Elasticsearch集群是怎么搭建的

Elasticsearch集群是怎么搭建的，針對(duì)這個(gè)問(wèn)題，這篇文章詳細(xì)介紹了相對(duì)應(yīng)的分析和解答，希望可以幫助更多想解決這個(gè)問(wèn)題的小伙伴找到更簡(jiǎn)單易行的方法。

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一：資源

集群： gh-cluster

節(jié)點(diǎn)1：gh-cluster-node-01   10.44.66.2

節(jié)點(diǎn)2：gh-cluster-node-02   10.116.148.103

節(jié)點(diǎn)3：gh-cluster-node-03   10.170.142.108

Elasticsearch:elasticsearch-2.4.4.tar.gz

安裝目錄：/mnt/gh

二：安裝 Elasticsearch

1.創(chuàng)建相關(guān)文件目錄

mkdir -p /mnt/gh/data/logs/elasticsearch
mkdir -p /mnt/gh/data/elasticsearch/{data,work,plugins,scripts}

2.創(chuàng)建新的用戶(hù)

groupadd elsearch
useradd elsearch -g elsearch -p elsearch

3.操作權(quán)限

chown -R elsearch:elsearch /mnt/gh/data/logs/elasticsearch /mnt/gh/data/elasticsearch

4.安裝 Elasticsearch

tar -zxvf elasticsearch-2.4.4.tar.gz

5./etc/security/limits.conf 配置

elsearch soft memlock unlimited
elsearch hard memlock unlimited

6.Elasticsearch 配置

vi /mnt/gh/elasticsearch-2.4.4/config/elasticsearch.yml

點(diǎn)擊(此處)折疊或打開(kāi)

# ======================== 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: gh-cluster
#
# ------------------------------------ Node ------------------------------------
#
# Use a descriptive name for the node:
#
node.name: gh-cluster-node-01
#
# 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: /mnt/gh/data/elasticsearch/data
#
# Path to log files:
#
path.logs : /mnt/gh/data/logs/elasticsearch
path.plugins: /mnt/gh/data/elasticsearch/plugins
path.scripts: /mnt/gh/data/elasticsearch/scripts
#
# ----------------------------------- Memory -----------------------------------
#
# Lock the memory on startup:
#
bootstrap.memory_lock: 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: 10.44.66.2
#
# 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 ----------------------------------
#
# 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.multicast.enabled: false
discovery.zen.ping_timeout: 120s
discovery.zen.fd.ping_timeout: 120s
discovery.zen.ping.unicast.hosts: ["10.44.66.2", "10.116.148.103", "10.170.142.108"]
#
# Prevent the "split brain" by configuring the majority of nodes (total number of nodes / 2 + 1):
#
discovery.zen.minimum_master_nodes: 2
#
# 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
gateway.recover_after_time: 30m
gateway.expected_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

各節(jié)點(diǎn)調(diào)整node-name的配置信息，保證唯一。

四：在節(jié)點(diǎn)1上面安裝Elasticsearch 插件

1.安裝head插件監(jiān)控Elasticsearch的運(yùn)行狀態(tài)以及數(shù)據(jù)

./plugin -DproxyPort=4832 -DproxyHost=10.116.4.116 install mobz/elasticsearch-head

紅色部分因?yàn)槭莾?nèi)網(wǎng)，用了代理訪問(wèn)外網(wǎng)

2.安裝kopf插件 ---ElasticSearch的管理工具

./plugin -DproxyPort=4832 -DproxyHost=10.116.4.116 install lmenezes/elasticsearch-kopf

五：?jiǎn)?dòng)

以elsearch用戶(hù)啟動(dòng)三個(gè)節(jié)點(diǎn)

/mnt/gh/elasticsearch-2.4.4/bin/elasticsearch

六：驗(yàn)證

1.http://10.44.66.2:9200/

{
  "name" : "gh-cluster-node-01",
  "cluster_name" : "gh-cluster",
  "cluster_uuid" : "iGovr8lcSW62JdEABzLMyg",
  "version" : {
    "number" : "2.4.4",
    "build_hash" : "fcbb46dfd45562a9cf00c604b30849a6dec6b017",
    "build_timestamp" : "2017-01-03T11:33:16Z",
    "build_snapshot" : false,
    "lucene_version" : "5.5.2"
  },
  "tagline" : "You Know, for Search"
}

2.head插件 http://10.44.66.2:9200/_plugin/head/

Elasticsearch集群是怎么搭建的

3.kopf插件 http://10.44.66.2:9200/_plugin/kopf/#!/nodes

七：操作命令

1.檢查集群的狀態(tài)
curl '10.44.66.2:9200/_cat/health?v'

2.檢查節(jié)點(diǎn)的信息
curl '10.44.66.2:9200/_cat/nodes?v'

3.檢查索引信息
curl '10.44.66.2:9200/_cat/indices?v'

4.創(chuàng)建索引
curl -XPUT '10.44.66.2:9200/customer?pretty'

5.往索引中，添加文檔
curl -XPUT '10.44.66.2:9200/customer/external/1?pretty' -d '{"name":"John Doe"}'

6.查看文檔信息
curl -XGET '10.44.66.2:9200/customer/external/1?pretty'

7.查看所有文檔數(shù)量
curl -XGET '10.44.66.2:9200/_count?pretty' -d '{"query":{"match_all":{}}}'

8.刪除索引
curl -XDELETE '10.44.66.2:9200/customer?pretty'

9.隨機(jī)創(chuàng)建文檔信息
curl -XPOST '10.44.66.2:9200/customer/external?pretty' -d '{"name":"Geng Chong"}'

一個(gè) Elasticsearch 請(qǐng)求和任何 HTTP 請(qǐng)求一樣由若干相同的部件組成：

curl -X<VERB> '<PROTOCOL>://<HOST>:<PORT>/<PATH>?<QUERY_STRING>' -d '<BODY>'

被 < > 標(biāo)記的部件：

VERB

適當(dāng)?shù)?HTTP 方法或謂詞 : GET`、 `POST`、 `PUT`、 `HEAD 或者 `DELETE`。

PROTOCOL

http 或者 https`（如果你在 Elasticsearch 前面有一個(gè) `https 代理）

HOST

Elasticsearch 集群中任意節(jié)點(diǎn)的主機(jī)名，或者用 localhost 代表本地機(jī)器上的節(jié)點(diǎn)。

PORT

運(yùn)行 Elasticsearch HTTP 服務(wù)的端口號(hào)，默認(rèn)是 9200 。

PATH

API 的終端路徑（例如 _count 將返回集群中文檔數(shù)量）。Path 可能包含多個(gè)組件，例如：_cluster/stats 和 _nodes/stats/jvm 。

QUERY_STRING

任意可選的查詢(xún)字符串參數(shù) (例如 ?pretty 將格式化地輸出 JSON 返回值，使其更容易閱讀)

BODY

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