feat(gateway): add reconciler lease for HA multi-replica deployments#1577
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derekwaynecarr wants to merge 1 commit into
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feat(gateway): add reconciler lease for HA multi-replica deployments#1577derekwaynecarr wants to merge 1 commit into
derekwaynecarr wants to merge 1 commit into
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Introduce a database-backed reconciler lease so that only one gateway replica runs the watch and reconcile loops in Postgres-backed HA deployments. SQLite (single-replica) deployments skip the lease and run unconditionally as before. The lease is a lightweight JSON record in the objects table using CAS for cross-replica safety. A lease coordinator on each replica attempts acquisition, runs renewal while holding, and releases on shutdown for fast failover. Watch and reconcile loops now accept a cancellation channel for cooperative shutdown. Implements NVIDIA#1429 Signed-off-by: Derek Carr <decarr@redhat.com>
derekwaynecarr
requested review from
a team,
maxamillion and
mrunalp
as code owners
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Author
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This is WIP |
Collaborator
Author
|
Need to figure out what we want to do in CI for HA setups. |
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Summary
Introduce a database-backed reconciler lease so that only one gateway replica runs the watch and reconcile loops in Postgres-backed HA deployments. SQLite (single-replica) deployments skip the lease and run unconditionally as before.
The lease is a lightweight JSON record in the objects table using CAS for cross-replica safety. A lease coordinator on each replica attempts acquisition, runs renewal while holding, and releases on shutdown for fast failover. Watch and reconcile loops now accept a cancellation channel for cooperative shutdown.
Related Issue
Closes #1429
Changes
Testing
mise run pre-commitpassesChecklist