Linux上安装ElasticSearch_Linux系统教程

今天搞了一下ElasticSearch在Linux上的安装，结果我在安装ElasticSearch的时候遇到了下面的一系列问题，现在写下来让自己记住，经常翻看，希望也能帮到你们。

1.运行环境：

centos6.4

elasticsearch-2.3.5

jdk1.7.0_51（我虚拟机的jdk版本）

2.我先去elasticsearch的官方网站上下载了elasticsearch-2.3.5.tar.gz的安装包，下载到我window系统下的D盘内。然后我又在linux系统下使用命令窗口把window系统下的D盘内的elasticsearch-2.3.5.tar.gz的安装包拷贝到linux系统内。

3.现在在linux系统里面就有了elasticsearch-2.3.5.tar.gz的安装包，我放在了/usr/local/es下面，解压后得到elasticsearch-2.3.5。

4.然后我就使用命令启动elasticsearch：

cd /usr/local/eselasticsearch-2.3.5/bin —–> 进入bin目录下面

./elasticsearch ————————————-> 启动elasticsearch

然后就报了以下的异常:

[root@localhost bin]# ./elasticsearch

[2017-03-16 11:52:59,903][WARN ][bootstrap ] jvm uses the client vm, make sure to run Java with the server vm for best performance by adding -server to the command line

Exception in thread “main” java.lang.RuntimeException: Java version: Oracle Corporation 1.7.0_51 [Java HotSpot(TM) Client VM 24.51-b03] suffers from critical bug https://bugs.openjdk.java.net/browse/JDK-8024830 which can cause data corruption.

Please upgrade the JVM, see

http://www.elastic.co/guide/en/elasticsearch/reference/current/_installation.html for current recommendations.

If you absolutely cannot upgrade, please add -XX:-UseSuperWord to the JAVA_OPTS environment variable.

Upgrading is preferred, this workaround will result in degraded performance.

at org.elasticsearch.bootstrap.JVMCheck.check(JVMCheck.java:123)

at org.elasticsearch.bootstrap.Bootstrap.init(Bootstrap.java:268)

at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.java:35)

Refer to the log for complete error details.

这些异常的大概意思是：

解决的方法有两种：

第一种:升级JVM

第二种:如果完全不能升级，就添加 -XX:-UseSuperWord to the JAVA_OPTS environment variable.但是升级是有先的方案，第二种方案会使性能下降。

5.我先采用了第一种方法，去升级jdk到1.8.0_112。这里升级jdk的版本跟我之前讲到的【linux系统安装jdk】是一个步骤。升级完以后测试java环境java -version，结果显示的还是我原来jdk1.7.0_51的环境，于是我重新连接了一下虚拟机IP，在测试java -version，结果jdk1.8.0_112的环境升级成功。于是我就直接去启动elasticsearch。结果又给我报了下面的异常：

[root@localhost 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:270)

at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.java:35)

Refer to the log for complete error details.

解决了jdk的问题现在又蹦出来另一个问题。这个异常的意思是用root用户是不能直接运行elasticsearch的，后来我想起我还有一个Hadoop的用户，于是就又换了个hadoop的用户：su hadoop。用hadoop用户再次启动。

结果还是报了下面的异常：

[root@localhost bin]# su hadoop

[hadoop@localhost bin]$ ./elasticsearch

log4j:ERROR setFile(null,true) call failed.

java.io.FileNotFoundException: /usr/local/es/elasticsearch-2.3.5/logs/elasticsearch.log (Permission denied)

at java.io.FileOutputStream.open0(Native Method)

at java.io.FileOutputStream.open(FileOutputStream.java:270)

at java.io.FileOutputStream.(FileOutputStream.java:213)

at java.io.FileOutputStream.(FileOutputStream.java:133)

at org.apache.log4j.FileAppender.setFile(FileAppender.java:294)

at org.apache.log4j.FileAppender.activateOptions(FileAppender.java:165)

at org.apache.log4j.DailyRollingFileAppender.activateOptions(DailyRollingFileAppender.java:223)

at org.apache.log4j.config.PropertySetter.activate(PropertySetter.java:307)

at org.apache.log4j.config.PropertySetter.setProperties(PropertySetter.java:172)

at org.apache.log4j.config.PropertySetter.setProperties(PropertySetter.java:104)

at org.apache.log4j.PropertyConfigurator.parseAppender(PropertyConfigurator.java:842)

at org.apache.log4j.PropertyConfigurator.parseCategory(PropertyConfigurator.java:768)

at org.apache.log4j.PropertyConfigurator.configureRootCategory(PropertyConfigurator.java:648)

at org.apache.log4j.PropertyConfigurator.doConfigure(PropertyConfigurator.java:514)

at org.apache.log4j.PropertyConfigurator.configure(PropertyConfigurator.java:440)

at org.elasticsearch.common.logging.log4j.LogConfigurator.configure(LogConfigurator.java:128)

at org.elasticsearch.bootstrap.Bootstrap.init(Bootstrap.java:243)

at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.java:35)

log4j:ERROR Either File or DatePattern options are not set for appender [file].

log4j:ERROR setFile(null,true) call failed.

java.io.FileNotFoundException: /usr/local/es/elasticsearch-2.3.5/logs/elasticsearch_deprecation.log (Permission denied)