安装elasticsearch碰到的坑

centos环境，下载就不说了，跑起来的时候报下面的错

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.

bin/elasticsearch: line 78: cd: bin/..: Not a directory
Error: Could not find or load main class org.elasticsearch.bootstrap.Elasticsearch

bin/elasticsearch -Des.insecure.allow.root=true  (强制运行root运行)

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