elasticsearch插件—— esm（数据迁移）

Posted 2021-09-15 一曲广陵散

一、参考

elasticsearch 学习系列目录——更新ing

github 源码 esm

二、下载安装

2.1 下载源码

esm-0.5

2.2 安装

(1) 通过源码安装

tar -xvzf esm-0.5.0.tar.gz

cd esm-0.5.0/

make

(2) 通过安装包安装

tar -xzvf darwin64.tar.gz

ls -ll bin/darwin64

esm

三、数据导出到本地

esm ./bin/darwin64/esm --help

Usage:
  esm [OPTIONS]

Application Options:
  -s, --source=                    source elasticsearch instance, ie: http://localhost:9200
  -q, --query=                     query against source elasticsearch instance, filter data
                                   before migrate, ie: name:medcl
  -d, --dest=                      destination elasticsearch instance, ie: http://localhost:9201
  -m, --source_auth=               basic auth of source elasticsearch instance, ie: user:pass
  -n, --dest_auth=                 basic auth of target elasticsearch instance, ie: user:pass
  -c, --count=                     number of documents at a time: ie "size" in the scroll request
                                   (10000)
      --buffer_count=              number of buffered documents in memory (1000000)
  -w, --workers=                   concurrency number for bulk workers (1)
  -b, --bulk_size=                 bulk size in MB (5)
  -t, --time=                      scroll time (10m)
      --sliced_scroll_size=        size of sliced scroll, to make it work, the size should be > 1
                                   (1)
  -f, --force                      delete destination index before copying
  -a, --all                        copy indexes starting with . and _
      --copy_settings              copy index settings from source
      --copy_mappings              copy index mappings from source
      --shards=                    set a number of shards on newly created indexes
  -x, --src_indexes=               indexes name to copy,support regex and comma separated list
                                   (_all)
  -y, --dest_index=                indexes name to save, allow only one indexname, original
                                   indexname will be used if not specified
  -u, --type_override=             override type name
      --green                      wait for both hosts cluster status to be green before dump.
                                   otherwise yellow is okay
  -v, --log=                       setting log level,options:trace,debug,info,warn,error (INFO)
  -o, --output_file=               output documents of source index into local file
  -i, --input_file=                indexing from local dump file
      --input_file_type=           the data type of input file, options: dump, json_line,
                                   json_array, log_line (dump)
      --source_proxy=              set proxy to source http connections, ie: http://127.0.0.1:8080
      --dest_proxy=                set proxy to target http connections, ie: http://127.0.0.1:8080
      --refresh                    refresh after migration finished
      --fields=                    filter source fields, comma separated, ie: col1,col2,col3,...
      --rename=                    rename source fields, comma separated, ie: _type:type,
                                   name:myname
  -l, --logstash_endpoint=         target logstash tcp endpoint, ie: 127.0.0.1:5055
      --secured_logstash_endpoint  target logstash tcp endpoint was secured by TLS
      --repeat_times=              repeat the data from source N times to dest output, use align
                                   with parameter regenerate_id to amplify the data size
  -r, --regenerate_id              regenerate id for documents, this will override the exist
                                   document id in data source
      --compress                   use gzip to compress traffic
  -p, --sleep=                     sleep N seconds after each bulk request (-1)

Help Options:
  -h, --help                       Show this help message

3.1 先创建测试数据

PUT yz_tracing-000001

POST _reindex
{
  "source": {
    "index": "test_tracing-000001"
  },
  "dest": {
    "index": "yz_tracing-000001"
  }
}

GET _tasks?actions=*reindex

./bin/darwin64/esm -s https://testhost:9243 -m "elastic:testpasswd" -x "yztest" -o "yz_oss_test-000001"

./bin/darwin64/esm -s http://testhost -m elastic:testpasswd -x yz_tracing-000001 -o "yz_oss_tracing-000001.txt"