Unfreeze, Read-Only, Move to Cold/Frozen

[Ryan_Downey]

Team,

I'm working through the Elastic Upgrade Assistant and its telling me I have 38 Warnings, all the same warning, that I need to, "Index [XYZ] is frozen. Frozen indices no longer offer any advantages. Instead, unfreeze the index, make it read-only, and move it to the cold or frozen tier." What are the steps that I need to take here?

1. POST /<index>/_unfreeze
2. PUT your_index/_settings
{
  "index": {
    "blocks.read_only": true
  }
}
3. Set to cold tier?

Thank you.

[warkolm (Mark Walkom)]

That's all correct, moving it to the cold tier would be a reallocation request based on your node tiering.

[Ryan_Downey]

Mark,

Completed steps would look like this then:

1. POST /<your_index>/_unfreeze
2. PUT <your_index>/_settings
   {
   "index": {
   "blocks.read_only": true
   }
   }
3. PUT <your_index>/_settings
   {
   "index.routing.allocation.require._tier": "data_cold" // or your specific tier name
   }

Ryan