Change the type in index from String to Date

I parsed a date from the log but it's type in the index was String. I would like to change it to Date so that i could display lines in kibana in the same order of the log file.
Any suggestions will be apperciated.

Change the mapping and use date instead of text.

hi @dadoonet thanks for the quick reply. i'm a beginner, what i did is that i applied a grok filter


How could i exactly change the mapping please. thanks

That does not change elasticsearch mapping. It just indicates how to extract a SYSLOGTIMESTAMP regular expression and put the extracted value in Date field.

You need to create the appropriate mapping for the Date field. See:

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