ES安装、注意点（Elasticsearch 7.3.2）

ES安装、注意点（Elasticsearch 7.3.2）

时间：2019年10月22日
系统：CentOS 7.2

JDK安装

1.8

下载安装包

网页地址：https://www.elastic.co/cn/downloads/elasticsearch
下载地址：https://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-7.3.2-linux-x86_64.tar.gz

cd /usr/local/es

wget https://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-7.3.2-linux-x86_64.tar.gz

tar -zxvf elasticsearch-7.3.2-linux-x86_64.tar.gz

TIPS：
1. 官方地址下载比较慢

使用elastic用户管理

#建立用户
useradd elsearch
#目录受权
chown -R elsearch:elsearch /usr/local/es
#切换用户
su elsearch

配置

cd /usr/local/es/elasticsearch-7.3.2
vim config/elasticsearch.yml

#支持远程访问
network.host: 192.168.1.92

#配置须要发现的初始节点列表
discovery.seed_hosts: ["192.168.1.92"]

#设置节点名称
node.name: master

#设置主节点列表
cluster.initial_master_nodes: ["master"]

启动和中止

cd /usr/local/es/elasticsearch-7.3.2
#启动
./bin/elasticsearch
#守护进程启动
./bin/elasticsearch -d

#其余启动方式【未验证】
./bin/elasticsearch -Xms512m -Xmx512m
#中止集群【未验证】
curl -X POST http://主机IP:9200/_cluster/nodes/节点标识符（如es-node1）/_shutdown

#检查服务是否启动
curl http://127.0.0.1:9200
curl http://192.168.1.92:9200

{
  "name" : "da3f6f7a9b00",
  "cluster_name" : "elasticsearch",
  "cluster_uuid" : "o_KisXPYS26kfhcLhaPldg",
  "version" : {
    "number" : "7.3.2",
    "build_flavor" : "default",
    "build_type" : "tar",
    "build_hash" : "1c1faf1",
    "build_date" : "2019-09-06T14:40:30.409026Z",
    "build_snapshot" : false,
    "lucene_version" : "8.1.0",
    "minimum_wire_compatibility_version" : "6.8.0",
    "minimum_index_compatibility_version" : "6.0.0-beta1"
  },
  "tagline" : "You Know, for Search"
}

注意点

1. 系统条件不知足

ERROR: [1] bootstrap checks failed
[1]: max virtual memory areas vm.max_map_count [65530] is too low, increase to at least [262144]

#切换到root用户修改配置sysctl.conf
vim /etc/sysctl.conf

#添加配置
vm.max_map_count=262144

#应用
sysctl -p

1. 添加配置network.host: 192.168.1.92后启动报错

ERROR: [1] bootstrap checks failed
[1]: the default discovery settings are unsuitable for production use; at least one of [discovery.seed_hosts, discovery.seed_providers,cluster.initial_master_nodes] must be configured

【分析】：须要至少配置一项[discovery.seed_hosts, discovery.seed_providers,cluster.initial_master_nodes]

【解决方案】添加配置：discovery.seed_hosts: ["192.168.1.92"]

1. 待续

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