开启远程访问

# 1.默认ES无法使用主机ip进行远程连接,需要开启远程连接权限
- 修改ES安装包中config/elasticsearch.yml配置文件

$ vim elasticsearch.yml

# 2.重新启动ES服务
- ./elasticsearch
- 启动出现如下错误:
	`bootstrap check failure [1] of [4]: max file descriptors [4096] for elasticsearch process is too low, increase to at least [65535]
	`bootstrap check failure [2] of [4]: max number of threads [3802] for user [chenyn] is too low, increase to at least [4096]
	`bootstrap check failure [3] of [4]: max virtual memory areas vm.max_map_count [65530] is too low, increase to at least [262144]
	`bootstrap check failure [4] of [4]: the default discovery settings are unsuitable for production use; at least one of [discovery.seed_hosts, discovery.seed_providers

# 3.解决错误-1

 

$ vim /etc/security/limits.conf

# 在最后面追加下面内容
*               soft    nofile          65536
*               hard    nofile          65536
*               soft    nproc           4096
*               hard    nproc           4096
# 退出重新登录检测配置是否生效:
ulimit -Hn
ulimit -Sn
ulimit -Hu
ulimit -Su

# 3.解决错误-2

#进入limits.d目录下修改配置文件。
$ vim /etc/security/limits.d/20-nproc.conf
# 修改为 
启动ES用户名 soft nproc 4096

# 3.解决错误-3

# 编辑sysctl.conf文件
$ vim /etc/sysctl.conf
vm.max_map_count=655360 #centos7 系统
vm.max_map_count=262144 #ubuntu 系统
# 执行以下命令生效：
$ sysctl -p

# 3.解决错误-4

# 编辑elasticsearch.yml配置文件
$ vim conf/elasticsearch.yml
cluster.initial_master_nodes: ["node-1"]

 

# 4.重启启动ES服务,并通过浏览器访问

{
  "name": "localhost.localdomain",
  "cluster_name": "elasticsearch",
  "cluster_uuid": "OWh3xLYwR-6lZ_fQNhVY3A",
  "version": {
    "number": "7.14.0",
    "build_flavor": "default",
    "build_type": "tar",
    "build_hash": "dd5a0a2acaa2045ff9624f3729fc8a6f40835aa1",
    "build_date": "2021-07-29T20:49:32.864135063Z",
    "build_snapshot": false,
    "lucene_version": "8.9.0",
    "minimum_wire_compatibility_version": "6.8.0",
    "minimum_index_compatibility_version": "6.0.0-beta1"
  },
  "tagline": "You Know, for Search"
}