FAS Research Computing - Network issues - Cluster degraded – Details zu Vorfällen

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Network issues - Cluster degraded

Gelöst
Großer Ausfall
Aufgetreten am vor 4 MonatenDauerte 5 Tage

Betroffen

Cannon Cluster

Beeinträchtigte Leistung aus 1:34 PM zu 8:41 PM

SLURM Scheduler - Cannon

Beeinträchtigte Leistung aus 1:34 PM zu 8:41 PM

Cannon Compute Cluster (Holyoke)

Beeinträchtigte Leistung aus 1:34 PM zu 8:41 PM

Boston Compute Nodes

Beeinträchtigte Leistung aus 1:34 PM zu 8:41 PM

GPU nodes (Holyoke)

Beeinträchtigte Leistung aus 1:34 PM zu 8:41 PM

seas_compute

Beeinträchtigte Leistung aus 1:34 PM zu 8:41 PM

Aktualisierung
  • Gelöst
    UTC
    Gelöst

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

  • Überprüfung
    UTC
    Überprüfung

    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.

  • Identifizierung
    UTC
    Identifizierung

    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.

  • Analyse
    UTC
    Analyse

    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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https://portal.rc.fas.harvard.edu or email rchelp@rc.fas.harvard.edu