ELK 安装x-pack后 elasticsearch认证失败，跪求大神。。。

下面是报错日志，跪求打大神们
[2018-04-10T20:58:39,003][INFO ][o.e.n.Node               ] [P6aM7PB] started
[2018-04-10T20:58:39,566][INFO ][o.e.x.s.a.AuthenticationService] [P6aM7PB] Authentication of [elastic] was terminated by realm [reserv
ed] - failed to authenticate user [elastic]
[2018-04-10T20:58:39,712][INFO ][o.e.x.s.a.AuthenticationService] [P6aM7PB] Authentication of [elastic] was terminated by realm [reserv
ed] - failed to authenticate user [elastic]
[2018-04-10T20:58:39,868][INFO ][o.e.x.s.a.AuthenticationService] [P6aM7PB] Authentication of [elastic] was terminated by realm [reserv
ed] - failed to authenticate user [elastic]
[2018-04-10T20:58:39,941][INFO ][o.e.l.LicenseService     ] [P6aM7PB] license [6150bf27-66f3-46d6-8406-2e468a1b3a11] mode [trial] - val
id
[2018-04-10T20:58:39,968][INFO ][o.e.g.GatewayService     ] [P6aM7PB] recovered [11] indices into cluster_state
[2018-04-10T20:58:40,031][INFO ][o.e.x.s.a.AuthenticationService] [P6aM7PB] Authentication of [elastic] was terminated by realm [reserv
ed] - failed to authenticate user [elastic]
[2018-04-10T20:58:42,911][DEBUG][o.e.a.s.TransportSearchAction] [P6aM7PB] All shards failed for phase: [query]
[2018-04-10T20:58:42,913][ERROR][o.e.x.w.i.s.ExecutableSearchInput] [P6aM7PB] failed to execute [search] input for watch [xqwoCxUGSx6YK
n33BLzyRA_elasticsearch_version_mismatch], reason [all shards failed]
[2018-04-10T20:58:42,994][WARN ][o.e.x.w.e.ExecutionService] [P6aM7PB] failed to execute watch [xqwoCxUGSx6YKn33BLzyRA_elasticsearch_ve
rsion_mismatch]
Killed04-10T20:58:44,914][INFO ][o.e.c.r.a.AllocationService] [P6aM7PB] Cluster health status changed from [RED] to [YELLOW] (reason: [
works@iZ2ze52k8qd9nve5eebavnZ:~/sgt/elk/elasticsearch-6.2.3$