ubuntu下搭建elasticsearch集群

桃扇骨 2022-05-06 12:27 315阅读 0赞

在Ubuntu 18.04.1 LTS搭建一个简单的elasticsearch集群demo，具体情况如下：

集群名称：elasticsearch-cluster-demo  
主节点：1个 node-master-one  
数据节点：2个 node-data-one、node-data-two  
客户端节点：1个 node-client-one

### 文章目录 ###

*   *  elasticsearch 安装
     *  基本集群配置
     *   *   *  node-master-one
             *  node-data-one
             *  node-data-two
             *  node-client-one
     *  集群状态检测

## elasticsearch 安装 ##

elasticsearch 的安装可以点击参考文章：  
[ubantu下安装elasticsearch][ubantu_elasticsearch]

拷贝几个es安装包文件夹，进行相应节点的命名，再进行后续的修改配置。

## 基本集群配置 ##

#### node-master-one ####

# 集群名称
    cluster.name: elasticsearch-cluster-demo
    #
    # 节点信息
    node.name: node-master-one
    node.master: true
    node.data: false
    #
    # Path to directory where to store the data (separate multiple locations by comma):
    # es data 存储路径
    path.data: /home/environment/elasticsearch-cluster/elasticsearch-master-one/data
    #
    # Path to log files:
    # log存储路径
    path.logs: /home/environment/elasticsearch-cluster/elasticsearch-master-one/logs
    #
    # Set the bind address to a specific IP (IPv4 or IPv6):
    # 网路监听
    network.host: 0.0.0.0
    http.port: 9200
    transport.tcp.port: 9300
    #
    # 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]"]
    # 可以发现当前节点的主节点ip:port
    discovery.zen.ping.unicast.hosts: ["127.0.0.1:9300"]
    # 
    # Prevent the "split brain" by configuring the majority of nodes (total number of master-eligible nodes / 2 + 1):
    # 集群最小主节点个数
    #discovery.zen.minimum_master_nodes: 2
    #
    # 设置跨域问题，方便使用elasticsearch-head来检测集群状态
    http.cors.enabled: true
    http.cors.allow-origin: /.*/

#### node-data-one ####

# 集群名称
    cluster.name: elasticsearch-cluster-demo
    #
    # 节点信息
    node.name: node-data-one
    node.master: false
    node.data: true
    #
    # Path to directory where to store the data (separate multiple locations by comma):
    # es data 存储路径
    path.data: /home/environment/elasticsearch-cluster/elasticsearch-data-one/data
    #
    # Path to log files:
    # log存储路径
    path.logs: /home/environment/elasticsearch-cluster/elasticsearch-data-one/logs
    #
    # Set the bind address to a specific IP (IPv4 or IPv6):
    # 网路监听
    network.host: 0.0.0.0
    http.port: 9210
    transport.tcp.port: 9310
    #
    # 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]"]
    # 可以发现当前节点的主节点ip:port
    discovery.zen.ping.unicast.hosts: ["127.0.0.1:9300"]
    # 
    # Prevent the "split brain" by configuring the majority of nodes (total number of master-eligible nodes / 2 + 1):
    # 集群最小主节点个数
    #discovery.zen.minimum_master_nodes: 2
    #
    # 设置跨域问题，方便使用elasticsearch-head来检测集群状态
    http.cors.enabled: true
    http.cors.allow-origin: /.*/

#### node-data-two ####

# 集群名称
    cluster.name: elasticsearch-cluster-demo
    #
    # 节点信息
    node.name: node-data-two
    node.master: false
    node.data: true
    #
    # Path to directory where to store the data (separate multiple locations by comma):
    # es data 存储路径
    path.data: /home/environment/elasticsearch-cluster/elasticsearch-data/two/data
    #
    # Path to log files:
    # log存储路径
    path.logs: /home/environment/elasticsearch-cluster/elasticsearch-data-two/logs
    #
    # Set the bind address to a specific IP (IPv4 or IPv6):
    # 网路监听
    network.host: 0.0.0.0
    http.port: 9211
    transport.tcp.port: 9311
    #
    # 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]"]
    # 可以发现当前节点的主节点ip:port
    discovery.zen.ping.unicast.hosts: ["127.0.0.1:9300"]
    # 
    # Prevent the "split brain" by configuring the majority of nodes (total number of master-eligible nodes / 2 + 1):
    # 集群最小主节点个数
    #discovery.zen.minimum_master_nodes: 2
    #
    # 设置跨域问题，方便使用elasticsearch-head来检测集群状态
    http.cors.enabled: true
    http.cors.allow-origin: /.*/

#### node-client-one ####

# 集群名称
    cluster.name: elasticsearch-cluster-demo
    #
    # 节点信息
    node.name: node-client-one
    node.master: false
    node.data: false
    #
    # Path to directory where to store the data (separate multiple locations by comma):
    # es data 存储路径
    path.data: /home/environment/elasticsearch-cluster/elasticsearch-client-one/data
    #
    # Path to log files:
    # log存储路径
    path.logs: /home/environment/elasticsearch-cluster/elasticsearch-client-one/logs
    #
    # Set the bind address to a specific IP (IPv4 or IPv6):
    # 网路监听
    network.host: 0.0.0.0
    http.port: 9220
    transport.tcp.port: 9320
    #
    # 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]"]
    # 可以发现当前节点的主节点ip:port
    discovery.zen.ping.unicast.hosts: ["127.0.0.1:9300"]
    # 
    # Prevent the "split brain" by configuring the majority of nodes (total number of master-eligible nodes / 2 + 1):
    # 集群最小主节点个数
    #discovery.zen.minimum_master_nodes: 2
    #
    # 设置跨域问题，方便使用elasticsearch-head来检测集群状态
    http.cors.enabled: true
    http.cors.allow-origin: /.*/

## 集群状态检测 ##

当对每一个es节点的配置修改完以后，便可以启动每个节点，在主节点启动后，便可以使用elasticsearch-head来检测es的集群状态，也可以通过查看es的日志来查看节点自动加入集群的情况。

elasticsearch-head项目托管在github上，安装方式可见项目主页的README.txtile文件。项目地址如下:

[https://github.com/mobz/elasticsearch-head][https_github.com_mobz_elasticsearch-head]

安装成功后，在接入输入要连接的集群的某一个主节点的ip与端口，连接成功后即可看见该集群的状态，如下图所示：

![在这里插入图片描述][70]

[ubantu_elasticsearch]: https://blog.csdn.net/qq_28851503/article/details/83038945
[https_github.com_mobz_elasticsearch-head]: https://github.com/mobz/elasticsearch-head
[70]: /images/20220506/842a3bc634bb45cd9621f4f9be39a28d.png