# Packetbeat invalid\_index\_name

**URL:** <https://discuss.elastic.co/t/packetbeat-invalid-index-name/67152>\
**Category:** Beats\
**Tags:** packetbeat\
**Created:** [November 25, 2016, 4:50am UTC](https://discuss.elastic.co/t/packetbeat-invalid-index-name/67152 "2016-11-25T04:50:24Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![james777](https://avatars.discourse-cdn.com/v4/letter/j/67e7ee/32.png) [@james777](https://discuss.elastic.co/u/james777)\
**Post date:** [November 25, 2016, 4:50am UTC](https://discuss.elastic.co/t/packetbeat-invalid-index-name/67152/1 "2016-11-25T04:50:24Z")

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Hi,  
I am trying to run packetbeat 5.0.1 in centos 6, while running I am getting the below error log  
2016-11-25T13:20:01+09:00 WARN Can not index event (status=400): {"type":"invalid\_index\_name\_exception","reason":"Invalid index name [[packetbeat-2016.11.25.PM](http://packetbeat-2016.11.25.PM)], must be lowercase","index\_uuid":"_na_","index":"[packetbeat-2016.11.25.PM](http://packetbeat-2016.11.25.PM)"}  
2016-11-25T13:20:01+09:00 WARN Can not index event (status=400): {"type":"invalid\_index\_name\_exception","reason":"Invalid index name [[packetbeat-2016.11.25.PM](http://packetbeat-2016.11.25.PM)], must be lowercase","index\_uuid":"_na_","index":"[packetbeat-2016.11.25.PM](http://packetbeat-2016.11.25.PM)"}  
2016-11-25T13:20:01+09:00 WARN Can not index event (status=400): {"type":"invalid\_index\_name\_exception","reason":"Invalid index name [[packetbeat-2016.11.25.PM](http://packetbeat-2016.11.25.PM)], must be lowercase","index\_uuid":"_na_","index":"[packetbeat-2016.11.25.PM](http://packetbeat-2016.11.25.PM)"}  
2016-11-25T13:20:01+09:00 WARN Can not index event (status=400): {"type":"invalid\_index\_name\_exception","reason":"Invalid index name [[packetbeat-2016.11.25.PM](http://packetbeat-2016.11.25.PM)], must be lowercase","index\_uuid":"_na_","index":"[packetbeat-2016.11.25.PM](http://packetbeat-2016.11.25.PM)"}

in my packetbeat.yml I have specified elasticsearch

output.elasticsearch:  
index: "packetbeat-%{+yyyy.MM.dd.aa}"

I am not sure what I am doing, any idea?  
Thank you!

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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 25, 2016, 5:10am UTC](https://discuss.elastic.co/t/packetbeat-invalid-index-name/67152/2 "2016-11-25T05:10:02Z")

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As the error message says, index names must be lowercase. Apparently you can't use "aa" in index name patterns. Do you really need to split each day's index in two?

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<div class="post-metadata">

**Author:** ![james777](https://avatars.discourse-cdn.com/v4/letter/j/67e7ee/32.png) [@james777](https://discuss.elastic.co/u/james777)\
**Post date:** [November 25, 2016, 7:38am UTC](https://discuss.elastic.co/t/packetbeat-invalid-index-name/67152/3 "2016-11-25T07:38:18Z")

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yes, It has to be separated for storage capacity

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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 25, 2016, 7:40am UTC](https://discuss.elastic.co/t/packetbeat-invalid-index-name/67152/4 "2016-11-25T07:40:55Z")

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How big would a daily index be? Perhaps you can do hourly indexes?

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<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [December 23, 2016, 7:41am UTC](https://discuss.elastic.co/t/packetbeat-invalid-index-name/67152/5 "2016-12-23T07:41:11Z")

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