ElasticSearch基础——ElasticSearch6.x集群模式部署安装

之前我们进行了ElasticSearch的单节点安装部署，具体可以参考
ElasticSearch基础——ElasticSearch6.x单节点部署安装，
这里我们在此基础之上进行集群模式部署安装。

节点规划

节点	角色
master(192.168.124.11)	Elasticsearch、Kibana
slave1(192.168.124.12)	Elasticsearch

解压文件

之前我们已经在master上安装ElasticSearch，这里我们在slave1上做相同操作。

## 解压文件
[[email protected] opt]# tar -zxvf elasticsearch-6.6.0.tar.gz -C /opt/
## 新建es用户
[[email protected] opt]# useradd es
## 设置密码
[[email protected] opt]# passwd es
## 给es用户赋权
[[email protected] opt]# chown -R es elasticsearch-6.6.0

修改ElasticSearch配置文件

这里我们分别对master和slave1节点上的配置文件elasticsearch.yml进行修改，这里以master配置文件为例。

# ---------------------------------- Cluster -----------------------------------
#
# Use a descriptive name for your cluster:
# 集群名称，同一集群所有节点配置集群名称应该相同
cluster.name: bigdata-demo
#
# ------------------------------------ Node ------------------------------------
#
# Use a descriptive name for the node:
# 集群内各自节点名称唯一，这里我们master配置node-1,slave1配置node-2
node.name: node-1
...
# ---------------------------------- Network -----------------------------------
#
# Set the bind address to a specific IP (IPv4 or IPv6):
# 这里可以分别设置为各自的IP或者都设置成0.0.0.0，表示不限制任何IP访问。
network.host: 192.168.124.11
#
# 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]"]
# 在master上配置其它节点（这里只有slave1）IP，在slave1上配置其它节点（这里只有master）IP，以此类推。
discovery.zen.ping.unicast.hosts: ["192.168.124.12"]

修改Kibana配置文件

# Specifies the address to which the Kibana server will bind. IP addresses and host names are both valid values.
# The default is 'localhost', which usually means remote machines will not be able to connect.
# To allow connections from remote users, set this parameter to a non-loopback address.
# 这里可以设置成master的IP（Kibana和master部署在同一个节点上），或者直接使用0.0.0.0
server.host: "192.168.124.11"

# The Kibana server's name.  This is used for display purposes.
# 这里设置为集群名称，即master和slave1配置文件中的cluster.name
server.name: "bigdata-demo"

# The URLs of the Elasticsearch instances to use for all your queries.
# 这里配置各个节点
elasticsearch.hosts: ["http://192.168.124.11:9200","http://192.168.124.12:9200"]

启动并查看集群状态

分别启动master和slave1上的ElasticSearch服务，然后启动Kibana，访问Web UI界面：http://192.168.124.11:5601
可以在Kibana上通过执行GET /_cluster/health查看集群健康状态

{
  "cluster_name" : "bigdata-demo",
  "status" : "green",
  "timed_out" : false,
  "number_of_nodes" : 2,
  "number_of_data_nodes" : 2,
  "active_primary_shards" : 0,
  "active_shards" : 0,
  "relocating_shards" : 0,
  "initializing_shards" : 0,
  "unassigned_shards" : 0,
  "delayed_unassigned_shards" : 0,
  "number_of_pending_tasks" : 0,
  "number_of_in_flight_fetch" : 0,
  "task_max_waiting_in_queue_millis" : 0,
  "active_shards_percent_as_number" : 100.0
}