April 9, 2019 · 9:46 am
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Tip: Edit grub kernel command line in RHEL 7 or CentOS 7

Easy with virt-customize. In this example I’m adding the nosmt option to the command line:

$ virt-customize -a rhel7.img \
    --edit '/etc/default/grub:
      s/^GRUB_CMDLINE_LINUX="/GRUB_CMDLINE_LINUX="nosmt /' \
    --run-command 'grub2-mkconfig -o /boot/grub2/grub.cfg'
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