elasticsearch的安裝部署

環境部署

1.服務器准備：centos7.4系統，Jdk1.8 cat /etc/redhat-release。Es6.x

如果是自帶的openjdk需要先卸載：

rpm -qa|grep java

rpm -e –nodeps *

2.ElasticSearch安裝：我采用的版本為6.6.0 https://elasticsearch.cn/download/

（1）地址：https://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-6.6.0.tar.gz 

（2）解壓：tar -zxvf elasticsearch/elasticsearch-6.6.0.tar.gz

 (3)修改系統配置：

• 設置內核參數 ：vim /etc/sysctl.conf

　　　　　添加如下內容:
                fs.file-max=65536
                vm.max_map_count=262144
            sysctl -p 刷新下配置，

　　　　sysctl -a查看是否生效  ，

如果不成功的(啟動es還是失敗,不是所有人都碰得到，好像是在7.6碰到了)：

　　　　rm -f /sbin/modprobe 


　　　　ln -s /bin/true /sbin/modprobe
　　　　rm -f /sbin/sysctl 

　　　　
ln -s /bin/true /sbin/sysctl

• 設置資源參數
               vi /etc/security/limits.conf
               # 添加一下內容：
               * soft nofile 65536
               * hard nofile 131072
               * soft nproc  2048
              * hard nproc  4096

• 修改進程數
               vi /etc/security/limits.d/20-nproc.conf
                  *          soft    nproc     4096
  配置完成后 要關掉鏈接窗口，重新打開一個
  不能用root用戶啟動

• 修改es配置文件： vim elasticsearch安裝路徑/config/elasticsearch.yml
  # 配置es的集群名稱, es會自動發現在同一網段下的es,如果在同一網段下有多個集群,就可以用這個屬性來區分不同的集群｡
  cluster.name: bi-cluster
  # 節點名稱
  node.name: node-master
  # 存儲數據的目錄
  path.data: /home/elasticsearch/data
  # 存儲日志的目錄
  path.logs: /home/elasticsearch/logs
  # 設置綁定的ip地址還有其它節點和該節點交互的ip地址
  network.host: 0.0.0.0
  # 指定http端口,你使用head､kopf等相關插件使用的端口
  http.port: 9200
  # 設置節點間交互的tcp端口,默認是9300
  transport.tcp.port: 9300
  #設置集群中master節點的初始列表,可以通過這些節點來自動發現新加入集群的節點｡
  discovery.zen.ping.unicast.hosts: ["10.108.4.203:9300", "10.108.4.204:9300", "10.108.4.205:9300"]
  #如果沒有這種設置,遭受網絡故障的集群就有可能將集群分成兩個獨立的集群 - 分裂的大腦 - 這將導致數據丟失
  discovery.zen.minimum_master_nodes: 3
  http.cors.enabled: true        #es5.x版本以上需要，head訪問
  http.cors.allow-origin: "*"
  bootstrap.memory_lock: false    #某些系統需要 是因為centos6.x操作系統不支持SecComp，而elasticsearch 5.5.2默認 bootstrap.system_call_filter為true進行檢測，所以導致檢測失敗，失敗后直接導致ES不能啟動。
  我的配置如下：

  # ======================== Elasticsearch Configuration ====================
  =====
  #
  # NOTE: Elasticsearch comes with reasonable defaults for most settings.
  #       Before you set out to tweak and tune the configuration, make sure y
  ou
  #       understand what are you trying to accomplish and the consequences.
  #
  # The primary way of configuring a node is via this file. This template lis
  ts
  # the most important settings you may want to configure for a production cl
  uster.
  #
  # 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: 192.168.0.1
  #
  # 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 start
  ed:
  # 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 num
  ber of master-eligible nodes / 2 + 1):
  #
  #discovery.zen.minimum_master_nodes: 
  #
  # For more information, consult the zen discovery module documentation.
  #
  # ---------------------------------- Gateway ------------------------------
  -----
  #
  # Block initial recovery after a full cluster restart until N nodes are sta
  rted:
  #
  #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
  cluster.name: my-es
  node.name: node-128
  network.host: 0.0.0.0
  http.port: 19200
  transport.tcp.port: 19300
  #discovery.zen.ping.unicast.hosts: ["127.0.0.1:9300"]
  #discovery.zen.minimum_master_nodes: 3
  http.cors.enabled: true        
  http.cors.allow-origin: "*"
  bootstrap.memory_lock: false    
  bootstrap.system_call_filter: false
  

  　　

• 啟動es：./bin/elasticsearch 后台啟動加 –d參數

• 打開瀏覽器訪問 http://你的ip:19200/查看是否能夠正常訪問,看到以下界面表示啟動ok

  

   

   

    

如果在外網訪問失敗的話，請按照以下步驟執行：

1. 檢查你的elasticsearch.yml配置文件的以下三處是否配置正確

   network.host: 0.0.0.0

   bootstrap.memory_lock: false    
   bootstrap.system_call_filter: false

2. 檢查防火牆是否關閉（需要關閉防火牆外網才可以訪問）
   

   開啟、重啟、關閉、firewalld.service服務

   # 開啟
   service firewalld start
   # 重啟
   service firewalld restart
   # 關閉
   service firewalld stop
   查看防火牆規則：

   firewall-cmd --list-all
   查詢、開放、關閉端口：

   # 查詢端口是否開放
   firewall-cmd --query-port=8080/tcp
   # 開放80端口
   firewall-cmd --permanent --add-port=80/tcp
   # 移除端口
   firewall-cmd --permanent --remove-port=8080/tcp
   #重啟防火牆(修改配置后要重啟防火牆)
   firewall-cmd --reload

   執行以上步驟之后就可以在外網訪問了。以下是我遇到的啟動錯誤的問題以及解決辦法：
3. （1）max file descriptors [4096] for elasticsearch process is too low, increase to at least [65536]
   
   　每個進程最大同時打開文件數太小，可通過下面2個命令查看當前數量

4. ulimit -Hn
   ulimit -Sn

   　　修改/etc/security/limits.conf文件，增加配置，用戶退出后重新登錄生效

   *               soft    nofile          65536
   *               hard    nofile          65536

   

    

   （2）max number of threads [3818] for user [es] is too low, increase to at least [4096]

   　　問題同上，最大線程個數太低。修改配置文件/etc/security/limits.conf（和問題1是一個文件），增加配置

   *               soft    nproc           4096
   *               hard    nproc           4096

   　　可通過命令查看

   ulimit -Hu
   ulimit -Su

   

   修改后的文件：

   

    如果更改后發現ulimit -Su 的結果沒有變化的話，此時需要在這個文件中添加如下信息：(admin是我自己的用戶名稱，可以根據自己的實際用戶更改)

   admin - nproc 4096

   

    

    

    

5. max virtual memory areas vm.max_map_count [65530] is too low, increase to at least [262144]

   　　修改/etc/sysctl.conf文件，增加配置vm.max_map_count=262144

   vi /etc/sysctl.conf
   sysctl -p

   　　執行命令sysctl -p生效

   

    4、Exception in thread "main" java.nio.file.AccessDeniedException: /usr/local/elasticsearch/elasticsearch-6.2.2-1/config/jvm.options

   　　elasticsearch用戶沒有該文件夾的權限，執行命令

   chown -R es:es /usr/local/elasticsearch/

安裝kibana：

1、將下載的kibana安裝包解壓： tar -zxvf kibana-6.6.0-linux-x86_64.tar.gz

2、更改kibana的配置

# Kibana is served by a back end server. This setting specifies the port to
 use.
server.port: 15601

# Specifies the address to which the Kibana server will bind. IP addresses 
and host names are both valid values.
# The default is 'localhost', which usually means remote machines will not 
be able to connect.
# To allow connections from remote users, set this parameter to a non-loopb
ack address.
#server.host: "localhost"
server.host: "0.0.0.0"


# Enables you to specify a path to mount Kibana at if you are running behin
d a proxy.
# Use the `server.rewriteBasePath` setting to tell Kibana if it should remo
ve the basePath
# from requests it receives, and to prevent a deprecation warning at startu
p.
# This setting cannot end in a slash.
#server.basePath: ""

# Specifies whether Kibana should rewrite requests that are prefixed with
# `server.basePath` or require that they are rewritten by your reverse prox
y.
# This setting was effectively always `false` before Kibana 6.3 and will
# default to `true` starting in Kibana 7.0.
#server.rewriteBasePath: false

# The maximum payload size in bytes for incoming server requests.
#server.maxPayloadBytes: 1048576

# The Kibana server's name.  This is used for display purposes.
#server.name: "your-hostname"

# The URLs of the Elasticsearch instances to use for all your queries.
#elasticsearch.hosts: ["http://localhost:9200"]
elasticsearch.hosts: ["http://localhost:19200"]


# When this setting's value is true Kibana uses the hostname specified in t
he server.host
# setting. When the value of this setting is false, Kibana uses the hostnam
e of the host
# that connects to this Kibana instance.
#elasticsearch.preserveHost: true

# Kibana uses an index in Elasticsearch to store saved searches, visualizat
ions and
# dashboards. Kibana creates a new index if the index doesn't already exist
.
#kibana.index: ".kibana"

# The default application to load.
#kibana.defaultAppId: "home"

# If your Elasticsearch is protected with basic authentication, these setti
ngs provide
# the username and password that the Kibana server uses to perform maintena
nce on the Kibana
# index at startup. Your Kibana users still need to authenticate with Elast
icsearch, which
# is proxied through the Kibana server.
#elasticsearch.username: "user"
#elasticsearch.password: "pass"

# Enables SSL and paths to the PEM-format SSL certificate and SSL key files
, respectively.
# These settings enable SSL for outgoing requests from the Kibana server to
 the browser.
#server.ssl.enabled: false
#server.ssl.certificate: /path/to/your/server.crt
#server.ssl.key: /path/to/your/server.key

# Optional settings that provide the paths to the PEM-format SSL certificat
e and key files.
# These files validate that your Elasticsearch backend uses the same key fi
les.
#elasticsearch.ssl.certificate: /path/to/your/client.crt
#elasticsearch.ssl.key: /path/to/your/client.key

# Optional setting that enables you to specify a path to the PEM file for t
he certificate
# authority for your Elasticsearch instance.
#elasticsearch.ssl.certificateAuthorities: [ "/path/to/your/CA.pem" ]

# To disregard the validity of SSL certificates, change this setting's valu
e to 'none'.
#elasticsearch.ssl.verificationMode: full

# Time in milliseconds to wait for Elasticsearch to respond to pings. Defau
lts to the value of
# the elasticsearch.requestTimeout setting.
#elasticsearch.pingTimeout: 1500

# Time in milliseconds to wait for responses from the back end or Elasticse
arch. This value
# must be a positive integer.
#elasticsearch.requestTimeout: 30000

# List of Kibana client-side headers to send to Elasticsearch. To send *no*
 client-side
# headers, set this value to [] (an empty list).
#elasticsearch.requestHeadersWhitelist: [ authorization ]

# Header names and values that are sent to Elasticsearch. Any custom header
s cannot be overwritten
# by client-side headers, regardless of the elasticsearch.requestHeadersWhi
telist configuration.
#elasticsearch.customHeaders: {}

# Time in milliseconds for Elasticsearch to wait for responses from shards.
 Set to 0 to disable.
#elasticsearch.shardTimeout: 30000

# Time in milliseconds to wait for Elasticsearch at Kibana startup before r
etrying.
#elasticsearch.startupTimeout: 5000

[admin@localhost kibana-6.6.0-linux-x86_64]$ cat config/kibana.yml         
# Kibana is served by a back end server. This setting specifies the port to
 use.                                                                      
server.port: 15601                                                         
                                                                           
# Specifies the address to which the Kibana server will bind. IP addresses 
and host names are both valid values.                                      
# The default is 'localhost', which usually means remote machines will not 
be able to connect.                                                        
# To allow connections from remote users, set this parameter to a non-loopb
ack address.                                                               
#server.host: "localhost"                                                  
server.host: "0.0.0.0"                                                     
                                                                           
                                                                           
# Enables you to specify a path to mount Kibana at if you are running behin
d a proxy.                                                                 
# Use the `server.rewriteBasePath` setting to tell Kibana if it should remo
ve the basePath                                                            
# from requests it receives, and to prevent a deprecation warning at startu
p.                                                                         
# This setting cannot end in a slash.                                      
#server.basePath: ""                                                       
                                                                           
# Specifies whether Kibana should rewrite requests that are prefixed with  
# `server.basePath` or require that they are rewritten by your reverse prox
y.                                                                         
# This setting was effectively always `false` before Kibana 6.3 and will   
# default to `true` starting in Kibana 7.0.                                
#server.rewriteBasePath: false                                             

# The maximum payload size in bytes for incoming server requests.
#server.maxPayloadBytes: 1048576

# The Kibana server's name.  This is used for display purposes.
#server.name: "your-hostname"

# The URLs of the Elasticsearch instances to use for all your queries.
#elasticsearch.hosts: ["http://localhost:9200"]
elasticsearch.hosts: ["http://localhost:19200"]


# When this setting's value is true Kibana uses the hostname specified in t
he server.host
# setting. When the value of this setting is false, Kibana uses the hostnam
e of the host
# that connects to this Kibana instance.
#elasticsearch.preserveHost: true

# Kibana uses an index in Elasticsearch to store saved searches, visualizat
ions and
# dashboards. Kibana creates a new index if the index doesn't already exist
.
#kibana.index: ".kibana"

# The default application to load.
#kibana.defaultAppId: "home"

# If your Elasticsearch is protected with basic authentication, these setti
ngs provide
# the username and password that the Kibana server uses to perform maintena
nce on the Kibana
# index at startup. Your Kibana users still need to authenticate with Elast
icsearch, which
# is proxied through the Kibana server.
#elasticsearch.username: "user"
#elasticsearch.password: "pass"

# Enables SSL and paths to the PEM-format SSL certificate and SSL key files
, respectively.
# These settings enable SSL for outgoing requests from the Kibana server to
 the browser.
#server.ssl.enabled: false
#server.ssl.certificate: /path/to/your/server.crt
#server.ssl.key: /path/to/your/server.key

# Optional settings that provide the paths to the PEM-format SSL certificat
e and key files.
# These files validate that your Elasticsearch backend uses the same key fi
les.
#elasticsearch.ssl.certificate: /path/to/your/client.crt
#elasticsearch.ssl.key: /path/to/your/client.key

# Optional setting that enables you to specify a path to the PEM file for t
he certificate
# authority for your Elasticsearch instance.
#elasticsearch.ssl.certificateAuthorities: [ "/path/to/your/CA.pem" ]

# To disregard the validity of SSL certificates, change this setting's valu
e to 'none'.
#elasticsearch.ssl.verificationMode: full

# Time in milliseconds to wait for Elasticsearch to respond to pings. Defau
lts to the value of
# the elasticsearch.requestTimeout setting.
#elasticsearch.pingTimeout: 1500

# Time in milliseconds to wait for responses from the back end or Elasticse
arch. This value
# must be a positive integer.
#elasticsearch.requestTimeout: 30000

# List of Kibana client-side headers to send to Elasticsearch. To send *no*
 client-side
# headers, set this value to [] (an empty list).
#elasticsearch.requestHeadersWhitelist: [ authorization ]

# Header names and values that are sent to Elasticsearch. Any custom header
s cannot be overwritten
# by client-side headers, regardless of the elasticsearch.requestHeadersWhi
telist configuration.
#elasticsearch.customHeaders: {}

# Time in milliseconds for Elasticsearch to wait for responses from shards.
 Set to 0 to disable.
#elasticsearch.shardTimeout: 30000

# Time in milliseconds to wait for Elasticsearch at Kibana startup before r
etrying.
#elasticsearch.startupTimeout: 5000

# Logs queries sent to Elasticsearch. Requires logging.verbose set to true.
#elasticsearch.logQueries: false

# Specifies the path where Kibana creates the process ID file.
#pid.file: /var/run/kibana.pid

# Enables you specify a file where Kibana stores log output.
#logging.dest: stdout

# Set the value of this setting to true to suppress all logging output.
#logging.silent: false

# Set the value of this setting to true to suppress all logging output othe
r than error messages.
#logging.quiet: false

# Set the value of this setting to true to log all events, including system
 usage information
# and all requests.
#logging.verbose: false

# Set the interval in milliseconds to sample system and process performance
# metrics. Minimum is 100ms. Defaults to 5000.
#ops.interval: 5000

# Specifies locale to be used for all localizable strings, dates and number
 formats.
#i18n.locale: "en"

3、啟動kibana:  ./bin/kibana

 

 4、外網通過ip地址訪問：

 

 

注意兩個點：
（1）修改啟動的es鏈接地址
（2）修改地址綁定不然只有本地才能訪問

（3）kibana的版本和elasticsearch的版本必須一致，比如都是6.6

elasticsearch集群搭建：

1、將以上安裝成功的elastic解壓包拷貝一份，重新命名為XXXX-node；

 

 

 2、將elasticsearch-6.6.0里面的配置文件打開，elasticsearch.yml,修改以下標記內容

# ======================== 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 l
ists
# the most important settings you may want to configure for a production 
cluster.
#
# Please consult the documentation for further information on configurati
on 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: 192.168.0.1
#
# 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 sta
rted:
# 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 n
umber of master-eligible nodes / 2 + 1):
#
#discovery.zen.minimum_master_nodes: 
#
# For more information, consult the zen discovery module documentation.
#
# ---------------------------------- Gateway ----------------------------
-------
#
# Block initial recovery after a full cluster restart until N nodes are s
tarted:
#
#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
cluster.name: my-es
node.name: node-128
network.host: 0.0.0.0
http.port: 19200
transport.tcp.port: 19300
discovery.zen.ping.unicast.hosts: ["127.0.0.1:19300","127.0.0.1:29300"]
#discovery.zen.minimum_master_nodes: 3
http.cors.enabled: true        
http.cors.allow-origin: "*"
bootstrap.memory_lock: false    
bootstrap.system_call_filter: false

3、修改好以后打開拷貝的那個elasticsearch_node1,也打開該文件，修改：

# ======================== 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 l
ists
# the most important settings you may want to configure for a production 
cluster.
#
# Please consult the documentation for further information on configurati
on 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: 192.168.0.1
#
# 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 sta
rted:
# 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 n
umber of master-eligible nodes / 2 + 1):
#
#discovery.zen.minimum_master_nodes: 
#
# For more information, consult the zen discovery module documentation.
#
# ---------------------------------- Gateway ----------------------------
-------
#
# Block initial recovery after a full cluster restart until N nodes are s
tarted:
#
#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
cluster.name: my-es
node.name: node-128-1
network.host: 0.0.0.0
http.port: 29200
transport.tcp.port: 29300
discovery.zen.ping.unicast.hosts: ["127.0.0.1:19300","127.0.0.1:29300"]
#discovery.zen.minimum_master_nodes: 3
http.cors.enabled: true        
http.cors.allow-origin: "*"
bootstrap.memory_lock: false    
bootstrap.system_call_filter: false

4、刪除node1文件路徑下data文件夾下的所有東西，因為這些是從原來的那里拷貝過來的，有問題：

  cd elasticsearch_node1/data(你自己節點的路徑)

 rm -rf *

5、然后啟動兩個節點就可以了，集群就搭建好了。

注意：我是在一台虛擬機上搭建的，所以ip地址一樣，端口不一樣，如果是不同的虛擬機的話ip地址不一樣，端口可以一樣

指南：https://www.elastic.co/guide/cn/elasticsearch/guide/cn/index.html