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  1. #1
    Join Date
    Nov 2003
    Location
    Kuwait
    Posts
    13

    server auto reboot

    i seem to remember a program that runs as a daemon on FreeBSD , that reboots the server when there is no ping replay or the server has stoped responding .... does this program really exist ?
    Last edited by barcode; 07-13-2005 at 06:42 PM.

  2. #2
    Join Date
    Dec 2001
    Location
    127.0.0.1
    Posts
    3,640
    I Think it's called SIM (Service Integrity Monitor).
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  3. #3
    Join Date
    Apr 2005
    Location
    Atlanta, Georgia
    Posts
    520
    http://www.rfxnetworks.com/sim.php

    thats the link to SIM and it won't do exactly what you are looking at, if it's something external to the box you most likely need something that would perform a power cycle.

  4. #4
    Join Date
    Nov 2003
    Location
    Kuwait
    Posts
    13
    humm would SIM reboot my server if for example i misconfigured an ip alias to a nic and the server stoped responding ?

  5. #5
    Join Date
    Mar 2005
    Location
    Derbyshire, UK
    Posts
    242
    I use SIM Myself and as far as im aware it only reboots when a certain server load is reached:

    These are the relevant sections for that:

    Code:
    WARN_LD="10"                # max load value before status warning (5 minute load avg.)
    CRIT_LD="20"                # max load value before status critical (5 minute load avg.)
    GMSG="false"		    # send message to all users asking that they logoff for a short period
    And further down:

    Code:
    RPP="false"	   # prioritize nonessential processes at load status warn or crit
                       # 3 values for RPP: warn, crit, or false
    							
    STSRV_LM="warn"	   # stop nonessential services at load status warn or crit
    		   # 3 values for STSRV_LM: warn, crit, or false
    
    RST_LM="crit"      # reboot server at load status warn or crit
    		   # 3 values for RST_LM: warn, crit, or false
    Hopefully that will enlighten you a bit and help you decide.

  6. #6
    You would actually need a device on your network that would power cycle the server or do a hard reset for what you are asking.

  7. #7
    Join Date
    Nov 2001
    Posts
    5,383
    It's not sim it's called watchdog
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  8. #8
    Join Date
    Apr 2001
    Location
    FL, USA
    Posts
    925
    Coight is correct. You are looking for software watchdog. It works very well unless there is a complete system hang. It runs at a very low level so many kernel issues will not impact it. SIM, for example, could fail if cron stopped working.

    Some motherboards have watchdog timers built in. These are very good as they operate at the hardware level and can handle most situations.

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