Rouzbeh† 9f31d7d056 feat: synchronize access.log client IPs across nodes (#5098) ...

* feat: synchronize access.log client IPs across nodes for global fail2ban limits

* fix(nodes): harden cross-node client-IP merge for cluster fail2ban

MergeInboundClientIps inserted new rows with the remote node's primary key,
which collides with the independently auto-incremented local id and rolled
back the whole sync batch — breaking exactly the node-only clients the
feature targets. It also never evicted stale IPs, so the 30-minute cutoff
was defeated cluster-wide (the master pushed its unpruned table back to
nodes, which re-added IPs they had just pruned) and the blobs grew unbounded.

- drop the remote id on create (Id=0) and guard the email-unique race with
  ON CONFLICT DO NOTHING; also fixes a latent Postgres sequence collision
- apply the same 30-minute stale cutoff inside the merge and skip creating
  node-only rows whose IPs are all stale
- throttle the IP fetch/merge/push to ~10s (data only refreshes every 10s)
  instead of running on every 5s traffic tick, cutting SQLite write churn
- log the load error on the push path and tidy the merge response message
- add unit tests for the merge (remote-id, dedup, stale-drop, skips)

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Co-authored-by: Rqzbeh <Rqzbeh@example.com>
Co-authored-by: Sanaei <ho3ein.sanaei@gmail.com>

2026-06-09 00:59:50 +02:00

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