概述
Elasticsearch-01CentOS7单节点部署ES5.6.16中我们学习了ES单节点的部署，这里我们来看下ES集群是如何部署的吧
CentOS上部署ES集群
集群组成
- 节点数量： 3个 （1个Master 2个Slave）
- OS: CentOS 7
- IP: 192.168.91.128
- port : master-9200 slave01-8200 slave02-7200
方便起见，先按照伪集群模式部署吧，在同一台主机上使用不同的端口来区分不同的节点，当然了你也可以使用3台虚机,那是最好不过的了
关键配置信息
必须保证集群名相同，如果节点处于同一局域网同一网段，es会自动去发现其他的节点。
elasticsearch.yml
Master
# 绑定的服务器IP，可设置为本机IP network.host: 192.168.91.128 #启动的端口，默认9200 http.port: 9200 #跨域设置 http.cors.enabled: true http.cors.allow-origin: "*" #集群信息 cluster.name: artisan node.name: master node.master: true
其他配置，也可以按需修改
Slave01：
#host 和 端口 network.host: 192.168.91.128 http.port: 8200 #集群信息 cluster.name: artisan node.name: slave01 #默认的通讯接口是9300,用来发现master信息 discovery.zen.ping.unicast.hosts: ["192.168.91.128:9300"]
Slave02:
#host 和 端口 network.host: 192.168.91.128 http.port: 7200 #集群信息 cluster.name: artisan node.name: slave02 #默认的通讯接口是9300,用来发现master信息 discovery.zen.ping.unicast.hosts: ["192.168.91.128:9300"]
Master节点搭建
修改elasticsearch.yml中的配置
# ======================== 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: my-application # # ------------------------------------ Node ------------------------------------ # # Use a descriptive name for the node: # #node.name: node-1 # # 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: /path/to/data # # Path to log files: # #path.logs: /path/to/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: 192.168.91.128 # # 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: ["host1", "host2"] # # Prevent the "split brain" by configuring the majority of nodes (total number of master-eligible nodes / 2 + 1): # #discovery.zen.minimum_master_nodes: 3 # # 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 # #跨域设置 http.cors.enabled: true http.cors.allow-origin: "*" #集群信息 cluster.name: artisan node.name: master node.master: true
通过head插件访问集群信息
可以看到 节点名字已经变成了master, 并且前面的五角星表示为master节点（指挥官） 。
Slave1节点搭建
复制一份，然后修改配置文件
[root@localhost ~]# su - elastic Last login: Thu Apr 18 08:47:46 PDT 2019 on pts/1 [elastic@localhost ~]$ pwd /home/elastic [elastic@localhost ~]$ ll total 33108 drwxr-xr-x. 9 elastic elastic 4096 Apr 18 03:30 elasticsearch-5.6.16 -rw-r--r--. 1 root root 33894983 Apr 18 03:27 elasticsearch-5.6.16.tar.gz [elastic@localhost ~]$ [elastic@localhost ~]$ [elastic@localhost ~]$ mkdir elasticsearch-5.6.16-salve [elastic@localhost ~]$ cp elasticsearch-5.6.16.tar.gz elasticsearch-5.6.16-salve/ [elastic@localhost ~]$ cd elasticsearch-5.6.16-salve/ [elastic@localhost elasticsearch-5.6.16-salve]$ ll total 33104 -rw-r--r--. 1 elastic elastic 33894983 Apr 18 18:28 elasticsearch-5.6.16.tar.gz [elastic@localhost elasticsearch-5.6.16-salve]$ tar -xvzf elasticsearch-5.6.16.tar.gz [elastic@localhost elasticsearch-5.6.16-salve]$ cp -r elasticsearch-5.6.16 elasticsearch-slave01 [elastic@localhost elasticsearch-5.6.16-salve]$ cp -r elasticsearch-5.6.16 elasticsearch-slave02 [elastic@localhost elasticsearch-5.6.16-salve]$ cd elasticsearch-slave01 [elastic@localhost elasticsearch-slave01]$ vim config/elasticsearch.yml
elasticsearch.yml 追加如下配置
#host 和 端口 network.host: 192.168.91.128 http.port: 8200 #集群信息 cluster.name: artisan node.name: slave01 #默认的通讯接口是9300,找到集群的信 discovery.zen.ping.unicast.hosts: ["192.168.91.128:9300"]
Slave2节点搭建
[elastic@localhost elasticsearch-5.6.16-salve]$ cd elasticsearch-slave02
elasticsearch.yml 追加如下配置
#host 和 端口 network.host: 192.168.91.128 http.port: 7200 #集群信息 cluster.name: artisan node.name: slave02 #默认的通讯接口是9300,用来发现master信息 discovery.zen.ping.unicast.hosts: ["192.168.91.128:9300"]
我这里用的虚机的内存太小了，无法启动两个及两个以上的节点, 为了验证配置的正确性，windows上部署下吧
Windows 部署 ES集群
三个节点：
elasticsearch.yml配置修改
elasticsearch.yml的配置如下：
和centos中的配置一样，仅仅是IP不同
master:
# 绑定的服务器IP，可设置为本机IP network.host: 127.0.0.1 #启动的端口，默认9200 http.port: 9200 #跨域设置 http.cors.enabled: true http.cors.allow-origin: "*" #集群信息 cluster.name: artisan node.name: master node.master: true
salve01:
#host 和 端口 network.host: 127.0.0.1 http.port: 8200 #集群信息 cluster.name: artisan node.name: slave01 #默认的通讯接口是9300,用来发现master信息 discovery.zen.ping.unicast.hosts: ["127.0.0.1:9300"]
slave02:
#host 和 端口 network.host: 127.0.0.1 http.port: 7200 #集群信息 cluster.name: artisan node.name: slave02 #默认的通讯接口是9300,用来发现master信息 discovery.zen.ping.unicast.hosts: ["127.0.0.1:9300"]
启动服务
双击H:\elasticsearch-5.6.16-slave02\bin\elasticsearch.bat
通过head 插件查看 集群信息
配置OK
注意事项
found existing node {master}{xdHjXCdET_e7M0G_MYNiTQ}{WbXaI8HtRDCbFEzS8VtdIg}{127.0.0.1}{127.0.0.1:9300} with the same id but is a different node instance];
如果配到了这种错误，很明显id重复了，如果配置没有问题，看下你是不是直接copy的已经存在的节点data目录中的数据重复导致的。 建议解压一个新的压缩包，重新配置，避免上述错误。
