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配置Elasticsearh 出现相关问题汇总

配置Elasticsearh 出现相关问题汇总

作者: WebGis学习笔记 | 来源:发表于2019-03-01 13:13 被阅读60次

    配置JDK1.8

    使用wget 下载elasticsearch安装包
    wget https://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-5.6.8.tar.gz

    解压
    tar -zxvf elasticsearch-5.6.8.tar.gz
    官网:https://www.elastic.co/products/elasticsearch

    外网访问配置:
    config目录下面elasticsearch.yml
    修改为 network.host: 0.0.0.0

    1、问题一

    Java HotSpot(TM) 64-Bit Server VM warning: INFO: os::commit_memory(0x00000000c5330000, 986513408, 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 986513408 bytes for committing reserved memory.
        # An error report file with more information is saved as:
        # /usr/local/software/temp/elasticsearch-6.2.2/hs_err_pid1912.log
    

    解决1:内存不够,购买阿里云的机器可以动态增加内存

    解决2:内存不够,修改JVM内存 修改配置文件:/config/jvm.options将内存从2G调整为128M。

    #-Xms2G
    #-Xmx2G
    
    -Xms128M
    -Xmx128M
    
    

    2、问题二

    [root@iZwz95j86y235aroi85ht0Z bin]# ./elasticsearch
    [2018-02-22T20:14:04,870][WARN ][o.e.b.ElasticsearchUncaughtExceptionHandler] [] uncaught exception in thread [main]
      org.elasticsearch.bootstrap.StartupException: java.lang.RuntimeException: can not run elasticsearch as root
      at org.elasticsearch.bootstrap.Elasticsearch.init(Elasticsearch.java:125) ~[elasticsearch-6.2.2.jar:6.2.2]
      at org.elasticsearch.bootstrap.Elasticsearch.execute(Elasticsearch.java:112) ~[elasticsearch-6.2.2.jar:6.2.2]
    atorg.elasticsearch.cli.EnvironmentAwareCommand.execute(EnvironmentAwareCommand.java:86) ~[elasticsearch-6.2.2.jar:6.2.2]
      at org.elasticsearch.cli.Command.mainWithoutErrorHandling(Command.java:124) ~[elasticsearch-cli-6.2.2.jar:6.2.2]
    

    解决:用非root用户

    添加用户:useradd -m 用户名 然后设置密码 passwd 用户名

    3、问题三

    ./elasticsearch
    Exception in thread "main" java.nio.file.AccessDeniedException: /usr/local/software/temp/elasticsearch-6.2.2/config/jvm.options
    

    解决:权限不够 chmod 777 -R 当前es目录

    SpringBoot 整合 Elasticsearch:https://github.com/i-Javan/springboot/tree/master/movebrick-elasticsearch

    SpringBoot 整合 Dubbo + Zookeeper :https://github.com/i-Javan/springboot
    SpringBoot 整合 Reids :https://github.com/i-Javan/springboot/tree/master/movebrick-mybatis-annotation
    SpringBoot 整合 Mybatis :https://github.com/i-Javan/springboot/tree/master/movebrick-mybatis
    SpringBoot 整合 MybatisPlus :https://github.com/i-Javan/springboot/tree/master/movebrick-mybatisPlus
    SpringBoot 整合 MybatisAnnotation :https://github.com/i-Javan/springboot/tree/master/movebrick-mybatis-annotation
    SpringBoot 整合 ActiveMQ:https://github.com/i-Javan/springboot/tree/master/movebrick-activeMQ

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