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静的 IP アドレスが使用されている場合、ネットワークを経由する kdump には DNS1 変数が設定されている必要がある

Solution Verified - Updated -

Issue

  • 静的 IP アドレスを使用している場合、kdump が vmcore を SSH/NFS ターゲットへ保存できません。
dracut-pre-pivot[555]: device node not found
kdump: dump target is
kdump: error:Dump target is not mounted
kdump: saving vmcore failed
  • rdsosreport.txt には以下のエラーがあります。
[   10.413049] localhost.localdomain dracut-pre-pivot[555]:Mounting from /etc/fstab
[   10.417715] localhost.localdomain dracut-pre-pivot[555]: device node not found
[   10.418731] localhost.localdomain dracut-pre-pivot[555]:Mounting example.com:/mount/point
[   10.423250] localhost.localdomain dracut-pre-pivot[555]: mount.nfs:Failed to resolve server example.com:Name or service not known

Environment

  • Red Hat Enterprise Linux 7
  • kexec-tools-2.0.7-19.el7_1.2

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