全6のデータセンターが正常稼働中

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緊急 解決済み レビュー公開済み

Out-of-band network partition in STO

アウトオブバンド管理 — STO

タイムライン

  1. 解決済み

    Out-of-band access in STO has been stable since 20:33 UTC. Duration: 25 minutes. Any reinstall or power action queued during the window has been retried and completed.

  2. 監視中

    Consoles are reachable again. We are restoring the state sync between the two firewall members.

  3. 原因特定

    The firewall pair in front of the STO management network lost its state synchronisation and both members went passive. We have forced one member active.

  4. 調査中

    No IPMI or KVM console in STO is reachable since 20:08 UTC. Production traffic is unaffected. Reinstalls and power actions from the customer area will fail for machines in STO until this is fixed.

事後レビュー ·

発生した事象と変更内容

原因

A firmware update on the management-network firewall pair in STO reset the state-synchronisation key on one member. When the heartbeat failed, both members concluded the other was active and went passive.

影響度

IPMI, KVM, reinstalls and remote power actions were unavailable in STO for 25 minutes. Production connectivity, workloads and data were unaffected.

変更内容

  • Firewall firmware updates are now applied one member at a time with an explicit failover test between the two.
  • The split-brain guard was changed so that a member with a healthy upstream link stays active rather than going passive.

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