ElasticSearch异常归纳(能力工场小马哥)

• 异常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

• 异常1解决方式:

在es-linux环境中,不允许使用root用户运行ElasticSearch,所以添加一个新的普通用户就可以了(linux命令如下)

1 groupadd es　　　　　 -- 创建一个用户组(我使用的es作为组名)
2 useradd -g es es　　 -- 创建一个用户(我使用es作为用户名,并加入到es组里面)
3 passwd es　　　　　　 -- 为刚刚创建的es用户添加密码
4 su es　　　　　　　　　-- 切换到es用户下
5 $ElasticSearch_Home/bin/elasticsearch  --启动ElasticSearch

原文地址：https://www.cnblogs.com/hadoop2015/p/9420287.html