Configure authentication with active directory

Elasticsearch don't start. When I put the command "systemctl restart elasticsearch.service", the status of Elasticsearch is failed.

I follow the tutorial https://www.elastic.co/guide/en/x-pack/current/active-directory-realm.html

It's 6.2.

I get these errors:

[2018-02-21T08:50:11,786][INFO ][o.e.x.w.a.l.ExecutableLoggingAction] [logs-els-1] Found 1 errors in the logs
[2018-02-21T08:50:22,443][INFO ][o.e.x.w.a.l.ExecutableLoggingAction] [logs-els-1] Found 1 errors in the logs
[2018-02-21T08:50:32,835][INFO ][o.e.x.w.a.l.ExecutableLoggingAction] [logs-els-1] Found 1 errors in the logs
[2018-02-21T08:50:43,292][INFO ][o.e.x.w.a.l.ExecutableLoggingAction] [logs-els-1] Found 1 errors in the logs
[2018-02-21T08:50:53,794][INFO ][o.e.x.w.a.l.ExecutableLoggingAction] [logs-els-1] Found 1 errors in the logs
[2018-02-21T08:51:04,299][INFO ][o.e.x.w.a.l.ExecutableLoggingAction] [logs-els-1] Found 1 errors in the logs
[2018-02-21T08:51:14,803][INFO ][o.e.x.w.a.l.ExecutableLoggingAction] [logs-els-1] Found 1 errors in the logs
[2018-02-21T08:51:25,444][INFO ][o.e.x.w.a.l.ExecutableLoggingAction] [logs-els-1] Found 1 errors in the logs
[2018-02-21T08:51:35,919][INFO ][o.e.x.w.a.l.ExecutableLoggingAction] [logs-els-1] Found 1 errors in the logs
[2018-02-21T08:51:46,321][INFO ][o.e.x.w.a.l.ExecutableLoggingAction] [logs-els-1] Found 1 errors in the logs
[2018-02-21T08:51:56,825][INFO ][o.e.x.w.a.l.ExecutableLoggingAction] [logs-els-1] Found 1 errors in the logs
[2018-02-21T08:52:07,323][INFO ][o.e.x.w.a.l.ExecutableLoggingAction] [logs-els-1] Found 1 errors in the logs