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| Software | Version | Required for | Notes |
|---|---|---|---|
| JAVA | 1.8+ | always | The clowder software is written in Scala and javascript and requires JAVA to execute. Clowder has been tested with OpenJDK |
| MongoDB | 3.2-3.5 (3.6 not supported) | always | Clowder uses MongoDB to store the information about the files and if configured the files as well. |
| RabbitMQ | 3.5+ | extractors | RabbitMQ is used to communicate between Clowder and the extractors. When deploying extractors it is required to deploy RabbitMQ as well. |
| ElasticSearch | 2.x+ (5.x+ not yet testedsupported) | searching | ElasticSearch is used to search Clowder. We have not tested clowder with version 2.0 or larger of ElasticSearch |
| GeoServer | 2.7+ | geospatial overlays | GeoServer is used to with the geospatial extractor to generate overlays for maps. |
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