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软件环境:

ElasticSearch5.4.3

Centos 6.8 两台

JavaJDK 1.8.0_131

集群名称：

cluster.name： test_es

node.name：

节点1: node-115

节点2: node-114

搭建开始：

前面单节点搭建完成之后，下面搭建集群，比较简单因为问题都上面遇到的解决了，剩下的问题就不多了。

安装完成之后，按照前两篇的步骤，下面修改配置文件/etc/elasticsearch/elasticsearch.yml如下：

# ======================== Elasticsearch Configuration =========================## NOTE: Elasticsearch comes with reasonable defaults for most settings.#       Before you set out to tweak and tune the configuration, make sure you#       understand what are you trying to accomplish and the consequences.## The primary way of configuring a node is via this file. This template lists# the most important settings you may want to configure for a production cluster.## Please consult the documentation for further information on configuration options:# https://www.elastic.co/guide/en/elasticsearch/reference/index.html## ---------------------------------- Cluster -----------------------------------## Use a descriptive name for your cluster:#cluster.name: test_es #集群名称必须一样## ------------------------------------ Node ------------------------------------## Use a descriptive name for the node:#node.name: node-115 #两台服务器节点名字不能相同## 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: /mnt/elasticsearch-5.4.3/data## Path to log files:#path.logs: /mnt/elasticsearch-5.4.3/logs## ----------------------------------- Memory -----------------------------------## Lock the memory on startup:#bootstrap.memory_lock: true## Make sure that the heap size is set to about half the memory available# on the system and that the owner of the process is allowed to use this# limit.## Elasticsearch performs poorly when the system is swapping the memory.## ---------------------------------- Network -----------------------------------## Set the bind address to a specific IP (IPv4 or IPv6):#network.host: 10.144.255.45 #本机的域内ip## Set a custom port for HTTP:##http.port: 9200## For more information, consult the network module documentation.## --------------------------------- Discovery ----------------------------------## Pass an initial list of hosts to perform discovery when new node is started:# The default list of hosts is ["127.0.0.1", "[::1]"]#discovery.zen.ping.unicast.hosts: ["10.163.189.82"] #另一台服务器的域内ip## Prevent the "split brain" by configuring the majority of nodes (total number of master-eligible nodes / 2 + 1):#discovery.zen.minimum_master_nodes: 2## For more information, consult the zen discovery module documentation.## ---------------------------------- Gateway -----------------------------------## Block initial recovery after a full cluster restart until N nodes are started:##gateway.recover_after_nodes: 3## For more information, consult the gateway module documentation.## ---------------------------------- Various -----------------------------------## Require explicit names when deleting indices:##action.destructive_requires_name: truebootstrap.system_call_filter: false

两台机器的配置基本相同，

elasticsearch.yml两台不同的地方

 1. 上面标注域内ip的地方，network.host每台服务器上都填写自己的域内也就是内网ip。   

 2. node.name各自取一个名称，不能相同。

 3. discovery.zen.ping.unicast.hosts填写另外几台，这里只有一台，多个用,隔开即可，然后分别启动两台服务器的节点。如下：

第一台服务器：下面是tail看日志信息有点多

第二台服务器的启动：启动方式一样，启动完成查看启动情况

这样就集群了两个节点。

配置文件：