• 異常1: can not run elasticsearch as root

[WARN ][o.e.b.ElasticsearchUncaughtExceptionHandler] [node-2] uncaught exception in thread [main]
org.elasticsearch.bootstrap.StartupException: java.lang.RuntimeException: can not run elasticsearch as root
at org.elasticsearch.bootstrap.Elasticsearch.init(Elasticsearch.java:
 
125) ~[elasticsearch-5.1.2.jar:5.1.2]
at org.elasticsearch.bootstrap.Elasticsearch.execute(Elasticsearch.java:112) ~[elasticsearch-5.1.2.jar:5.1.2]
at org.elasticsearch.cli.SettingCommand.execute(SettingCommand.java:54) ~[elasticsearch-5.1.2.jar:5.1.2]
at org.elasticsearch.cli.Command.mainWithoutErrorHandling(Command.java:
 
122) ~[elasticsearch-5.1.2.jar:5.1.2]
at org.elasticsearch.cli.Command.main(Command.java:88) ~[elasticsearch-5.1.2.jar:5.1.2]
at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.java:89) ~[elasticsearch-5.1.2.jar:5.1.2]
at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.java:
 
82) ~[elasticsearch-5.1.2.jar:5.1.2]
Caused by: java.lang.RuntimeException: can not run elasticsearch as root
at org.elasticsearch.bootstrap.Bootstrap.initializeNatives(Bootstrap.java:100) ~[elasticsearch-5.1.2.jar:5.1.2]
at org.elasticsearch.bootstrap.Bootstrap.setup(Bootstrap.java:176) ~[elasticsearch-5.1.2.jar:5.1.2]
at org.elasticsearch.bootstrap.Bootstrap.init(Bootstrap.java:306) ~[elasticsearch-5.1.2.jar:5.1.2]
at org.elasticsearch.bootstrap.Elasticsearch.init(Elasticsearch.java:121) ~[elasticsearch-5.1.2.jar:5.1.2]
... 6 more

• 異常1解決方式:

在es-linux環境中,不允許使用root用戶運行ElasticSearch,所以添加一個新的普通用戶就可以了(linux命令如下)

1 groupadd es　　　　　 -- 創建一個用戶組(我使用的es作為組名)
2 useradd -g es es　　 -- 創建一個用戶(我使用es作為用戶名,並加入到es組裏面)
3 passwd es　　　　　　 -- 為剛剛創建的es用戶添加密碼
4 su es　　　　　　　　　-- 切換到es用戶下
5 $ElasticSearch_Home/bin/elasticsearch  --啟動ElasticSearch

ElasticSearch異常歸納(能力工場小馬哥)