参考文档

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https://blog.csdn.net/u012731379/article/details/79856113 
https://blog.csdn.net/u010466329/article/details/79209236 
https://blog.csdn.net/laoyang360/article/details/65449407

迁移方法

  • 通过logstash的input和output配置迁移（配置灵活适用于长期数据同步等）
  • 通过迁移工具如elasticdump等（适用于备份一次性小量数据操作）
  • 通过elasticsarch自带快照功能（适用于一次性迁移大量数据）

操作步骤

1、安装elasticdump

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[root@VM_8_24_centos ~]# yum install nodejs npm  
[root@VM_8_24_centos ~]# npm install elasticdump 
/root
└─┬ elasticdump@4.4.0 
  ├── async@2.6.1 
  ├─┬ aws-sdk@2.400.0 
  │ ├─┬ buffer@4.9.1 
  │ │ ├── base64-js@1.3.0 
  │ │ └── isarray@1.0.0 
  │ ├── events@1.1.1 
  │ ├── ieee754@1.1.8 
  │ ├── jmespath@0.15.0 
  │ ├── querystring@0.2.0 
  │ ├── sax@1.2.1 
  │ ├─┬ url@0.10.3 
  │ │ └── punycode@1.3.2 
  │ ├── uuid@3.3.2 
  │ └─┬ xml2js@0.4.19 
  │   └── xmlbuilder@9.0.7 
  ├── aws4@1.8.0 
  ├── bytes@3.1.0 
  ├── decimal.js@10.0.2 
  ├── ini@1.3.5 
  ├─┬ JSONStream@1.3.5 
  │ ├── jsonparse@1.3.1 
  │ └── through@2.3.8 
  ├── lodash@4.17.11 
  ├── lossless-json@1.0.3 
  ├─┬ optimist@0.6.1 
  │ ├── minimist@0.0.10 
  │ └── wordwrap@0.0.3 
  ├─┬ request@2.88.0 
  │ ├── aws-sign2@0.7.0 
  │ ├── caseless@0.12.0 
  │ ├─┬ combined-stream@1.0.7 
  │ │ └── delayed-stream@1.0.0 
  │ ├── extend@3.0.2 
  │ ├── forever-agent@0.6.1 
  │ ├─┬ form-data@2.3.3 
  │ │ └── asynckit@0.4.0 
  │ ├─┬ har-validator@5.1.3 
  │ │ ├─┬ ajv@6.9.1 
  │ │ │ ├── fast-deep-equal@2.0.1 
  │ │ │ ├── fast-json-stable-stringify@2.0.0 
  │ │ │ ├── json-schema-traverse@0.4.1 
  │ │ │ └─┬ uri-js@4.2.2 
  │ │ │   └── punycode@2.1.1 
  │ │ └── har-schema@2.0.0 
  │ ├─┬ http-signature@1.2.0 
  │ │ ├── assert-plus@1.0.0 
  │ │ ├─┬ jsprim@1.4.1 
  │ │ │ ├── extsprintf@1.3.0 
  │ │ │ ├── json-schema@0.2.3 
  │ │ │ └── verror@1.10.0 
  │ │ └─┬ sshpk@1.16.1 
  │ │   ├── asn1@0.2.4 
  │ │   ├── bcrypt-pbkdf@1.0.2 
  │ │   ├── dashdash@1.14.1 
  │ │   ├── ecc-jsbn@0.1.2 
  │ │   ├── getpass@0.1.7 
  │ │   ├── jsbn@0.1.1 
  │ │   ├── safer-buffer@2.1.2 
  │ │   └── tweetnacl@0.14.5 
  │ ├── is-typedarray@1.0.0 
  │ ├── isstream@0.1.2 
  │ ├── json-stringify-safe@5.0.1 
  │ ├─┬ mime-types@2.1.21 
  │ │ └── mime-db@1.37.0 
  │ ├── oauth-sign@0.9.0 
  │ ├── performance-now@2.1.0 
  │ ├── qs@6.5.2 
  │ ├── safe-buffer@5.1.2 
  │ ├─┬ tough-cookie@2.4.3 
  │ │ ├── psl@1.1.31 
  │ │ └── punycode@1.4.1 
  │ └── tunnel-agent@0.6.0 
  ├─┬ requestretry@3.1.0 
  │ └── when@3.7.8 
  └─┬ s3-stream-upload@2.0.2 
    ├── buffer-queue@1.0.0 
    └─┬ readable-stream@2.3.6 
      ├── core-util-is@1.0.2 
      ├── inherits@2.0.3 
      ├── process-nextick-args@2.0.0 
      ├── string_decoder@1.1.1 
      └── util-deprecate@1.0.2 

npm WARN enoent ENOENT: no such file or directory, open '/root/package.json'
npm WARN root No description
npm WARN root No repository field.
npm WARN root No README data
npm WARN root No license field.
[root@VM_8_24_centos ~]# cd node_modules/elasticdump/bin

2、导出mapping

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[root@VM_8_24_centos bin]# ./elasticdump --input=http://10.2.3.159:9200/reconciliation  --output=http://10.2.100.24:9200/reconciliationonline --type=mapping
Mon, 11 Feb 2019 09:28:10 GMT | starting dump
Mon, 11 Feb 2019 09:28:10 GMT | got 1 objects from source elasticsearch (offset: 0)
Mon, 11 Feb 2019 09:28:16 GMT | sent 1 objects to destination elasticsearch, wrote 1
Mon, 11 Feb 2019 09:28:16 GMT | got 0 objects from source elasticsearch (offset: 1)
Mon, 11 Feb 2019 09:28:16 GMT | Total Writes: 1
Mon, 11 Feb 2019 09:28:16 GMT | dump complete
[root@VM_8_24_centos bin]# curl  10.2.100.24:9200/_cat/indices|grep reconciliation
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
 43 32578   43 14037    0     0   5694      0  0:00:05  0:00:02  0:00:03  5694yellow open reconciliationonline   KnZrsU-7TmWWBs-1-dBRrw 5 1       0  0    1.1kb    1.1kb

3、导出data

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[root@VM_8_24_centos bin]# ./elasticdump --input=http://10.2.3.159:9200/reconciliation  --output=http://10.2.100.24:9200/reconciliationonline --type=data
Mon, 11 Feb 2019 09:28:58 GMT | starting dump
Mon, 11 Feb 2019 09:28:58 GMT | got 100 objects from source elasticsearch (offset: 0)
Mon, 11 Feb 2019 09:29:19 GMT | sent 100 objects to destination elasticsearch, wrote 100
Mon, 11 Feb 2019 09:29:19 GMT | got 100 objects from source elasticsearch (offset: 100)
Mon, 11 Feb 2019 09:29:51 GMT | sent 100 objects to destination elasticsearch, wrote 100
Mon, 11 Feb 2019 09:29:51 GMT | got 100 objects from source elasticsearch (offset: 200)
Mon, 11 Feb 2019 09:30:13 GMT | sent 100 objects to destination elasticsearch, wrote 100
Mon, 11 Feb 2019 09:30:13 GMT | got 100 objects from source elasticsearch (offset: 300)
Mon, 11 Feb 2019 09:30:39 GMT | sent 100 objects to destination elasticsearch, wrote 100
Mon, 11 Feb 2019 09:30:39 GMT | got 100 objects from source elasticsearch (offset: 400)
Mon, 11 Feb 2019 09:31:53 GMT | sent 100 objects to destination elasticsearch, wrote 100
Mon, 11 Feb 2019 09:31:53 GMT | got 100 objects from source elasticsearch (offset: 500)
Mon, 11 Feb 2019 09:32:28 GMT | sent 100 objects to destination elasticsearch, wrote 100
Mon, 11 Feb 2019 09:32:28 GMT | got 100 objects from source elasticsearch (offset: 600)
Mon, 11 Feb 2019 09:33:24 GMT | sent 100 objects to destination elasticsearch, wrote 100
Mon, 11 Feb 2019 09:33:24 GMT | got 100 objects from source elasticsearch (offset: 700)
Mon, 11 Feb 2019 09:34:19 GMT | sent 100 objects to destination elasticsearch, wrote 100
Mon, 11 Feb 2019 09:34:19 GMT | got 7 objects from source elasticsearch (offset: 800)
Mon, 11 Feb 2019 09:34:47 GMT | sent 7 objects to destination elasticsearch, wrote 7
Mon, 11 Feb 2019 09:34:47 GMT | got 0 objects from source elasticsearch (offset: 807)
Mon, 11 Feb 2019 09:34:47 GMT | Total Writes: 807
Mon, 11 Feb 2019 09:34:47 GMT | dump complete
[root@VM_8_24_centos bin]# curl  10.2.100.24:9200/_cat/indices|grep reconciliationonline
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
  0     0    0     0    0     0      0      0 --:--:-- 0:00:16 --:--:-- 0yellow open reconciliationonline   KnZrsU-7TmWWBs-1-dBRrw 5 1     807  0    4.3mb    4.3mb
100 32578  100 32578    0     0   2010      0  0:00:16  0:00:16 --:--:-- 7769