syslog ip使用`rsyslog`范围到特定文件


8

我有许多Cisco / JunOS路由器和交换机,它们会将日志发送到使用的我的Debian服务器rsyslogd

如何rsyslogd根据其源IP地址配置将这些路由器/交换机日志发送到特定文件?我不想使用这些条目来污染一般的系统日志。

例如:

  • 芝加哥的所有路由器(源IP块:172.17.25.0/24)仅登录/var/log/net/chicago.log
  • 达拉斯(源IP块172.17.27.0/24)中的所有路由器仅登录/var/log/net/dallas.log
  • 删除所有APF-3-RCV_UNSUPP_MSG消息而不记录它们
  • 将172.17.4.4的日志发送到名为的文件 /var/log/net/firewall.log
  • 使用UDP端口514将防火墙日志转发到10.14.12.12

最后,这些日志应每天轮换最多30天并压缩。


注意:我在回答自己的问题

Answers:


13

rsyslogd 组态

/etc/rsyslogd.conf

# provides remote UDP syslog reception
$ModLoad imudp
$UDPServerRun 514

# If logging to an NFS mount, use these settings...
#    "OMFileFlushOnTXEnd off" avoids fsync on every write...
#     mount -o hard,rsize=32768,wsize=32768,noacl,noatime,nodiratime -t nfs
$OMFileIOBufferSize 768k
$OMFileAsyncWriting on
$OMFileFlushOnTXEnd off
$OMFileFlushInterval 10
$MainMsgQueueSize 100000


# kill all INTF-FLAP messages...
if $msg contains 'INTF-FLAP' then /dev/null
&~
## Cisco ACS Accounting...
if ($fromhost-ip=='172.17.16.20') and ($programname == 'CSCOacs_TACACS_Accounting') then /var/log/tacacs_acct.log
&~
## CiscoACS 5.4 TACACS Authentication
if ($fromhost-ip=='172.17.16.20') and ($programname == 'CSCOacs_Passed_Authentications') then /var/log/tacacs_auth.log
&~

# Logging for Chicago issues...
if $fromhost-ip startswith '172.17.25' then /var/log/net/chicago.log
& ~
# Logging for Dallas issues...
if $fromhost-ip startswith '172.17.27' then /var/log/net/dallas.log
& ~
# Logging for firewall...
if $fromhost-ip=='172.17.4.4' then @10.14.12.12
if $fromhost-ip=='172.17.4.4' then /var/log/net/firewall.log
& ~

每个&~条目都可以防止进入rsyslog.conf配置的其余部分。因此,我不会在中看到路由器syslog条目/var/log/messages

触摸所有系统日志文件:

  • touch /var/log/net/chicago.log
  • touch /var/log/net/dallas.log
  • touch /var/log/net/firewall.log

重新启动rsyslogd/etc/init.d/rsyslogd restart

日志旋转

/etc/logrotate.d/rsyslog

/var/log/net/*.log
{
        copytruncate
        rotate 30
        daily
        missingok
        dateext
        notifempty
        delaycompress
        create root 664 root root
        compress
        maxage 31
        sharedscripts
        lastaction
                # RHEL: Use "/sbin/service rsyslog restart"
                # Debian / Ubuntu: Use "invoke-rc.d rsyslog reload > /dev/null"
                invoke-rc.d rsyslog reload > /dev/null
        endscript
}

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