一、首先,配置syslogd的配置文件/etc/syslog.conf
在文件syslog.conf中添加:
复制代码 代码示例:
# Iptables logging
kern.debug /var/log/iptables
二、使用IPtables滚动日志
查看并确定logrotate的配置文件/etc/logrotate.conf内容:
复制代码 代码示例:
# see "man logrotate" for details
# rotate log files weekly weekly
# keep 4 weeks worth of backlogs rotate 4
# create new (empty) log files after rotating old ones create
# 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 -- we'll rotate them here /var/log/wtmp { monthly create 0664 root utmp rotate 1 }
# system-specific logs may be also be configured here.
然后,在syslog的滚动日志配置文件/etc/logrotate.d/syslog中,添加IPtables的日志文件/var/log/iptables:
复制代码 代码示例:
/var/log/iptables /var/log/messages /var/log/secure /var/log/maillog /var/log/spooler /var/log/boot.log /var/log/cron {
sharedscripts
postrotate
/bin/kill -HUP `cat /var/run/syslogd.pid 2> /dev/null` 2> /dev/null || true
endscript
}
最后,在logrotate中设置每天执行一次。
文件/etc/cron.daily/logrotate的内容如下:
复制代码 代码示例:
#!/bin/sh
/usr/sbin/logrotate /etc/logrotate.conf
EXITVALUE=$?
if [ $EXITVALUE != 0 ]; then
/usr/bin/logger -t logrotate "ALERT exited abnormally with [$EXITVALUE]"
fi
exit 0
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