【安装手册】在CentOS搭建Elasticsearch集群

一、集群搭建

3台虚拟机：192.168.59.191、192.168.59.192、192.168.59.193

二、找下载链接

https://www.elastic.co/cn/downloads/past-releases/elasticsearch-5-6-12

三、下载文件

1、下载，解压缩

yum install -y wget
mkdir /apps
cd /apps/
wget https://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-5.6.12.tar.gz

网络不通，未知原因，重启了一下网络：
systemctl restart network

tar -zxvf elasticsearch-5.6.12.tar.gz

2、修改配置

cd elasticsearch-5.6.12
mkdir logs
mkdir data

cd config
vim elasticsearch.yml
修改
cluster.name: my-es
node.name: centos_3
path.data: /apps/elasticsearch-5.6.12/data
path.logs: /apps/elasticsearch-5.6.12/logs
network.host: 192.168.59.193
discovery.zen.ping.unicast.hosts: [“192.168.59.191:9300”, “192.168.59.192:9300”, “192.168.59.193:9300”]

其中默认
http.port: 9200
transport.tcp.port: 9300

3、新增用户

cd …/
bin/elasticsearch
报错 can not run elasticsearch as root

useradd elasticsearch
chown -R elasticsearch:elasticsearch elasticsearch-5.6.12

su - elasticsearch
cd /apps/elasticsearch-5.6.12
bin/elasticsearch

4、如果有报如下错误

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]

可参考：https://blog.csdn.net/henryitgd/article/details/132957581

四、启动成功