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I am using ELK to create dashboards from my log files. I have a log file with entries that contain an id value and a "success"/"failure" value, displaying whether an operation with a given id succeeded or failed. Each operation/id can fail an unlimited number of times and succeed at most once. In my Kibana dashboard I want to display the count of log entries with a "failure" value for each operation id, but I want to filter out cases where a "success" log entry for the id exists. i.e. I am only interested in operations that never succeeded. Any hints for tricks that would achieve this?
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To search for an exact string, you need to wrap the string in double quotation marks. Without quotation marks, the search in the example would match any documents containing one of the following words: "Cannot" OR "change" OR "the" OR "info" OR "a" OR "user".
Regular expressionsThey can be used, for example, for partial and case-insensitive matching or searching for terms containing special characters. To embed regular expressions in a Kibana query, you need to wrap them in forward-slashes (“/”).
Use the Logs app in Kibana to explore and filter your logs in real time. You can customize the output to focus on the data you want to see and to control how you see it. You can also view related application traces or uptime information where available.
This is easy in Kibana 5 search bar. Just add a filter
!(_exists_:"your_variable") you can toggle the filter or write the inverse query as
_exists_:"your_variable" In Kibana 4 and Kibana 3 you can use this query which is now deprecated
_missing_:"your_variable" NOTE: In Elasticsearch 7.x, Kibana now has a pull down to select KQL or Lucene style queries in the search bar. Be mindful that syntax such as _exists_:FIELD is a Lucene syntax and you need to set the pulldown accordingly.
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