Access Compute Node Logs

This procedure shows how the ConMan utility can be used to retrieve compute node logs.

Prerequisites

Limitations

  • Encryption of compute node logs is not enabled, so the passwords may be passed in clear text.
  • If the user is a member of a tenant, then only the logs for that tenant are available.

Procedure

NOTE this procedure has changed since the CSM 1.6.x releases.

  1. Log on to a Kubernetes master or worker node.

  2. (ncn-mw#) Start tailing the console log.

    Execute the cray console tail command to start tailing the console log for a specific node.

    cray console tail \
    --lines 20 \
    --follow \
    $XNAME

    Example output:

    Connected to wss://api-gw-service-nmn.local/apis/console-operator/console-operator/tail/x3000c0s19b1n0
<ConMan> Console [x3000c0s19b1n0] log at 2025-04-22 11:00:00 UTC.
<ConMan> Console [x3000c0s19b1n0] log at 2025-04-22 12:00:00 UTC.
<ConMan> Console [x3000c0s19b1n0] log at 2025-04-22 13:00:00 UTC.
<ConMan> Console [x3000c0s19b1n0] log at 2025-04-22 14:00:00 UTC.
<ConMan> Console [x3000c0s19b1n0] log at 2025-04-22 15:00:00 UTC.
<ConMan> Console [x3000c0s19b1n0] log at 2025-04-22 16:00:00 UTC.

  3. (ncn-mw#) Stop the tailing of the console log.

    Press Ctrl-C twice to stop the tailing of the console log.

    Example output:

    <ConMan> Console [x3000c0s19b1n0] log at 2025-04-22 15:00:00 UTC.
^C^C
Aborted!