I have a city name field and I want to visualize it on the map. I am wondering How I can achieve this because the GEOIP filter takes IP but I don't have an IP address.
There is nothing built into logstash to do that. You could use an http filter to send a request using the Nominatum /search API, although that feels like overkill. If you can find a list of city names and coordinates you could do it locally using a translate filter.
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