使用 rsyslog 将 syslog 消息解析为单独的 MySQL 表

Question

开箱即用的rsyslog会将所有内容转储到SystemEvents`Syslog 数据库中的表中（如果您使用提供的默认架构）。我想使用正则表达式将入站消息过滤到单独的数据库表中。

我玩过这个，但我很难找出实现这一点的最佳方法（甚至是一种起作用的方法）。

在我的 rsyslog.conf 中：

$template wireless, \
 "insert into RogueAPs \
 (ReceivedAt, DeviceReportedTime, Facility, Priority, FromHost, Message) \
 VALUES('%timegenerated%', '%timereported%', '%syslogfacility%', '%syslogpriority%', '%fromhost-ip%', '%msg%');", \ 
 stdsql

if $msg contains 'subtype=wireless' then :ommysql:127.0.0.1,Syslog,dbusername,dbpassword;wireless

*.* :ommysql:127.0.0.1,Syslog,dbusername,dbpassword

这是我最近的尝试，但我被卡住了。

（RogueAPs 表只是 rsyslog 附带的默认 SystemEvents 表的克隆）

---

版本信息：

shell# /usr/local/sbin/rsyslogd -v
rsyslogd 5.5.5, compiled with:
        FEATURE_REGEXP:                         Yes
        FEATURE_LARGEFILE:                      No
        FEATURE_NETZIP (message compression):   Yes
        GSSAPI Kerberos 5 support:              No
        FEATURE_DEBUG (debug build, slow code): No
        Atomic operations supported:            Yes
        Runtime Instrumentation (slow code):    No

See http://www.rsyslog.com for more information.

Answer 1

通过查看本教程，我发现没有什么区别。

但是看一下rsyslog 的模板文档，根据参数的设置，似乎与 mysql 存在差异NO_BACKSLASH_ESCAPES。

来自文档：

sql - format the string suitable for a SQL statement in MySQL format. This will 
replace single quotes ("'") and the backslash character by their backslash-escaped
counterpart ("\'" and "\\") inside each field. Please note that in MySQL
configuration, the NO_BACKSLASH_ESCAPES mode must be turned off for this format to
work (this is the default).

stdsql - format the string suitable for a SQL statement that is to be sent to a
standards-compliant sql server. This will replace single quotes ("'") by two single
quotes ("''") inside each field. You must use stdsql together with MySQL if in MySQL
configuration the NO_BACKSLASH_ESCAPES is turned on.