es配置文件修改

[[email protected] ~]# vim /etc/elasticsearch/jvm.options
# Xms represents the initial size of total heap space
# Xmx represents the maximum size of total heap space
-Xms2g
-Xmx2g

[[email protected] ~]# grep '^[^#]' /etc/elasticsearch/elasticsearch.yml
cluster.name: test-es
node.name: manager
node.attr.rack: r1
path.data: /var/lib/elasticsearch
path.logs: /var/log/elasticsearch
bootstrap.memory_lock: true    #官方文档建议为true
network.host: 192.168.50.65
http.port: 9200
discovery.seed_hosts: ["127.0.0.1"]
cluster.initial_master_nodes: ["manager"]
gateway.recover_after_nodes: 3
action.destructive_requires_name: true

[[email protected] ~]# systemctl edit elasticsearch
[Service]
LimitMEMLOCK=infinity

[[email protected] ~]# systemctl daemon-reload

系统参数修改

[[email protected] ~]# sysctl -p
vm.max_map_count=262144

[[email protected] ~]# cat /etc/security/limits.d/20-nproc.conf
*          soft    nproc     4096
root       soft    nproc     unlimited

[[email protected] ~]# cat /etc/security/limits.conf
* soft nofile 65536
* hard nofile 65536
* soft nproc 2048
* hard nproc 4096

启动ES

[[email protected] ~]# systemctl start elasticsearch.service

[[email protected] ~]# jps  # 专门查看Java程序的ps，比直接用ps去查PID要方便一点
3292 Jps
25756 Elasticsearch

浏览器访问 http://192.168.50.65:9200/
或者curl

[[email protected] ~]# curl http://192.168.50.65:9200/
{
  "name" : "manager",
  "cluster_name" : "test-es",
  "cluster_uuid" : "S8pmWc10SfKXZZxmxbN2Qg",
  "version" : {
    "number" : "7.4.2",
    "build_flavor" : "default",
    "build_type" : "rpm",
    "build_hash" : "2f90bbf7b93631e52bafb59b3b049cb44ec25e96",
    "build_date" : "2019-10-28T20:40:44.881551Z",
    "build_snapshot" : false,
    "lucene_version" : "8.2.0",
    "minimum_wire_compatibility_version" : "6.8.0",
    "minimum_index_compatibility_version" : "6.0.0-beta1"
  },
  "tagline" : "You Know, for Search"
}

基础知识参考
http://www.linuxe.cn/post-295.html
https://www.elastic.co/guide/en/elasticsearch/reference/7.4/heap-size.html

原文地址：https://www.cnblogs.com/max27149/p/11888139.html