I have many messages like this:
Error GetMilesFromLocationService(Eastvale, CA,Yorkshire, NY,1561517,19406,True.)
The problem is that they are unique because of the city names. In a Kibana Visualization, is it possible group these into "Error GetMilesFromLocationService" messages? Here's an example of my metrics visual. Ideally, they would all be in one row.
These could be easily grouped by a regex match.
Of course, I could add a new field with Logstash, but if Kibana is able to do this, I'll be happy.
Thanks!
Use a grok filter to parse the message and extract fields from it. At the very least you'll want to extract "Error GetMilesFromLocationService" into a separate field (perhaps error_type?) to allow aggregation. Or perhaps it would be better to extract "GetMilesFromLocationService" into a function field? Without knowing the structure of your log messages giving firm advice is hard.
This grok filter extracts an error_type field:
filter {
grok {
match => [
"message",
"^(?<error_type>Error %{WORD})"
]
}
}
Related
I'm trying to take the search word out of the slow logs. It is required to keep this extracted term in a different field so that I can visualize it via Kibana.
For example:
The search slow log on which I am testing the grok pattern is :
{\"query\":{\"bool\":{\"should\":[{\"match\":{\"sentences.0\":{\"query\":\"Professional\"}}}],\"boost\":1.0}},\"_source\":false,\"fields\":[{\"field\":\"url\"}],\"highlight\":{\"fields\":{\"sentences.0\":{}}}}
Since "Professional" is the search term in this case, I want to keep it in a separate field.
I tried to use this below grok pattern
grok {
match => { "message" => 'queryterm=(?<query>[a-z])' }
}
But the above grok pattern is not working.
Can anyone please help me out with this?
I'm trying to write a new logstash filter for events coming from Wazuh. Generally all events set a "%{[rule][description]}" variable and I write this into my alert field. I'm finding that one event is not populating this variable so when I write it to my alert field, I just get %{[rule][description]} instead of the contents.
Does anyone know how to check if a variable exists in a logstash filter? It's fairly easy for fields but not for a variable from what I can gather so far. I'd like to be able to say if the variable doesn't exist, then set it to a string of my choosing.
It's pretty strange getting a rule with the rule.description field empty, could you share with me the rule's id?
Anyway, the filter you are looking for is the following one:
filter{
if [rule][description] == '' {
mutate {
add_field => [ "rule.description", "VALUE" ]
}
}
}
Where you can fill VALUE with the string you wish.
Hope it helps.
I created a filter to break apart our log files and am having the following issue. I'm not able to figure out how to save the parts of the "message" to their own field or tag or whatever you call it. I'm 3 days new to logstash and have had zero luck with finding someone here who knows it.
So for an example lets say this is your log line in a log file
2017-12-05 [user:edjm1971] msg:This is a message from the system.
And what you want to do is to get the value of the user and set that into some index mapping so you can search for all logs that were by that user. Also, you should see the information from the message in their own fields in Kibana.
My pipeline.conf file for logstash is like
grok {
match => {
"message" => "%{TIMESTAMP_ISO8601:timestamp} [sid:%{USERNAME:sid} msg:%{DATA:message}"
}
add_tag => [ "foo_tag", "some_user_value_from_sid_above" ]
}
Now when I run the logger to create logs data gets over to ES and I can see the data in KIBANA but I don't see foo_tag at all with the sid value.
How exactly do I use this to create the new tag that gets stored into ES so I can see the data I want from the message?
Note: using regex tools it all appears to parse the log formats fine and the log for logstash does not spit out errors when processing.
Also for the logstash mapping it is using some auto defined mapping as the path value is nil.
I'm not clear on how to create a mapping for this either.
Guidance is greatly appreciated.
I have a file with the following format:
10302\t<document>.....</document>
12303\t<document>.....</document>
10054\t<document>.....</document>
10034\t<document>.....</document>
as you can see there are two values separated by a tab char. I need to
index the first token (e.g. 10302, 12303...) as ID
extract (and then index) some information from the second token (the XML document). In other words, the second token would be used with the xml filter for extracting some information
Is it possibile to do that separating the two values using the kv filter? Ideally I should end, for each line, with a document like this:
id:10302
msg:<document>....</document>
I could use a grok filter but I'd like to avoid any regex as the field detection is very easy and can be accomplished with a simple key-value logic. However, using a plain kv detection I'm ending with the following:
"10302": <document>.....</document>
"12303": <document>.....</document>
"10054": <document>.....</document>
"10034": <document>.....</document>
and this is not want I need.
It is not possible to use kv for the job you want to do, as far as I know, since there are no possible key for the id (10302, 10303, 10304...). There are no possible key since there is nothing before the id.
This grok configuration would work, assuming each id + document is on the same line :
grok {
match => { "message" => "^%{INT:ID}\t%{GREEDYDATA:msg}"}
}
I'm new at ELK-stack and want to add a field in kibana(discover) interface that matches a specific part of the message text (one word or a sentence).
for example:
I want to have a field in the left side that matches the word 'installed' in the message text.
Which filter in logstash should I use and how does it look like?
How about grok{}, which applies a regular expression to your input message and can make new fields?
Thanks for the answer. I used grok as following to match how many users created new accounts.
grok {
match => [ "message", "(?<user_created>(user_created))"]
break_on_match => false
}
Anyway I found out the problem is that Kibana is showing old logs and doesn't care what I do in the logstash config file! still can't find out why!