本文介绍单机多节点的实例部署情况
1、实验拓扑图
我们实验三个节点，一个主节点，两个从节点
2、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_node1node.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: truehttp.cors.enabled: truehttp.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_node2node.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: falsebootstrap.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: truehttp.cors.enabled: truehttp.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_node3node.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: falsebootstrap.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: truehttp.cors.enabled: truehttp.cors.allow-origin: "*"
3、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/
