前言

• TencentOS Server 3.1
• Docker version 19.03.14, build 5eb3275d40
• elasticsearch: 7.4.0

安装ElasticSearch/ES

安装步骤1：准备

1. 安装docker

安装 docker 参考：【Centos 8】【Centos 7】安装 docker

2. 搜索可以使用的镜像。

```
shell> docker search elasticsearch
NAME                                     DESCRIPTION                                     STARS     OFFICIAL   AUTOMATED
elasticsearch                            Elasticsearch is a powerful open source sear…   6115      [OK]       
kibana                                   Kibana gives shape to any kind of data — str…   2622      [OK]       
     
```

3. 也可从docker hub上搜索镜像。

docker hub，docker hub-stage。

4. 选择合适的redis镜像。

版本	拉取命令
最新版本	docker pull elasticsearch:latest
7.4.0	docker pull elasticsearch:7.4.0
7.12.0	docker pull elasticsearch:7.12.0
8.0.0	docker pull elasticsearch:8.0.0
8.9.0	docker pull docker.elastic.co/elasticsearch/elasticsearch:8.9.0

安装步骤2：拉取ElasticSearch镜像

1 拉取镜像

shell> docker pull elasticsearch:7.4.0

2 查看已拉取的镜像

shell> docker images
REPOSITORY                                      TAG       IMAGE ID       CREATED         SIZE

elasticsearch                                   7.4.0     dd156dd42341   3 years ago     859MB
mobz/elasticsearch-head                         5         b19a5c98e43b   6 years ago     824MB

安装步骤3：创建容器

创建容器方式1：快速创建容器

shell> docker create -e "discovery.type=single-node" -p 9200:9200  -p 9300:9300 \
-e ES_JAVA_OPTS="-Xms1g -Xmx1g" \
--name elasticsearch1 elasticsearch:7.4.0

安装步骤4：运行容器

shell> docker start elasticsearch1

安装步骤5：检查是否安装成功

浏览器访问http://localhost:9200, 如果出现以下界面就是安装成功：

ElasticSearch 配置

工作目录/WorkingDir

"WorkingDir": "/usr/share/elasticsearch" 

设置跨域请求

shell> docker exec -it elasticsearch1 /bin/bash
shell> vi /usr/share/elasticsearch/config/elasticsearch.yml

增加如下配置：

http.cors:
  enabled: true
  allow-origin: "*"

设置 JVM 内存参数

shell> docker exec -it elasticsearch1 /bin/bash
shell> vi /usr/share/elasticsearch/config/jvm.options

修改如下配置：

################################################################
## IMPORTANT: JVM heap size
################################################################
##
## The heap size is automatically configured by Elasticsearch
## based on the available memory in your system and the roles
## each node is configured to fulfill. If specifying heap is
## required, it should be done through a file in jvm.options.d,
## which should be named with .options suffix, and the min and
## max should be set to the same value. For example, to set the
## heap to 4 GB, create a new file in the jvm.options.d
## directory containing these lines:
##
## -Xms4g
## -Xmx4g
##
## See https://www.elastic.co/guide/en/elasticsearch/reference/8.9/heap-size.html
## for more information
##
################################################################
-Xms1g
-Xmx1g

容器设置

容器随 docker 自动启动

设置容器的重启策略

shell> docker update --restart=always elasticsearch1

• 每次docker启动时，容器也会自动启动

容器设置IP

向网络中添加容器

shell> docker network connect --ip 172.19.0.2  mynetwork elasticsearch1 

• docket ip : 172.19.0.2

安装elasticsearch-head

Docker安装 elasticsearch-head

其它

略

参考

https://blog.csdn.net/qq_40942490/article/details/111594267
https://www.cnblogs.com/jianxuanbing/p/9410800.html
https://blog.csdn.net/teyue87/article/details/122626499
https://blog.csdn.net/qq_44732146/article/details/120744829
https://gitee.com/mirrors/elasticsearch
https://github.com/mobz/elasticsearch-head