一、下载安装
-
下载
到官网找到对应版本的下载链接，用wget命令下载 下载地址
[root@localhost es]# wget https://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-5.6.8.tar.gz
--2018-12-05 16:29:27-- https://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-5.6.8.tar.gz
正在解析主机 artifacts.elastic.co (artifacts.elastic.co)... 54.225.221.128, 107.21.127.184, 107.21.202.15, ...
正在连接 artifacts.elastic.co (artifacts.elastic.co)|54.225.221.128|:443... 已连接。
已发出 HTTP 请求，正在等待回应... 200 OK
长度：33781024 (32M) [binary/octet-stream]
正在保存至: “elasticsearch-5.6.8.tar.gz”
100%[=================================================================>] 33,781,024 1.14MB/s 用时 30s
2018-12-05 16:29:59 (1.06 MB/s) - 已保存 “elasticsearch-5.6.8.tar.gz” [33781024/33781024])
- 解压
[root@localhost es]# tar -zxf elasticsearch-5.6.8.tar.gz
-
建立软链接
习惯建一个目录管理所有应用的软件界（为了个人方便而已）
[root@localhost /]# ln -s /develop/es/elasticsearch-5.6.8/ /shortcut/es
[root@localhost /]# cd shortcut/
[root@localhost shortcut]# ll
总用量 0
lrwxrwxrwx. 1 root root 32 12月 5 16:56 es -> /develop/es/elasticsearch-5.6.8/
-
新建用户
es 5以上都不允许用root用户启动，如果用root启动会出现以下错误：can not run elasticsearch as root
[root@localhost elasticsearch-5.6.8]# bin/elasticsearch
[2018-12-05T16:40:00,801][WARN ][o.e.b.ElasticsearchUncaughtExceptionHandler] [] 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:136) ~[elasticsearch-5.6.8.jar:5.6.8]
at org.elasticsearch.bootstrap.Elasticsearch.execute(Elasticsearch.java:123) ~[elasticsearch-5.6.8.jar:5.6.8]
at org.elasticsearch.cli.EnvironmentAwareCommand.execute(EnvironmentAwareCommand.java:70) ~[elasticsearch-5.6.8.jar:5.6.8]
at org.elasticsearch.cli.Command.mainWithoutErrorHandling(Command.java:134) ~[elasticsearch-5.6.8.jar:5.6.8]
...
新建一个叫es用户,并为es设置密码
[root@localhost es]# useradd es
[root@localhost es]# passwd es
给es账号赋权
[root@localhost es]# chown -R es /develop/es/elasticsearch-5.6.8
- 启动es
[es@localhost es]$bin/elasticsearch
[2018-12-06T11:29:07,535][INFO ][o.e.n.Node ] [] initializing ...
[2018-12-06T11:29:17,825][INFO ][o.e.h.n.Netty4HttpServerTransport] [5nNJgP4]
publish_address {127.0.0.1:9200}, bound_addresses {[::1]:9200}, {127.0.0.1:9200}
[2018-12-06T11:29:17,825][INFO ][o.e.n.Node ] [5nNJgP4] started
这样子变启动成功了。 可以访问对应的127.0.0.1:9200 看到以下结果：
[root@localhost ~]# curl 127.0.0.1:9200
{
"name" : "5nNJgP4",
"cluster_name" : "elasticsearch",
"cluster_uuid" : "aek3sfxyRjeMfvgrK-jB0Q",
"version" : {
"number" : "5.6.8",
"build_hash" : "688ecce",
"build_date" : "2018-02-16T16:46:30.010Z",
"build_snapshot" : false,
"lucene_version" : "6.6.1"
},
"tagline" : "You Know, for Search"
}
这时候es就算安装成功了。
-
设置为可被外部访问的ip
这时候并不能用ip访问es，如下图
[root@localhost es]# curl 192.168.24.152::9200
curl: (6) Could not resolve host: 192.168.24.152:; 未知的名称或服务
所以需要修改对应配置文件信息
- 修改elasticsearch.yml,设置host 跟port
[root@localhost ~]# vim /develop/es/elasticsearch-5.6.8/config/elasticsearch.yml
# ---------------------------------- Network -----------------------------------
#
# Set the bind address to a specific IP (IPv4 or IPv6):
#
network.host: 0.0.0.0
#
# Set a custom port for HTTP:
#
http.port: 9200
#
# For more information, consult the network module documentation.
#
- 这时候启动会遇到下面问题
[2018-12-06T14:01:48,138][INFO ][o.e.b.BootstrapChecks ] [5nNJgP4] bound or publishing to a
non-loopback address, enforcing bootstrap checks
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]
[1]max file descriptors [4096] for elasticsearch process is too low, increase to at least [65536]
原因：无法创建本地文件问题,用户最大可创建文件数太小
解决方案：
切换到root用户，编辑limits.conf配置文件， 添加类似如下内容：
vim /etc/security/limits.conf
添加如下内容:
* hard nofile 65536
* soft nofile 65536
备注： * 代表Linux所有用户名称（比如 es）保存、退出、重新登录才可生效
[2]: max virtual memory areas vm.max_map_count [65530] is too low, increase to at least [262144]
原因：最大虚拟内存太小
解决方案：切换到root用户下，修改配置文件sysctl.conf
vim /etc/sysctl.conf
添加下面配置
vm.max_map_count=655360
并执行
[root@localhost ~]# sysctl -p
vm.max_map_count = 655360
注意:这时候还不能访问需要关闭防火墙或者开放9200端口
centos7防火墙设置
- 问题解决
[root@localhost es]# curl 192.168.24.152:9200
{
"name" : "5nNJgP4",
"cluster_name" : "elasticsearch",
"cluster_uuid" : "aek3sfxyRjeMfvgrK-jB0Q",
"version" : {
"number" : "5.6.8",
"build_hash" : "688ecce",
"build_date" : "2018-02-16T16:46:30.010Z",
"build_snapshot" : false,
"lucene_version" : "6.6.1"
},
"tagline" : "You Know, for Search"
}
