Elasticsearch dynamically modify replica configuration, additions and deletions replica

1. Get all Current index configurations

Curl-xget http://localhost:9200/_settings

2. Get the configuration of some index

Curl-xget http://localhost:9200/test-*/_settings

3. Dynamically modify some index configurations to increase replica

Curl-xput http://localhost:9200/test-*/_settings-d ' {"Replicas": 1} '

4. Dynamically modify some index configuration, delete replica

Curl-xput http://localhost:9200/test-*/_settings-d ' {"Replicas": 0} '

Measured new replica speed quickly, CPU accounted for is not high, far below the re-index data, basically close to the speed of remote copy files. After replica, logstash or ES will have cluster load balancing, such as Replica 1, basic primary and replica CPU account balance, performance of ES overall consumption of more than 20%CPU, disk space consumption 1 time times.

Elasticsearch dynamically modify replica configuration, additions and deletions replica