# Logstash 5.6 how to add\_field from redis?

**URL:** <https://discuss.elastic.co/t/logstash-5-6-how-to-add-field-from-redis/108855>\
**Category:** Logstash\
**Created:** [November 23, 2017, 9:43am UTC](https://discuss.elastic.co/t/logstash-5-6-how-to-add-field-from-redis/108855 "2017-11-23T09:43:27Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![feranwq](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/feranwq/32/23820_2.png) [@feranwq](https://discuss.elastic.co/u/feranwq)\
**Post date:** [November 23, 2017, 9:43am UTC](https://discuss.elastic.co/t/logstash-5-6-how-to-add-field-from-redis/108855/1 "2017-11-23T09:43:28Z")

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input log like this  
"""  
{"@timestamp":"2017-11-23T16:10:20+08:00","host":"192.168.3.251","userip":"192.168.3.254","size":1973,"responsetime":0.000,"upstreamtime":"-","upstreamhost":"-","http\_host":"192.168.3.251","url":"/","xff":"-","r  
eferer":"-","agent":"curl/7.19.7 (x86\_64-suse-linux-gnu) libcurl/7.19.7 OpenSSL/0.9.8j zlib/1.2.3 libidn/1.10","status":"200"}  
"""  
i want add\_field "usermac":"0F0F0F0F0F0F",  
ip-mac mapping in redis,key is ip value is mac,use GET 192.168.3.254 can get usermac  
i dont know how to achieve in Logstash

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<div class="post-metadata">

**Author:** ![magnusbaeck](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/magnusbaeck/32/44943_2.png) [@magnusbaeck](https://discuss.elastic.co/u/magnusbaeck)\
**Post date:** [November 23, 2017, 2:20pm UTC](https://discuss.elastic.co/t/logstash-5-6-how-to-add-field-from-redis/108855/2 "2017-11-23T14:20:49Z")

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So you're basically looking for a translate or jdbc\_streaming filter but for Redis. It looks like [https://github.com/meulop/logstash-filter-redis](https://github.com/meulop/logstash-filter-redis) would do the job but it's not a standard plugin and I don't know anything about its quality.

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**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [December 21, 2017, 2:21pm UTC](https://discuss.elastic.co/t/logstash-5-6-how-to-add-field-from-redis/108855/3 "2017-12-21T14:21:01Z")

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