tomcat日志catalina.out默认不会分割，随着运行时间越来越长,不仅查询日志麻烦，而且还会影响日志的写入速度，影响系统的正常使用，本文讲解如何使用cronolog工具对其进行分割。

1：下载cronolog

cronolog-1.6.2.tar.gz

2：安装cronolog

3：修改Tomcat的catalina.sh文件

（1）第一处

将

if [ -z "$CATALINA_OUT" ] ; then
 CATALINA_OUT="$CATALINA_BASE"/logs/catalina.out
fi

修改为

if [ -z "$CATALINA_OUT" ] ; then
 CATALINA_OUT="$CATALINA_BASE"/logs/catalina.%Y-%m-%d.out
fi

(2)第二处

注释 touch “$CATALINA_OUT”，约370行

# touch "$CATALINA_OUT"

(3)第三处

将

if [ "$1" = "-security" ] ; then
 if [ $have_tty -eq 1 ]; then
 echo "Using Security Manager"
 fi
 shift
 eval "\"$_RUNJAVA\"" "\"$LOGGING_CONFIG\"" $LOGGING_MANAGER $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="\"$CATALINA_TMPDIR\"" \
 org.apache.catalina.startup.Bootstrap "$@" start \
 >> "$CATALINA_OUT" 2>&1 "&"
 else
 eval "\"$_RUNJAVA\"" "\"$LOGGING_CONFIG\"" $LOGGING_MANAGER $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\"" \
 org.apache.catalina.startup.Bootstrap "$@" start \
 >> "$CATALINA_OUT" 2>&1 "&"
 fi

修改为：

 if [ "$1" = "-security" ] ; then
 if [ $have_tty -eq 1 ]; then
 echo "Using Security Manager"
 fi
 shift
 eval "\"$_RUNJAVA\"" "\"$LOGGING_CONFIG\"" $LOGGING_MANAGER $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="\"$CATALINA_TMPDIR\"" \
 org.apache.catalina.startup.Bootstrap "$@" start \
 2>&1 |/usr/local/sbin/cronolog "$CATALINA_OUT" &
 else
 eval "\"$_RUNJAVA\"" "\"$LOGGING_CONFIG\"" $LOGGING_MANAGER $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\"" \
 org.apache.catalina.startup.Bootstrap "$@" start \
 2>&1 |/usr/local/sbin/cronolog "$CATALINA_OUT" &
 fi

4：重启tomcat

可以看到tomcat的logs目录下，已经按日期生成了catalina日志文件。