General Health

Get Cluster Health

1

curl -XGET 'http://localhost:9200/_cluster/health?pretty=true'

Indexes

Troubleshooting

List all indexes with health

1

curl -XGET 'localhost:9200/_cat/indices'

Templates

Listing

List all existing templates

1

curl -XGET localhost:9200/_template/ | jq '.'

Scaling from One to Many Gotchas

Set number_of_replicas

After you add new nodes to your cluster, and before you remove any, you need to set the number of replicas to the number of nodes that you have to ensure that you have all of your data on all nodes.

1

curl -XPUT 'localhost:9200/logstash-*/_settings' -d '{ "number_of_replicas": 4 }'