logstash-grok

Parse multiline JSON with grok in logstash

杀马特。学长 韩版系。学妹 提交于 2019-11-30 21:25:52
I've got a JSON of the format: { "SOURCE":"Source A", "Model":"ModelABC", "Qty":"3" } I'm trying to parse this JSON using logstash. Basically I want the logstash output to be a list of key:value pairs that I can analyze using kibana. I thought this could be done out of the box. From a lot of reading, I understand I must use the grok plugin (I am still not sure what the json plugin is for). But I am unable to get an event with all the fields. I get multiple events (one even for each attribute of my JSON). Like so: { "message" => " \"SOURCE\": \"Source A\",", "@version" => "1", "@timestamp" =>

How do I match a newline in grok/logstash?

一曲冷凌霜 提交于 2019-11-30 11:53:12
问题 I have a remote machine that combines multiline events and sends them across the lumberjack protocol. What comes in is something that looks like this: { "message" => "2014-10-20T20:52:56.133+0000 host 2014-10-20 15:52:56,036 [ERROR ][app.logic ] Failed to turn message into JSON\nTraceback (most recent call last):\n File \"somefile.py", line 249, in _get_values\n return r.json()\n File \"/path/to/env/lib/python3.4/site-packages/requests/models.py\", line 793, in json\n return json.loads(self

How to handle non-matching Logstash grok filters

筅森魡賤 提交于 2019-11-30 06:17:40
问题 I am wondering what the best approach to take with my Logstash Grok filters. I have some filters that are for specific log entries, and won't apply to all entries. The ones that don't apply always generate _grokparsefailure tags. For example, I have one grok filter that's for every log entry and it works fine. Then I have another filter that's for error messages with tracebacks. The traceback filter throws a grokparsefailure for every single log entry that doesn't have a traceback. I'd prefer

How to process multiline log entry with logstash filter?

橙三吉。 提交于 2019-11-28 19:13:23
Background: I have a custom generated log file that has the following pattern : [2014-03-02 17:34:20] - 127.0.0.1|ERROR| E:\xampp\htdocs\test.php|123|subject|The error message goes here ; array ( 'create' => array ( 'key1' => 'value1', 'key2' => 'value2', 'key3' => 'value3' ), ) [2014-03-02 17:34:20] - 127.0.0.1|DEBUG| flush_multi_line The second entry [2014-03-02 17:34:20] - 127.0.0.1|DEBUG| flush_multi_line Is a dummy line, just to let logstash know that the multi line event is over, this line is dropped later on. My config file is the following : input { stdin{} } filter{ multiline{ pattern

How to handle non-matching Logstash grok filters

自闭症网瘾萝莉.ら 提交于 2019-11-28 16:39:05
I am wondering what the best approach to take with my Logstash Grok filters. I have some filters that are for specific log entries, and won't apply to all entries. The ones that don't apply always generate _grokparsefailure tags. For example, I have one grok filter that's for every log entry and it works fine. Then I have another filter that's for error messages with tracebacks. The traceback filter throws a grokparsefailure for every single log entry that doesn't have a traceback. I'd prefer to have it just pass the rule if there isn't a match instead of adding the parsefailure tag. I use the

Multiple patterns in one log

不问归期 提交于 2019-11-28 14:18:45
So I wrote now several patterns for logs which are working. The thing is now, that I have these multiple logs, with multiple patterns, in one single file. How does logstash know what kind of pattern it has to use for which line in the log? ( I am using grok for my filtering ) And if you guys would be super kind, could you give me the link to the docs, because I weren't able to find anything regarding this :/ You could use multiple patterns for your grok filter, grok { match => ["fieldname", "pattern1", "pattern2", ..., "patternN"] } and they will be applied in order but a) it's not the best

How to parse using Grok from Java.. Is there any example available.?

霸气de小男生 提交于 2019-11-28 07:50:05
问题 I have seen Grok being very strong and lethal in parsing the log data. I wanted to use Grok for log parsing in our application, which is in java.. How can i connect/work with Grok from Java.? 回答1: Try downloading java-grok from GitHub: https://github.com/NFLabs/java-grok You can test patterns using the Grok Debugger: http://grokdebug.herokuapp.com/ 回答2: Check out this Java library https://github.com/aicer/grok You can include it in your project as a maven dependency <dependency> <groupId>org

Logstash optional fields in logfile

[亡魂溺海] 提交于 2019-11-28 07:26:34
I'm trying to parse a logfile using grok Each line of the logfile has fields separated by commas: 13,home,ABC,Get,,Private, Public,1.2.3 ecc... I'm using match like this: match => [ "message", "%{NUMBER:requestId},%{WORD:ServerHost},%{WORD:Service}, ... My question is: Can I allow optional field? At times some of the fileds might be empty ,, Is there a pattern that matches a string like this 2.3.5 ? ( a kind of version number ) At it's base, grok is based on regular expressions, so you can surround a pattern with ()? to make it optional -- for example (%{NUMBER:requestId})?, If there isn't a

logstash http_poller first URL request's response should be input to second URL's request param

那年仲夏 提交于 2019-11-28 00:25:15
I have two URLs (due to security concern i will explain by using dummy) a> https://xyz.company.com/ui/api/token b> https://xyz.company.com/request/transaction?date=2016-01-21&token=<tokeninfo> When you hit url mentioned in point 'a' it will generate a token let it be a string of 16 characters Then that token should be used in making second request of point 'b' in token param Updated The second url response is important to me i.e is a JSON response, I need to filter the json data and extract required data and output it to standard output and elastic search. is there any way of doing so in

How to parse json in logstash /grok from a text file line?

生来就可爱ヽ(ⅴ<●) 提交于 2019-11-27 13:19:50
I have a logfile which looks like this ( simplified) Logline sample MyLine data={"firstname":"bob","lastname":"the builder"} I'd like to extract the json contained in data and create two fields, one for firstname, one for last. However, the ouput i get is this: {"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"}} As you can see ..."parsedJson":{"firstname":"bob","lastname":"the builder"}}