I want create userId field with use of grok.
in log sample you can see [userId: id of user in guid format].
so what is the pattern need to add in grok for userId ? need some guidence for this.
here is my log
2020-10-15 16:01:29.1350 [84680] ERROR FinanceAPI.Controllers.TransactionController 192.168.43.244 Invalid Ledgers [UserId:1dfae3d2-258d-42d4-802e-c39a751574e3]
here is the grok pattern
grok {
match => { "message" => "%{TIMESTAMP_ISO8601:timestamp} \[%{INT:processId}]\ %{LOGLEVEL:level} %{DATA:logger} %{IPV4:clientIp} %{GREEDYDATA:message} }
overwrite => "message"
}
UUID pattern should work to get the user id out of message.
Here is the default list of Grok pattens.
Related
I want to parse my logs with grok pattern.
This is my sample log file, which has 7 |*| characters in every log.
2022-12-15 01:11:22|*|639a7439798a26.27827512|*|5369168485-532|*|3622857|*|app.DEBUG|*|Checking the step |*|{"current_process":"PROVIDE PROBLEM INFORMATION","current_step":"SUBMIT_MEMO","queue_steps":}|*|{"_environment":"test","_application":"TEST"}
I am creating fields with grok pattern, but at the end I am trying to pick only last JSON part after 7th |*|{"\_environment":"test","\_application":"TEST"} in every log and parse it with JSON filter in Logstash.
How can I get only JSON object after 7th |*| object in every log?
Try this:
grok {
match => [ "message", "(?<notRequiredField>(?:.*?(\*)+){6}.*?((\*)+))\|%{GREEDYDATA:requiredField}" ]
}
mutate {
remove_field => [ "notRequiredField" ]
}
I'm trying to use grok and logstash to index some numeric datas. Datas structure is something like:
[integer,integer,integer,...,integer]
I created a index pattern in logstash, and using grok i write this filter:
grok {
match => { "message" => "\[%{NUMBER:opcode:int},%{NUMBER:sender:int},%{NUMBER:alertbitmap:int},%{NUMBER:bat:int},%{NUMBER:ant:int},%{NUMBER:resbat:int},%{NUMBER:temp:int},%{NUMBER:presatm:int},%{NUMBER:umid:int},%{NUMBER:vertical:int},%{NUMBER:analog1:int},%{NUMBER:analog2:int},%{NUMBER:analog3:int},%{NUMBER:analog4:int},%{NUMBER:spostam:int},%{NUMBER:contporta1:int},%{NUMBER:contporta2:int},%{NUMBER:digital1:int},%{NUMBER:digital2:int},%{NUMBER:digital3:int},%{NUMBER:digital4:int},%{NUMBER:time:int}\]" }
}
but when I explore index pattern in logstash the type is still string. How can i resolve this problem? Thanks in advance
I'm new to grok and I have run into this issue that I just don't know how to solve.
Below is my grok match:
grok {
match => { "source" => "/var/log/nginx/sites/\b\w+\b/\b\w+\b/\b\w+\b/%{DATA:uuid}/" }
}
mutate {
add_field => {
"read_timestamp" => "%{#timestamp}"
"token" => "%{[fields][token]}"
"logzio_codec" => "%{[fields][logzio_codec]}"
"uuid" => "%{uuid}"
"type" => "%{[fields][type]}"
"category" => "%{[fields][category]}"
}
}
for some reason, the uuid is matched and resulted in array of 2 uuid (duplicated values). Instead of uuid_string I get [uuid_string, uuid_string]
I tried on https://grokdebug.herokuapp.com/ and got what I expected so I wonder what is wrong?
So once again I misunderstand how grok works. It seems like once the match is done, all the fields are already added to the output. The additional add_field uuid in the mutate thus causes the field to be added twice and logstash then thinks it's an array.
I have the following in my filter, for some reason it only prints email and not delivery_status. But when I comment out the email it then prints the delivery _status.
Is there a way to print them both without commenting either of them out?
filter {
grok {
patterns_dir => ["/etc/logstash/patterns/postfix"]
match => { "message" => "%{EMAIL}" }
match => { "message" => "%{DELIVERY_STATUS}" }
overwrite => [ "message" ]
}
}
Your help would be appreciated.
By default the grok filter finishes on the first successful match. If you want to overwrite this behaviour, add this line:
break_on_match => false
For further reference check out the grok filter docs here.
My input has timestamp in the format of Apr20 14:59:41248 Dataxyz.
Now in my output i need the timestamp in the below format:
**Day Month Monthday Hour:Minute:Second Year DataXYZ **. I was able to remove the timestamp from the input. But I am not quite sure how to add the new timestamp.
I matched the message using grok while receiving the input:
match => ["message","%{WORD:word} %{TIME:time} %{GREEDYDATA:content}"]
I tried using mutate add_field.but was not successful in adding the value of the DAY. add_field => [ "timestamp","%{DAY}"].I got the output as the word ´DAY´ and not the value of DAY. Can someone please throw some light on what is being missed.
You need to grok it out into the individual named fields, and then you can reference those fields in add_field.
So your grok would start like this:
%{MONTH:month}%{MONTHDAY:mday}
And then you can put them back together like this:
mutate {
add_field => {
"newField" => "%{mday} %{month}"
}
}
You can check with my answer, I think this very helpful to you.
grok {
match => { "message" => "%{TIMESTAMP_ISO8601:time} \[%{NUMBER:thread}\] %{LOGLEVEL:loglevel} %{JAVACLASS:class} - %{GREEDYDATA:msg}" }
}
if "Exception" in [msg] {
mutate {
add_field => { "msg_error" => "%{msg}" }
}
}
You can use custom grok patterns to extract/rename fields.
You can extract other fields similarly and rearrange/play arounnd with them in mutate filter. Refer to Custom Patterns for more information.