ESM tool migration

[iliyab09 (Iliya B)]

Hello
I have couple questions about migration, can't find the information nowhere.

• When the migration is in progress do I need to stop read write to my old cluster?

• When the migration is done I can just connect to that new cluster and continue using it?
  I mean all the indexes will be in place and new writing will be continuing to the same (new) indexes?

• Can I stop the migration progress any time? can it somehow damage my old cluster/indexes?
  Thank for the help.

[warkolm (Mark Walkom)]

Welcome to our community!

Can you clarify what ESM is?

[iliyab09 (Iliya B)]

Sorry with all those questions I forgot to mention it.

It's an Elasticsearch Migration Tool.

Elasticsearch cross version data migration.

Cross version Elasticsearch data migration with ESM](Dec 3rd, 2020: [EN] Cross version Elasticsearch data migration with ESM)

Features:

• Cross version migration supported
• Overwrite index name
• Copy index settings and mapping
• Support http basic auth
• Support dump index to local file
• Support loading index from local file
• Support http proxy
• Support sliced scroll ( Elasticsearch 5.0 +)
• Support run in background
• Generate testing data by randomize the source document id
• Support rename filed name
• Support unify document type name
• Support specify which _source fields to return from source
• Support specify query string query to filter the data source
• Support rename source fields while do bulk indexing
• Load generating with

GitHub - medcl/esm: An Elasticsearch Migration Tool.

[warkolm (Mark Walkom)]

Thanks!

That tool is written and maintained by an ex-Elastician and is not an official Elastic tool. You'd need to ask them how it handles the migration aspects.