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使用 nxlog 从事件日志中查询特定日志

tag-icon • tag-icon logging windows-event-log
使用 nxlog 从事件日志中查询特定日志

以下是我的 nxlog 配置

define ROOT C:\Program Files (x86)\nxlog
Moduledir %ROOT%\modules
CacheDir %ROOT%\data
Pidfile %ROOT%\data\nxlog.pid
SpoolDir %ROOT%\data
LogFile %ROOT%\data\nxlog.log
<Extension json>
    Module      xm_json
</Extension>
<Input internal>
        Module      im_internal
</Input>
<Input eventlog>
    Module  im_msvistalog
    Query   <QueryList>\
            <Query Id="0">\
            <Select Path="Security">*</Select>\
            </Query>\
            </QueryList>
    </Input>
<Output out>
    Module  om_tcp
    Host    localhost
    Port    3515
    Exec    $EventReceivedTime = integer($EventReceivedTime) / 1000000; \
            to_json();
</Output>
<Route 1>
    Path    eventlog, internal => out
</Route>

<Select Path="Security">*</Select>\->*从安全日志中获取所有内容，但我的要求是获取以 EventId - 4663 开头的特定日志。我该怎么做？请帮忙。谢谢。

答案1

对 $raw_event 进行正则表达式匹配有点丑陋和低效。

我建议使用以下形式：

Exec if string($EventID) !~ /^42/ drop()

另一种方法是使用 XML 事件选择：

Query <QueryList> \
           <Query Id="0">\
              <Select Path="Security">*[System[(EventID='4663')]]</Select>\
           </Query>\
      </QueryList>

尽管看起来 starts-with 匹配在这里不起作用：

XPath 1.0 限制：

Windows 事件日志支持 XPath 1.0 的子集。查询中可以使用的函数有限制。例如，您可以在查询中使用“position”、“Band”和“timediff”函数但其他功能如“starts-with”并且“包含” 目前不支持。

答案2

我不确定您的事件是否是 INFO|WARNING|ERROR 或者什么......但是这里......

Exec    if $raw_event !~ /INFO\s+4663/ drop();

快的，使用正则表达式...如果我的 $raw_event 等于“2013-11-18 15:23:02 INFO 2013-12-18 15:23:01 ahost.adomain.local INFO 62464 UVD 信息“我将使用以下内容来 DROP 事件：

Exec    if $raw_event =~ /INFO\s+62464/ drop();

简短示例，您需要使用 RegEx 来准确找到访问 $raw_event 变量时所需的内容。请在测试后删除/调整“log_info”。

Exec if ($raw_event =~ /INFO\s+62464/) \
    { \
        log_info('Found amdkmdag EventID 62464, dropping it.'); \
        drop(); \
    }

完整示例， 其中我使用 nxlog-ce（Windows）连接到 GELF 格式的 Debian/Graylog SysLog 服务器。

## This is a basic configuration file for Windows Server 2008 * 2012 
## to GrayLog2 with GELF support and filtering.
## See the nxlog reference manual about the configuration options. 
## It should be installed locally and is also available
## online at http://nxlog.org/nxlog-docs/en/nxlog-reference-manual.html

## Please set the ROOT to the folder your nxlog was installed into,
## otherwise it will not start.

define ROOT C:\Program Files (x86)\nxlog
# define ROOT C:\Program Files\nxlog

Moduledir %ROOT%\modules
CacheDir %ROOT%\data
Pidfile %ROOT%\data\nxlog.pid
SpoolDir %ROOT%\data
LogFile %ROOT%\data\nxlog.log

<Extension gelf>
    Module xm_gelf
</Extension>

<Input pr_mseventlog>
    Module      im_msvistalog
    ReadFromLast    True
    # http://msdn.microsoft.com/en-us/library/aa385231.aspx
    # http://msdn.microsoft.com/en-us/library/ff604025(v=office.14).aspx
    # Level 1 (ID=30  Critical)     severity level events
    # Level 2 (ID=40  Error)        severity level events
    # Level 3 (ID=50  Warning)      severity level events
    # Level 4 (ID=80  Information)  severity level events
    # Level 5 (ID=100 Verbose)      severity level events
    # All channels are included by default which are listed in the registry under these:
    # HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\WINEVT\Channels 
    # HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\eventlog\System
    #
    # <Select Path='Key Management Service'>*</Select></Query>\
    # <Select Path='Internet Explorer'>*</Select></Query>\
    # <Select Path='HardwareEvents'>*</Select></Query>\
    #
    Query   <QueryList>\
        <Query Id="0">\
            <Select Path="Security">*</Select>\
            <Select Path="System">*[System/Level=4]</Select>\
            <Select Path="Application">*[Application/Level=2]</Select>\
            <Select Path="Setup">*[System/Level=3]</Select>\
            <Select Path='Windows PowerShell'>*</Select>\
        </Query>\
    </QueryList>

    # REGEX EXAMPLES:
    # "\s" equals one white space character, and ".*" equals any one char 
    # Line Contains both "bubble" and "gum"
    #   Search pattern: ^(?=.*?\bbubble\b)(?=.*?\bgum\b).*
    # Line does Not Contain "boy"
    #   Search pattern: ^(?!.*boy).*
    # Line Contains "bubble" but Neither "gum" Nor "bath"
    #   Search pattern: ^(?=.*bubble)(?!.*gum)(?!.*bath).*

    # Uncomment next line to view all logs, we can view output to help 
    # create the regex, next line shows my $raw_event data to parse:
    # 2013-11-18 15:23:02 INFO 2013-12-18 15:23:01 ahost.adomain.local INFO 62464 UVD Information
    # Exec   log_info($raw_event) ;
    Exec if ($raw_event =~ /INFO\s+62464/) drop();

</Input>

<Output out>
    Module      om_udp
    Host        10.247.x.x
    Port        12201
    OutputType  GELF
</Output>

<Route 1>
    Path    pr_mseventlog  => out
</Route>

答案3

您很可能在这里找到问题的答案：

http://www.mail-archive.com/[电子邮件保护]/msg00082.html

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