How to fix the limit of 1000 shards per cluster in ES

Let’s first take a look at the error message in the console.

elasticsearch.exceptions.RequestError: 
RequestError(400, 'validation_exception', 'Validation Failed: 1: 
this action would add [2] shards, 
but this cluster currently has [1000]/[1000] maximum normal shards open;')

The error message you’re seeing indicates that the maximum number of shards allowed in your Elasticsearch cluster has been reached. By default, Elasticsearch has a limit of 1000 shards per cluster.

To fix this error, you have a few options:

1. Increase the maximum number of shards: You can increase the maximum number of shards allowed in your Elasticsearch cluster by modifying the cluster.max_shards_per_node setting in your Elasticsearch configuration file (elasticsearch.yml). Set it to a higher value that suits your needs. After making the change, you’ll need to restart Elasticsearch for the new setting to take effect. Or to modify the cluster.max_shards_per_node setting in Elasticsearch using the API, you can make a PUT request to the _cluster/settings endpoint. Here’s an example using the curl command:

   curl -XPUT -H "Content-Type: application/json" -d '{
     "persistent": {
       "cluster.max_shards_per_node": {{new_max_shards}}
     }
   }' http://localhost:9200/_cluster/settings
   

   Replace {{new_max_shards}} with the desired new value for cluster.max_shards_per_node.
   Make sure to adjust the URL (http://localhost:9200) if your Elasticsearch cluster is running on a different host or port.
   Note that modifying the cluster settings requires administrative privileges. Also, keep in mind that changing this setting will affect the entire cluster, so consider the impact on performance and resource usage before making any changes.

2. Reduce the number of shards: If you have control over the index settings, you can reduce the number of shards for your indices. You can either merge smaller indices into larger ones or reduce the number of shards when creating new indices. This will help free up shard slots in your cluster.

3. Delete unnecessary indices: If you have any unnecessary indices that are no longer needed, you can delete them to free up shard slots. However, be cautious when deleting indices as it will permanently remove the data.

Remember to consider the performance and resource limitations of your Elasticsearch cluster when making changes to the shard configuration.文章来源地址https://www.toymoban.com/news/detail-779161.html

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