centos7 搭建elastic search 单机三节点集群

　　一、实验拓扑图

　　　我们实验三个节点，一个主节点，两个从节点

　　二、单机多节点配置

elasticsearch集群配置比较简单，只需把每个节点的cluster name设置成相同的，es启动时会自动发现同一网段内相同cluster name的节点自动加入到集群中。

要做到单机上开多个实例，需要修改ES的默认配置，以下是一些配置要点：

node.max_local_storage_nodes

这个配置限制了单节点上可以开启的ES存储实例的个数，我们需要开多个实例，因此需要把这个配置写到配置文件中，并为这个配置赋值为2或者更高。

　　　http.port

这个配置是elasticsearch对外提供服务的http端口配置，默认情况下ES会取用9200~9299之间的端口，如果9200被占用就会自动使用9201，在单机多实例的配置中这个配置实际是不需要修改的。

　　　transport.tcp.port

这个配置指定了elasticsearch集群内数据通讯使用的端口，默认情况下为9300，与上面的http.port配置类似，ES也会自动为已占用的端口选择下一个端口号。我们可以将第一个实例的tcp传输端口配置为9300，第二实例配置为9301

　　　把下载解压lasticsearch-5.5.2目录复制两份，三个文件夹分别命名为elasticsearch-5.5.2-node_1 elasticsearch-5.5.2-node_2 elasticsearch-5.5.2-node_3 按照上边的配置信息修改各个节点elasticsearch.yml配置文件

　　　elasticsearch-5.5.2-node_1的elasticsearch.yml配置如下：

      # ======================== 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: ictr_ElasticSearch
      #
      # ------------------------------------ Node ------------------------------------
      #
      # Use a descriptive name for the node:
      #
      #换个节点名字
      node.name: ictr_node1
      node.master: true
      #
      # Add custom attributes to the node:
      #
      node.attr.rack: r1
      #
      #
      #这个配置限制了单节点上可以开启的ES存储实例的个数，我们需要开多个实例，因此需要把这个配置写到配置文件中，并为这个配置赋值为2或者更高
      node.max_local_storage_nodes: 3
      # ----------------------------------- Paths ------------------------------------
      #
      # Path to directory where to store the data (separate multiple locations by comma):
      #
      #path.data: /path/to/data
      #
      # Path to log files:
      #
      #path.logs: /path/to/logs
      #
      # ----------------------------------- Memory -----------------------------------
      #
      # Lock the memory on startup:
      #
      #bootstrap.memory_lock: false
      #bootstrap.system_call_filter: false
      #
      # 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: 127.0.0.1
      #
      # Set a custom port for HTTP:
      #
      http.port: 9200
      #
      transport.tcp.port: 9301
      # 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: ["127.0.0.1:9301"]  #候选主节点地址
      #
      # Prevent the "split brain" by configuring the majority of nodes (total number of master-eligibl
      #e nodes / 2 + 1):#
      discovery.zen.minimum_master_nodes: 1
      #
      # 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: true
      http.cors.enabled: true
      http.cors.allow-origin: "*"
  
 

elasticsearch-5.5.2-node_2和elasticsearch-5.5.2-node_2类似，的elasticsearch.yml配置如下：

      # ======================== 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: ictr_ElasticSearch
      #
      # ------------------------------------ Node ------------------------------------
      #
      # Use a descriptive name for the node:
      #
      #换个节点名字
      node.name: ictr_node2
      node.master: false
      #
      # Add custom attributes to the node:
      #
      node.attr.rack: r1
      #
      #
      #这个配置限制了单节点上可以开启的ES存储实例的个数，我们需要开多个实例，因此需要把这个配置写到配置文件中，并为这个配置赋值为2或者更高
      node.max_local_storage_nodes: 3
      # ----------------------------------- Paths ------------------------------------
      #
      # Path to directory where to store the data (separate multiple locations by comma):
      #
      #path.data: /path/to/data
      #
      # Path to log files:
      #
      #path.logs: /path/to/logs
      #
      # ----------------------------------- Memory -----------------------------------
      #
      # Lock the memory on startup:
      #
      bootstrap.memory_lock: false
      bootstrap.system_call_filter: false
      #
      # 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: 127.0.0.1
      #
      # Set a custom port for HTTP:
      #
      http.port: 9202
      #
      transport.tcp.port: 9302
      # 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: ["127.0.0.1:9301"]  #候选主节点地址
      #
      # Prevent the "split brain" by configuring the majority of nodes (total number of master-eligibl
      #e nodes / 2 + 1):#
      #discovery.zen.minimum_master_nodes: 1
      #
      # 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: true
      http.cors.enabled: true
      http.cors.allow-origin: "*"
  
 

elasticsearch-5.5.2-node_3的elasticsearch.yml配置如下：

      # ======================== 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: ictr_ElasticSearch
      #
      # ------------------------------------ Node ------------------------------------
      #
      # Use a descriptive name for the node:
      #
      #换个节点名字
      node.name: ictr_node3
      node.master: false
      #
      # Add custom attributes to the node:
      #
      node.attr.rack: r1
      #
      #
      #这个配置限制了单节点上可以开启的ES存储实例的个数，我们需要开多个实例，因此需要把这个配置写到配置文件中，并为这个配置赋值为2或者更高
      node.max_local_storage_nodes: 3
      # ----------------------------------- Paths ------------------------------------
      #
      # Path to directory where to store the data (separate multiple locations by comma):
      #
      #path.data: /path/to/data
      #
      # Path to log files:
      #
      #path.logs: /path/to/logs
      #
      # ----------------------------------- Memory -----------------------------------
      #
      # Lock the memory on startup:
      #
      bootstrap.memory_lock: false
      bootstrap.system_call_filter: false
      #
      # 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: 127.0.0.1
      #
      # Set a custom port for HTTP:
      #
      http.port: 9203
      #
      transport.tcp.port: 9303
      # 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: ["127.0.0.1:9301"]  #候选主节点地址
      #
      # Prevent the "split brain" by configuring the majority of nodes (total number of master-eligibl
      #e nodes / 2 + 1):#
      #discovery.zen.minimum_master_nodes: 1
      #
      # 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: true
      http.cors.enabled: true
      http.cors.allow-origin: "*"
  
 

　　三、windows启动节点

分别启动三个elasticsearch实例：

　　4、访问浏览器

http://127.0.0.1:9100/

五、linux 下启动 节点

es 默认启动时候占用 内存2G， 内存不足会导致启动失败，我们可以修改 config 文件下的jvm.options 的 jvm 参数    

vim jvm.options

su root

chown  -R dzx:dzx   /usr/local/elasticsearch-5.3.1/bin/elasticsearch

su dzx

./elasticsearch-5.3.1/bin/elasticsearch

注意：elasticsearch root 用户无法启动，需要用普通用户启动。

文章来源: blog.csdn.net，作者：血煞风雨城2018，版权归原作者所有，如需转载，请联系作者。

原文链接：blog.csdn.net/qq_31905135/article/details/83650716