Setting up a serial console on OpenBSD is a straightforward process that involves configuring both the operating system and the serial device. Here are the steps to set up a serial console on OpenBSD:
- Connect the serial device to your OpenBSD system: Connect the serial device to the serial port on your OpenBSD system, and make sure that the cables are securely connected.
- Configure the serial device: In order to use the serial device as a console, you need to configure it to use the correct speed, parity, and other settings. You can do this by editing the /etc/ttys file and adding the following line for your serial device:
tty00 "/usr/libexec/getty std.9600" dialup on secure
Note that you may need to modify the line to match the settings of your serial device, such as the speed (e.g., 9600 baud) and the device name (e.g., tty00).
- Configure the OpenBSD kernel: You also need to configure the OpenBSD kernel to use the serial device as a console. To do this, edit the /etc/boot.conf file and add the following line:
console="com0"
Note that you may need to modify the line to match the name of your serial device (e.g., com0 or tty00).
- Reboot your OpenBSD system: Once you have made the necessary changes to both the /etc/ttys and /etc/boot.conf files, you need to reboot your OpenBSD system for the changes to take effect.
After rebooting, your OpenBSD system should use the serial device as a console, and you should be able to access the system through the serial device using a terminal emulator program. If you encounter any issues, you can try adjusting the settings in the /etc/ttys and /etc/boot.conf files until you are able to successfully connect to the serial console.