![]() ![]() In addition to the Auto timestamp extraction method, there are other methods for timestamp extraction when you index data:Ĭurrent time Sets the timestamp to the current clock time. In the Add Data wizard on the Set Source Type step, these are the Timestamp options: Use these other methods only if you discover that the Splunk indexer is not extracting timestamps correctly. The Splunk indexer automatically recognizes and extracts the timestamps. Most events do not require special timestamp handling. The default method used to extract timestamps from your data is set to Auto. The values in the _time field are the same as the values in the timestamp field in the sample data file because the Splunk indexer assumes that the values in the timestamp field are in the same time zone as the Splunk instance. However, for display purposes the values in the _time field are shown in a human-readable format. The values in the timestamp field in the sample data file are converted to UNIX time and stored in the _time field when the data is indexed. You can see how the timestamp is processed in the Add Data wizard on the Set Source Type step, for example when you add a CSV file. Let's use a set of test data that contains 35 events with various timestamps. When data is indexed and added to your Splunk instance, the Splunk indexer assumes that any timestamps in the data are in the same time zone as your Splunk instance. For example, the United Kingdom uses GMT for most of the year, but switches to British Summer Time (BST) during the summer months. However, some of the countries that use GMT switch to different time zones during their DST period. Neither GMT nor UTC ever change for Daylight Saving Time (DST). ![]() UTC is a time standard that is the basis for time and time zones worldwide.GMT is a time zone officially used in some European and African countries as their local time.However GMT is a time zone and UTC is a time standard. GMT (Greenwich Mean Time) is sometimes confused with UTC (Coordinated Universal Time). This moment in time is sometimes referred to as epoch time. UNIX time is the number of seconds that have elapsed since 00:00:00 Coordinated Universal Time (UTC), 1 January 1970. If your data does not have timestamps, the time at which your data is indexed is used as the timestamp for your events. Regardless of how time is specified in your events, timestamps are converted to UNIX time and stored in the _time field when your data is indexed. The local time is interpreted as the same time zone as the Splunk indexer where the data is indexed. The local time representation of a UTC time, which is expressed with an offset. US Pacific Daylight Time, the timezone where Splunk Headquarters is located.Ī timestamp with an offset from GMT (Greenwich Mean Time)Ī timestamp expressed in UTC (Coordinated Universal Time) The timestamp might be in one of several formats, as shown in the following table: When data is indexed, the Splunk indexer looks for a timestamp in each event. The Splunk platform processes time zones when data is indexed and when data is searched. How time zones are processed by the Splunk platform ![]()
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