Elasticsearch單機的安裝配合非常簡單,以下是相關步驟操作:
網站各版本下載地址:https://www.elastic.co/cn/downloads/elasticsearch
1、下載:
[root@txvm2019 ~]# wget https://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-7.2.0-linux-x86_64.tar.gz
(如果網絡不好下載非常慢的話)可以使用進行後臺下載:
[root@txvm2019 ~]# wget -b https://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-7.2.0-linux-x86_64.tar.gz
2、解壓
[root@txvm2019 ~]# tar -zxvf elasticsearch-7.2.0-linux-x86_64.tar.gz
3、創建專用的用戶名密碼
(由於elasticsearch不能用root用戶啓動,因此創建一個專門用來操作的用戶)
創建用戶:elasticsearch及授權
[root@txvm2019 ~]# adduser elasticsearch
[root@txvm2019 ~]# passwd elasticsearch
elasticsearch
[root@txvm2019 ~]# chown -R elasticsearch elasticsearch-7.2.0
4、相關配置
切換用戶,然後修改config目錄下配置文件
[root@txvm2019 ~]# su elasticsearch
[elasticsearch@txvm2019 config]$ vi elasticsearch.yml
修改以下配置,將參數註釋#去掉,network.host設置爲0.0.0.0是爲了讓所有IP都可以訪問,具體可以根據自己需要配置,
node.name: node-1
network.host: 0.0.0.0
http.port: 9200
cluster.initial_master_nodes: ["node-1"]
5、啓動測試
進入/bin目錄下,
[elasticsearch@txvm2019 bin]$ ./elasticsearch
或者使用-d參數使用後臺方式啓動:
[elasticsearch@txvm2019 bin]$ ./elasticsearch -d
我們還可以通過訪問 Elasticsearch 9200端口來實際驗證一下:
[root@txvm2019 ~]# curl localhost:9200
{
"name" : "txvm2019",
"cluster_name" : "elasticsearch",
"cluster_uuid" : "TCnayY3BRVOLN-37FOhbXQ",
"version" : {
"number" : "7.2.0",
"build_flavor" : "default",
"build_type" : "tar",
"build_hash" : "508c38a",
"build_date" : "2019-06-20T15:54:18.811730Z",
"build_snapshot" : false,
"lucene_version" : "8.0.0",
"minimum_wire_compatibility_version" : "6.8.0",
"minimum_index_compatibility_version" : "6.0.0-beta1"
},
"tagline" : "You Know, for Search"
}
也可以通過瀏覽器訪問,http://ip:9200/
可以看到相關信息,說明elasticsearch啓動成功了!
6、相關簡單命令
1)查找ES進程
ps -ef | grep elasticsearch
2)停止:殺掉ES進程
kill -9 13651(進程號)
3)重啓ES
sh elasticsearch -d
7、常見錯誤
[root@txvm2019 bin]# sh elasticsearch
future versions of Elasticsearch will require Java 11; your Java version from [/home/svr/software/jdk/jdk8/jre] does not meet this requirement
[2020-04-03T19:11:15,866][WARN ][o.e.b.ElasticsearchUncaughtExceptionHandler] [txvm2019] uncaught exception in thread [main]
org.elasticsearch.bootstrap.StartupException: java.lang.RuntimeException: can not run elasticsearch as root
at org.elasticsearch.bootstrap.Elasticsearch.init(Elasticsearch.java:163) ~[elasticsearch-7.2.0.jar:7.2.0]
at org.elasticsearch.bootstrap.Elasticsearch.execute(Elasticsearch.java:150) ~[elasticsearch-7.2.0.jar:7.2.0]
at org.elasticsearch.cli.EnvironmentAwareCommand.execute(EnvironmentAwareCommand.java:86) ~[elasticsearch-7.2.0.jar:7.2.0]
at org.elasticsearch.cli.Command.mainWithoutErrorHandling(Command.java:124) ~[elasticsearch-cli-7.2.0.jar:7.2.0]
at org.elasticsearch.cli.Command.main(Command.java:90) ~[elasticsearch-cli-7.2.0.jar:7.2.0]
at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.java:115) ~[elasticsearch-7.2.0.jar:7.2.0]
at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.java:92) ~[elasticsearch-7.2.0.jar:7.2.0]
Caused by: java.lang.RuntimeException: can not run elasticsearch as root
at org.elasticsearch.bootstrap.Bootstrap.initializeNatives(Bootstrap.java:105) ~[elasticsearch-7.2.0.jar:7.2.0]
at org.elasticsearch.bootstrap.Bootstrap.setup(Bootstrap.java:172) ~[elasticsearch-7.2.0.jar:7.2.0]
at org.elasticsearch.bootstrap.Bootstrap.init(Bootstrap.java:349) ~[elasticsearch-7.2.0.jar:7.2.0]
at org.elasticsearch.bootstrap.Elasticsearch.init(Elasticsearch.java:159) ~[elasticsearch-7.2.0.jar:7.2.0]
... 6 more
這個錯誤是由於ES不能用root用戶去操作,執行3)中創建一個用戶設置權限即可.