don't run elasticsearch as root

Elasticsearch日志全文搜索环境配置好后,执行bin/elasticsearch命令运行后，出现java.lang.RuntimeException: don't run elasticsearch as root异常。显然这是提示

不能使用root用户直接运行，可以通过使用普通用户登录。

[root@localhost bin]# ./elasticsearch

Exception in thread "main" java.lang.RuntimeException: don't run elasticsearch as root.

at org.elasticsearch.bootstrap.Bootstrap.initializeNatives(Bootstrap.java:93)

at org.elasticsearch.bootstrap.Bootstrap.setup(Bootstrap.java:144)

at org.elasticsearch.bootstrap.Bootstrap.init(Bootstrap.java:285)

at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.java:35)

Refer to the log for complete error details.

[root@localhost bin]# ./elasticsearch -d

[root@localhost bin]# Exception in thread "main" java.lang.RuntimeException: don't run elasticsearch as root.

at org.elasticsearch.bootstrap.Bootstrap.initializeNatives(Bootstrap.java:93)

at org.elasticsearch.bootstrap.Bootstrap.setup(Bootstrap.java:144)

at org.elasticsearch.bootstrap.Bootstrap.init(Bootstrap.java:285)

at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.java:35)

Refer to the log for complete error details.

然而普通用户执行ElasticSearch，也提示权限不够错误

[wang@localhost bin]$ elasticsearch

log4j:ERROR setFile(null,true) call failed.

java.io.FileNotFoundException: /usr/local/elasticsearch/logs/elasticsearch.log (权限不够)

at java.io.FileOutputStream.open(Native Method)

at java.io.FileOutputStream.<init>(FileOutputStream.java:221)

at java.io.FileOutputStream.<init>(FileOutputStream.java:142)

at org.apache.log4j.FileAppender.setFile(FileAppender.java:294)

at org.apache.log4j.FileAppender.activateOptions(FileAppender.java:165)

at org.apache.log4j.DailyRollingFileAppender.activateOptions(DailyRollingFileAppender.java:223)

at org.apache.log4j.config.PropertySetter.activate(PropertySetter.java:307)

at org.apache.log4j.config.PropertySetter.setProperties(PropertySetter.java:172)

at org.apache.log4j.config.PropertySetter.setProperties(PropertySetter.java:104)

at org.apache.log4j.PropertyConfigurator.parseAppender(PropertyConfigurator.java:842)

at org.apache.log4j.PropertyConfigurator.parseCategory(PropertyConfigurator.java:768)

at org.apache.log4j.PropertyConfigurator.configureRootCategory(PropertyConfigurator.java:648)

at org.apache.log4j.PropertyConfigurator.doConfigure(PropertyConfigurator.java:514)

at org.apache.log4j.PropertyConfigurator.configure(PropertyConfigurator.java:440)

at org.elasticsearch.common.logging.log4j.LogConfigurator.configure(LogConfigurator.java:128)

at org.elasticsearch.bootstrap.Bootstrap.setupLogging(Bootstrap.java:204)

at org.elasticsearch.bootstrap.Bootstrap.init(Bootstrap.java:258)

at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.java:35)

log4j:ERROR Either File or DatePattern options are not set for appender [file].

log4j:ERROR setFile(null,true) call failed.

java.io.FileNotFoundException: /usr/local/elasticsearch/logs/elasticsearch_deprecation.log (权限不够)