centos下root运行Elasticsearch异常问题解决

 在CentOS 6.5 上运行Elasticsearch 2.3,异常如下:

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:270)
    at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.java:35)
Refer to the log for complete error details.

异常描述为不能以root权限运行Elasticsearch.解决办法是运行时加上参数:

bin/elasticsearch -Des.insecure.allow.root=true

或者修改bin/elasticsearch,加上ES_JAVA_OPTS属性:

ES_JAVA_OPTS="-Des.insecure.allow.root=true"

保存之后重启Elasticsearch。

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