docker下的elasticsearch6.5.4搭建

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本文详细介绍了如何在Docker环境下搭建Elasticsearch 6.5.4，包括镜像搜索与下载、容器创建与配置、解决root用户运行问题、安装elasticsearch-head插件及配置修改，最后通过新镜像创建容器并启动服务。

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docker下的elasticsearch6.5.4环境搭建

一：elasticsearch安装配置

1.1：搜索elasticsearch镜像，并下载

~ docker search elasticsearch
NAME                                  DESCRIPTION                                     STARS               OFFICIAL            AUTOMATED
elasticsearch                         Elasticsearch is a powerful open source sear…   3441                [OK]
kibana                                Kibana gives shape to any kind of data — str…   1396                [OK]
nshou/elasticsearch-kibana            Elasticsearch-6.5.4 Kibana-6.5.4                94                                      [OK]
itzg/elasticsearch                    Provides an easily configurable Elasticsearc…   67                                      [OK]
elastichq/elasticsearch-hq            Official Docker image for ElasticHQ: Elastic…   25                                      [OK]
kubernetes/fluentd-elasticsearch      An image that ingests Docker container log f…   25
lmenezes/elasticsearch-kopf           elasticsearch kopf                              17                                      [OK]
bitnami/elasticsearch                 Bitnami Docker Image for Elasticsearch          15                                      [OK]
esystemstech/elasticsearch            Debian based Elasticsearch packing for Lifer…   14
taskrabbit/elasticsearch-dump         Import and export tools for elasticsearch       13                                      [OK]
monsantoco/elasticsearch              ElasticSearch Docker image                      11                                      [OK]
mesoscloud/elasticsearch              [UNMAINTAINED] Elasticsearch                    9                                       [OK]
justwatch/elasticsearch_exporter      Elasticsearch stats exporter for Prometheus     8
blacktop/elasticsearch                Alpine Linux based Elasticsearch Docker Image   8                                       [OK]
centerforopenscience/elasticsearch    Elasticsearch                                   4                                       [OK]
barchart/elasticsearch-aws            Elasticsearch AWS node                          2
phenompeople/elasticsearch            Elasticsearch is a powerful open source sear…   1                                       [OK]
thingswise/elasticsearch              Elasticsearch + etcd2 peer discovery            1                                       [OK]
forkdelta/fluentd-elasticsearch       fluent/fluentd with fluent-plugin-elasticsea…   1                                       [OK]
jetstack/elasticsearch-pet            An elasticsearch image for kubernetes PetSets   1                                       [OK]
18fgsa/elasticsearch                  Built from https://github.com/docker-library…   0
driveclutch/infra-elasticsearch-aws   Elasticsearch Docker for use in AWS             0                                       [OK]
wreulicke/elasticsearch               elasticsearch                                   0                                       [OK]
igneoussystems/base-elasticsearch-5   Base elasticsearch 5.1.1 container              0
igneoussystems/base-elasticsearch     A base image containing 3p tools for elastic…   0
~
~ docker pull elasticsearch
~ docker images 
REPOSITORY          TAG                 IMAGE ID            CREATED             SIZE
elasticsearch       6.5.4               93109ce1d590        1 weeks ago         774MB

1.2：创建elasticsearch容器

~ docker run -it -p 9002:9200 -p 9003:9300 --name es6 elasticsearch:6.5.4 /bin/bash

查看 elasticsearch服务是否已启动

~ ps -ef|grep elasticsearch

如果服务器未启动，则启动服务

~ cd /usr/share/elasticsearch/bin/
~ ./elasticsearch &
...
Caused by: java.lang.RuntimeException: can not run elasticsearch as root
	at org.elasticsearch.bootstrap.Bootstrap.initializeNatives(Bootstrap.java:103) ~[elasticsearch-6.5.4.jar:6.5.4]
	at org.elasticsearch.bootstrap.Bootstrap.setup(Bootstrap.java:170) ~[elasticsearch-6.5.4.jar:6.5.4]
	at org.elasticsearch.bootstrap.Bootstrap.init(Bootstrap.java:333) ~[elasticsearch-6.5.4.jar:6.5.4]
	at org.elasticsearch.bootstrap.Elasticsearch.init(Elasticsearch.java:136) ~[elasticsearch-6.5.4.jar:6.5.4]

如果启动时，提示以上错误"can not run elasticsearch as root"，是因为安全问题elasticsearch 不让用root用户直接运行，所以要创建新用户。
创建elasticsearch用户，切换到elasticsearch用户，重启elasticsearch服务：

~ useradd elasticsearch
~ su elasticsearch
~ ./elasticsearch &

二：安装elasticsearch-head插件

2.1：安装git

~ yum install git
~ git --version

2.2：安装node（head插件的启动使用grunt）

~ npm install -g grunt-cli  #安装grunt命令行工具grunt-cli
~ npm install grunt --save-dev  #安装grunt及其插件
~ grunt -version   #查看安装版本情况

2.3：下载并安装elasticsearch-head

~ cd /usr/local/
~ git clone git://github.com/mobz/elasticsearch-head.git   #git下载
~ cd elasticsearch-head  #进入目录
~ npm install  # 如果npm使用很多错误，尝试使用cnpm
~ npm install grunt --save  #安装grunt到模块中并保存

2.4：修改elasticsearch配置

修改elasticsearch 安装目录下的config/elasticsearch.yml

~ vi /usr/share/elasticsearch/config/elasticsearch.yml
# 增加如下两行配置
http.cors.enabled: true
http.cors.allow-origin: "*"

三：通过新镜像，创建新容器

3.1：将上一步的容器commit为镜像

~ docker commit es6 es6.5.4:latest

3.2：创建新容器，启动elasticsearch、elasticsearch-head服务

~ docker run -it -p 9002:9200 -p 9003:9300 -p 9001:9100 --name my_es6.5.4 es6.5.4:latest /bin/bash
~ /usr/share/elasticsearch/bin/elasticsearch &
~ cd /usr/local/elasticsearch-head/
~ grunt server &