[[PageOutline]] = How do I connect to an MF/PL server located at Telehouse via the serial port? = Note: if you are trying to connect to a server in our XO/Bandcon, see [wiki:xo_serial_access our XO serial access page]; for Sunset Park see [wiki:sunsetpark_serial_access Sunset Park serial acess page]. == Serial Console physical setup == In the MF/PL Telehouse rack, we have two 8 port USB to serial adapters using the pl2303 chipset `robideau`. * In: * USB device 0 * `kiyoshi` (Cable 1: ttyUSB0) * `ken` (Cable 2: ttyUSB1) * NOT IN USE (Cable 3: ttyUSB2) * `sontag` (Cable 5: ttyUSB4) * `hubert` (Cable 7: ttyUSB6) * `gabriel` (Cable 8: ttyUSB7) * USB device 1 * `shadow` (Cable 1: ttyUSB8) * `goofball` (Cable 2: ttyUSB9) * `tenant` (Cable 3: ttyUSB10) * `karl` (Cable 4: ttyUSB11) * NOT IN USE (Cable 5: ttyUSB12) * `bolivar` (Cable 6: ttyUSB13) * NOT IN USE (Cable 7: ttyUSB14) * `fred` (Cable 8: ttyUSB15) The serial consoles of the attached machines are all remotely accessible (to properly-authenticated people), and they are also logged and timestamped. We are using [http://cmrg.fithhorseman.net/wiki/cereal cereal] to do this cleanly and easily. == How to connect == In order to connect via serial console to one of the servers named above, ssh into `console.mayfirst.org` as ''servername''`-console` For example: {{{ ssh -t ken-console@console.mayfirst.org cereal attach ken }}} Would give you full read/write access to the console on `ken`. The SSH RSA host key for `console.mayfirst.org` should have a fingerprint of: {{{ 2048 c5:a7:2a:6e:c2:0e:79:7d:d6:ff:ce:c7:2d:30:e2:f2 }}} We can also setup additional users that have read-only access to the sessions created by each of these usernames, should that be desirable. You can request such access by creating a [/newticket ticket]. In addition - we have a serial line running from `bolivar`'s `/dev/ttyUSB0` that goes to `robideau`'s built-in serial port 1, so that `robideau`'s console itself is remotely accessible, and logged. You can connect to robideau's console with: {{{ ssh -t robideau-console@bolivar.mayfirst.org cereal attach robideau }}} == Setting up a new console user == To setup a new console user (this is something only admins can do), do the following as `root@sylvia`: {{{ adduser --disabled-password --gecos='fred console user,,,' fred-console cereal-admin create fred /dev/ttyUSB15 115200 fred-console fred-console cereal-admin start fred }}}