[[elasticsearch-service]]
== Elasticsearch service
`Elasticsearch service` provides `elasticsearch.client` program API to communicate with Elasticsearch server HTTP API.

NOTE: The Elasticsearch service is only available server side. You can use the {kib-repo}blob/{branch}/src/plugins/data/README.mdx[Data plugin].

`elasticsearch.client` interacts with Elasticsearch service on behalf of:

- `kibana_system` user via `elasticsearch.client.asInternalUser.*` methods.
- a current end-user via `elasticsearch.client.asCurrentUser.*` methods. In this case Elasticsearch client should be given the current user credentials.
See <<scoped-services>> and <<development-security>>.

[source,typescript]
----
import { CoreStart, Plugin } from '@kbn/core/public';

export class MyPlugin implements Plugin {
  public start(core: CoreStart) {
    async function asyncTask() {
      const result = await core.elasticsearch.client.asInternalUser.ping(…);
    }
    asyncTask();
  }
}
----

For advanced use-cases, such as a search for specific objects, use the {kib-repo}blob/{branch}/x-pack/plugins/global_search/README.md[Global search plugin].