2.1 Head外掛簡介

ElasticSearch-head是一個H5編寫的ElasticSearch叢集操作和管理工具，可以對叢集進行傻瓜式操作。

• 顯示叢集的拓撲,並且能夠執行索引和節點級別操作
• 搜尋介面能夠查詢叢集中原始json或表格格式的檢索資料
• 能夠快速訪問並顯示叢集的狀態
• 有一個輸入視窗,允許任意呼叫RESTful API。這個介面包含幾個選項,可以組合在一起以產生有趣的結果;
• 5.0版本之前可以通過plugin名安裝，5.0之後可以獨立執行。

2.2 Head外掛安裝

（1）安裝NodeJS

[root@node1 ~]# yum install -y nodejs
 

（2）安裝npm

[root@node1 ~]#  npm install -g cnpm --registry=https://registry.npm.taobao.org

（3）使用npm安裝grunt

[[email protected] ~]# npm install -g grunt
npm WARN deprecated coffee-script@1.10.0: CoffeeScript on NPM has moved to "coffeescript" (no hyphen)
npm WARN gentlyRm not removing /usr/bin/grunt as
 
 it wasn't installed by /usr/lib/node_modules/grunt
/usr/bin/grunt -> /usr/lib/node_modules/grunt/bin/grunt
/usr/lib
└── [email protected]1.0.1 

[[email protected] ~]# 

[root@node1 ~]# npm install -g grunt-cli --registry=https://registry.npm.taobao.org --no-proxy
/usr/bin/grunt -> /usr/lib/node_modules/grunt
 
-cli/bin/grunt
/usr/lib
└─┬ grunt-cli@1.2.0 
  ├─┬ findup-sync@0.3.0 
  │ └─┬ glob@5.0.15 
  │   ├─┬ inflight@1.0.6 
  │   │ └── wrappy@1.0.2 
  │   ├── inherits@2.0.3 
  │   ├─┬ minimatch@3.0.4 
  │   │ └─┬ brace-expansion@1.1.8 
  │   │   ├── balanced-match@1.0.0 
  │   │   └── concat-map@0.0.1 
  │   ├── once@1.4.0 
  │   └── path-is-absolute@1.0.1 
  ├── grunt-known-options@1.1.0 
  ├─┬ nopt@3.0.6 
  │ └── abbrev@1.1.1 
  └── resolve@1.1.7 

[root@node1 ~]# 

（4）版本確認

[es@node1 ~]$ node -v
v6.12.0
[es@node1 ~]$ npm -v
3.10.10
[es@node1 ~]$ grunt -version
grunt-cli v1.2.0
[es@node1 ~]$

（5）下載head外掛原始碼

[[email protected] ~]$ wget https://github.com/mobz/elasticsearch-head/archive/master.zip
--2017-12-18 09:58:08--  https://github.com/mobz/elasticsearch-head/archive/master.zip
Resolving github.com (github.com)... 192.30.255.113, 192.30.255.112
Connecting to github.com (github.com)|192.30.255.113|:443... connected.
HTTP request sent, awaiting response... 302 Found
Location: https://codeload.github.com/mobz/elasticsearch-head/zip/master [following]
--2017-12-18 09:58:09--  https://codeload.github.com/mobz/elasticsearch-head/zip/master
Resolving codeload.github.com (codeload.github.com)... 192.30.255.120, 192.30.255.121
Connecting to codeload.github.com (codeload.github.com)|192.30.255.120|:443... connected.
HTTP request sent, awaiting response... 200 OK
Length: 921421 (900K) [application/zip]
Saving to: ‘master.zip’

100%[===============================================================>] 921,421     9.64KB/s   in 67s    

2017-12-18 09:59:18 (13.4 KB/s) - ‘master.zip’ saved [921421/921421]

[[email protected] ~]$ ls
master.zip
[[email protected] ~]$ unzip master.zip 

（6）下載依賴
進入elasticsearch-head-master目錄，執行下面命令

[es@node1 elasticsearch-head-master]$ npm install

> phantomjs-prebuilt@2.1.16 install /home/es/elasticsearch-head-master/node_modules/phantomjs-prebuilt
> node install.js

PhantomJS not found on PATH
Download already available at /tmp/phantomjs/phantomjs-2.1.1-linux-x86_64.tar.bz2
Verified checksum of previously downloaded file
Extracting tar contents (via spawned process)
Removing /home/es/elasticsearch-head-master/node_modules/phantomjs-prebuilt/lib/phantom
Copying extracted folder /tmp/phantomjs/phantomjs-2.1.1-linux-x86_64.tar.bz2-extract-1515165531727/phantomjs-2.1.1-linux-x86_64 -> /home/es/elasticsearch-head-master/node_modules/phantomjs-prebuilt/lib/phantom
Writing location.js file
Done. Phantomjs binary available at /home/es/elasticsearch-head-master/node_modules/phantomjs-prebuilt/lib/phantom/bin/phantomjs
elasticsearch-head@0.0.0 /home/es/elasticsearch-head-master
└─┬ grunt-contrib-jasmine@1.0.3
  └─┬ grunt-lib-phantomjs@1.1.0
    └── phantomjs-prebuilt@2.1.16 

npm WARN optional SKIPPING OPTIONAL DEPENDENCY: [email protected]^1.0.0 (node_modules/chokidar/node_modules/fsevents):
npm WARN notsup SKIPPING OPTIONAL DEPENDENCY: Unsupported platform for fsevents@1.1.3: wanted {"os":"darwin","arch":"any"} (current: {"os":"linux","arch":"x64"})
npm WARN elasticsearch-head@0.0.0 license should be a valid SPDX license expression
[es@node1 elasticsearch-head-master]$ 

如果上面命令安裝較慢或失敗，可以嘗試國內映象安裝

[es@node1 elasticsearch-head-master]$ sudo npm install -g cnpm --registry=https://registry.npm.taobao.org
[sudo] password for es: 
/usr/bin/cnpm -> /usr/lib/node_modules/cnpm/bin/cnpm
/usr/lib
└─┬ cnpm@5.1.1 
  ├─┬ npminstall@3.3.0 
  │ ├── binary-mirror-config@1.7.3 
  │ ├── moment@2.20.1 
  │ └─┬ tar@4.2.0 
  │   └── minizlib@1.1.0 
  └─┬ urllib@2.25.3 
    └─┬ proxy-agent@2.1.0
      └─┬ pac-proxy-agent@2.0.0
        └─┬ socks-proxy-agent@3.0.1
          └─┬ agent-base@4.1.2
            └─┬ es6-promisify@5.0.0
              └── es6-promise@4.2.2 

[es@node1 elasticsearch-head-master]$ cnpm install
⠸ [6/10] Installing json-schema-traverse@^0.3.0platform unsupported karma@1.3.0 › chokidar@1.7.0 › fsevents@^1.0.0 Package require os(darwin) not compatible with your platform(linux)
[fsevents@^1.0.0] optional install error: Package require os(darwin) not compatible with your platform(linux)
✔ Installed 10 packages
✔ Linked 313 latest versions
PhantomJS not found on PATH
Download already available at /tmp/phantomjs/phantomjs-2.1.1-linux-x86_64.tar.bz2
Verified checksum of previously downloaded file
Extracting tar contents (via spawned process)
Removing /home/es/elasticsearch-head-master/node_modules/_phantomjs-prebuilt@2.1.16@phantomjs-prebuilt/lib/phantom
Copying extracted folder /tmp/phantomjs/phantomjs-2.1.1-linux-x86_64.tar.bz2-extract-1515223629881/phantomjs-2.1.1-linux-x86_64 -> /home/es/elasticsearch-head-master/node_modules/_phantomjs-prebuilt@2.1.16@phantomjs-prebuilt/lib/phantom
Writing location.js file
Done. Phantomjs binary available at /home/es/elasticsearch-head-master/node_modules/_phantomjs-prebuilt@2.1.16@phantomjs-prebuilt/lib/phantom/bin/phantomjs
✔ Run 1 scripts
deprecate grunt-contrib-connect@1.0.2 › http2@^3.3.4 Use the built-in module in node 9.0.0 or newer, instead
deprecate grunt@1.0.1 › coffee-script@~1.10.0 CoffeeScript on NPM has moved to "coffeescript" (no hyphen)
anti semver karma@1.3.0 › useragent@2.2.1 › tmp@0.0.x delcares tmp@0.0.x(resolved as 0.0.33) but using ancestor(karma)'s dependency [email protected](resolved as 0.0.28)
✔ All packages installed (365 packages installed from npm registry, used 17s, speed 497.82kB/s, json 323(581.43kB), tarball 7.64MB)
[[email protected] elasticsearch-head-master]$ 

2.3 配置

（0）停止ElasticSearch
如果ElasticSearch已經啟動，需要先停止

[es@node1 ~]$ jps
3261 Elasticsearch
3375 Jps
[es@node1 ~]$ kill 3261

（1）配置 ElasticSearch，使得HTTP對外提供服務

[es@node1 elasticsearch-6.1.1]$ vi config/elasticsearch.yml

新增如下內容

# 增加新的引數，這樣head外掛可以訪問es。設定引數的時候:後面要有空格
http.cors.enabled: true
http.cors.allow-origin: "*"

（2）修改Head外掛配置檔案

[es@node1 elasticsearch-head-master]$ vi Gruntfile.js

找到connect：server，新增hostname一項，如下

connect: {
                        server: {
                                options: {
                                        hostname: 'node1',
                                        port: 9100,
                                        base: '.',
                                        keepalive: true
                                }
                        }
                }

2.4 啟動

（1）啟動elasticsearch
首先確認elasticsearch已經啟動

[es@node1 elasticsearch-6.1.1]$ bin/elasticsearch -d
[es@node1 elasticsearch-6.1.1]$ jps
3451 Jps
3436 Elasticsearch
[es@node1 elasticsearch-6.1.1]$

（2）啟動head
通過命令grunt server啟動head

[[email protected] elasticsearch-head-master]$ grunt server
Running "connect:server" (connect) task
Waiting forever...
Started connect web server on http://node1:9100

或者通過命令npm run start也可以啟動head

[[email protected] elasticsearch-head-master]$ npm run start

> [email protected]0.0.0 start /home/es/elasticsearch-head-master
> grunt server

Running "connect:server" (connect) task
Waiting forever...
Started connect web server on http://node1:9100

如果出現“未連線”，請修改localhost為node1，然後單擊“連線”按鈕

2.5 簡單應用

（1）建立索引

[root@node1 ~]# curl -XPUT node1:9200/test
{"acknowledged":true,"shards_acknowledged":true,"index":"test"}[root@node1 ~]# 

（2）檢視head變化