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在CentOS7上安裝Elasticsearch7.3

2020-01-14 15:52:48

標籤: CentOS, Elasticsearch, CentOS7, Elasticsearch7.3, 安裝Elasticsearch,Elasticsearch官方

編輯/etc/yum.repos.d/elasticsearch.repo文件,內容如下:

[elasticsearch-7.x]
name=Elasticsearch repository for 7.x packages
baseurl=https://artifacts.elastic.co/packages/7.x/yum
gpgcheck=1
gpgkey=https://artifacts.elastic.co/GPG-KEY-elasticsearch
enabled=1
autorefresh=1
type=rpm-md

YUM安裝後設置開機運行,並啟動服務

yum -y install elasticsearch

systemctl daemon-reload
systemctl enable elasticsearch
systemctl start elasticsearch

修改配置文件/etc/elasticsearch/elasticsearch.yml

在#secruity行下方加入啟用授權的配置,保存後退出
network.host: 192.168.0.10

http.port: 9200

cluster.initial_master_nodes: ["node-1"]

重啟elasticsearch,此時就可以用客戶端進行遠程連接了。

[root@localhost ~]# systemctl restart elasticsearch

[root@localhost ~]# curl 192.168.0.10:9200
{
  "name" : "carbon",
  "cluster_name" : "elasticsearch",
  "cluster_uuid" : "RmfeiseHQ8C5S9eF7gG6aQ",
  "version" : {
    "number" : "7.3.0",
    "build_flavor" : "default",
    "build_type" : "rpm",
    "build_hash" : "de777fa",
    "build_date" : "2019-07-24T18:30:11.767338Z",
    "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"
}
[root@carbon ~]#

問題:設置好授權驗證後,也建立了用戶和密碼,但客戶端無法連接。

解決:停止防火牆
systemctl stop firewalld
systemctl stop iptables

問題:訪問ElasticSearch時提示:Elasticsearch cluster 'master_not_discovered_exception'

解決:這個問題在CentOS8中安裝Elasticsearch7.5遇到的,原因是節點無法相互發現,如果只有一個節點,則可以修改配置文件,設置節點名稱為node-1。

推薦設置字段緩存的大小為實際內存的50%。
vim /etc/elasticsearch/elasticsearch.yml

node.name: node-1

indices.fielddata.cache.size: 2gb

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