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storcon: Introduce deletion tombstones to support flaky node scenario (#12096)

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## Problem

Removed nodes can re-add themselves on restart if not properly
tombstoned. We need a mechanism (e.g. soft-delete flag) to prevent this,
especially in cases where the node is unreachable.

More details there: #12036

## Summary of changes

- Introduced `NodeLifecycle` enum to represent node lifecycle states.
- Added a string representation of `NodeLifecycle` to the `nodes` table.
- Implemented node removal using a tombstone mechanism.
- Introduced `/debug/v1/tombstone*` handlers to manage the tombstone
state.
This commit is contained in:
Alexander Sarantcev
2025-06-06 14:16:55 +04:00
committed by Alex Chi Z
parent 72b09473c1
commit 765b76f4cd
11 changed files with 345 additions and 24 deletions
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storage_controller/migrations/2025-06-01-201442_add_lifecycle_to_nodes/down.sql Normal file
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ALTER TABLE nodes DROP COLUMN lifecycle;

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storage_controller/migrations/2025-06-01-201442_add_lifecycle_to_nodes/up.sql Normal file
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ALTER TABLE nodes ADD COLUMN lifecycle VARCHAR NOT NULL DEFAULT 'active';