Elasticsearch实践(二)linux安装

Bertha 。 2022-04-11 10:30 183阅读 0赞

首先确保环境安装了Java8

**1,下载安装包**

在ElasticSearch官网根据操作系统，选择需要安装的安装包，以及版本。

[https://www.elastic.co/downloads/elasticsearch][https_www.elastic.co_downloads_elasticsearch]

下载linux安装包

[root@yun10514 src] wget https://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-6.5.1.tar.gz

2，解压安装包

[root@yun10514 src]# tar -zxvf elasticsearch-6.5.1.tar.gz
    [root@yun10514 src]# ls
    elasticsearch-6.5.1  elasticsearch-6.5.1.tar.gz

3，启动ElasticSearch

[root@yun10514 src]# cd elasticsearch-6.5.1
    [root@yun10514 elasticsearch-6.5.1]# ./bin/elasticsearch

启动报错如下，提示不能使用root用户启动elasticsearch

org.elasticsearch.bootstrap.StartupException: java.lang.RuntimeException: can not run elasticsearch as root
    	at org.elasticsearch.bootstrap.Elasticsearch.init(Elasticsearch.java:140) ~[elasticsearch-6.5.1.jar:6.5.1]
    	at org.elasticsearch.bootstrap.Elasticsearch.execute(Elasticsearch.java:127) ~[elasticsearch-6.5.1.jar:6.5.1]
    	at org.elasticsearch.cli.EnvironmentAwareCommand.execute(EnvironmentAwareCommand.java:86) ~[elasticsearch-6.5.1.jar:6.5.1]
    	at org.elasticsearch.cli.Command.mainWithoutErrorHandling(Command.java:124) ~[elasticsearch-cli-6.5.1.jar:6.5.1]
    	at org.elasticsearch.cli.Command.main(Command.java:90) ~[elasticsearch-cli-6.5.1.jar:6.5.1]
    	at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.java:93) ~[elasticsearch-6.5.1.jar:6.5.1]
    	at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.java:86) ~[elasticsearch-6.5.1.jar:6.5.1]
    Caused by: java.lang.RuntimeException: can not run elasticsearch as root
    	at org.elasticsearch.bootstrap.Bootstrap.initializeNatives(Bootstrap.java:103) ~[elasticsearch-6.5.1.jar:6.5.1]
    	at org.elasticsearch.bootstrap.Bootstrap.setup(Bootstrap.java:170) ~[elasticsearch-6.5.1.jar:6.5.1]
    	at org.elasticsearch.bootstrap.Bootstrap.init(Bootstrap.java:333) ~[elasticsearch-6.5.1.jar:6.5.1]
    	at org.elasticsearch.bootstrap.Elasticsearch.init(Elasticsearch.java:136) ~[elasticsearch-6.5.1.jar:6.5.1]
    ... 6 more

添加其他用户启动elasticsearch，并修改文件夹权限

[root@yun10514 src]# groupadd elasticsearch
    [root@yun10514 src]# useradd elasticsearch -g elasticsearch -pelasticsearch
    [root@yun10514 src]# chown -R elasticsearch-6.5.1 elasticsearch

切换到elasticsearch用户下，重新启动

[root@yun10514 src]# cd elasticsearch-6.5.1
    [root@yun10514 elasticsearch-6.5.1]# su elasticsearch
    [elasticsearch@yun10514 elasticsearch-6.5.1]$ ./bin/elasticsearch

报错

ERROR: [2] bootstrap checks failed
    [1]: max file descriptors [4096] for elasticsearch process is too low, increase to at least [65536]
    [2]: max virtual memory areas vm.max_map_count [65530] is too low, increase to at least [262144]

切换到root用户下修改配置

修改配置1

[root@yun10514 elasticsearch-6.5.1]# sysctl -w vm.max_map_count=262144
    [root@yun10514 elasticsearch-6.5.1]# vim /etc/sysctl.conf

后面增加

vm.max_map_count=262144

修改配置2

[root@yun10514 elasticsearch-6.5.1]# vim /etc/security/limits.conf

后面增加下面两行，xxx代表启动elasticsearch的用户

xxx hard nofile 65536
    xxx soft nofile 65536

切换到elasticsearch用户，重新启动

[root@yun10514 elasticsearch-6.5.1]# su elasticsearch
    [elasticsearch@yun10514 elasticsearch-6.5.1]$ ./bin/elasticsearch

检查是否安装成功

[elasticsearch@lyun10514 elasticsearch-6.5.1]$ curl http://localhost:9200/
    {
      "name" : "8h_m9Uy",
      "cluster_name" : "elasticsearch",
      "cluster_uuid" : "tAXRn5TrQru7_-noAGtSXg",
      "version" : {
        "number" : "6.5.1",
        "build_flavor" : "default",
        "build_type" : "tar",
        "build_hash" : "8c58350",
        "build_date" : "2018-11-16T02:22:42.182257Z",
        "build_snapshot" : false,
        "lucene_version" : "7.5.0",
        "minimum_wire_compatibility_version" : "5.6.0",
        "minimum_index_compatibility_version" : "5.0.0"
      },
      "tagline" : "You Know, for Search"
    }

安装成功。

在外网访问不了，编辑安装目录下的config/elasticsearch.yml文件，绑定本地IP

#
    # Set the bind address to a specific IP (IPv4 or IPv6):
    #
    network.host: 192.168.105.10

重新启动elasticsearch，即可以在外网访问。

(^\_^)

[https_www.elastic.co_downloads_elasticsearch]: https://www.elastic.co/downloads/elasticsearch