ES安裝、注意點（Elasticsearch 7.3.2）

ES安裝、注意點（Elasticsearch 7.3.2）

時間：2019年10月22日
系統：CentOS 7.2

JDK安裝

1.8

下載安裝包

網頁地址：https://www.elastic.co/cn/downloads/elasticsearch
下載地址：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. 官方地址下載比較慢

使用elastic用戶管理

#創建用戶
useradd elsearch
#目錄授權
chown -R elsearch:elsearch /usr/local/es
#切換用戶
su elsearch

配置

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

#支持遠程訪問
network.host: 192.168.1.92

#配置需要發現的初始節點列表
discovery.seed_hosts: ["192.168.1.92"]

#設置節點名稱
node.name: master

#設置主節點列表
cluster.initial_master_nodes: ["master"]

啓動和停止

cd /usr/local/es/elasticsearch-7.3.2
#啓動
./bin/elasticsearch
#守護進程啓動
./bin/elasticsearch -d

#其他啓動方式【未驗證】
./bin/elasticsearch -Xms512m -Xmx512m
#停止集羣【未驗證】
curl -X POST http://主機IP:9200/_cluster/nodes/節點標識符（如es-node1）/_shutdown

#檢查服務是否啓動
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"
}

注意點

1. 系統條件不滿足

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

#切換到root用戶修改配置sysctl.conf
vim /etc/sysctl.conf

#添加配置
vm.max_map_count=262144

#應用
sysctl -p

2. 添加配置network.host: 192.168.1.92後啓動報錯

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】：需要至少配置一項[discovery.seed_hosts, discovery.seed_providers,cluster.initial_master_nodes]

【解決方案】添加配置：discovery.seed_hosts: ["192.168.1.92"]

3. 待續

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