如何从文本文件行解析logstash / grok中的json?
我有一个看起来像这样的日志文件(简化)
MyLine data={"firstname":"bob","lastname":"the builder"}
我想提取 包含的json 并创建两个字段,一个用于名字,一个用于姓氏。但是,我得到的输出是这样的:
{"message":"Line data={\"firstname\":\"bob\",\"lastname\":\"the builder\"}\r","@version":"1","@timestamp":"2015-11-26T11:38:56.700Z","host":"xxx","path":"C:/logstashold/bin/input.txt","MyWord":"Line","parsedJson":{"firstname":"bob","lastname":"the builder"}}
如你看到的
..."parsedJson":{"firstname":"bob","lastname":"the builder"}}
那不是我所需要的,我需要在kibana中为firstname和lastname创建字段,但是logstash不会使用json过滤器提取字段。
input { file {
path => "C:/logstashold/bin/input.txt"
}
}
filter {
grok {
match => { "message" => "%{WORD:MyWord} data=%{GREEDYDATA:request}"}
}
json{
source => "request"
target => "parsedJson"
remove_field=>["request"]
}
}
output {
file{
path => "C:/logstashold/bin/output.txt"
}
}
非常感谢任何帮助,我敢肯定我错过了一些简单的东西
谢谢
回答:
在json
过滤器之后,添加另一个名为的过滤器mutate
,以添加将从该parsedJson
字段中获取的两个字段。
filter { ...
json {
...
}
mutate {
add_field => {
"firstname" => "%{[parsedJson][firstname]}"
"lastname" => "%{[parsedJson][lastname]}"
}
}
}
对于上面的示例日志行,将得出:
{ "message" => "MyLine data={\"firstname\":\"bob\",\"lastname\":\"the builder\"}",
"@version" => "1",
"@timestamp" => "2015-11-26T11:54:52.556Z",
"host" => "iMac.local",
"MyWord" => "MyLine",
"parsedJson" => {
"firstname" => "bob",
"lastname" => "the builder"
},
"firstname" => "bob",
"lastname" => "the builder"
}
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