I have just started log stash, i have log files in that log file whole object is printed in the logs, Since my object is huge i cant write the grok patterns to the whole object and also i expecting only two values out of those object. Can you please let us know how can i get that?
my logs files looks like below
2015-06-10 13:02:57,903 your done OBJ[name:test;loc:blr;country:india,acc:test#abe.com]
This is just an example my object has lot attributes in int , in those object i need to get only name and acc.
Regards
Mohan.
You can use the following pattern for the same
%{GREEDYDATA}\[name:%{WORD:name};%{GREEDYDATA},acc:%{NOTSPACE:account}\]
GREEDYDATA us defined as follows -
GREEDYDATA .*
The key lie in understanding greedydata macro.
It eats up all possible characters as possible.
Logstash patterns don't have to match the entire line. You could also pull the leading information off (date, time, etc) in one grok{} and then use a different grok{} to pull off just the two fields that you want.
Related
I'm processing a log file with the help of logstash aggregate filter with grok having multiple patterns.
Now while processing the logs I want to extract a part of the log with some regex and store it into a file.
For example, let's say my log is :
id:0422 time:[2013-11-19 02:34:58] level:INFO text:(Lorem Ipsum is simply dummy text of the printing and typesetting industry)
In this log the text will be different at every time.
I have a regex with help of it I can match a part of text that can occure in logstash
So if I find something in that text with help of that regex while logstash indexing into elastic I want to store it into some file or something
Is it possible to achieve this?
There are different solutions for this:
create a filter using ruby code that will be triggered to write in a specific format when you have all the event data together
create a separate output which will be triggered based on an if statement to a file, this will be the preferred way of working as it is clear that it is an output.
Depending on the fact if you want to send all data or not, or have it look different or not you might need to use the clone function in order to clone the event into two different ones which can be manipulated apart from each other using tags.
Sometimes when searching logs by keyword or other conditions, I want to show not only the lines which match the condition, but also a few lines around them to better understand the context, similar to the -C flag of grep.
Is this possible?
Also looking for this. What I found so far is the option to "Pin and show resource log entries" for a matched result. It will pin the entry, and then show it inline with the rest of the log
I do not think it is possible to achieve this on Google Cloud Logging.
I usually run a first query, get the timestamp of the log that I am interested in and then run a second query using Custom time range.
Advanced logs queries
I have a field in my logs called json_path containing data like /nfs/abc/123/subdir/blah.json and I want to create count plot on part of the string abc here, so the third chunk using the token /. I have tried all sorts of online answers, but they're all partial answers (nothing I can easily understand how to use or integrate). I've tried running POST/GET queries in the Console, which all failed due to syntax errors I couldn't manage to debug (they were complaining about newline control chars, when there were none that I could obviously see or see in a text editor explicitly showing control-characters). I also tried Management -> Index Patterns -> Scripted Field but after adding my code there, basically the whole Kibana crashed (stopped working temporarily) until I removed that Scripted Field.
All this elasticsearch and kibana stuff is annoyingly difficult, all the docs expect you to be an expert in their tool, rather than just an engineer needing to visualize some data.
I don't really want to add a new data field in my log-generation code, because then all my old logs will be unsupported (which have the relevant data, it just needs that bit of string processing before data viz). I know I could probably back-annotate the old logs, but the whole Kibana/elasticsearch experience is just frustrating and I don't use it enough to justify learning such detailed procedures (I actually learned a bunch of this stuff a year ago, and then promptly forgot it due to lack of use).
You cannot plot on a sub string of a field unless you extract that sub string into a new field. I can understand the frustration in learning a new product but to be able to achieve what you want you need to have that sub string value in a new field. Scripted fields are generally used to modify a field. To be able to extract sub string from a field I’d recommend using Ingest Node processor like grok processor. This will add a new field which you can use to plot in Kibana visualizations..
I am wondering if it is possible for logstash to ignore first 2 lines of a file? I have looked in many places and the only solution seems to be using an if to check if the line is certain text, and if so drop .. but this seems extremely inefficient as I know for a fact I only need to drop first 2 lines and dont need to "if..then" check millions or even thousands of lines that follow.
Thanks.
The simple answer is no, not with the existing versions. The logstash file input only has an option for start_postition => beginning.
If you feel strongly about it, you could always fork the file input, update it with a start_position => skip_lines, add another parameter to specify how many lines, and then submit a pull request back to Elastic and it might get implemented.
I am sorry if it is not right to post a question on two forums.
We use Tivoli to monitor our logs files. The log4j log level is set to ERROR and Tivoli would raise tickets for these statements. But there are some known issues for which we would not want Tivoli to raise tickets. Is there a way to specify that some statements need to be ignored ?
Current regex : [/var/tmp/abc.log;ERROR(.*);error found: RegExp1]
This is very generic. We need to exclude certain framework errors (Hibernate / Mule) for a known issue. Is there a way to specify using a regex ?
Thanks,
Midhun
If you are using the LO Agent you can configure situation formula based on regular expression to fit your needs.
Below the LO Agent User Guide
http://pic.dhe.ibm.com/infocenter/tivihelp/v15r1/topic/com.ibm.itm.doc_6.2.3fp1/logfileagent623fp2_user.pdf
Take a look at the "Log File RegEx Statistics attribute group" section:
The Log File RegEx Statistics attribute group contains information that shows the statistics of the log file
regular expression search expressions. Regular expressions can be used to filter records or to define
records. This attribute group shows information about both types. When the Result Type attribute value
is INCLUDE or EXCLUDE, the filter is used to filter records;
Hope this helps
I don't have the reputation yet to post a comment but I'd have liked to ask if you are using the Tivoli Log File Agent (lo) of the Unix Log Agent (ul) before answering.
If your question is still actual...
Here is documentationof LogAgent - http://www-01.ibm.com/support/knowledgecenter/SS4EKN_7.2.0.2/com.ibm.itm.doc_6.3/logfile/klo_fileformat_specs.htm
You can specify new Regex as DISCARDED and all records mathced this regex will be not catched by ITM Events.
If you use the special predefined event class DISCARD as your event class, any log records matching the associated pattern are discarded, and no events are generated for them. For example:
REGEX DISCARD
As a pattern matched, nothing is written to the unmatch log. The log file status records matched include these discarded events.
BTW
[/var/tmp/abc.log;ERROR(.*);error found: RegExp1]
may be better as
[/var/tmp/abc.log;ERROR([^;]*);error found: RegExp1]
.* is greedy and best avoided when possible