linux - 动态 Rsyslog 模板

Question

我的 Rsyslog 配置如下所示:

template(name="extract" type="string" string="%msg:R:/(?:"(level)":")((\\"|

[^"])*)"/g–end%")

if $InputFileTag == 'esblog' then {
    set $!level = exec_template("extract");
} else {
    set $!level = $syslogseverity-text;
}

template(name="json_lines" type="list") {
    constant(value="{")
      constant(value="\"@timestamp\":\"")     property(name="timereported" dateFormat="rfc3339")
      constant(value="\",\"host\":\"")        property(name="hostname")
      constant(value="\",\"json.level\":\"")    property(name="$!level" format="json")
      constant(value="\",\"facility\":\"")    property(name="syslogfacility-text")
      constant(value="\",\"tag\":\"")   property(name="syslogtag" format="json")
      constant(value="\",\"message\":\"")    property(name="msg" format="json")
    constant(value="\"}")
}

基本上，如果源标签是 esblog，我想使用这个正则表达式，从“extract”中提取日志消息的严重性。否则我想使用默认的严重性。然后在 json.level 标签内使用该变量，这样我在传出消息上只需要一个模板。但还没有运气让它发挥作用。

使用正则表达式的示例消息:https://regex101.com/r/lN4tD4/1

错误日志

0341.407068000:main thread    : error: can not find regex end in: '(?:"level":")(\"|[^"]*)"–end%'
0341.407084000:main thread    : PROP_INVALID for name ''
0341.407097000:main thread    : Called LogMsg, msg: error during parsing file /etc/rsyslog.conf, on or before line 32: invalid property ''
0341.407195000:main thread    : Called LogMsg, msg: error during parsing file /etc/rsyslog.conf, on or before line 32: error processing template object
0341.407350000:main thread    : Called LogMsg, msg: error during parsing file /etc/rsyslog.conf, on or before line 33: exec_template(): template 'extract' 

Answer 1

正则表达式只需要更改。

template(name="extract" type="string" string="%msg:R,ERE,2,DFLT:(\"level\":\")(\\\"|[^\"]*)\"--end%")


if $programname contains "esb-log" then {
    set $!level = exec_template("extract");
} else {
    set $!level = $syslogseverity-text;
}

在线 Rsyslog 正则表达式工具:http://www.rsyslog.com/regex/