Help Center/ Bare Metal Server/ Private Image Creation Guide/ Linux/ Configuring Remote Login to a BMS/ ARM: CentOS 7
Updated on 2025-11-07 GMT+08:00
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ARM: CentOS 7

  1. Use the vi editor to open the /etc/default/grub file and add the following information after the GRUB_CMDLINE_LINUX field. 
    consoleblank=600 console=tty0 console=ttyAMA0,115200
  2. Run the following commands to update the configuration:

    stty -F /dev/ttyAMA0 speed 115200

    grub2-mkconfig -o /boot/efi/EFI/centos/grub.cfg

    systemctl enable serial-getty@ttyAMA0

  3. To allow user root to log in to the BMS using a serial port, check whether the /etc/securetty configuration file contains ttyAMA0. If not, add it.