elasticdump安装_使用elasticsearch-dump迁移elasticsearch集群数据

林鹏鹍
2023-12-01

缘起

最近某个5节点es集群发现其中1个主节点(被选中master)cpu负载很高,其中3节点master角色,所有节点默认data角色,初步操作重启这个主节点,使其角色变更减少压力,发现不起作用。

后来使用Cerebro分析发现其中有个geo_infomation信息索引只有一个分片,且大小超过20G,默认单分片在SSD盘中大小最好不超过20G,HDD盘中大小最好不超过10G时性能最佳,这里分片不均衡导致集群压力分配不均。

所以现在需要改变geo_information的索引分片信息,由于不可变更已经生成索引的分片信息,所以只能新建一个索引(默认5分片),然后迁移索引mapping和data数据,这里使用elasticsearch-dump实现。

[root@VM-88-87-centos bin]# curl 192.168.88.87:9200/_cat/nodes

192.168.88.39 27 88 4 0.33 0.30 0.26 dim - es-39

192.168.88.135 72 99 99 18.33 18.52 18.45 di - es-135

192.168.88.40 32 99 98 21.67 21.03 20.73 dim - es-40

192.168.88.33 49 94 3 0.41 0.34 0.27 dim * es-33

192.168.88.87 35 95 0 0.01 0.04 0.08 di - es-87

操作步骤

1、安装node环境

[root@VM-88-87-centos ~]# wget https://cdn.npm.taobao.org/dist/node/v14.12.0/node-v14.12.0-linux-x64.tar.xz

[root@VM-88-87-centos ~]# xz -d node-v14.12.0-linux-x64.tar.xz

[root@VM-88-87-centos ~]# tar -xvf node-v14.12.0-linux-x64.tar -C /usr/local/

[root@VM-88-87-centos ~]# cd /usr/local/

[root@VM-88-87-centos local]# ln -s node-v14.12.0-linux-x64 node

[root@VM-88-87-centos local]# vim /etc/profile

export JAVA_HOME=/usr/local/jdk

export CLASSPATH=.:${JAVA_HOME}/jre/lib/rt.jar:${JAVA_HOME}/lib/dt.jar:${JAVA_HOME}/lib/tools.jar

export NODE_HOME=/usr/local/node

export NODE_PATH=$NODE_HOME/lib/node_modules

export PATH=$PATH:${JAVA_HOME}/bin:$NODE_HOME/bin

[root@VM-88-87-centos local]# source /etc/profile

[root@VM-88-87-centos local]# node -v

v14.12.0

[root@VM-88-87-centos local]# npm -v

6.14.8

2、安装elasticsearch-dump

[root@VM-88-87-centos ~]# wget https://codeload.github.com/elasticsearch-dump/elasticsearch-dump/tar.gz/v6.33.4

[root@VM-88-87-centos ~]# tar zxvf v6.33.4

[root@VM-88-87-centos ~]# cd elasticsearch-dump-6.33.4/

[root@VM-88-87-centos elasticsearch-dump-6.33.4]# ls

bin Dockerfile LICENSE.txt test

docker-compose-test-helper.yml elasticdump.jpg node_modules transforms

docker-compose.yml elasticdump.js package.json

docker-entrypoint.sh lib README.md

[root@VM-88-87-centos elasticsearch-dump-6.33.4]# cd bin/

依次安装依赖

p-queue delay ini s3urls lodash requestretry request lossless-json big.js aws4 aws-sdk async socks5-http-client socks5-https-client bytes JSONStream s3-stream-upload http-status

[root@VM-88-87-centos bin]# ./elasticdump --input=http://192.168.88.87:9200/geo_information --output=http://192.168.88.87:9200/geo_information_new --type=mapping

internal/modules/cjs/loader.js:896

throw err;

^

Error: Cannot find module 'p-queue'

Require stack:

- /root/elasticsearch-dump-6.33.4/lib/processor.js

- /root/elasticsearch-dump-6.33.4/elasticdump.js

- /root/elasticsearch-dump-6.33.4/bin/elasticdump

at Function.Module._resolveFilename (internal/modules/cjs/loader.js:893:15)

at Function.Module._load (internal/modules/cjs/loader.js:743:27)

at Module.require (internal/modules/cjs/loader.js:965:19)

at require (internal/modules/cjs/helpers.js:88:18)

at Object. (/root/elasticsearch-dump-6.33.4/lib/processor.js:2:29)

at Module._compile (internal/modules/cjs/loader.js:1076:30)

at Object.Module._extensions..js (internal/modules/cjs/loader.js:1097:10)

at Module.load (internal/modules/cjs/loader.js:941:32)

at Function.Module._load (internal/modules/cjs/loader.js:782:14)

at Module.require (internal/modules/cjs/loader.js:965:19) {

code: 'MODULE_NOT_FOUND',

requireStack: [

'/root/elasticsearch-dump-6.33.4/lib/processor.js',

'/root/elasticsearch-dump-6.33.4/elasticdump.js',

'/root/elasticsearch-dump-6.33.4/bin/elasticdump'

]

}

[root@VM-88-87-centos bin]# npm install p-queue

npm notice created a lockfile as package-lock.json. You should commit this file.

+ p-queue@6.6.1

added 4 packages from 2 contributors and audited 5 packages in 5.154s

1 package is looking for funding

run `npm fund` for details

found 0 vulnerabilities

最终npm模块依赖如下

[root@VM-88-87-centos bin]# npm list

elasticdump@6.33.4 /root/elasticsearch-dump-6.33.4

├─┬ async@2.6.3

│ └── lodash@4.17.20 deduped

├─┬ aws-sdk@2.761.0

│ ├─┬ buffer@4.9.2

│ │ ├── base64-js@1.3.1

│ │ ├── ieee754@1.1.13 deduped

│ │ └── isarray@1.0.0

│ ├── events@1.1.1

│ ├── ieee754@1.1.13

│ ├── jmespath@0.15.0

│ ├── querystring@0.2.0

│ ├── sax@1.2.1

│ ├─┬ url@0.10.3

│ │ ├── punycode@1.3.2

│ │ └── querystring@0.2.0 deduped

│ ├── uuid@3.3.2

│ └─┬ xml2js@0.4.19

│ ├── sax@1.2.1 deduped

│ └── xmlbuilder@9.0.7

├── aws4@1.10.1

├── big.js@5.2.2

├── bytes@3.1.0

├── delay@4.4.0

├── http-status@1.4.2

├── ini@1.3.5

├─┬ JSONStream@1.3.5

│ ├── jsonparse@1.3.1

│ └── through@2.3.8

├── lodash@4.17.20

├── lossless-json@1.0.4

├── minimist@1.2.5

├─┬ p-queue@6.6.1

│ ├── eventemitter3@4.0.7

│ └─┬ p-timeout@3.2.0

│ └── p-finally@1.0.0

├─┬ request@2.88.2

│ ├── aws-sign2@0.7.0

│ ├── aws4@1.10.1

│ ├── caseless@0.12.0

│ ├─┬ combined-stream@1.0.8

│ │ └── delayed-stream@1.0.0

│ ├── extend@3.0.2

│ ├── forever-agent@0.6.1

│ ├─┬ form-data@2.3.3

│ │ ├── asynckit@0.4.0

│ │ ├── combined-stream@1.0.8 deduped

│ │ └── mime-types@2.1.27 deduped

│ ├─┬ har-validator@5.1.5

│ │ ├─┬ ajv@6.12.5

│ │ │ ├── fast-deep-equal@3.1.3

│ │ │ ├── fast-json-stable-stringify@2.1.0

│ │ │ ├── json-schema-traverse@0.4.1

│ │ │ └─┬ uri-js@4.4.0

│ │ │ └── punycode@2.1.1

│ │ └── har-schema@2.0.0

│ ├─┬ http-signature@1.2.0

│ │ ├── assert-plus@1.0.0

│ │ ├─┬ jsprim@1.4.1

│ │ │ ├── assert-plus@1.0.0 deduped

│ │ │ ├── extsprintf@1.3.0

│ │ │ ├── json-schema@0.2.3

│ │ │ └─┬ verror@1.10.0

│ │ │ ├── assert-plus@1.0.0 deduped

│ │ │ ├── core-util-is@1.0.2 deduped

│ │ │ └── extsprintf@1.3.0 deduped

│ │ └─┬ sshpk@1.16.1

│ │ ├─┬ asn1@0.2.4

│ │ │ └── safer-buffer@2.1.2 deduped

│ │ ├── assert-plus@1.0.0 deduped

│ │ ├─┬ bcrypt-pbkdf@1.0.2

│ │ │ └── tweetnacl@0.14.5 deduped

│ │ ├─┬ dashdash@1.14.1

│ │ │ └── assert-plus@1.0.0 deduped

│ │ ├─┬ ecc-jsbn@0.1.2

│ │ │ ├── jsbn@0.1.1 deduped

│ │ │ └── safer-buffer@2.1.2 deduped

│ │ ├─┬ getpass@0.1.7

│ │ │ └── assert-plus@1.0.0 deduped

│ │ ├── 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@2.1.27

│ │ └── mime-db@1.44.0

│ ├── oauth-sign@0.9.0

│ ├── performance-now@2.1.0

│ ├── qs@6.5.2

│ ├── safe-buffer@5.2.1

│ ├─┬ tough-cookie@2.5.0

│ │ ├── psl@1.8.0

│ │ └── punycode@2.1.1

│ ├─┬ tunnel-agent@0.6.0

│ │ └── safe-buffer@5.2.1 deduped

│ └── uuid@3.3.2 deduped

├─┬ requestretry@4.1.1

│ ├── extend@3.0.2 deduped

│ ├── lodash@4.17.20 deduped

│ └── when@3.7.8

├─┬ s3-stream-upload@2.0.2

│ ├── buffer-queue@1.0.0

│ └─┬ readable-stream@2.3.7

│ ├── core-util-is@1.0.2

│ ├── inherits@2.0.4

│ ├── isarray@1.0.0 deduped

│ ├── process-nextick-args@2.0.1

│ ├── safe-buffer@5.1.2

│ ├─┬ string_decoder@1.1.1

│ │ └── safe-buffer@5.1.2

│ └── util-deprecate@1.0.2

├─┬ s3urls@1.5.2

│ ├── minimist@1.2.5 deduped

│ └─┬ s3signed@0.1.0

│ └─┬ aws-sdk@2.761.0

│ ├── buffer@4.9.2 deduped

│ ├── events@1.1.1 deduped

│ ├── ieee754@1.1.13 deduped

│ ├── jmespath@0.15.0 deduped

│ ├── querystring@0.2.0 deduped

│ ├── sax@1.2.1 deduped

│ ├── url@0.10.3 deduped

│ ├── uuid@3.3.2 deduped

│ └── xml2js@0.4.19 deduped

├─┬ socks5-http-client@1.0.4

│ └─┬ socks5-client@1.2.8

│ └─┬ ip-address@6.1.0

│ ├── jsbn@1.1.0

│ ├── lodash@4.17.20 deduped

│ └── sprintf-js@1.1.2

└─┬ socks5-https-client@1.2.1

└── socks5-client@1.2.8 deduped

3、数据迁移

由于setting里面的index分片信息是不同的,所以新index默认创建即可,不需要迁移setting配置

mapping迁移

[root@VM-88-87-centos bin]# ./elasticdump --input=http://192.168.88.87:9200/geo_information --output=http://192.168.88.87:9200/geo_information_new --type=mapping

Sun, 27 Sep 2020 02:45:24 GMT | starting dump

Sun, 27 Sep 2020 02:45:24 GMT | got 1 objects from source elasticsearch (offset: 0)

Sun, 27 Sep 2020 02:45:25 GMT | sent 1 objects to destination elasticsearch, wrote 1

Sun, 27 Sep 2020 02:45:25 GMT | got 0 objects from source elasticsearch (offset: 1)

Sun, 27 Sep 2020 02:45:25 GMT | Total Writes: 1

Sun, 27 Sep 2020 02:45:25 GMT | dump complete

data迁移

20G数据大概用了1小时

[root@VM-88-87-centos bin]# ./elasticdump --input=http://192.168.88.87:9200/geo_information --output=http://192.168.88.87:9200/geo_information_new --limit 10000 --type=data

Sun, 27 Sep 2020 06:19:22 GMT | starting dump

Sun, 27 Sep 2020 06:19:22 GMT | got 10000 objects from source elasticsearch (offset: 0)

Sun, 27 Sep 2020 06:19:24 GMT | sent 10000 objects to destination elasticsearch, wrote 10000

Sun, 27 Sep 2020 06:19:25 GMT | got 10000 objects from source elasticsearch (offset: 10000)

Sun, 27 Sep 2020 06:19:26 GMT | sent 10000 objects to destination elasticsearch, wrote 10000

Sun, 27 Sep 2020 06:19:27 GMT | got 10000 objects from source elasticsearch (offset: 20000)

Sun, 27 Sep 2020 06:19:28 GMT | sent 10000 objects to destination elasticsearch, wrote 10000

Sun, 27 Sep 2020 06:19:28 GMT | got 10000 objects from source elasticsearch (offset: 30000)

Sun, 27 Sep 2020 06:19:30 GMT | sent 10000 objects to destination elasticsearch, wrote 10000

Sun, 27 Sep 2020 06:19:30 GMT | got 10000 objects from source elasticsearch (offset: 40000)

Sun, 27 Sep 2020 06:19:32 GMT | sent 10000 objects to destination elasticsearch, wrote 10000

Sun, 27 Sep 2020 06:19:32 GMT | got 10000 objects from source elasticsearch (offset: 50000)

Sun, 27 Sep 2020 06:19:33 GMT | sent 10000 objects to destination elasticsearch, wrote 10000

Sun, 27 Sep 2020 06:19:34 GMT | got 10000 objects from source elasticsearch (offset: 60000)

Sun, 27 Sep 2020 06:19:35 GMT | sent 10000 objects to destination elasticsearch, wrote 10000

Sun, 27 Sep 2020 06:19:36 GMT | got 10000 objects from source elasticsearch (offset: 70000)

Sun, 27 Sep 2020 06:19:37 GMT | sent 10000 objects to destination elasticsearch, wrote 10000

Sun, 27 Sep 2020 06:19:38 GMT | got 10000 objects from source elasticsearch (offset: 80000)

Sun, 27 Sep 2020 06:19:39 GMT | sent 10000 objects to destination elasticsearch, wrote 10000

.....

Sun, 27 Sep 2020 07:21:47 GMT | sent 10000 objects to destination elasticsearch, wrote 10000

Sun, 27 Sep 2020 07:21:48 GMT | got 10000 objects from source elasticsearch (offset: 19980000)

Sun, 27 Sep 2020 07:21:49 GMT | sent 10000 objects to destination elasticsearch, wrote 10000

Sun, 27 Sep 2020 07:21:50 GMT | got 6094 objects from source elasticsearch (offset: 19990000)

Sun, 27 Sep 2020 07:21:50 GMT | sent 6094 objects to destination elasticsearch, wrote 6094

Sun, 27 Sep 2020 07:21:50 GMT | got 0 objects from source elasticsearch (offset: 19996094)

Sun, 27 Sep 2020 07:21:50 GMT | Total Writes: 19996094

Sun, 27 Sep 2020 07:21:50 GMT | dump complete

后续

es虽然支持横向扩容缩容及配置纵向扩减配,但是有些信息还是需要开始设计时安排合理,比如mapping、index分片、主节点信息、冷热、集群规模等。否则后续变更起来很麻烦。

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