本文主要講elasticsearch-2.2.1的安裝過程。
准備工作：
1.搭建虛擬機
你需要先參考
把你的虛擬機搭建起來-hadoop環境可以先不用搭建（完成步驟1到步驟8）
2.下載elasticsearch包
這里我搭建的是4台虛擬機(node1,node2,node3,node4)
elasticsearch 只允許普通用戶操作，不允許root用戶操作
--1.關閉防火牆 service iptables stop --2.創建用戶elsearch useradd elsearch --3.給用戶elsearch設置密碼 passwd elsearch --4.在/opt目錄下面創建elsearch/es/目錄 mkdir /opt/elsearch/es/ --5.進入到/opt目錄下面 cd /opt/ --6.把elsearch目錄以及里面的子目錄的權限設置為elsearch chown -R elsearch：elsearch elsearch --此時，/elsearch, /elsearch/es的權限都應該為elsearch --7.切換用戶到elsearch su elsearch
此時，所有節點都應該是elsearch用戶，而不是root用戶。
現在去到node1節點上面進行操作
--此時，在node1上面操作 --1.此時，我們就可以把下載好的elasticsearch-2.2.1.tar.zip文件上傳到node1下面的/opt/elsearch/es/ --2.解壓/opt/elsearch/es/elasticsearch-2.2.1.tar.zip文件 cd /opt/elsearch/es/ unzip elasticsearch-2.2.1.tar.zip --3.修改配置文件 cd /opt/elsearch/es/elasticsearch-2.2.1/conf/ vi elasticsearch.yml # ======================== 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 see the documentation for further information on configuration options: # <http://www.elastic.co/guide/en/elasticsearch/reference/current/setup-configuration.html> # # ---------------------------------- Cluster ----------------------------------- # # Use a descriptive name for your cluster: # cluster.name: elsearch-app # # ------------------------------------ Node ------------------------------------ # # Use a descriptive name for the node: # node.name: node1 # # Add custom attributes to the node: # # node.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: # # ----------------------------------- Memory ----------------------------------- # # Lock the memory on startup: # # bootstrap.mlockall: true # # Make sure that the `ES_HEAP_SIZE` environment variable 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: 192.168.79.138 # # Set a custom port for HTTP: # http.port: 9200 # # For more information, see the documentation at: # <http://www.elastic.co/guide/en/elasticsearch/reference/current/modules-network.html> # # # discovery.zen.ping.unicast.hosts: ["host1", "host2"] # # Prevent the "split brain" by configuring the majority of nodes (total number of nodes / 2 + 1): # # discovery.zen.minimum_master_nodes: 3 # # For more information, see the documentation at: # <http://www.elastic.co/guide/en/elasticsearch/reference/current/modules-discovery.html> # # ---------------------------------- Gateway ----------------------------------- # # Block initial recovery after a full cluster restart until N nodes are started: # # gateway.recover_after_nodes: 3 # # For more information, see the documentation at: # <http://www.elastic.co/guide/en/elasticsearch/reference/current/modules-gateway.html> # # ---------------------------------- Various ----------------------------------- # # Disable starting multiple nodes on a single system: # # node.max_local_storage_nodes: 1 # # Require explicit names when deleting indices: # # action.destructive_requires_name: true discovery.zen.ping.multicast.enabled: false discovery.zen.ping.unicast.hosts: ["192.168.79.138","192.168.79.139", "192.168.79.140","192.168.79.141"] discovery.zen.ping_timeout: 120s client.transport.ping_timeout: 60s :wq --4.然后從node1分發到其他節點(node2, node3, node4)的相同目錄 cd /opt/elsearch/es scp -r ./elasticsearch-2.2.1 elsearch@node2:/opt/elsearch/es scp -r ./elasticsearch-2.2.1 elsearch@node3:/opt/elsearch/es scp -r ./elasticsearch-2.2.1 elsearch@node4:/opt/elsearch/es
接下來在node2，node3，node4上面進行操作
--分別修改node2，node3，node4上面的配置文件 cd /opt/elsearch/es/elasticsearch-2.2.1/conf/ vi elasticsearch.yml --修改兩個地方 --1.node.name: node1 --2.network.host: 192.168.79.138 --修改為和下面相對應，然后保存 192.168.79.138 node1 192.168.79.139 node2 192.168.79.140 node3 192.168.79.141 node4
最后，在所有節點（node1，node2，node3，node4）上面進行操作
--啟動elasticsearch cd /opt/elsearch/es/elasticsearch-2.2.1/bin ./elasticsearch
打開瀏覽器，輸入：node1:9200可以看見一下效果
添加插件elasticsearch-head
把下載好的插件重命名為
head
然后添加到所有節點（node1，node2，node3，node4）的
/opt/elsearch/es/elasticsearch-2.2.1/plugins
目錄。
然后重啟所有節點。
--啟動elasticsearch cd /opt/elsearch/es/elasticsearch-2.2.1/bin ./elasticsearch
效果如下：
了解更多：elasticsearch-head
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