ES elasticsearch 7.10 installation and deployment

Download and install

Latest version address

#进入安装目录
cd /opt

#下载安装包，300多M
wget https://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-7.10.1-linux-x86_64.tar.gz

# 解压
tar -zxvf elasticsearch-7.10.1-linux-x86_64.tar.gz

# 进入es根目录
cd elasticsearch-7.10.1

 

Configuration

• Modify the configuration file

vim config/elasticsearch.yml

#集群名词
cluster.name: lizz-application
# 本节点名词
node.name: node-1
# 服务ip，0表示所有本地ip
network.host: 0.0.0.0
# 服务端口号
http.port: 9200 
# es节点列表，集群时配置多个，数组
discovery.seed_hosts: ["127.0.0.1"]
# es启动时，参数选主的node列表，集群时配置多个
cluster.initial_master_nodes: ["node-1"]

start up

• Start es 

bin/elasticsearch

#启动失败异常
java.lang.RuntimeException: can not run elasticsearch as root

• Create esuser user, refer to Linux user management to add/delete users
• Switch user successfully

sudo su root
[sudo] esuser 的密码：

• Start abnormal again

bin/elasticsearch

[1]: max number of threads [3882] for user [esuser] is too low, increase to at least [4096]
[2]: max virtual memory areas vm.max_map_count [65530] is too low, increase to at least [262144]
[3]: the default discovery settings are unsuitable for production use; at least one of [discovery.seed_hosts, discovery.seed_providers, cluster.initial_master_nodes] must be configured

ES启动异常：max number of threads [3882] for user [xxx] is too low, increase to at least [4096]

ES启动异常：max virtual memory areas vm.max_map_count [65530] is too low, increase to at least [262144]

ES启动异常：the default discovery settings are unsuitable for production use； at least...

• Start again, add -d background start to prevent automatic ring comparison when launching

 

bin/elasticsearch -d

• Check the startup log, the file name is consistent with cluster.name.

tailf logs/lizz-application.log

• Start successfully, check the service

curl http://127.0.0.1:9200/

{
  "name" : "node-1",
  "cluster_name" : "lizz-application",
  "cluster_uuid" : "1ZwW2lw2RUKhqM9F1Bhu-A",
  "version" : {
    "number" : "7.10.1",
    "build_flavor" : "default",
    "build_type" : "tar",
    "build_hash" : "1c34507e66d7db1211f66f3513706fdf548736aa",
    "build_date" : "2020-12-05T01:00:33.671820Z",
    "build_snapshot" : false,
    "lucene_version" : "8.7.0",
    "minimum_wire_compatibility_version" : "6.8.0",
    "minimum_index_compatibility_version" : "6.0.0-beta1"
  },
  "tagline" : "You Know, for Search"
}