centos環境，下載就不說了，跑起來的時候報下面的錯

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  (強制執行root執行)