I am trying to do a parsing on a plaintext message using Grok; my goal is to explode the plaintext to a JSON log.
The message has a quite rigid format, as follows:
<timestamp> <loglevel> <greedydata> field1=value1, field2=value2, .... fieldN=valueN
Where the number of fields is not fixed.
It's possible to capture every field=value pair using a named capturing group, being able to use the same "field" name as the key in the output message?
Thanks
TL;DR - use dissect instead of grok
You want something like:
{
"timestamp": <timestamp>,
"loglevel": <loglevel>,
"field1": value1,
"field2": value2,
....
"fieldN": valueN
}
Where the keys (field1, fieldN etc) are dynamic.
You cannot use grok to do this. Even using a pattern like this (then using array position indices) won't work:
( field[0-9]+=%{DATA:value})+$
You need to handle this a different way. Your options are:
handle this before it hits logstash
use a ruby filter
use the dissect filter
Related
I must extract value from a log composed by row like this:
<38>1 [2017-03-15T08:45:23.168Z] apache.01.mysite.com event=login;src_ip=xxx.xxx.xxx.xxx\, xxx.xxx.xxx.xxx\, xxx.xxx.xxx.xxx;site=FE-B1-Site;cstnr=1454528;user=498119;result=SUCCESS
For example with %{IP:source}
I obtain only the first IP but, sometimes, I have 3 IP address.
How I can extract all IP,'cstnr', 'result' and 'user' ?
Looks like you have a nested, delimited key-value format. First delimiter is ;, with each of those a key=value. Additionally, the values are delimited on ,'. You have enough grok to get the first IP address, but I suggest doing something a bit different:
Use grok to grab the entire string after your site-name.
Use the kv filter with field_split => ';', which will create fields named the same as your keys.
Use the csv filter on the src_ip address captured in the kv filter stage.
Use columns => [ cstnr', 'result', 'user' ] to get those fields named right.
Some context:
I want to parse the following log statement using grok in logstash
07:51:45,729 TRACE [com.company.Class] (ajp-/1.2.3.4:8080-251) USERID called path: /url and took: 1000 ms
I am now using the following syntax to parse the complete message:
%{DATA:time}\s%{DATA:level}\s%{DATA:class}\s%{DATA:thread}\s%{DATA:userid}\s.*path:\s%{DATA:url}\s.*:\s%{NUMBER:duration:int}\sms
Which gives me all the properties that i have defined.
My question:
I want to parse this part (ajp-/1.2.3.4:8080-251) into a 'thread' property and an ip property.
The result needs to be:
thread: (ajp-/1.2.3.4:8080-251)
ip: 1.2.3.4
How can i do this?
Thanks
Just add a second grok filter after your working one. Do not put this in your existing grok filter because it will finish after the first match.
Example:
grok {
match => [ 'thread', '%{IP:ip}' ]
}
This obtains your previous field thread => "(ajp-/1.2.3.4:8080-251)" and adds a new field ip => "1.2.3.4"
Apart from that, I would recommend you to be more specific with your pattern. You used DATA everytime which is kind of imprecise. Start with something like this:
%{TIME:timestamp} %{WORD:method} \[%{JAVACLASS:class}\] \(%{DATA:thread}\) %{NUMBER:userid} %{DATA}%{URIPATH:uri}%{DATA}
(This is related to my other question logstash grok filter for custom logs )
I have a logfile whose lines look something like:
14:46:16.603 [http-nio-8080-exec-4] INFO METERING - msg=93e6dd5e-c009-46b3-b9eb-f753ee3b889a CREATE_JOB job=a820018e-7ad7-481a-97b0-bd705c3280ad data=71b1652e-16c8-4b33-9a57-f5fcb3d5de92
14:46:17.378 [http-nio-8080-exec-3] INFO METERING - msg=c1ddb068-e6a2-450a-9f8b-7cbc1dbc222a SET_STATUS job=a820018e-7ad7-481a-97b0-bd705c3280ad status=ACTIVE final=false
I built a pattern that matched the first line:
%{TIME:timestamp} %{NOTSPACE:http} %{WORD:loglevel}%{SPACE}%{WORD:logtype} - msg=%{NOTSPACE:msg}%{SPACE}%{WORD:action}%{SPACE}job=%{NOTSPACE:job}%{SPACE}data=%{NOTSPACE:data}
but obviously that only works for lines that have the data= at the end, versus the status= and final= at the end of the second line, or other attribute-value pairs on other lines? How can I set up a pattern that says that after a certain point there will be an arbitrary of foo=bar pairs that I want to recognize and output as attribute/value pairs in the output?
You can change your grok pattern like this to have all the key value pairs in one field (kvpairs):
%{TIME:timestamp} %{NOTSPACE:http} %{WORD:loglevel}%{SPACE}%{WORD:logtype} - %{GREEDYDATA:kvpairs}
Afterwards you can use the kv filter to parse the key value pairs.
kv {
source => "kvpairs"
remove_field => [ "kvpairs" ] # Delete the field afterwards
}
Unfortunately, you have some simple values inside your kv pairs (e.g. CREATE_JOB). You could parse them with grok and use one kv filter for the values before and another kv filter for the values after those simple values.
I have a field that contains comma separated values which I want to perform suggestion on.
{
"description" : "Breakfast,Sandwich,Maker"
}
Is it possible to get only applicable token while performing suggest as you type??
For ex:
When I say break, how can I get only Breakfast and not get Breakfast,Sandwich,Maker?
I have tried using commatokenizer but it seems it does not help
As said in the documentation, you can provide multiple possible inputs by indexing like this:
curl -X PUT 'localhost:9200/music/song/1?refresh=true' -d '{
"description" : "Breakfast,Sandwich,Maker",
"suggest" : {
"input": [ "Breakfast", "Sandwitch", "Maker" ],
"output": "Breakfast,Sandwich,Maker"
}
}'
This way, you suggest with any word of the list as input.
Obtaining the corresponding word as suggestion from Elasticsearch is not possible but as a workaround you could use a tokenizer outside Elasticsearch to split the suggested string and choose only the one that has the input as prefix.
EDIT: a better solution would be to use an array instead of comma-separated values, but it doesn't meet your specs... ( look at this: Elasticsearch autocomplete search on array field )
My log file contains different structures in a few lines, and I can not grok it, I don't know if we can test by lines or attribute, I'm still a beginner.
if you don't understand me I can give you some examples :
input :
id=firewall action=bloc type=web
id=firewall fw="ER" type=filter
id=firewall fw="Az" tz="loo" action=bloc
Pattern:
id=%{WORD:id} ...
I thought to add some patterns between ()?,
but i don't know exactly how to do it.
you can use this site to test it http://grokdebug.herokuapp.com/
Any help please? What should i do :(
Logstash supports key-value Values, take a look at http://logstash.net/docs/1.4.2/filters/kv.
Or you could use multiple match values:
grok {
patterns_dir => "./patterns"
match => [
"message", "%{BASE_PATTERN} %{EXTRA_PATTERN}",
"message", "%{BASE_PATTERN}",
"message", "%{SOME_OTHER_PATTERN}"
]
}
Not sure if I understood well your question but I will try to answer. I think the first thing you have to do is to parse the different fields from your input. Example of pattern to parse your first line input :
PATTERN %{NOTSPACE} %{NOTSPACE} %{NOTSPACE} (in $LOGSTASH_HOME/pattern/extra)
Then in your logstash configuration file :
filter {
grok {
patterns_dir => "$LOGSTASH_HOME/pattern"
match => [ "message" => "%{PATTERN}" ]
}
}
This will match your first line as 3 fields ("id=firewall" "action=bloc" "type=web") (you have to adapt it if you have more than 3 fields).
And the last thing you seem be looking for is splitting field (in key-value scheme) like id=firewall would become id => "firewall". This can be done with the kv plugin. I never used it but I recommend you the logstash docs here
If I did not understand you question, please be more clear.