elasticsearch集群配置

一 通过编辑配置文件启动集群 config/elasticsearch.yml

master配置

# 集群名称
cluster.name: chenkl
# 节点名称
node.name: master
# 存放数据目录,先创建该目录
path.data: /home/elastic/data
# 存放日志目录,先创建该目录
path.logs: /home/elastic/logs
# 节点IP
network.host: 192.168.25.180
# tcp端口
transport.tcp.port: 9300
# http端口
http.port: 9200
# 种子节点列表，主节点的IP地址必须在seed_hosts中
discovery.seed_hosts: ["192.168.25.180","192.168.25.181","192.168.25.182"]
# 主合格节点列表，若有多个主节点，则主节点进行对应的配置
cluster.initial_master_nodes: ["master"]
# 主节点相关配置
node.master: true
node.data: false
node.ingest: false
node.ml: false
cluster.remote.connect: false
# 跨域
http.cors.enabled: true
http.cors.allow-origin: "*"

slave1

cluster.name: chenkl
node.name: slave1

path.data: /home/elastic/data
path.logs: /home/elastic/logs

network.host: 192.168.25.181
transport.tcp.port: 9300
http.port: 9200

discovery.seed_hosts: ["192.168.25.180","192.168.25.181","192.168.25.182"]
cluster.initial_master_nodes: ["master"]

node.master: false
node.data: true
node.ingest: false
node.ml: false
cluster.remote.connect: false

http.cors.enabled: true
http.cors.allow-origin: "*"

slave2

cluster.name: chenkl
node.name: slave2

path.data: /home/elastic/data
path.logs: /home/elastic/logs

network.host: 192.168.25.182
transport.tcp.port: 9300
http.port: 9200

discovery.seed_hosts: ["192.168.25.180","192.168.25.181","192.168.25.182"]
cluster.initial_master_nodes: ["master"]

node.master: false
node.data: true
node.ingest: false
node.ml: false
cluster.remote.connect: false

http.cors.enabled: true
http.cors.allow-origin: "*"

启动所有节点

cd /home/elasticsearch-7.2.0    
./bin/elasticsearch

问题 max virtual memory areas vm.max_map_count [65530] is too low, increase to at least [262144]

#切换到root用户
vi /etc/sysctl.conf

#在最后追加
vm.max_map_count=262144

#使用 sysctl -p 查看修改结果
sysctl -p

查看集群是否启动成功

查询集群节点

curl -XGET 'http://localhost:9200/_cat/nodes?v'

ip        heap.percent ram.percent cpu load_1m load_5m load_15m node.role master name
127.0.0.1           47          96   6    1.26    1.28     0.86 dilm      *      node-1
127.0.0.1           26          96   6    1.26    1.28     0.86 dilm      -      node-2

查询单个节点信息

curl -XGET 'http://localhost:9200/'


{
  "name" : "node-2",
  "cluster_name" : "my-es",
  "cluster_uuid" : "LnsMM4p1Royo4Ea19viusw",
  "version" : {
    "number" : "7.4.2",
    "build_flavor" : "default",
    "build_type" : "tar",
    "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"
}

二、通过命令行参数启动集群节点

cd /home/elasticsearch-7.2.0

节点1

./bin/elasticsearch -Enode.name=node-1 -Ehttp.port=9200 -Epath.data=/home/elastic/data -Epath.logs=/home/elastic/log

节点2

./bin/elasticsearch -Enode.name=node-2 -Ehttp.port=8200 -Epath.data=/home/elastic/data1 -Epath.logs=/home/elastic/log1