how to migrate mysql data to ElasticSearch realtime

Question

I have a mysql database with couple tables, I wanna migrate the mysql data to ElasticSearch. It's easy to migrate the whole database to ES via a batch job. But how should I update ES from mysql realtime. i.e if there was a update operation in mysql then I should do the same operation in ES. I researched mysql binLog which can reflect any changes from mysql. But I have to parse binLog to ES syntax, I think it's really painful. Thanks! (the same case with Solr)

Answer 1

There is an existing project which takes your binlog, transforms it and ships it to Elasticsearch, You can check it out at: https://github.com/siddontang/go-mysql-elasticsearch

Another one would be this one: https://github.com/noplay/python-mysql-replication.

Note, however, that whichever you pick, it's a good practice to pre-create your index and mappings before indexing your binlog. That gives you more control over your data.

UPDATE:

Here is another interesting blog article on the subject: How to keep Elasticsearch synchronized with a relational database using Logstash