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This article mainly explains "how to solve the Elasticsearch exception in the operation of root under centos". The content in the article is simple and clear, and it is easy to learn and understand. Please follow the editor's train of thought to study and learn "how to solve the abnormal Elasticsearch in root under centos".

Run Elasticsearch 2.3 on CentOS 6.5.The exception is as follows:

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.

The exception is described as not being able to run Elasticsearch. Exe with root privileges. The workaround is to add parameters at run time:

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

Or modify the bin/elasticsearch and add the ES_JAVA_OPTS attribute:

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

Restart Elasticsearch after saving.

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