Hi, > > I try to setup a kind of rescue console for a few users of mine. As Jeff > described in the howto and in his book, there should be a simple setup of > connecting to uml instances with each other. > > > > master_uml -> slave_uml > Can you describe exactly what you're doing, and exactly how it doesn't > work?
Sure, sorry for not describing everything I did - I tried for such a long time, that I don't remember all the things I tried. Generally, I follow the steps in your book, I've got two UML instances, master_uml and slave_uml. master_uml shall service the poor soul that killed his ssh on its primary instance, the slave_uml. What I want to do is give this person a login into the master_uml which, after authentification on this servicing master_uml, leads him to the auth of his, broken, slave_uml. My setup consists of two instances on a local network, both instances run on 2.6.18.1 kernels with a quite lean inittab, the console part looking as follows: # UML console start: 0:1235:respawn:/sbin/getty 38400 tty0 linux My normal startup cmdline looks like con=pts con0=fd:0,fd:1 That kind of works for starting the instance up in a screen and gives me the possibility to login via screen or via network/ssh. Now I try to interconnect the two instances according to your book's chapter 'A Virtual Serial Line' - but I don't really get the clue I think, sorry :-( First of all, I set up a pts on con 8: host: uml_mconsole master_uml config con8=pts OK Now I start a getty in the instance: master_uml: /sbin/getty 38400 tty8 which results in: get_pty : Couldn't grant pty - errno = -2 open_pts : Failed to open pts Registering fd 0 twice Irqs : 2, 2 Ids : 0x0864e4c4, 0x0864e218 Debian GNU/Linux 4.0 master_uml tty8 master_uml login: This login is not usable, one can only ctrl-c out of there. If I keep it running and follow the instructions furthermore, I try to take a look on the host about which pts the con8 got assigned to: host: uml_mconsole master_uml config con8 OK pts There's no pts:/dev/pts/28 or any other number, just the 'OK pts' which fits to the error from above, I guess. The next steps: host: uml_mconsole slave_uml config con8=tty:/dev/pts/<number> and slave_uml: screen /dev/tty8 seems useless at this point, because of the missing pts number. My main problem seems to be, that I don't find a way to configure inittab for - access via screen on startup - access via network whilst running (which both works great until I try to interconnect the two instances via serial line) - access one uml via serial line from the other instance. What I need is a hint about /etc/inittab What to configure there to enable the serial stuff and a screen login and about the uml cmdline I tried several things from ssl1=pts to unnumbered other attempts, but I don't get it, sorry :-( I would be very grateful for any pointer to my personal point of failure in this subject. I do remember that I once had an interconnection between two umls, but I did not document what was different from my actual setup and it's been quite a while since then. Frustrating :-( Kind regards, Karl -- "Ein Herz für Kinder" - Ihre Spende hilft! Aktion: www.deutschlandsegelt.de Unser Dankeschön: Ihr Name auf dem Segel der 1. deutschen America's Cup-Yacht! ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys - and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV _______________________________________________ User-mode-linux-user mailing list User-mode-linux-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/user-mode-linux-user
