, and dd is the day of the month. Logging will switch to a new file every day at midnight, local time.

按日志文件大小改名
CustomLog "|bin/rotatelogs /var/logs/logfile 500M" common
This configuration will rotate the logfile whenever it reaches a size of 500 megabytes.

按日志大小改名，并且附上时间。
ErrorLog "|bin/rotatelogs /var/logs/errorlog.%Y-%m-%d-%H_%M_%S 500M"
This configuration will rotate the error logfile whenever it reaches a size of 500 megabytes, and the suffix to the logfile name will be created of the form errorlog.YYYY-mm-dd-HH_MM_SS.

2. cronolog
http://www.cronolog.org/

我用第二个工具做例子：

编辑 $TOMCAT_HOME/bin/catalina.sh，每天凌晨自动对 catalina.out 改名找到下面这段语句：

  if [ "$1" = "-security" ] ; then
if [ $have_tty -eq 1 ]; then
   echo "Using Security Manager"
fi
shift
"$_RUNJAVA" "$LOGGING_CONFIG" $JAVA_OPTS $CATALINA_OPTS \
   -Djava.endorsed.dirs="$JAVA_ENDORSED_DIRS" -classpath "$CLASSPATH" \
   -Djava.security.manager \
   -Djava.security.policy=="$CATALINA_BASE"/conf/catalina.policy \
   -Dcatalina.base="$CATALINA_BASE" \
   -Dcatalina.home="$CATALINA_HOME" \
   -Djava.io.tmpdir="$CATALINA_TMPDIR" \
      -Dfile.encoding=ISO-8859-1 \
   org.apache.catalina.startup.Bootstrap "$@" start 2>&1 \
   | /usr/bin/cronolog "$CATALINA_HOME"/logs/catalina.out.%Y-%m-%d.log >> /dev/null &

  else
"$_RUNJAVA" "$LOGGING_CONFIG" $JAVA_OPTS $CATALINA_OPTS \
   -Djava.endorsed.dirs="$JAVA_ENDORSED_DIRS" -classpath "$CLASSPATH" \
   -Dcatalina.base="$CATALINA_BASE" \
   -Dcatalina.home="$CATALINA_HOME" \
   -Djava.io.tmpdir="$CATALINA_TMPDIR" \
      -Dfile.encoding=ISO-8859-1 \
   org.apache.catalina.startup.Bootstrap "$@" start 2>&1 \
   | /usr/bin/cronolog "$CATALINA_HOME"/logs/catalina.out.%Y-%m-%d.log >> /dev/null &
fi