# Cluster going down to RED while using synonyms

**URL:** <https://discuss.elastic.co/t/cluster-going-down-to-red-while-using-synonyms/43988>\
**Category:** Elasticsearch\
**Created:** [March 10, 2016, 8:03am UTC](https://discuss.elastic.co/t/cluster-going-down-to-red-while-using-synonyms/43988 "2016-03-10T08:03:29Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![soorajhere](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/soorajhere/32/8396_2.png) [@soorajhere](https://discuss.elastic.co/u/soorajhere)\
**Post date:** [March 10, 2016, 8:03am UTC](https://discuss.elastic.co/t/cluster-going-down-to-red-while-using-synonyms/43988/1 "2016-03-10T08:03:30Z")

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Hello All...

I am new to elastic search and started implementing it in our project. There is a functionality to use abbreviations search for us and i wanted to make use of synonyms. But after i set synonyms using synonym path, cluster goes to RED. Any one experienced this issue before? Below are my infra and data details. Please note that i haven't changed any default configuration of ES using yml file.

Running ES 2.1 on windows as a windows service  
4 GB ram, 300 GB HDD

Two indexes - Locations and LandLots  
Location Type- 4 fields, string (building name, postal code, road name, house number)  
Land Lot type - 2 fields - string (objectid and lot key)

Before indexing , cluster health is Green  
After indexing, cluster heath turns yellow  
After applying synonym analyzer settings, cluster health turns RED and all shards goes un allocated.

Q1- Do i need to modify the default settings for ES by updating yml file?  
Q2- since i am running ES as a service, how can i view the log file in case of why the cluster is turning RED after applying synonyms?

Any help is appreciated. This is my first post, so if this is a known and solved issue, please redirect me to that.

Thanks,  
Sooraj.S

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**Author:** ![warkolm](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/warkolm/32/39224_2.png) [@warkolm](https://discuss.elastic.co/u/warkolm)\
**Post date:** [March 12, 2016, 2:20am UTC](https://discuss.elastic.co/t/cluster-going-down-to-red-while-using-synonyms/43988/2 "2016-03-12T02:20:49Z")

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You should check your ES logs to see what is happening.

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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:** [July 5, 2017, 11:08pm UTC](https://discuss.elastic.co/t/cluster-going-down-to-red-while-using-synonyms/43988/3 "2017-07-05T23:08:58Z")

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