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系统日志复制所有内容

tag-icon • tag-icon debian syslog rsyslog logrotate rsyslogd
系统日志复制所有内容

我有一个问题，打印到系统日志文件的任何内容都显示为重复。我在网络上的搜索显示包含/etc/rsyslog.conf应该避免此类事情的属性RepeatedMsgReduction on 不幸的是它对我的机器没有影响。

经过深入调查，我发现导致重复的原因：我在 rsyslog.conf 中添加了两行来处理日志大小轮换。我的意思是他们使用按大小旋转系统日志

$outchannel syslog_rotation,/var/log/syslog,2621440,/root/scripts/systemlogs.sh

*.* :omfile:$syslog_rotation

我知道你会问为什么不在 logrotate 上使用“maxsize”属性，但在我检查之后它在我的机器上也不起作用。

systemlogs.sh的内容如下：

#!/bin/bash
/usr/sbin/logrotate -f /etc/logrotate.d/rsyslog

我将展示一个包含重复项的系统日志示例：

5,1,29/06/2017 16:24:21.319213,SCR-172D2A,PM[1455]:, Sent 'Farm ID set' to RF module A. Farm ID = 0xFFFFFF
5,1,29/06/2017 16:24:21.319213,SCR-172D2A,PM[1455]:, Sent 'Farm ID set' to RF module A. Farm ID = 0xFFFFFF
6,0,29/06/2017 16:24:21.322416,SCR-172D2A,kernel:,RFM-B: Radio set RF channel=19
6,0,29/06/2017 16:24:21.322463,SCR-172D2A,kernel:,RFM-A: Radio set RF channel=19
6,0,29/06/2017 16:24:21.322479,SCR-172D2A,kernel:,RFM-B: Set Farm ID=FF FF FF
6,0,29/06/2017 16:24:21.322416,SCR-172D2A,kernel:,RFM-B: Radio set RF channel=19
6,0,29/06/2017 16:24:21.322463,SCR-172D2A,kernel:,RFM-A: Radio set RF channel=19
6,0,29/06/2017 16:24:21.322479,SCR-172D2A,kernel:,RFM-B: Set Farm ID=FF FF FF
6,0,29/06/2017 16:24:21.322493,SCR-172D2A,kernel:,RFM-A: Set Farm ID=FF FF FF
6,0,29/06/2017 16:24:21.322493,SCR-172D2A,kernel:,RFM-A: Set Farm ID=FF FF FF
6,1,29/06/2017 16:24:26.352466,SCR-172D2A,CM[1468]:, pm service user ip=AC130130
6,1,29/06/2017 16:24:26.352466,SCR-172D2A,CM[1468]:, pm service user ip=AC130130
6,1,29/06/2017 16:24:26.352544,SCR-172D2A,CM[1468]:, pm service user port=2500
6,1,29/06/2017 16:24:26.352596,SCR-172D2A,CM[1468]:, configured=true
6,1,29/06/2017 16:24:26.352544,SCR-172D2A,CM[1468]:, pm service user port=2500
6,1,29/06/2017 16:24:26.352596,SCR-172D2A,CM[1468]:, configured=true
6,1,29/06/2017 16:24:26.363623,SCR-172D2A,CM[1468]:, pm service user ip=AC130153
6,1,29/06/2017 16:24:26.363623,SCR-172D2A,CM[1468]:, pm service user ip=AC130153
6,1,29/06/2017 16:24:26.363692,SCR-172D2A,CM[1468]:, pm service user port=2500
6,1,29/06/2017 16:24:26.363743,SCR-172D2A,CM[1468]:, configured=true
6,1,29/06/2017 16:24:26.363692,SCR-172D2A,CM[1468]:, pm service user port=2500
6,1,29/06/2017 16:24:26.363743,SCR-172D2A,CM[1468]:, configured=true

rsyslog.conf 的内容是：

#################
#### MODULES ####
#################

$ModLoad imuxsock # provides support for local system logging
$ModLoad imklog   # provides kernel logging support
#$ModLoad immark  # provides --MARK-- message capability
# provides UDP syslog reception
#$ModLoad imudp
#$UDPServerRun 514
# provides TCP syslog reception
#$ModLoad imtcp
#$InputTCPServerRun 514
###########################
#### GLOBAL DIRECTIVES ####
###########################
#

# Use traditional timestamp format.
# To enable high precision timestamps, comment out the following line.
#
$ActionFileDefaultTemplate RSYSLOG_TraditionalFileFormat
$template precise,"%syslogpriority%,%syslogfacility%,%timegenerated%,%HOSTNAME%,%syslogtag%,%msg%\n"
$ActionFileDefaultTemplate precise
#
# Set the default permissions for all log files.
#
$FileOwner root
$FileGroup adm
$FileCreateMode 0640
$DirCreateMode 0755
$Umask 0022
#
# Where to place spool and state files
#
$WorkDirectory /var/spool/rsyslog
#
# Include all config files in /etc/rsyslog.d/
#

$IncludeConfig /etc/rsyslog.d/*.conf
###############
#### RULES ####
###############
#
# First some standard log files.  Log by facility.
#
auth,authpriv.*                 /var/log/auth.log
*.*;auth,authpriv.none          -/var/log/syslog
#cron.*                         /var/log/cron.log
daemon.*                        -/var/log/daemon.log
kern.*                          -/var/log/kern.log
lpr.*                           -/var/log/lpr.log
mail.*                          -/var/log/mail.log
user.*                          -/var/log/user.log
#

# Logging for the mail system.  Split it up so that
# it is easy to write scripts to parse these files.
#
mail.info                       -/var/log/mail.info
mail.warn                       -/var/log/mail.warn
mail.err                        /var/log/mail.err
#
# Logging for INN news system.
#
news.crit                       /var/log/news/news.crit
news.err                        /var/log/news/news.err
news.notice                     -/var/log/news/news.notice
#
# Some "catch-all" log files.
#
*.=debug;\
        auth,authpriv.none;\
        news.none;mail.none     -/var/log/debug
*.=info;*.=notice;*.=warn;\
        auth,authpriv.none;\
        cron,daemon.none;\
        mail,news.none          -/var/log/messages
#
# Emergencies are sent to everybody logged in.
#
*.emerg                         :omusrmsg:*

答案1

@user192526的评论是阻止这种现象的关键

评论这一行.=信息；.=通知；*.=警告；出，意味着 #*.=info;*.=notice;*.=warn;。重新启动 rsyslog。

但这个问题的完整答案是全部/etc/rsyslog.conf针对每个系统消息评估文件中的规则 。所以来自记录设备的消息kern

kern.*                          -/var/log/kern.log

继续沿着文件找到下一条规则

*.=info;*.=notice;*.=warn;\
        auth,authpriv.none;\
        cron,daemon.none;\
        mail,news.none          -/var/log/messages

/var/log/messages也可以登录到文件中。

只有明确排除的设施（例如，daemon.none不会符合规则）也不会再次登录/var/log/messages。

答案2

我有同样的问题，但原因不同。在我使用的Debian 11发行版中，/etc/rsyslog.conf中有非常相似的内容/etc/rsyslog.d/50-default.conf。由于最后一个命令包含第一个命令，因此大多数命令都加倍了。

答案3

我在 Debian 11 的服务器上遇到了同样的问题，其中的大多数条目/var/log/syslog都是重复的。通过检查该文件，/etc/rsyslog.conf我发现这些规则在文件中重复，因为 中的一组配置文件/etc/rsyslog.d/*.conf（特别是文件50-default.conf）已经调用了这些规则。我取消了文件中的行50-default.conf并验证规则是否满足我在日志中想要的内容，这使文件中的规则优先，/etc/rsyslog.conf从而解决了问题。

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