ES安装

安装版本：elasticsearch-6.6.1.tar.gz
1.准备工作
安装jdk1.8

2.安装ES

​ （1）将安装包解压到 /opt/dp 目录下

tar -zxvf  elasticsearch-6.6.1.tar.gz

​ （2）配置elasticsearch.yml，并创建对应的data和logs文件夹

# ---------------------------------- Cluster -----------------------------------
#
# Use a descriptive name for your cluster:
#
cluster.name: es
#
# ------------------------------------ Node ------------------------------------
#
# Use a descriptive name for the node:
# 配置单一节点名称，每个节点唯一标识
node.name: node-1                       
#
# Add custom attributes to the node:
#
# node.attr.rack: r1
#
# ----------------------------------- Paths ------------------------------------
#
# Path to directory where to store the data (separate multiple locations by comma):
#
path.data: /opt/dp/elasticsearch-6.6.1/data
#
# Path to log files:
#
path.logs: /opt/dp/elasticsearch-6.6.1/logs
#
# ----------------------------------- Memory -----------------------------------
#
# Lock the memory on startup:
#
bootstrap.memory_lock: false
bootstrap.system_call_filter: false
#
# ---------------------------------- Network -----------------------------------
#
# Set the bind address to a specific IP (IPv4 or IPv6):
# 端口
network.host: 0.0.0.0
#
# Set a custom port for HTTP:
#
http.port: 19270
transport.tcp.port: 19370
transport.tcp.compress: true
# ---------------------------------- Various -----------------------------------
#
# Require explicit names when deleting indices:
#
# action.destructive_requires_name: true
#
http.enabled: true
http.cors.enabled: true
http.cors.allow-origin: "*"
http.max_content_length: 128mb
discovery.zen.ping.unicast.hosts: ["172.17.8.27","172.17.8.28","172.17.8.35"]
discovery.zen.ping_timeout: 60s
discovery.zen.minimum_master_nodes: 2
discovery.zen.fd.ping_timeout: 60s
discovery.zen.fd.ping_retries: 6
gateway.recover_after_nodes: 3
gateway.recover_after_time: 10m
indices.queries.cache.size: 512mb
indices.memory.index_buffer_size: 5%
indices.memory.min_index_buffer_size: 256mb
#indices.memory.min_shard_index_buffer_size: 8mb 
indices.requests.cache.size: 2%
#indices.recovery.concurrent_streams: 8 
#indices.recovery.concurrent_small_file_streams: 4 
#indices.recovery.file_chunk_size: 2mb 
#indices.recovery.translog_ops: 2048 
#indices.recovery.translog_size: 2mb
indices.recovery.max_bytes_per_sec: 256mb
thread_pool.bulk.queue_size: 20000
thread_pool.search.queue_size: 20000
thread_pool.get.queue_size: 20000
thread_pool.index.queue_size: 10240

​ （3）新建用户，每台服务器都要新建，ES不允许root用户运行

groupadd elsearch                                    新增elsearch用户组
useradd elsearch -g elsearch -p elasticsearch        创建elsearch用户
chown -R elsearch:elsearch ./elasticsearch-6.6.1     用户目录权限

3.切换到elsearch用户下，启动ES

su elsearch
cd /opt/dp/elasticsearch-6.6.1/bin
./elasticsearch &

4.测试，访问 http://172.17.8.27:19270/，返回结果如下

{
  "name" : "node-1",
  "cluster_name" : "es",
  "cluster_uuid" : "HLCXHlh2TfiNj4EWPocsxQ",
  "version" : {
    "number" : "6.6.1",
    "build_flavor" : "default",
    "build_type" : "tar",
    "build_hash" : "1fd8f69",
    "build_date" : "2019-02-13T17:10:04.160291Z",
    "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"
}

ElasticSearch-head插件安装

1.准备工作

​ （1）安装Node.js,用yum安装
​ （2）安装npm
​ （3）安装grunt

2.在27服务器上安装elasticsearch-head

3.修改Gruntfile.js文件

port: 19338,
hostname: '0.0.0.0',

4.启动elasticsearch-head

cd /opt/dp/elasticsearch-6.6.1/jg_dashboard/elasticsearch-head/
#!/bin/bash
nohup grunt/bin/grunt server  >/dev/null &

5.浏览器访问 http://172.17.8.27:19338/ Elasticsearch.png

参考资料：
1.https://www.cnblogs.com/jstarseven/p/6803054.html
2.https://www.runoob.com/nodejs/nodejs-install-setup.html