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
Related
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 lot of logs and every record contains a url. And I have about 2000+ url patterns to filter the log. Some patterns are regular pattern with capturable group. I want to get url and the matched pattern and, if possible, the captured groupes. Is there a java lib can help me. Or any Algorithm which can solve my problem. Or anyting else which related to my problem. Thanks a lot.
Take a look at java regular expressions library (link).
You can construct a single large pattern by concatenating your original patterns with | between them (use () to specify that you don't want just 1 character).
The regular expression can be compiled into an efficient matching finite automata, that you can run over your data. Just make sure you compile it once and reuse it for every record.
It will handle extracting groups, but you need to handle the groups in a generic way (since any group can be matched). If it makes it easier consider using named groups to make handling simpler.
I am trying to filter logs based on resource mapping using "protoPayload.resource" property. It works fine if I specify the exact resource name.
metadata.serviceName="appengine.googleapis.com"
metadata.labels."appengine.googleapis.com/module_id"={module}
metadata.labels."appengine.googleapis.com/version_id"={version}
log="appengine.googleapis.com/request_log"
protoPayload.resource = ***********
How to supply a regex for this property to filter out logs?
Maven dependency for logging api:
<dependency>
<groupId>com.google.apis</groupId>
<artifactId>google-api-services-logging</artifactId>
<version>v2beta1-rev9-1.21.0</version>
</dependency>
The Stackdriver Logging API does not currently support regular expressions.
It does, however, support a "has" operator through using a : instead of an = in your filter expression, e.g. path.to.field: "value". This matches substrings of the actual value in a case-insensitive fashion, which is most of what people typically used it for anyway.
See also: Write effective advanced filters
If the "has" operator doesn't accomplish your goal, consider filing feedback through the speech bubble button in the top right of the Cloud Console providing details of your use case and what you're ultimately trying to accomplish, and we'll incorporate that feedback as we plan the future direction of the product.
The advanced queries documentation page lists the regex operator =~
Further, there is a dedicated documentation page specifically for the regular expression use in the new log viewer. As of 2020-09-13, this page is marked as "new"
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.
I am writing a complex application (a compiler analysis). To debug it I need to examine the application's execution trace to determine how its values and data structures evolve during its execution. It is quite common for me to generate megabytes of text output for a single run and sifting my way through all that is very labor-intensive. To help me manage these logs I've written my own library that formats them in HTML and makes it easy to color text from different code regions and indent code in called functions. An example of the output is here.
My question is: is there any better solution than my own home-spun library? I need some way to emit debug logs that may include arbitrary text and images and visually structure them and if possible, index them so that I can easily find the region of the output I'm most interested. Is there anything like this out there?
Regardless you didn't mentioned a language applied, I'd like to propose apache Log4XXX family: http://logging.apache.org/
It offers customizable details level as well as tag-driven loggers. GUI tool (chainsaw) can be combined with "old good" GREP approach (so you see only what you're interested in at the moment).
Colorizing, search and filtering using an expression syntax is available in the latest developer snapshot of Chainsaw. The expression syntax also supports regular expressions (using the 'like' keyword).
Chainsaw can parse any regular text log file, not just log files generated by log4j.
The latest developer snapshot of Chainsaw is available here:
http://people.apache.org/~sdeboy
The File, load Chainsaw configuration menu item is where you define the 'format' and location of the log file you want to process, and the expression syntax can be found in the tutorial, available from the help menu.
Feel free to email the log4j users list if you have additional questions.
I created a framework that might help you, https://github.com/pablito900/VisualLogs