centos7 部署Elasticsearch並安裝head外掛實現ES叢集的視覺化管理

最近看了es的一些介紹想自己動手安裝學習下，畢竟不實際執行是不會遇到坑的，嗯，你沒看錯，全是坑，閒言少敘，直接整體，到ES官網下載
這裡我直接下載zip檔案，

首先機器要安裝jdk 1.8+ 具體參考：安裝教程

[niezp@localhost elasticsearch-6.0.0]$ tar -vxf elasticsearch-6.0.0.tar.gz

內部結構

[[email protected] elasticsearch-6.0.0]$ ll
總用量 244
drwxr-xr-x
 
  2 niezp niezp   4096 11月 10 18:42 bin
drwxr-xr-x  2 niezp niezp     75 12月  6 15:39 config
drwxrwxr-x  3 niezp niezp     19 12月  6 11:45 data
-rw-rw-r--  1 niezp niezp  18180 12月  6 15:01 hs_err_pid9395.log
drwxr-xr-x  2 niezp niezp   4096 11月 10 18:42 lib
-rw-r--r--  1 niezp niezp  11358 11月 10 18:39 LICENSE
 
.txt
drwxrwxr-x  2 niezp niezp    286 12月  6 14:21 logs
drwxr-xr-x 14 niezp niezp    251 11月 10 18:42 modules
-rw-rw-r--  1 niezp niezp 193097 11月 10 18:42 NOTICE.txt
drwxr-xr-x  2 niezp niezp      6 12月  6 14:17 plugins
-rw-r--r--  1 niezp niezp   9326 11月 10 18:39 README.textile
[[email protected]
 
 elasticsearch-6.0.0]$ 

接下來我們配置 config/elasticsearch.yml檔案

# ======================== 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: 0.0.0.0
#
# 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

# 叢集的名字
cluster.name: niezp

# 節點名字
node.name: niezp-master
#是否是master
node.master: true

#ES的監聽地址，這樣別的機器也可以訪問
network.host: 192.168.174.148

# 預設的就好
http.port: 9200

#本機最大允許執行節點個數
node.max_local_storage_nodes: 3

# 增加新的引數，這樣head外掛可以訪問es，解決跨域訪問問題
http.cors.enabled: true
http.cors.allow-origin: "*"

這裡ES配置就結束了，對沒有錯，就這麼簡單

啟動ES:

[niezp@localhost elasticsearch-6.0.0]$ ./bin/elasticsearch

注意執行目錄

看到輸出如下資訊 started

[2017-12-06T15:20:46,189][INFO ][o.e.e.NodeEnvironment    ] [niezp-master] using [1] data paths, mounts [[/ (rootfs)]], net usable_space [11.2gb], net total_space [36.9gb], types [rootfs]
[2017-12-06T15:20:46,189][INFO ][o.e.e.NodeEnvironment    ] [niezp-master] heap size [495.3mb], compressed ordinary object pointers [true]
[2017-12-06T15:20:46,190][INFO ][o.e.n.Node               ] [niezp-master] node name [niezp-master], node ID [Jena8SthQXiBtzcs5-y0QQ]
[2017-12-06T15:20:46,191][INFO ][o.e.n.Node               ] [niezp-master] version[6.0.0], pid[5031], build[8f0685b/2017-11-10T18:41:22.859Z], OS[Linux/3.10.0-514.el7.x86_64/amd64], JVM[Oracle Corporation/Java HotSpot(TM) 64-Bit Server VM/1.8.0_131/25.131-b11]
[2017-12-06T15:20:46,191][INFO ][o.e.n.Node               ] [niezp-master] JVM arguments [-Xms512M, -Xmx512M, -XX:+UseConcMarkSweepGC, -XX:CMSInitiatingOccupancyFraction=75, -XX:+UseCMSInitiatingOccupancyOnly, -XX:+AlwaysPreTouch, -Xss1m, -Djava.awt.headless=true, -Dfile.encoding=UTF-8, -Djna.nosys=true, -XX:-OmitStackTraceInFastThrow, -Dio.netty.noUnsafe=true, -Dio.netty.noKeySetOptimization=true, -Dio.netty.recycler.maxCapacityPerThread=0, -Dlog4j.shutdownHookEnabled=false, -Dlog4j2.disable.jmx=true, -XX:+HeapDumpOnOutOfMemoryError, -Des.path.home=/home/niezp/ES/elasticsearch-6.0.0, -Des.path.conf=/home/niezp/ES/elasticsearch-6.0.0/config]
[2017-12-06T15:20:47,036][INFO ][o.e.p.PluginsService     ] [niezp-master] loaded module [aggs-matrix-stats]
[2017-12-06T15:20:47,037][INFO ][o.e.p.PluginsService     ] [niezp-master] loaded module [analysis-common]
[2017-12-06T15:20:47,037][INFO ][o.e.p.PluginsService     ] [niezp-master] loaded module [ingest-common]
[2017-12-06T15:20:47,037][INFO ][o.e.p.PluginsService     ] [niezp-master] loaded module [lang-expression]
[2017-12-06T15:20:47,037][INFO ][o.e.p.PluginsService     ] [niezp-master] loaded module [lang-mustache]
[2017-12-06T15:20:47,037][INFO ][o.e.p.PluginsService     ] [niezp-master] loaded module [lang-painless]
[2017-12-06T15:20:47,038][INFO ][o.e.p.PluginsService     ] [niezp-master] loaded module [parent-join]
[2017-12-06T15:20:47,038][INFO ][o.e.p.PluginsService     ] [niezp-master] loaded module [percolator]
[2017-12-06T15:20:47,038][INFO ][o.e.p.PluginsService     ] [niezp-master] loaded module [reindex]
[2017-12-06T15:20:47,038][INFO ][o.e.p.PluginsService     ] [niezp-master] loaded module [repository-url]
[2017-12-06T15:20:47,038][INFO ][o.e.p.PluginsService     ] [niezp-master] loaded module [transport-netty4]
[2017-12-06T15:20:47,038][INFO ][o.e.p.PluginsService     ] [niezp-master] loaded module [tribe]
[2017-12-06T15:20:47,039][INFO ][o.e.p.PluginsService     ] [niezp-master] no plugins loaded
[2017-12-06T15:20:48,519][INFO ][o.e.d.DiscoveryModule    ] [niezp-master] using discovery type [zen]
[2017-12-06T15:20:49,097][INFO ][o.e.n.Node               ] [niezp-master] initialized
[2017-12-06T15:20:49,098][INFO ][o.e.n.Node               ] [niezp-master] starting ...
[2017-12-06T15:20:49,253][INFO ][o.e.t.TransportService   ] [niezp-master] publish_address {127.0.0.1:9300}, bound_addresses {127.0.0.1:9300}
[2017-12-06T15:20:52,347][INFO ][o.e.c.s.MasterService    ] [niezp-master] zen-disco-elected-as-master ([0] nodes joined), reason: new_master {niezp-master}{Jena8SthQXiBtzcs5-y0QQ}{ctySsfBQRp2BgGHXAhj_FQ}{127.0.0.1}{127.0.0.1:9300}
[2017-12-06T15:20:52,356][INFO ][o.e.c.s.ClusterApplierService] [niezp-master] new_master {niezp-master}{Jena8SthQXiBtzcs5-y0QQ}{ctySsfBQRp2BgGHXAhj_FQ}{127.0.0.1}{127.0.0.1:9300}, reason: apply cluster state (from master [master {niezp-master}{Jena8SthQXiBtzcs5-y0QQ}{ctySsfBQRp2BgGHXAhj_FQ}{127.0.0.1}{127.0.0.1:9300} committed version [1] source [zen-disco-elected-as-master ([0] nodes joined)]])
[2017-12-06T15:20:52,375][INFO ][o.e.h.n.Netty4HttpServerTransport] [niezp-master] publish_address {127.0.0.1:9200}, bound_addresses {127.0.0.1:9200}
[2017-12-06T15:20:52,375][INFO ][o.e.n.Node               ] [niezp-master] started
[2017-12-06T15:20:52,419][INFO ][o.e.g.GatewayService     ] [niezp-master] recovered [0] indices into cluster_state

[2017-12-06T15:20:52,375][INFO ][o.e.n.Node] [niezp-master] started 就說明啟動成功

開啟瀏覽器訪問

#ES的監聽地址，這樣別的機器也可以訪問
network.host: 192.168.174.148

配置過的ip地址加9200埠

{
  "name" : "niezp-master",
  "cluster_name" : "niezp",
  "cluster_uuid" : "q7r5GHy4QsOyN_rKyW1K9A",
  "version" : {
    "number" : "6.0.0",
    "build_hash" : "8f0685b",
    "build_date" : "2017-11-10T18:41:22.859Z",
    "build_snapshot" : false,
    "lucene_version" : "7.0.1",
    "minimum_wire_compatibility_version" : "5.6.0",
    "minimum_index_compatibility_version" : "5.0.0"
  },
  "tagline" : "You Know, for Search"
}

返回如下資訊，是不是看著眼熟，name，cluster_name就是我們自定義配置的資訊，至此單機節店就安裝完了，如果啟動報錯

[[email protected] bin]$ sh elasticsearch 
[2017-11-23T23:25:41,142][INFO ][o.e.n.Node               ] [] initializing ...
[2017-11-23T23:25:41,203][INFO ][o.e.e.NodeEnvironment    ] [l2KjKQB] using [1] data paths, mounts [[/ (rootfs)]], net usable_space [28.4gb], net total_space [35.5gb], types [rootfs]
[2017-11-23T23:25:41,204][INFO ][o.e.e.NodeEnvironment    ] [l2KjKQB] heap size [989.8mb], compressed ordinary object pointers [true]
[2017-11-23T23:25:41,205][INFO ][o.e.n.Node               ] node name [l2KjKQB] derived from node ID [l2KjKQBBSRacQ3kzNB2Qgg]; set [node.name] to override
[2017-11-23T23:25:41,205][INFO ][o.e.n.Node               ] version[6.0.0], pid[9359], build[8f0685b/2017-11-10T18:41:22.859Z], OS[Linux/3.10.0-514.26.2.el7.x86_64/amd64], JVM[Oracle Corporation/Java HotSpot(TM) 64-Bit Server VM/1.8.0_121/25.121-b13]
[2017-11-23T23:25:41,205][INFO ][o.e.n.Node               ] JVM arguments [-Xms1g, -Xmx1g, -XX:+UseConcMarkSweepGC, -XX:CMSInitiatingOccupancyFraction=75, -XX:+UseCMSInitiatingOccupancyOnly, -XX:+AlwaysPreTouch, -Xss1m, -Djava.awt.headless=true, -Dfile.encoding=UTF-8, -Djna.nosys=true, -XX:-OmitStackTraceInFastThrow, -Dio.netty.noUnsafe=true, -Dio.netty.noKeySetOptimization=true, -Dio.netty.recycler.maxCapacityPerThread=0, -Dlog4j.shutdownHookEnabled=false, -Dlog4j2.disable.jmx=true, -XX:+HeapDumpOnOutOfMemoryError, -Des.path.home=/usr/local/elasticsearch/elasticsearch-6.0.0, -Des.path.conf=/usr/local/elasticsearch/elasticsearch-6.0.0/config]
[2017-11-23T23:25:41,852][INFO ][o.e.p.PluginsService     ] [l2KjKQB] loaded module [aggs-matrix-stats]
[2017-11-23T23:25:41,853][INFO ][o.e.p.PluginsService     ] [l2KjKQB] loaded module [analysis-common]
[2017-11-23T23:25:41,853][INFO ][o.e.p.PluginsService     ] [l2KjKQB] loaded module [ingest-common]
[2017-11-23T23:25:41,853][INFO ][o.e.p.PluginsService     ] [l2KjKQB] loaded module [lang-expression]
[2017-11-23T23:25:41,853][INFO ][o.e.p.PluginsService     ] [l2KjKQB] loaded module [lang-mustache]
[2017-11-23T23:25:41,853][INFO ][o.e.p.PluginsService     ] [l2KjKQB] loaded module [lang-painless]
[2017-11-23T23:25:41,853][INFO ][o.e.p.PluginsService     ] [l2KjKQB] loaded module [parent-join]
[2017-11-23T23:25:41,853][INFO ][o.e.p.PluginsService     ] [l2KjKQB] loaded module [percolator]
[2017-11-23T23:25:41,853][INFO ][o.e.p.PluginsService     ] [l2KjKQB] loaded module [reindex]
[2017-11-23T23:25:41,854][INFO ][o.e.p.PluginsService     ] [l2KjKQB] loaded module [repository-url]
[2017-11-23T23:25:41,854][INFO ][o.e.p.PluginsService     ] [l2KjKQB] loaded module [transport-netty4]
[2017-11-23T23:25:41,854][INFO ][o.e.p.PluginsService     ] [l2KjKQB] loaded module [tribe]
[2017-11-23T23:25:41,854][INFO ][o.e.p.PluginsService     ] [l2KjKQB] no plugins loaded
[2017-11-23T23:25:42,794][INFO ][o.e.d.DiscoveryModule    ] [l2KjKQB] using discovery type [zen]
[2017-11-23T23:25:43,151][INFO ][o.e.n.Node               ] initialized
[2017-11-23T23:25:43,151][INFO ][o.e.n.Node               ] [l2KjKQB] starting ...
[2017-11-23T23:25:43,245][INFO ][o.e.t.TransportService   ] [l2KjKQB] publish_address {192.168.1.108:9300}, bound_addresses {[::]:9300}
[2017-11-23T23:25:43,253][INFO ][o.e.b.BootstrapChecks    ] [l2KjKQB] bound or publishing to a non-loopback or non-link-local address, enforcing bootstrap checks
ERROR: [2] bootstrap checks failed
[1]: max file descriptors [4096] for elasticsearch process is too low, increase to at least [65536]
[2]: max virtual memory areas vm.max_map_count [65530] is too low, increase to at least [262144]
[2017-11-23T23:25:43,258][INFO ][o.e.n.Node               ] [l2KjKQB] stopping ...
[2017-11-23T23:25:43,308][INFO ][o.e.n.Node               ] [l2KjKQB] stopped
[2017-11-23T23:25:43,308][INFO ][o.e.n.Node               ] [l2KjKQB] closing ...
[2017-11-23T23:25:43,314][INFO ][o.e.n.Node               ] [l2KjKQB] closed

重點資訊

ERROR: [2] bootstrap checks failed
[1]: max file descriptors [4096] for elasticsearch process is too low, increase to at least [65536]
[2]: max virtual memory areas vm.max_map_count [65530] is too low, increase to at least [262144]

這裡需要我們修改

1.max file descriptors [4096] for elasticsearch process is too low, increase to at least [65536]

修改/etc/security/limits.conf檔案，新增或修改如下行：
*        hard    nofile           65536
*        soft    nofile           65536
2.max virtual memory areas vm.max......

修改 /etc/sysctl.conf 檔案,新增如下行：

vm.max_map_count=262144
修改好了以後，呼叫sysctl -a檢視，發現引數並沒有變動，要重啟才可以。

重啟以後，再啟動es即可，就可以通過主機ip訪問。

如果是記憶體不足就需要調整記憶體大小了或者調整config/jvm.options的引數

-Xms1g
-Xmx1g

改為

-Xms512M
-Xmx512M

如果還不行就需要擴充記憶體了。還有很多坑可以參考各種坑
下面說下怎麼安裝head外掛並構成多個節點的叢集，這裡我們先說安裝head外掛，可以說我在安裝是遇到了很多坑，看了很多部落格被誤導，廢了半天時間，下面來說下：
下載外掛：

wget  https://github.com/mobz/elasticsearch-head/archive/master.zip

由於執行head需要執行node所以也要下載node，具體版本可以參考node

wget https://npm.taobao.org/mirrors/node/latest-v4.x/node-v4.4.7-linux-x64.tar.gz
tar -zxvf node-v4.4.7-linux-x64.tar.gz

增加以下配置：

JAVA_HOME=/home/soft/jdk1.8.0_131
JRE_HOME=/home/soft/jdk1.8.0_131/jre
NODE_HOME=/home/niezp/ES/node-v0.10.28-linux-x64
CLASS_PATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar:$JRE_HOME/lib
PATH=$PATH:$JAVA_HOME/bin:$JRE_HOME/bin:$NODE_HOME/bin
NODE_PATH=$NODE_HOME/lib/node_modules

export JAVA_HOME JRE_HOME NODE_PATH CLASS_PATH PATH NODE_PATH 

修改完儲存並

source /etc/profile

這裡遇到了大坑啊，由於ES啟動時不建議用root賬戶的所以我直接用其他的賬戶登入之後修改，但是不讓改沒許可權，然後我就切換到root修改也source 了，但是在切換回其他賬戶的時候

 echo $NODE_HOME

死活是空的，我就納悶了，在看也修改了，這裡就埋下了坑，就直接說解決方案吧，哭死了，必須在用當前賬戶在 source /etc/profile一次才行，在

echo $NODE_HOME

就會輸出配置的資訊，眼淚啊，不熟悉centos的人

安裝grunt

接下來解壓下載的master.zip,進入下載的elasticsearch-head-master,
執行

[root@localnode1 elasticsearch-head-master]#npm install -g grunt-cli 

接下來檢查grunt 安裝是否成功

[root@localnode1 elasticsearch-head]# grunt -version
grunt-cli v1.2.0
grunt v0.4.5

輸出版本說明成功

修改head外掛原始碼：

修改伺服器監聽地址:Gruntfile.js

修改修改連線地址：_site/app.js

在elasticsearch-head-master目錄下

[root@localnode1 elasticsearch-head]# npm install
[root@localnode1 elasticsearch-head]# grunt server

啟動成功就可以訪問127.0.0.1：9100就可以看到如下介面

當然是只有一個節點資訊的，具體介面操作就自行學習吧
最後說下叢集部署

分別拷貝下載的es檔案在三個不同的資料夾下，分別配置config/elasticsearch.yml

例項： ES1資料夾下的配置：

# ======================== 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: 0.0.0.0
#
# 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

# 叢集的名字  必須與其他機器相同
cluster.name: niezp

# 節點名字，必須與其他節點不同
node.name: niezp-slave1

# 修改一下ES的監聽地址，這樣別的機器也可以訪問
network.host: 192.168.174.148

#  不能和其他的節點相同
http.port: 9202
#這裡要說下，這裡的IP地址就是你的mater es的機器ip地址，比如部署在本機可以下127.0.0.1 別的機器就寫別的機器的ip
discovery.zen.ping.unicast.hosts: ["192.168.174.148"]
node.max_local_storage_nodes: 3
# 增加新的引數，這樣head外掛可以訪問es
#http.cors.enabled: true
#http.cors.allow-origin: "*"

例項： ES2資料夾下的配置：

# ======================== 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: 0.0.0.0
#
# 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

# 叢集的名字  必須與其他機器相同
cluster.name: niezp

# 節點名字，必須與其他節點不同
node.name: niezp-slave2

# 修改一下ES的監聽地址，這樣別的機器也可以訪問
network.host: 192.168.174.148

# 不能和其他的節點相同
http.port: 9201
#同例項1說明
discovery.zen.ping.unicast.hosts: ["192.168.174.148"]
node.max_local_storage_nodes: 3
# 增加新的引數，這樣head外掛可以訪問es
#http.cors.enabled: true
#http.cors.allow-origin: "*"

這樣啟動三個節點之後就能在head中看到如下介面

就已經搭建完成了叢集