how to parse nginx access log with fluentd and send it to elasticsearch

Behrouz hasanbeygi
1 min readFeb 2, 2019

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for the past week i was working on sending nginx custom json log to elasticsearch with replacing /hide sensitive data , one of the most painful problem with fluntd was problem in parsing json format , nginx was working correct as i expected but fluentd was not able to parsing some of access logs , i had tried many things but hell no , it was not working. in the end when i was going to give up i just tell myself to reading the parser code.

all the time i was thinking fluentd use yajl ( due to the popularity and maturity) but no fluentd use oj as json parser and all the problem was on oj.

this is how i send nginx log to elasticsearch

send nginx log to fluentd and elasticsearch

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