SA Wish list for Solaris 8

From: Carlos Sevillano (carlos_sevillano_at_ureach.com)
Date: 11/03/04

  • Next message: list-unixexpert_at_adelphia.net: "SUMMARY - Veritas VM 3.5 2nd disk encapsulation problem" 
    Date: Wed, 3 Nov 2004 14:51:00 -0500
To: sunmanagers@sunmanagers.org

    I am looking for a tool (like screen or the Linux virtual
    consoles) that allows multiple users to see one connection to a
    remote host's console. A connection such as telnet or ssh to a
    remote console ei: User-A is on console, user B, C and D are
    viewing what user A is typing. Better if the tool can allow
    users B, C, and D to take over the console. Most of my consoles
    are TV100 emulators, Annex, CISCO, VCC, tip etc. Plus if the
    tool uses encryption.

    Reason: I need it for those occasions when a system dies and it
    takes hours working on the console to fix it. It would be
    really nice if everyone could telnet to a workstation and from
    that workstation run a program that would allow everyone to view
    the console of the down system and allow them to (view is
    enough) but if allowed them to take turns as needed would be
    best. Many times at 4-5AM when you cant type it would be nice
    if other could be sharing or viewing the console. Is there such
    a tool out-there?

    I am looking for a way to limit the amount of memory that can be
    taken from /tmp. I want to limit or leave space available on
    /tmp. I would like to l leave 500MB on most servers and 1GB on
    the big clusters. Can it be done with either
    tmpfs:tmpfs_maxkmem or tmpfs:tmpfs_minfree and how? What would
    the kernel settings be on /etc/systems? Please make sure that
    you done it if you make a suggestion I would like something
    from someone who has implemented it!

    Reason: Users and sometimes fill /tmp and caused the system to
    hang. If you are lucky you get there through the console and
    remove the offending files. If not you might not have enough
    resources to get in. On big clusters it can panic the nodes
    when RPC goes south. Ill like to limit or reserve space away
    from /tmp.

    I am looking for a tool to allow me a decent/stable emergency
    access to my systems. The tool could e a web server; an
    instance that runs on each server. A tool that given certain
    authentication will give access into the system as root. Or a
    Perl , C, or "nc" type daemon that does the same (given a
    pass-phrase give you a session into the system as root). Best
    if the tool uses some type of encryption.

    I have too many security models and some of them do not work as
    intended. The average turn-around to get to a systems root
    password (for when system crash) is about 1hr. Many times the
    different security models do not work as designed and
    implemented and we are forced to crash the system to single user
    mode, remove the security products and then get in, re-install
    the security products and go back to normal. (minus the SAs
    sanity!). Ill like a tool than when all else fails would let
    me service the system.

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