Elasticsearch的基础安装

部署ES

1.服务器时间同步(注意：多台的时候字符集跟时间一定要一致)

[root@db01 ~]# yum install -y ntpdate
[root@db01 ~]# ntpdate time1.aliyun.com

2.安装java环境

# 上传
[root@db01 ~]# rz jdk-8u181-linux-x64.rpm

# 安装
[root@db01 ~]# rpm -ivh jdk-8u181-linux-x64.rpm

3.安装ES

1.上传或下载包
[root@db01 ~]# rz elasticsearch-6.6.0.rpm
# 下载地址：https://www.elastic.co/downloads/elasticsearch

2.安装
[root@db01 ~]# rpm -ivh elasticsearch-6.6.0.rpm

3.根据提示继续操作
[root@db01 ~]# systemctl daemon-reload
[root@db01 ~]# systemctl enable elasticsearch.service
Created symlink from /etc/systemd/system/multi-user.target.wants/elasticsearch.service to /usr/lib/systemd/system/elasticsearch.service.
[root@db01 ~]# systemctl start elasticsearch.service

4.验证
[root@db01 ~]# netstat -lntp     
tcp6       0      0 127.0.0.1:9200          :::*                    LISTEN      20040/java
tcp6       0      0 127.0.0.1:9300          :::*                    LISTEN      20040/java

[root@db01 ~]# curl 127.0.0.1:9200
{
  "name" : "FIddisT",
  "cluster_name" : "elasticsearch",
  "cluster_uuid" : "m8Y9neWHRxat7V1tVijMxA",
  "version" : {
    "number" : "6.6.0",
    "build_flavor" : "default",
    "build_type" : "rpm",
    "build_hash" : "a9861f4",
    "build_date" : "2019-01-24T11:27:09.439740Z",
    "build_snapshot" : false,
    "lucene_version" : "7.6.0",
    "minimum_wire_compatibility_version" : "5.6.0",
    "minimum_index_compatibility_version" : "5.0.0"
  },
  "tagline" : "You Know, for Search"
}

4.ES相关配置文件

[root@db01 ~]# rpm -qc elasticsearch
/etc/elasticsearch/elasticsearch.yml				#ES主配置文件
/etc/elasticsearch/jvm.options						#jvm虚拟内存配置
/etc/elasticsearch/log4j2.properties				#日志配置
/etc/elasticsearch/role_mapping.yml					#规则配置
/etc/elasticsearch/roles.yml
/etc/elasticsearch/users
/etc/elasticsearch/users_roles
/etc/init.d/elasticsearch							#启动脚本
/etc/sysconfig/elasticsearch						#系统配置
/usr/lib/sysctl.d/elasticsearch.conf				#参数配置
/usr/lib/systemd/system/elasticsearch.service		#启动程序

5.配置ES

[root@db01 ~]# vim /etc/elasticsearch/elasticsearch.yml
# 集群名称
# cluster.name: my-application

# 节点名称
node.name: node-1
# 指定数据目录
path.data: /service/es/data
# 指定日志目录
path.logs: /service/es/logs
# 开启内存锁
bootstrap.memory_lock: true
# ES监听地址
network.host: 10.0.0.51 127.0.0.1
# ES端口
http.port: 9200

# 集群的地址
# discovery.zen.ping.unicast.hosts: ["host1", "host2"]
# 集群投票切换
# discovery.zen.minimum_master_nodes:

# 总配置
[root@db01 ~]# grep "^[a-z]" /etc/elasticsearch/elasticsearch.yml
node.name: node-1
path.data: /service/es/data
path.logs: /service/es/logs
bootstrap.memory_lock: true
network.host: 10.0.0.51,127.0.0.1
http.port: 9200

6.根据配置文件创建目录

# 创建数据目录和日志目录
[root@db01 ~]# mkdir /service/es/{data,logs} -p

# 授权
[root@db01 ~]# chown -R elasticsearch.elasticsearch /service/es/

7.重启ES

# 重启ES
[root@db01 ~]# systemctl restart elasticsearch.service

####启动失败，查看日志####
[2020-08-10T10:38:56,170][ERROR][o.e.b.Bootstrap          ] [node-1] node validation exception
[1] bootstrap checks failed
[1]: memory locking requested for elasticsearch process but memory is not locked
####说明内存未锁定####

# 配置启动文件中内存锁
[root@db01 ~]# vim /usr/lib/systemd/system/elasticsearch.service
[Service]
... ...
LimitMEMLOCK=infinity

# 再次启动ES
[root@db01 ~]# systemctl daemon-reload
[root@db01 ~]# systemctl start elasticsearch.service

8.验证

# 浏览器访问	http://10.0.0.51:9200/
{
  # 节点名称
  "name" : "node-1",
  # 集群名称
  "cluster_name" : "elasticsearch",
  # 集群的uuid
  "cluster_uuid" : "KCRhZiS2QWSADsuDwwKC9g",
  # 版本信息
  "version" : {
    "number" : "6.6.0",
    "build_flavor" : "default",
    "build_type" : "rpm",
    "build_hash" : "a9861f4",
    "build_date" : "2019-01-24T11:27:09.439740Z",
    "build_snapshot" : false,
    "lucene_version" : "7.6.0",
    "minimum_wire_compatibility_version" : "5.6.0",
    "minimum_index_compatibility_version" : "5.0.0"
  },
  "tagline" : "You Know, for Search"
}