cluster.name: graylog_test
node.master: true
node.data: true
index.number_of_shards: 1
index.number_of_replicas: 0
network.host: _local:ipv4_

cluster.name: graylog_test
node.master: true
node.data: true
network.host: _local:ipv4_

Remove index-level settings from ES 5.x config
Remove index-level settings from ES 5.x config

> Found index level settings on node level configuration.
>
> Since elasticsearch 5.x index level settings can NOT be set on the nodes
> configuration like the elasticsearch.yaml, in system properties or command line
> arguments.In order to upgrade all indices the settings must be updated via the
> /${index}/_settings API. Unless all settings are dynamic all indices must be closed
> in order to apply the upgradeIndices created in the future should use index templates
> to set default values.
>
> Please ensure all required values are updated on all indices by executing:
>
> curl -XPUT 'http://localhost:9200/_all/_settings?preserve_existing=true' -d '{
>   "index.number_of_replicas" : "0",
>   "index.number_of_shards" : "1"
> }'
