Centos logrotate不每天轮换日志

Question

我有一个问题，我在 Centos7 中为 catalina.out 配置了每日 logrotation，但它没有旋转，如果强制运行 logrotate 它会旋转 catalina 但不是每天自动旋转。

logrotate.d/tomcat 配置文件：

/usr/local/tomcat7/logs/catalina.out
{
    daily
    rotate 30
    missingok
    compress
    copytruncate
}

logrotate.conf:

    # see "man logrotate" for details
# rotate log files daily
daily

# keep 4 weeks worth of backlogs
rotate 4

# create new (empty) log files after rotating old ones
create

# use date as a suffix of the rotated file
dateext

# uncomment this if you want your log files compressed
#compress

# RPM packages drop log rotation information into this directory
include /etc/logrotate.d

# no packages own wtmp and btmp -- we'll rotate them here
/var/log/wtmp {
    monthly
    create 0664 root utmp
        minsize 1M
    rotate 1
}

/var/log/btmp {
    missingok
    monthly
    create 0600 root utmp
    rotate 1
}


# system-specific logs may be also be configured here.

logrotate status/debug:

    rotating pattern: /usr/local/tomcat7/logs/catalina.out
 after 1 days (30 rotations)
empty log files are rotated, old logs are removed
considering log /usr/local/tomcat7/logs/catalina.out
  log does not need rotating (log has been already rotated)

"/usr/local/tomcat7/logs/catalina.out" 2019-8-5-9:25:18

Answer 1

在默认状态下 tomcat 使用 log4j

您应该在 /etc/tomcat/log4j.properties 处有一个文件，其中包含日志管理的配置。

默认配置是（取自测试盒）：

log4j.rootLogger=debug, R 
log4j.appender.R=org.apache.log4j.RollingFileAppender 
log4j.appender.R.File=${catalina.home}/logs/tomcat.log 
log4j.appender.R.MaxFileSize=10MB 
log4j.appender.R.MaxBackupIndex=10 
log4j.appender.R.layout=org.apache.log4j.PatternLayout 
log4j.appender.R.layout.ConversionPattern=%p %t %c - %m%n 
log4j.logger.org.apache.catalina=DEBUG, R
log4j.logger.org.apache.catalina.core.ContainerBase.[Catalina].[localhost]=DEBUG, R
log4j.logger.org.apache.catalina.core=DEBUG, R
log4j.logger.org.apache.catalina.session=DEBUG, R

基于该配置，当日志大小增长到 10MB 时，日志将自动轮换，并且最多保留 10 个旧日志。

您可以根据需要更改这些设置，并且有一些很好的指南 here and here 解释了所有选项，并展示了如何更改为可能对您的需求更有用的滚动附加程序。

log4j 也负责轮换，但如果你正在做类似 tail -f cat.out 的事情并且日志轮换，你将需要重新跟踪文件以继续观看它，否则它只会出现在中途停止（就像其他日志一样）

请记住删除您尝试通过 logrotate 应用的任何配置，以免以后出现问题！

要进行每日轮换，您需要使用这些设置；

DailyRollingFileAppender

DailyRollingFileAppender rotates log files based on frequency of time allowing customization upto minute. Date Patterns allowed as part of the Appender are as follows:
yyyy-MM Roll over to new log file beginning on first day of every month
yyyy-ww Roll over to new log file beginning on first day of every week
yyyy-MM-dd Roll over daily
yyyy-MM-dd-a Roll over on midday and midnight
yyyy-MM-dd-HH Roll over every hour
yyyy-MM-dd-HH-mm Roll over every minute

这将给出一个配置：

log4j.rootLogger=INFO, fileLogger
log4j.appender.fileLogger.layout=org.apache.log4j.PatternLayout
log4j.appender.fileLogger.layout.ConversionPattern=%d [%t] %-5p (%F:%L) - %m%n
log4j.appender.fileLogger.File=example.log
log4j.appender.fileLogger=org.apache.log4j.DailyRollingFileAppender
log4j.appender.fileLogger.datePattern='.'yyyy-MM-dd-HH-mm

Centos logrotate不每天轮换日志

Centos logrotate not rotating logs daily

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