Console Output and Serial Terminals: Difference between revisions
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=== Add An Additional Serial Login Device === | === Add An Additional Serial Login Device: '''/dev/ttyUSB0''' === | ||
One can add an additional '''Serial''' user login session on a serial device. If your NST system does not have a physical serial port, you can add a '''USB To Serial Converter''' for user login. In this example we are adding a '''USB To Serial Converter''' which attaches as device: "'''ttyUSB0'''". Simply start a serial login on this device as follows: | One can add an additional '''Serial''' user login session on a serial device. If your NST system does not have a physical serial port, you can add a '''USB To Serial Converter''' for user login. In this example we are adding a '''USB To Serial Converter''' which attaches as device: "'''ttyUSB0'''". Simply start a serial login on this device as follows: | ||
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Revision as of 07:11, 21 May 2011
Overview
This page describes different methods for setting up a serial console post booting up an NST system. See Getting Started - Server Boot for setting up a serial console initially during a NST Live boot.
Serial Console On NST 2.13.0
Use the following command to manually enable the serial console on NST versions 2.13.0 using upstart. This example will set the serial baud rate to: "57600" and use serial device: "/dev/ttyS0".
[root@probe ~]#
Serial Console On NST 2.15.0 or Above
systemctl Bash Completion
Add Serial Console On Device: /dev/ttyS0
Use the following command to manually enable the serial console on NST versions 2.15.x or above using systemd. This example will use the current baud rate (agetty -s option) set typically during a boot time and use serial device: "/dev/ttyS0". If one needs to adjust the baud rate, send a break character on your communications application to cycle through the baud rate list (i.e., In this example: 115200, 38400 and 9600).
[root@probe ~]#
To get the serial console status use the systemctl command as follows:
serial-getty@ttyS0.service - Serial Getty on ttyS0 Loaded: loaded (/lib/systemd/system/serial-getty@.service) Active: active (running) since Tue, 17 May 2011 16:59:56 -0400; 5min ago Main PID: 31524 (agetty) CGroup: name=systemd:/system/serial-getty@.service/ttyS0 └ 31524 /sbin/agetty -s ttyS0 115200 38400 9600 [root@probe ~]#
A user login prompt should now be active on serial device: "/dev/ttyS0"
Add An Additional Serial Login Device: /dev/ttyUSB0
One can add an additional Serial user login session on a serial device. If your NST system does not have a physical serial port, you can add a USB To Serial Converter for user login. In this example we are adding a USB To Serial Converter which attaches as device: "ttyUSB0". Simply start a serial login on this device as follows:
[root@probe ~]#
To get the serial console status for this device use the systemctl command as follows:
serial-getty@ttyUSB0.service - Serial Getty on ttyUSB0 Loaded: loaded (/lib/systemd/system/serial-getty@.service) Active: active (running) since Fri, 20 May 2011 21:13:55 -0400; 3min 24s ago Main PID: 1273 (agetty) CGroup: name=systemd:/system/serial-getty@.service/ttyUSB0 └ 1273 /sbin/agetty -s ttyUSB0 115200 38400 9600 [root@probe ~]#
A user login prompt should now be active on serial device: "/dev/ttyUSB0"
To make this configuration permanent add the following:
[root@probe ~]#