FAS Research Computing - Network issues - Cluster degraded – Детали инцидента

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Network issues - Cluster degraded

Решено
Полная недоступность
Началось 3 месяца назаддлился 5 дней

Затронутые

Cannon Cluster

Производительность снижена от 1:34 PM до 8:41 PM

SLURM Scheduler - Cannon

Производительность снижена от 1:34 PM до 8:41 PM

Cannon Compute Cluster (Holyoke)

Производительность снижена от 1:34 PM до 8:41 PM

Boston Compute Nodes

Производительность снижена от 1:34 PM до 8:41 PM

GPU nodes (Holyoke)

Производительность снижена от 1:34 PM до 8:41 PM

seas_compute

Производительность снижена от 1:34 PM до 8:41 PM

Обновления
  • Решено
    Решено

    This incident has been resolved by draining and rebooting any nodes with stuck mounts.

  • Мониторинг
    Мониторинг

    Mounts to Holyoke Isilon (specifically /n/sw) are broken on numerous nodes across the cluster. We have a check rolling out to find these nodes so we can remediate them individually. Until remediated the cluster will be in a degraded state. Running jobs may randomly die or fail as they hit nodes that have stale mounts.

    It will be risky to run jobs for the next hour and then, after that point, the cluster will have a large number of nodes closed waiting for them to drain so we can reboot them and fix the mounts.

    At this time we are unaware of any holy-isilon problems other than the effect this had on cluster nodes/running jobs. We will update should we identify any data storage concerns.

  • Определено
    Определено

    Mounts to Holyoke Isilon (specifically /n/sw) are broken on numerous nodes across the cluster. We have a check rolling out to find these nodes so we can remediate them individually. Until remediated the cluster will be in a degraded state. Running jobs may randomly die or fail as they hit nodes that have stale mounts.

    It will be risky to run jobs for the next hour and then, after that point, the cluster will have a large number of nodes closed waiting for them to drain so we can reboot them and fix the mounts.

  • Изучается
    Изучается

    A network issue affecting storage critical to the cluster is It's causing instability. The cluster is currently in a degraded state as a result. We are looking into the problem. Updates to follow..

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