![没有内核消息记录到 kern.log](https://linux22.com/image/1420935/%E6%B2%A1%E6%9C%89%E5%86%85%E6%A0%B8%E6%B6%88%E6%81%AF%E8%AE%B0%E5%BD%95%E5%88%B0%20kern.log.png)
我正在尝试配置 rsyslog。最终,我希望有一个丢弃数据包的日志文件,但我无法让 rsyslog 正确记录。
/etc/rsyslog.conf
看起来像这样:
# /etc/rsyslog.conf Configuration file for rsyslog.
#
# For more information see
# /usr/share/doc/rsyslog-doc/html/rsyslog_conf.html
#
# Default logging rules can be found in /etc/rsyslog.d/50-default.conf
#################
#### 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
# Filter duplicated messages
$RepeatedMsgReduction on
#
# Set the default permissions for all log files.
#
$FileOwner syslog
$FileGroup adm
$FileCreateMode 0640
$DirCreateMode 0755
$Umask 0022
$PrivDropToUser syslog
$PrivDropToGroup syslog
#
# Where to place spool and state files
#
$WorkDirectory /var/spool/rsyslog
#
# Include all config files in /etc/rsyslog.d/
#
$IncludeConfig /etc/rsyslog.d/*.conf
/etc/rsyslog.d/50-default.conf
看起来像这样:
# Default rules for rsyslog.
#
# For more information see rsyslog.conf(5) and /etc/rsyslog.conf
#
# 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:*
#
# I like to have messages displayed on the console, but only on a virtual
# console I usually leave idle.
#
#daemon,mail.*;\
# news.=crit;news.=err;news.=notice;\
# *.=debug;*.=info;\
# *.=notice;*.=warn /dev/tty8
# The named pipe /dev/xconsole is for the `xconsole' utility. To use it,
# you must invoke `xconsole' with the `-file' option:
#
# $ xconsole -file /dev/xconsole [...]
#
# NOTE: adjust the list below, or you'll go crazy if you have a reasonably
# busy site..
#
daemon.*;mail.*;\
news.err;\
*.=debug;*.=info;\
*.=notice;*.=warn |/dev/xconsole
据我所知,它将kern.* -/var/log/kern.log
所有类型的内核消息定向到文件/var/log/kern.log
。但是,发出命令时logger -p kern.info "kern.info: test"
/var/log/kern.log
仍为空。我不确定如何继续,因为测试消息确实出现在/var/log/syslog
答案1
您的 rsyslog.conf 没有加载用于读取内核日志的输入模块。相关行在那里,但它被注释掉了,所以 rsyslog 会忽略它:
$ModLoad imuxsock # provides support for local system logging
#$ModLoad imklog # provides kernel logging support
#
从 imklog 行开头删除,然后重新启动 rsyslogd。