elastic search 第一次安装 报错记录

安装版本 elasticsearch-5.5.2
安装路径 /usr/local/es/

启动报错：
/usr/local/es/elasticsearch-5.5.2/bin/
bash ./bash ./elasticsearch

Java HotSpot(TM) 64-Bit Server VM warning: INFO: os::commit_memory(0x0000000085330000, 2060255232, 0) failed; error='Cannot allocate memory' (errno=12)
#
# There is insufficient memory for the Java Runtime Environment to continue.
# Native memory allocation (mmap) failed to map 2060255232 bytes for committing reserved memory.
# An error report file with more information is saved as:
# /usr/local/es/elasticsearch-5.5.2/bin/hs_err_pid2353.log

　　

解决：
切换到配置目录下　　/usr/local/es/elasticsearch-5.5.2/config/
打开　　jvm.options
将 -Xms2g 改为1g　　（改1g不行就试试 改成 512m）

 

再次启动试一试吧。

报错：

org.elasticsearch.bootstrap.StartupException: java.lang.RuntimeException: can not run elasticsearch as root
	at org.elasticsearch.bootstrap.Elasticsearch.init(Elasticsearch.java:127) ~[elasticsearch-5.5.2.jar:5.5.2]
	at org.elasticsearch.bootstrap.Elasticsearch.execute(Elasticsearch.java:114) ~[elasticsearch-5.5.2.jar:5.5.2]
	at org.elasticsearch.cli.EnvironmentAwareCommand.execute(EnvironmentAwareCommand.java:67) ~[elasticsearch-5.5.2.jar:5.5.2]
	at org.elasticsearch.cli.Command.mainWithoutErrorHandling(Command.java:122) ~[elasticsearch-5.5.2.jar:5.5.2]
	at org.elasticsearch.cli.Command.main(Command.java:88) ~[elasticsearch-5.5.2.jar:5.5.2]
	at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.java:91) ~[elasticsearch-5.5.2.jar:5.5.2]
	at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.java:84) ~[elasticsearch-5.5.2.jar:5.5.2]
Caused by: java.lang.RuntimeException: can not run elasticsearch as root
	at org.elasticsearch.bootstrap.Bootstrap.initializeNatives(Bootstrap.java:106) ~[elasticsearch-5.5.2.jar:5.5.2]
	at org.elasticsearch.bootstrap.Bootstrap.setup(Bootstrap.java:194) ~[elasticsearch-5.5.2.jar:5.5.2]
	at org.elasticsearch.bootstrap.Bootstrap.init(Bootstrap.java:351) ~[elasticsearch-5.5.2.jar:5.5.2]
	at org.elasticsearch.bootstrap.Elasticsearch.init(Elasticsearch.java:123) ~[elasticsearch-5.5.2.jar:5.5.2]

　　

意思是不能用root用户来启动，那我们新建一个用户来启动

继续解决这个问题

## 意思是不能用root用户来启动，那我们新建一个用户来启动
[root@VM_0_13_centos bin]# useradd elastic

##新建elastic用户 并且把目录权限赋予给elastic 
[root@VM_0_13_centos bin]#  chown -R elastic:elastic /usr/local/es/elasticsearch-5.5.2/

##我们切换成elastic用户，然后执行
[root@VM_0_13_centos bin]# su elastic
[elastic@VM_0_13_centos bin]$ sh /usr/local/es/elasticsearch-5.5.2/bin/elasticsearch

　　

## -d 后台运行

[elastic@VM_0_13_centos bin]$ sh /usr/local/es/elasticsearch-5.5.2/bin/elasticsearch -d

## 检查是否启动成功
[elastic@VM_0_13_centos bin]$ ps -ef | grep elasticsearch

　　

若出现这个表示成功

 

我们来验证下服务是否正常运行
 curl http://localhost:9200

　　

{
  "name" : "QHNWXbg",
  "cluster_name" : "elasticsearch",
  "cluster_uuid" : "hVyq1z2LR9aEiyBhEsU-fw",
  "version" : {
    "number" : "5.5.2",
    "build_hash" : "b2f0c09",
    "build_date" : "2017-08-14T12:33:14.154Z",
    "build_snapshot" : false,
    "lucene_version" : "6.6.0"
  },
  "tagline" : "You Know, for Search"
}

　　

感谢：
java1234 小锋

https://m.aliyun.com/yunqi/articles/523874