How to Increase number of shards of an existing Index

Elastic Stack Elasticsearch
1

Hi All,

I am new to ES stack. I have a question related to reindexing-

I have created an index with default option(5 shards and 1 replica). Can I increase number of shards for my index if data size of my index increases in future? Or I need to re-index the index with updated number of shards.
We have read in the documentation that its always better to create index with required number of shard but I our case we are not able to calculate data size as it is still growing.

Thanks,
Shiveendra

2

Can I increase number of shards for my index if data size of my index increases in future?

The practice is to create a new index and start indexing data into the new index.

Time based indices are a good example. Check out the elasticsearch documentation for time based indices.

3

What is your use case? Which version are you using?

4

thanks for the reply. We want to keep reporting data. This data is timestamp driven, it will grow with time. If I will keep data in one index then may be I have to increase number of shards of that index.

5

Thanks for the reply. It seems this will solve my problem. I just need to check how to use composite query in this case. As index will be created on daily basis.

6

Thanks for the help. please close this topic.

7

You shouldn't be using a single index for this type of data.

The best option is to use ILM - https://www.elastic.co/guide/en/elasticsearch///reference/current/index-lifecycle-management.html - or alternatively, time based indices.

8

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