☩ Walking in Light with Christ – Faith, Computing, Diary

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1. SysAdmin says:

   May 27, 2012 at 12:23 am

   Firefox 12.0 Windows 7 x64 Edition
   Mozilla/5.0 (Windows NT 6.1; WOW64; rv:12.0) Gecko/20100101 Firefox/12.0

   Hello fellow admins,

   We had the same incident today on one of our Debain hosts.
   Running the sysrq saved us a trip to the datacenter during the night.
   Thumbs up for the poster!

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2. deep says:

   June 4, 2012 at 12:02 pm

   Google Chrome 19.0.1084.52 Windows 7 x64 Edition
   Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/536.5 (KHTML, like Gecko) Chrome/19.0.1084.52 Safari/536.5

   Hi,
   I usually work on a SLES machine connected through ssh. I wanted to know, is there any command or procedure to know, when the pc got last rebooted and from which IP. generally using the commands
   last reboot (or) ps -fp 1
   only gives us the info regarding the last time of reboot.

   But I wanted to know from which IP the reboot command was given.

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   • admin says:

     June 4, 2012 at 12:08 pm

     Firefox 3.0.10 Windows Vista
     Mozilla/5.0 (Windows; U; Windows NT 6.0; en-GB; rv:1.9.0.10) Gecko/2009042316 Firefox/3.0.10 (.NET CLR 3.5.30729)

     Try with “last” ccmd

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3. Stephan Schmitz says:

   July 30, 2013 at 2:29 pm

   Google Chrome 28.0.1500.72 Windows 7 x64 Edition
   Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/28.0.1500.72 Safari/537.36

   I would not recommend to send only the "r" to sysrq-trigger. As you said, it will reboot the system immediately – without syncing or unmounting your disks!

   But – rseiub to the rescue – there is actually a sequence that let you do almost the same as reboot! 
   Note: Instead of echoing to sysrg-trigger, use the Alt + SysRq keyboard shortcut (SysRq is almost always the same as the PrintScreen button.). Leave about half a second between each command.
   Alt + SysRq + r  // switch keyboard to raw mode
   Alt + SysRq + s  // sync disk
   Alt + SysRq + e  // terminate all processes
   Alt + SysRq + i  // kill all processes
   Alt + SysRq + u  // remount all filesystems in read-only mode
   Alt + SysRq + b  // (hard) reboot the system

    

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   • admin says:

     July 30, 2013 at 2:42 pm

     Google Chrome 27.0.1453.110 GNU/Linux x64
     Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/27.0.1453.110 Safari/537.36

     good to know thx Stephan ! 🙂

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