使用logstash解析包含python回溯的日志_Python_Logstash_Logstash Grok_Logstash Configuration

使用logstash解析包含python回溯的日志

python logstash

使用logstash解析包含python回溯的日志,python,logstash,logstash-grok,logstash-configuration,Python,Logstash,Logstash Grok,Logstash Configuration,我一直在尝试使用logstash解析python回溯日志。我的日志如下所示： [pid: 26422|app: 0|req: 73/73] 192.168.1.1 () {34 vars in 592 bytes} [Wed Feb 18 13:35:55 2015] GET /data => generated 2538923 bytes in 4078 msecs (HTTP/1.1 200) 2 headers in 85 bytes (1 switches on core 0) T

我一直在尝试使用logstash解析python回溯日志。我的日志如下所示：

[pid: 26422|app: 0|req: 73/73] 192.168.1.1 () {34 vars in 592 bytes} [Wed Feb 18 13:35:55 2015] GET /data => generated 2538923 bytes in 4078 msecs (HTTP/1.1 200) 2 headers in 85 bytes (1 switches on core 0)
Traceback (most recent call last):
  File "/var/www/analytics/parser.py", line 257, in parselogfile
    parselogline(basedir, lne)
  File "/var/www/analytics/parser.py", line 157, in parselogline
    pval = understandpost(parts[3])
  File "/var/www/analytics/parser.py", line 98, in understandpost
    val = json.loads(dct["events"])
  File "/usr/lib/python2.7/json/__init__.py", line 338, in loads
    return _default_decoder.decode(s)
  File "/usr/lib/python2.7/json/decoder.py", line 366, in decode
    obj, end = self.raw_decode(s, idx=_w(s, 0).end())
  File "/usr/lib/python2.7/json/decoder.py", line 382, in raw_decode
    obj, end = self.scan_once(s, idx)
ValueError: Unterminated string starting at: line 1 column 355 (char 354)

filter {

    multiline {
        pattern => "^Traceback"
        what => "previous"
    }

    multiline {
        pattern => "^ "
        what => "previous"
    }


    grok {
        match => [
            "message", "\[pid\: %{NUMBER:process_id:int}\|app: 0\|req: %{NUMBER}/%{NUMBER}\] %{IPORHOST:clientip} \(\) \{%{NUMBER:vars:int} vars in %{NUMBER:bytes:int} bytes\} \[%{GREEDYDATA:timestamp}\] %{WORD:method} /%{GREEDYDATA:referrer} \=\> generated %{NUMBER:generated_bytes:int} bytes in %{NUMBER} msecs \(HTTP/%{NUMBER} %{NUMBER:status_code:int}\) %{NUMBER:headers:int} headers in %{NUMBER:header_bytes:int} bytes \(%{NUMBER:switches:int} switches on core %{NUMBER:core:int}\)%{GREEDYDATA:traceback}"
            ]
    }

    if "_grokparsefailure" in [tags] {
        multiline {
            pattern => "^.*$"
            what => "previous"
            negate => "true"
        }
    }

    if "_grokparsefailure" in [tags] {
        grok {
            match => [
                  "message", "\[pid\: %{NUMBER:process_id:int}\|app: 0\|req: %{NUMBER}/%{NUMBER}\] %{IPORHOST:clientip} \(\) \{%{NUMBER:vars:int} vars in %{NUMBER:bytes:int} bytes\} \[%{GREEDYDATA:timestamp}\] %{WORD:method} /%{GREEDYDATA:referrer} \=\> generated %{NUMBER:generated_bytes:int} bytes in %{NUMBER} msecs \(HTTP/%{NUMBER} %{NUMBER:status_code:int}\) %{NUMBER:headers:int} headers in %{NUMBER:header_bytes:int} bytes \(%{NUMBER:switches:int} switches on core %{NUMBER:core:int}\)%{GREEDYDATA:traceback}"
        ]
            remove_tag => ["_grokparsefailure"]
        }
    }
}

filter {

    multiline {
        pattern => "^[^\[]"
        what => "previous"
    }



    grok {
        match => [
            "message", "\[pid\: %{NUMBER:process_id:int}\|app: 0\|req: %{NUMBER}/%{NUMBER}\] %{IPORHOST:clientip} \(\) \{%{NUMBER:vars:int} vars in %{NUMBER:bytes:int} bytes\} \[%{GREEDYDATA:timestamp}\] %{WORD:method} /%{GREEDYDATA:referrer} \=\> generated %{NUMBER:generated_bytes:int} bytes in %{NUMBER} msecs \(HTTP/%{NUMBER} %{NUMBER:status_code:int}\) %{NUMBER:headers:int} headers in %{NUMBER:header_bytes:int} bytes \(%{NUMBER:switches:int} switches on core %{NUMBER:core:int}\)%{GREEDYDATA:traceback}"
        ]
    }

    if "_grokparsefailure" in [tags] {
        grok {
            match => [
            "message", "\[pid\: %{NUMBER:process_id:int}\|app: 0\|req: %{NUMBER}/%{NUMBER}\] %{IPORHOST:clientip} \(\) \{%{NUMBER:vars:int} vars in %{NUMBER:bytes:int} bytes\} \[%{GREEDYDATA:timestamp}\] %{WORD:method} /%{GREEDYDATA:referrer} \=\> generated %{NUMBER:generated_bytes:int} bytes in %{NUMBER} msecs \(HTTP/%{NUMBER} %{NUMBER:status_code:int}\) %{NUMBER:headers:int} headers in %{NUMBER:header_bytes:int} bytes \(%{NUMBER:switches:int} switches on core %{NUMBER:core:int}\)"
                ]
            remove_tag => ["_grokparsefailure"]
        }
    }

    else {
        mutate {
            convert => {"traceback" => "string"}
        }
    }

    date {
        match => ["timestamp", "dd/MM/YYYY:HH:MM:ss Z"]
        locale => en
    }
    geoip {
        source => "clientip"
    }
    useragent {
        source => "agent"
        target => "Useragent"
    }
}

        grok {
            match => [
            "message", "\[pid\: %{NUMBER:process_id:int}\|app: 0\|req: %{NUMBER}/%{NUMBER}\] %{IPORHOST:clientip} \(\) \{%{NUMBER:vars:int} vars in %{NUMBER:bytes:int} bytes\} \[%{GREEDYDATA:timestamp}\] %{WORD:method} /%{GREEDYDATA:referrer} \=\> generated %{NUMBER:generated_bytes:int} bytes in %{NUMBER} msecs \(HTTP/%{NUMBER} %{NUMBER:status_code:int}\) %{NUMBER:headers:int} headers in %{NUMBER:header_bytes:int} bytes \(%{NUMBER:switches:int} switches on core %{NUMBER:core:int}\)",
            "message", "\[pid\: %{NUMBER:process_id:int}\|app: 0\|req: %{NUMBER}/%{NUMBER}\] %{IPORHOST:clientip} \(\) \{%{NUMBER:vars:int} vars in %{NUMBER:bytes:int} bytes\} \[%{GREEDYDATA:timestamp}\] %{WORD:method} /%{GREEDYDATA:referrer} \=\> generated %{NUMBER:generated_bytes:int} bytes in %{NUMBER} msecs \(HTTP/%{NUMBER} %{NUMBER:status_code:int}\) %{NUMBER:headers:int} headers in %{NUMBER:header_bytes:int} bytes \(%{NUMBER:switches:int} switches on core %{NUMBER:core:int}\)%{GREEDYDATA:traceback}"
                ]
        }

grok {
    match => [
        "message", "\[pid\: %{NUMBER:process_id:int}\|app: 0\|req: %{NUMBER}/%{NUMBER}\] %{IPORHOST:clientip} \(\) \{%{NUMBER:vars:int} vars in %{NUMBER:bytes:int} bytes\} \[%{GREEDYDATA:timestamp}\] %{WORD:method} /%{GREEDYDATA:referrer} \=\> generated %{NUMBER:generated_bytes:int} bytes in %{NUMBER} msecs \(HTTP/%{NUMBER} %{NUMBER:status_code:int}\) %{NUMBER:headers:int} headers in %{NUMBER:header_bytes:int} bytes \(%{NUMBER:switches:int} switches on core %{NUMBER:core:int}\)(%{GREEDYDATA:traceback})?"
    ]
}

到目前为止，我已经能够解析日志，除了最后一行，即

ValueError: Unterminated string starting at: line 1 column 355 (char 354)

我正在使用多行过滤器来实现这一点。我的日志存储配置如下所示：

[pid: 26422|app: 0|req: 73/73] 192.168.1.1 () {34 vars in 592 bytes} [Wed Feb 18 13:35:55 2015] GET /data => generated 2538923 bytes in 4078 msecs (HTTP/1.1 200) 2 headers in 85 bytes (1 switches on core 0)
Traceback (most recent call last):
  File "/var/www/analytics/parser.py", line 257, in parselogfile
    parselogline(basedir, lne)
  File "/var/www/analytics/parser.py", line 157, in parselogline
    pval = understandpost(parts[3])
  File "/var/www/analytics/parser.py", line 98, in understandpost
    val = json.loads(dct["events"])
  File "/usr/lib/python2.7/json/__init__.py", line 338, in loads
    return _default_decoder.decode(s)
  File "/usr/lib/python2.7/json/decoder.py", line 366, in decode
    obj, end = self.raw_decode(s, idx=_w(s, 0).end())
  File "/usr/lib/python2.7/json/decoder.py", line 382, in raw_decode
    obj, end = self.scan_once(s, idx)
ValueError: Unterminated string starting at: line 1 column 355 (char 354)

filter {

    multiline {
        pattern => "^Traceback"
        what => "previous"
    }

    multiline {
        pattern => "^ "
        what => "previous"
    }


    grok {
        match => [
            "message", "\[pid\: %{NUMBER:process_id:int}\|app: 0\|req: %{NUMBER}/%{NUMBER}\] %{IPORHOST:clientip} \(\) \{%{NUMBER:vars:int} vars in %{NUMBER:bytes:int} bytes\} \[%{GREEDYDATA:timestamp}\] %{WORD:method} /%{GREEDYDATA:referrer} \=\> generated %{NUMBER:generated_bytes:int} bytes in %{NUMBER} msecs \(HTTP/%{NUMBER} %{NUMBER:status_code:int}\) %{NUMBER:headers:int} headers in %{NUMBER:header_bytes:int} bytes \(%{NUMBER:switches:int} switches on core %{NUMBER:core:int}\)%{GREEDYDATA:traceback}"
            ]
    }

    if "_grokparsefailure" in [tags] {
        multiline {
            pattern => "^.*$"
            what => "previous"
            negate => "true"
        }
    }

    if "_grokparsefailure" in [tags] {
        grok {
            match => [
                  "message", "\[pid\: %{NUMBER:process_id:int}\|app: 0\|req: %{NUMBER}/%{NUMBER}\] %{IPORHOST:clientip} \(\) \{%{NUMBER:vars:int} vars in %{NUMBER:bytes:int} bytes\} \[%{GREEDYDATA:timestamp}\] %{WORD:method} /%{GREEDYDATA:referrer} \=\> generated %{NUMBER:generated_bytes:int} bytes in %{NUMBER} msecs \(HTTP/%{NUMBER} %{NUMBER:status_code:int}\) %{NUMBER:headers:int} headers in %{NUMBER:header_bytes:int} bytes \(%{NUMBER:switches:int} switches on core %{NUMBER:core:int}\)%{GREEDYDATA:traceback}"
        ]
            remove_tag => ["_grokparsefailure"]
        }
    }
}

filter {

    multiline {
        pattern => "^[^\[]"
        what => "previous"
    }



    grok {
        match => [
            "message", "\[pid\: %{NUMBER:process_id:int}\|app: 0\|req: %{NUMBER}/%{NUMBER}\] %{IPORHOST:clientip} \(\) \{%{NUMBER:vars:int} vars in %{NUMBER:bytes:int} bytes\} \[%{GREEDYDATA:timestamp}\] %{WORD:method} /%{GREEDYDATA:referrer} \=\> generated %{NUMBER:generated_bytes:int} bytes in %{NUMBER} msecs \(HTTP/%{NUMBER} %{NUMBER:status_code:int}\) %{NUMBER:headers:int} headers in %{NUMBER:header_bytes:int} bytes \(%{NUMBER:switches:int} switches on core %{NUMBER:core:int}\)%{GREEDYDATA:traceback}"
        ]
    }

    if "_grokparsefailure" in [tags] {
        grok {
            match => [
            "message", "\[pid\: %{NUMBER:process_id:int}\|app: 0\|req: %{NUMBER}/%{NUMBER}\] %{IPORHOST:clientip} \(\) \{%{NUMBER:vars:int} vars in %{NUMBER:bytes:int} bytes\} \[%{GREEDYDATA:timestamp}\] %{WORD:method} /%{GREEDYDATA:referrer} \=\> generated %{NUMBER:generated_bytes:int} bytes in %{NUMBER} msecs \(HTTP/%{NUMBER} %{NUMBER:status_code:int}\) %{NUMBER:headers:int} headers in %{NUMBER:header_bytes:int} bytes \(%{NUMBER:switches:int} switches on core %{NUMBER:core:int}\)"
                ]
            remove_tag => ["_grokparsefailure"]
        }
    }

    else {
        mutate {
            convert => {"traceback" => "string"}
        }
    }

    date {
        match => ["timestamp", "dd/MM/YYYY:HH:MM:ss Z"]
        locale => en
    }
    geoip {
        source => "clientip"
    }
    useragent {
        source => "agent"
        target => "Useragent"
    }
}

        grok {
            match => [
            "message", "\[pid\: %{NUMBER:process_id:int}\|app: 0\|req: %{NUMBER}/%{NUMBER}\] %{IPORHOST:clientip} \(\) \{%{NUMBER:vars:int} vars in %{NUMBER:bytes:int} bytes\} \[%{GREEDYDATA:timestamp}\] %{WORD:method} /%{GREEDYDATA:referrer} \=\> generated %{NUMBER:generated_bytes:int} bytes in %{NUMBER} msecs \(HTTP/%{NUMBER} %{NUMBER:status_code:int}\) %{NUMBER:headers:int} headers in %{NUMBER:header_bytes:int} bytes \(%{NUMBER:switches:int} switches on core %{NUMBER:core:int}\)",
            "message", "\[pid\: %{NUMBER:process_id:int}\|app: 0\|req: %{NUMBER}/%{NUMBER}\] %{IPORHOST:clientip} \(\) \{%{NUMBER:vars:int} vars in %{NUMBER:bytes:int} bytes\} \[%{GREEDYDATA:timestamp}\] %{WORD:method} /%{GREEDYDATA:referrer} \=\> generated %{NUMBER:generated_bytes:int} bytes in %{NUMBER} msecs \(HTTP/%{NUMBER} %{NUMBER:status_code:int}\) %{NUMBER:headers:int} headers in %{NUMBER:header_bytes:int} bytes \(%{NUMBER:switches:int} switches on core %{NUMBER:core:int}\)%{GREEDYDATA:traceback}"
                ]
        }

grok {
    match => [
        "message", "\[pid\: %{NUMBER:process_id:int}\|app: 0\|req: %{NUMBER}/%{NUMBER}\] %{IPORHOST:clientip} \(\) \{%{NUMBER:vars:int} vars in %{NUMBER:bytes:int} bytes\} \[%{GREEDYDATA:timestamp}\] %{WORD:method} /%{GREEDYDATA:referrer} \=\> generated %{NUMBER:generated_bytes:int} bytes in %{NUMBER} msecs \(HTTP/%{NUMBER} %{NUMBER:status_code:int}\) %{NUMBER:headers:int} headers in %{NUMBER:header_bytes:int} bytes \(%{NUMBER:switches:int} switches on core %{NUMBER:core:int}\)(%{GREEDYDATA:traceback})?"
    ]
}

但我的最后一行不是解析。相反，它仍然给了我一个错误，而且处理时间也成倍增加。关于如何解析回溯的最后一行有什么建议吗？

嗯，我找到了一个解决方案。因此，我采用的方法是，我将忽略以“[”开头的日志消息的开头，所有其他行将附加在前一条消息的末尾。然后可以应用grok筛选器，并可以解析回溯。请注意，我必须应用两个grok筛选器：

用于在有GREEDYDATA回溯时获取回溯

因为当没有回溯时，GREEDYDATA解析会失败，我必须删除_grokparsefailure标记，然后在没有GREEDYDATA的情况下再次应用grok。这是在if block的帮助下完成的

最后的logstash过滤器如下所示：

[pid: 26422|app: 0|req: 73/73] 192.168.1.1 () {34 vars in 592 bytes} [Wed Feb 18 13:35:55 2015] GET /data => generated 2538923 bytes in 4078 msecs (HTTP/1.1 200) 2 headers in 85 bytes (1 switches on core 0)
Traceback (most recent call last):
  File "/var/www/analytics/parser.py", line 257, in parselogfile
    parselogline(basedir, lne)
  File "/var/www/analytics/parser.py", line 157, in parselogline
    pval = understandpost(parts[3])
  File "/var/www/analytics/parser.py", line 98, in understandpost
    val = json.loads(dct["events"])
  File "/usr/lib/python2.7/json/__init__.py", line 338, in loads
    return _default_decoder.decode(s)
  File "/usr/lib/python2.7/json/decoder.py", line 366, in decode
    obj, end = self.raw_decode(s, idx=_w(s, 0).end())
  File "/usr/lib/python2.7/json/decoder.py", line 382, in raw_decode
    obj, end = self.scan_once(s, idx)
ValueError: Unterminated string starting at: line 1 column 355 (char 354)

filter {

    multiline {
        pattern => "^Traceback"
        what => "previous"
    }

    multiline {
        pattern => "^ "
        what => "previous"
    }


    grok {
        match => [
            "message", "\[pid\: %{NUMBER:process_id:int}\|app: 0\|req: %{NUMBER}/%{NUMBER}\] %{IPORHOST:clientip} \(\) \{%{NUMBER:vars:int} vars in %{NUMBER:bytes:int} bytes\} \[%{GREEDYDATA:timestamp}\] %{WORD:method} /%{GREEDYDATA:referrer} \=\> generated %{NUMBER:generated_bytes:int} bytes in %{NUMBER} msecs \(HTTP/%{NUMBER} %{NUMBER:status_code:int}\) %{NUMBER:headers:int} headers in %{NUMBER:header_bytes:int} bytes \(%{NUMBER:switches:int} switches on core %{NUMBER:core:int}\)%{GREEDYDATA:traceback}"
            ]
    }

    if "_grokparsefailure" in [tags] {
        multiline {
            pattern => "^.*$"
            what => "previous"
            negate => "true"
        }
    }

    if "_grokparsefailure" in [tags] {
        grok {
            match => [
                  "message", "\[pid\: %{NUMBER:process_id:int}\|app: 0\|req: %{NUMBER}/%{NUMBER}\] %{IPORHOST:clientip} \(\) \{%{NUMBER:vars:int} vars in %{NUMBER:bytes:int} bytes\} \[%{GREEDYDATA:timestamp}\] %{WORD:method} /%{GREEDYDATA:referrer} \=\> generated %{NUMBER:generated_bytes:int} bytes in %{NUMBER} msecs \(HTTP/%{NUMBER} %{NUMBER:status_code:int}\) %{NUMBER:headers:int} headers in %{NUMBER:header_bytes:int} bytes \(%{NUMBER:switches:int} switches on core %{NUMBER:core:int}\)%{GREEDYDATA:traceback}"
        ]
            remove_tag => ["_grokparsefailure"]
        }
    }
}

filter {

    multiline {
        pattern => "^[^\[]"
        what => "previous"
    }



    grok {
        match => [
            "message", "\[pid\: %{NUMBER:process_id:int}\|app: 0\|req: %{NUMBER}/%{NUMBER}\] %{IPORHOST:clientip} \(\) \{%{NUMBER:vars:int} vars in %{NUMBER:bytes:int} bytes\} \[%{GREEDYDATA:timestamp}\] %{WORD:method} /%{GREEDYDATA:referrer} \=\> generated %{NUMBER:generated_bytes:int} bytes in %{NUMBER} msecs \(HTTP/%{NUMBER} %{NUMBER:status_code:int}\) %{NUMBER:headers:int} headers in %{NUMBER:header_bytes:int} bytes \(%{NUMBER:switches:int} switches on core %{NUMBER:core:int}\)%{GREEDYDATA:traceback}"
        ]
    }

    if "_grokparsefailure" in [tags] {
        grok {
            match => [
            "message", "\[pid\: %{NUMBER:process_id:int}\|app: 0\|req: %{NUMBER}/%{NUMBER}\] %{IPORHOST:clientip} \(\) \{%{NUMBER:vars:int} vars in %{NUMBER:bytes:int} bytes\} \[%{GREEDYDATA:timestamp}\] %{WORD:method} /%{GREEDYDATA:referrer} \=\> generated %{NUMBER:generated_bytes:int} bytes in %{NUMBER} msecs \(HTTP/%{NUMBER} %{NUMBER:status_code:int}\) %{NUMBER:headers:int} headers in %{NUMBER:header_bytes:int} bytes \(%{NUMBER:switches:int} switches on core %{NUMBER:core:int}\)"
                ]
            remove_tag => ["_grokparsefailure"]
        }
    }

    else {
        mutate {
            convert => {"traceback" => "string"}
        }
    }

    date {
        match => ["timestamp", "dd/MM/YYYY:HH:MM:ss Z"]
        locale => en
    }
    geoip {
        source => "clientip"
    }
    useragent {
        source => "agent"
        target => "Useragent"
    }
}

        grok {
            match => [
            "message", "\[pid\: %{NUMBER:process_id:int}\|app: 0\|req: %{NUMBER}/%{NUMBER}\] %{IPORHOST:clientip} \(\) \{%{NUMBER:vars:int} vars in %{NUMBER:bytes:int} bytes\} \[%{GREEDYDATA:timestamp}\] %{WORD:method} /%{GREEDYDATA:referrer} \=\> generated %{NUMBER:generated_bytes:int} bytes in %{NUMBER} msecs \(HTTP/%{NUMBER} %{NUMBER:status_code:int}\) %{NUMBER:headers:int} headers in %{NUMBER:header_bytes:int} bytes \(%{NUMBER:switches:int} switches on core %{NUMBER:core:int}\)",
            "message", "\[pid\: %{NUMBER:process_id:int}\|app: 0\|req: %{NUMBER}/%{NUMBER}\] %{IPORHOST:clientip} \(\) \{%{NUMBER:vars:int} vars in %{NUMBER:bytes:int} bytes\} \[%{GREEDYDATA:timestamp}\] %{WORD:method} /%{GREEDYDATA:referrer} \=\> generated %{NUMBER:generated_bytes:int} bytes in %{NUMBER} msecs \(HTTP/%{NUMBER} %{NUMBER:status_code:int}\) %{NUMBER:headers:int} headers in %{NUMBER:header_bytes:int} bytes \(%{NUMBER:switches:int} switches on core %{NUMBER:core:int}\)%{GREEDYDATA:traceback}"
                ]
        }

grok {
    match => [
        "message", "\[pid\: %{NUMBER:process_id:int}\|app: 0\|req: %{NUMBER}/%{NUMBER}\] %{IPORHOST:clientip} \(\) \{%{NUMBER:vars:int} vars in %{NUMBER:bytes:int} bytes\} \[%{GREEDYDATA:timestamp}\] %{WORD:method} /%{GREEDYDATA:referrer} \=\> generated %{NUMBER:generated_bytes:int} bytes in %{NUMBER} msecs \(HTTP/%{NUMBER} %{NUMBER:status_code:int}\) %{NUMBER:headers:int} headers in %{NUMBER:header_bytes:int} bytes \(%{NUMBER:switches:int} switches on core %{NUMBER:core:int}\)(%{GREEDYDATA:traceback})?"
    ]
}

或者，如果不想使用if块检查另一个grok模式并删除

\u grokparsefailure

，则可以使用第一个grok筛选器检查这两种消息类型，方法是在grok筛选器的

匹配

数组中包含多个消息模式检查。可以这样做：

[pid: 26422|app: 0|req: 73/73] 192.168.1.1 () {34 vars in 592 bytes} [Wed Feb 18 13:35:55 2015] GET /data => generated 2538923 bytes in 4078 msecs (HTTP/1.1 200) 2 headers in 85 bytes (1 switches on core 0)
Traceback (most recent call last):
  File "/var/www/analytics/parser.py", line 257, in parselogfile
    parselogline(basedir, lne)
  File "/var/www/analytics/parser.py", line 157, in parselogline
    pval = understandpost(parts[3])
  File "/var/www/analytics/parser.py", line 98, in understandpost
    val = json.loads(dct["events"])
  File "/usr/lib/python2.7/json/__init__.py", line 338, in loads
    return _default_decoder.decode(s)
  File "/usr/lib/python2.7/json/decoder.py", line 366, in decode
    obj, end = self.raw_decode(s, idx=_w(s, 0).end())
  File "/usr/lib/python2.7/json/decoder.py", line 382, in raw_decode
    obj, end = self.scan_once(s, idx)
ValueError: Unterminated string starting at: line 1 column 355 (char 354)

filter {

    multiline {
        pattern => "^Traceback"
        what => "previous"
    }

    multiline {
        pattern => "^ "
        what => "previous"
    }


    grok {
        match => [
            "message", "\[pid\: %{NUMBER:process_id:int}\|app: 0\|req: %{NUMBER}/%{NUMBER}\] %{IPORHOST:clientip} \(\) \{%{NUMBER:vars:int} vars in %{NUMBER:bytes:int} bytes\} \[%{GREEDYDATA:timestamp}\] %{WORD:method} /%{GREEDYDATA:referrer} \=\> generated %{NUMBER:generated_bytes:int} bytes in %{NUMBER} msecs \(HTTP/%{NUMBER} %{NUMBER:status_code:int}\) %{NUMBER:headers:int} headers in %{NUMBER:header_bytes:int} bytes \(%{NUMBER:switches:int} switches on core %{NUMBER:core:int}\)%{GREEDYDATA:traceback}"
            ]
    }

    if "_grokparsefailure" in [tags] {
        multiline {
            pattern => "^.*$"
            what => "previous"
            negate => "true"
        }
    }

    if "_grokparsefailure" in [tags] {
        grok {
            match => [
                  "message", "\[pid\: %{NUMBER:process_id:int}\|app: 0\|req: %{NUMBER}/%{NUMBER}\] %{IPORHOST:clientip} \(\) \{%{NUMBER:vars:int} vars in %{NUMBER:bytes:int} bytes\} \[%{GREEDYDATA:timestamp}\] %{WORD:method} /%{GREEDYDATA:referrer} \=\> generated %{NUMBER:generated_bytes:int} bytes in %{NUMBER} msecs \(HTTP/%{NUMBER} %{NUMBER:status_code:int}\) %{NUMBER:headers:int} headers in %{NUMBER:header_bytes:int} bytes \(%{NUMBER:switches:int} switches on core %{NUMBER:core:int}\)%{GREEDYDATA:traceback}"
        ]
            remove_tag => ["_grokparsefailure"]
        }
    }
}

filter {

    multiline {
        pattern => "^[^\[]"
        what => "previous"
    }



    grok {
        match => [
            "message", "\[pid\: %{NUMBER:process_id:int}\|app: 0\|req: %{NUMBER}/%{NUMBER}\] %{IPORHOST:clientip} \(\) \{%{NUMBER:vars:int} vars in %{NUMBER:bytes:int} bytes\} \[%{GREEDYDATA:timestamp}\] %{WORD:method} /%{GREEDYDATA:referrer} \=\> generated %{NUMBER:generated_bytes:int} bytes in %{NUMBER} msecs \(HTTP/%{NUMBER} %{NUMBER:status_code:int}\) %{NUMBER:headers:int} headers in %{NUMBER:header_bytes:int} bytes \(%{NUMBER:switches:int} switches on core %{NUMBER:core:int}\)%{GREEDYDATA:traceback}"
        ]
    }

    if "_grokparsefailure" in [tags] {
        grok {
            match => [
            "message", "\[pid\: %{NUMBER:process_id:int}\|app: 0\|req: %{NUMBER}/%{NUMBER}\] %{IPORHOST:clientip} \(\) \{%{NUMBER:vars:int} vars in %{NUMBER:bytes:int} bytes\} \[%{GREEDYDATA:timestamp}\] %{WORD:method} /%{GREEDYDATA:referrer} \=\> generated %{NUMBER:generated_bytes:int} bytes in %{NUMBER} msecs \(HTTP/%{NUMBER} %{NUMBER:status_code:int}\) %{NUMBER:headers:int} headers in %{NUMBER:header_bytes:int} bytes \(%{NUMBER:switches:int} switches on core %{NUMBER:core:int}\)"
                ]
            remove_tag => ["_grokparsefailure"]
        }
    }

    else {
        mutate {
            convert => {"traceback" => "string"}
        }
    }

    date {
        match => ["timestamp", "dd/MM/YYYY:HH:MM:ss Z"]
        locale => en
    }
    geoip {
        source => "clientip"
    }
    useragent {
        source => "agent"
        target => "Useragent"
    }
}

        grok {
            match => [
            "message", "\[pid\: %{NUMBER:process_id:int}\|app: 0\|req: %{NUMBER}/%{NUMBER}\] %{IPORHOST:clientip} \(\) \{%{NUMBER:vars:int} vars in %{NUMBER:bytes:int} bytes\} \[%{GREEDYDATA:timestamp}\] %{WORD:method} /%{GREEDYDATA:referrer} \=\> generated %{NUMBER:generated_bytes:int} bytes in %{NUMBER} msecs \(HTTP/%{NUMBER} %{NUMBER:status_code:int}\) %{NUMBER:headers:int} headers in %{NUMBER:header_bytes:int} bytes \(%{NUMBER:switches:int} switches on core %{NUMBER:core:int}\)",
            "message", "\[pid\: %{NUMBER:process_id:int}\|app: 0\|req: %{NUMBER}/%{NUMBER}\] %{IPORHOST:clientip} \(\) \{%{NUMBER:vars:int} vars in %{NUMBER:bytes:int} bytes\} \[%{GREEDYDATA:timestamp}\] %{WORD:method} /%{GREEDYDATA:referrer} \=\> generated %{NUMBER:generated_bytes:int} bytes in %{NUMBER} msecs \(HTTP/%{NUMBER} %{NUMBER:status_code:int}\) %{NUMBER:headers:int} headers in %{NUMBER:header_bytes:int} bytes \(%{NUMBER:switches:int} switches on core %{NUMBER:core:int}\)%{GREEDYDATA:traceback}"
                ]
        }

grok {
    match => [
        "message", "\[pid\: %{NUMBER:process_id:int}\|app: 0\|req: %{NUMBER}/%{NUMBER}\] %{IPORHOST:clientip} \(\) \{%{NUMBER:vars:int} vars in %{NUMBER:bytes:int} bytes\} \[%{GREEDYDATA:timestamp}\] %{WORD:method} /%{GREEDYDATA:referrer} \=\> generated %{NUMBER:generated_bytes:int} bytes in %{NUMBER} msecs \(HTTP/%{NUMBER} %{NUMBER:status_code:int}\) %{NUMBER:headers:int} headers in %{NUMBER:header_bytes:int} bytes \(%{NUMBER:switches:int} switches on core %{NUMBER:core:int}\)(%{GREEDYDATA:traceback})?"
    ]
}

还有第三种方法（可能是最优雅的方法）。它看起来像这样：

[pid: 26422|app: 0|req: 73/73] 192.168.1.1 () {34 vars in 592 bytes} [Wed Feb 18 13:35:55 2015] GET /data => generated 2538923 bytes in 4078 msecs (HTTP/1.1 200) 2 headers in 85 bytes (1 switches on core 0)
Traceback (most recent call last):
  File "/var/www/analytics/parser.py", line 257, in parselogfile
    parselogline(basedir, lne)
  File "/var/www/analytics/parser.py", line 157, in parselogline
    pval = understandpost(parts[3])
  File "/var/www/analytics/parser.py", line 98, in understandpost
    val = json.loads(dct["events"])
  File "/usr/lib/python2.7/json/__init__.py", line 338, in loads
    return _default_decoder.decode(s)
  File "/usr/lib/python2.7/json/decoder.py", line 366, in decode
    obj, end = self.raw_decode(s, idx=_w(s, 0).end())
  File "/usr/lib/python2.7/json/decoder.py", line 382, in raw_decode
    obj, end = self.scan_once(s, idx)
ValueError: Unterminated string starting at: line 1 column 355 (char 354)

filter {

    multiline {
        pattern => "^Traceback"
        what => "previous"
    }

    multiline {
        pattern => "^ "
        what => "previous"
    }


    grok {
        match => [
            "message", "\[pid\: %{NUMBER:process_id:int}\|app: 0\|req: %{NUMBER}/%{NUMBER}\] %{IPORHOST:clientip} \(\) \{%{NUMBER:vars:int} vars in %{NUMBER:bytes:int} bytes\} \[%{GREEDYDATA:timestamp}\] %{WORD:method} /%{GREEDYDATA:referrer} \=\> generated %{NUMBER:generated_bytes:int} bytes in %{NUMBER} msecs \(HTTP/%{NUMBER} %{NUMBER:status_code:int}\) %{NUMBER:headers:int} headers in %{NUMBER:header_bytes:int} bytes \(%{NUMBER:switches:int} switches on core %{NUMBER:core:int}\)%{GREEDYDATA:traceback}"
            ]
    }

    if "_grokparsefailure" in [tags] {
        multiline {
            pattern => "^.*$"
            what => "previous"
            negate => "true"
        }
    }

    if "_grokparsefailure" in [tags] {
        grok {
            match => [
                  "message", "\[pid\: %{NUMBER:process_id:int}\|app: 0\|req: %{NUMBER}/%{NUMBER}\] %{IPORHOST:clientip} \(\) \{%{NUMBER:vars:int} vars in %{NUMBER:bytes:int} bytes\} \[%{GREEDYDATA:timestamp}\] %{WORD:method} /%{GREEDYDATA:referrer} \=\> generated %{NUMBER:generated_bytes:int} bytes in %{NUMBER} msecs \(HTTP/%{NUMBER} %{NUMBER:status_code:int}\) %{NUMBER:headers:int} headers in %{NUMBER:header_bytes:int} bytes \(%{NUMBER:switches:int} switches on core %{NUMBER:core:int}\)%{GREEDYDATA:traceback}"
        ]
            remove_tag => ["_grokparsefailure"]
        }
    }
}

filter {

    multiline {
        pattern => "^[^\[]"
        what => "previous"
    }



    grok {
        match => [
            "message", "\[pid\: %{NUMBER:process_id:int}\|app: 0\|req: %{NUMBER}/%{NUMBER}\] %{IPORHOST:clientip} \(\) \{%{NUMBER:vars:int} vars in %{NUMBER:bytes:int} bytes\} \[%{GREEDYDATA:timestamp}\] %{WORD:method} /%{GREEDYDATA:referrer} \=\> generated %{NUMBER:generated_bytes:int} bytes in %{NUMBER} msecs \(HTTP/%{NUMBER} %{NUMBER:status_code:int}\) %{NUMBER:headers:int} headers in %{NUMBER:header_bytes:int} bytes \(%{NUMBER:switches:int} switches on core %{NUMBER:core:int}\)%{GREEDYDATA:traceback}"
        ]
    }

    if "_grokparsefailure" in [tags] {
        grok {
            match => [
            "message", "\[pid\: %{NUMBER:process_id:int}\|app: 0\|req: %{NUMBER}/%{NUMBER}\] %{IPORHOST:clientip} \(\) \{%{NUMBER:vars:int} vars in %{NUMBER:bytes:int} bytes\} \[%{GREEDYDATA:timestamp}\] %{WORD:method} /%{GREEDYDATA:referrer} \=\> generated %{NUMBER:generated_bytes:int} bytes in %{NUMBER} msecs \(HTTP/%{NUMBER} %{NUMBER:status_code:int}\) %{NUMBER:headers:int} headers in %{NUMBER:header_bytes:int} bytes \(%{NUMBER:switches:int} switches on core %{NUMBER:core:int}\)"
                ]
            remove_tag => ["_grokparsefailure"]
        }
    }

    else {
        mutate {
            convert => {"traceback" => "string"}
        }
    }

    date {
        match => ["timestamp", "dd/MM/YYYY:HH:MM:ss Z"]
        locale => en
    }
    geoip {
        source => "clientip"
    }
    useragent {
        source => "agent"
        target => "Useragent"
    }
}

        grok {
            match => [
            "message", "\[pid\: %{NUMBER:process_id:int}\|app: 0\|req: %{NUMBER}/%{NUMBER}\] %{IPORHOST:clientip} \(\) \{%{NUMBER:vars:int} vars in %{NUMBER:bytes:int} bytes\} \[%{GREEDYDATA:timestamp}\] %{WORD:method} /%{GREEDYDATA:referrer} \=\> generated %{NUMBER:generated_bytes:int} bytes in %{NUMBER} msecs \(HTTP/%{NUMBER} %{NUMBER:status_code:int}\) %{NUMBER:headers:int} headers in %{NUMBER:header_bytes:int} bytes \(%{NUMBER:switches:int} switches on core %{NUMBER:core:int}\)",
            "message", "\[pid\: %{NUMBER:process_id:int}\|app: 0\|req: %{NUMBER}/%{NUMBER}\] %{IPORHOST:clientip} \(\) \{%{NUMBER:vars:int} vars in %{NUMBER:bytes:int} bytes\} \[%{GREEDYDATA:timestamp}\] %{WORD:method} /%{GREEDYDATA:referrer} \=\> generated %{NUMBER:generated_bytes:int} bytes in %{NUMBER} msecs \(HTTP/%{NUMBER} %{NUMBER:status_code:int}\) %{NUMBER:headers:int} headers in %{NUMBER:header_bytes:int} bytes \(%{NUMBER:switches:int} switches on core %{NUMBER:core:int}\)%{GREEDYDATA:traceback}"
                ]
        }

grok {
    match => [
        "message", "\[pid\: %{NUMBER:process_id:int}\|app: 0\|req: %{NUMBER}/%{NUMBER}\] %{IPORHOST:clientip} \(\) \{%{NUMBER:vars:int} vars in %{NUMBER:bytes:int} bytes\} \[%{GREEDYDATA:timestamp}\] %{WORD:method} /%{GREEDYDATA:referrer} \=\> generated %{NUMBER:generated_bytes:int} bytes in %{NUMBER} msecs \(HTTP/%{NUMBER} %{NUMBER:status_code:int}\) %{NUMBER:headers:int} headers in %{NUMBER:header_bytes:int} bytes \(%{NUMBER:switches:int} switches on core %{NUMBER:core:int}\)(%{GREEDYDATA:traceback})?"
    ]
}

请注意，在此方法中，存在可选字段的字段必须包含在“（）？”中。此处，

（{GREEDYDATA:traceback}）

因此，grok筛选器会发现，如果字段可用，将对其进行解析。否则，将跳过该字段。

我以前没有见过包含三个多行配置的配置。通常，您会找到标识一个部分开头的模式（对于您来说，可以是“[pid”或“回溯”）然后将下一个事件的所有内容合并到一条消息中。做了一些家庭作业并使用一个多行过滤器解决了它，我只需要识别以

开头的第一行[

对于我的日志标识和其他行，将使用多行筛选器追加。我将在这里发布解决方案，以防其他人需要解析python日志。另外，三个多行筛选器使用了太多的处理能力，减慢了日志存储速度，而使用一个这样的筛选器，它就像一个符咒！多行看起来更好！不是您可以在您的模式中使GREEDYDATA部分成为可选的？是一般语法，我相信。让我搜索一下，一个更简单、更小的方法总是可行的！；）找到了一个。它不使用foo，相反，我们可以在第一个grok筛选器中定义多个消息匹配模式，因此无需if块。编辑我的答案以引用该方法。在您的pa中使其可选ttern比在grok中列出两种稍有不同的模式更容易维护。重要的不是“foo”，而是“（）？”。我尝试过，是的，它奏效了。确实是一种优雅的方法！再次编辑答案以引用此方法。