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Full Discussion: Init scripts missing . . .
Top Forums UNIX for Dummies Questions & Answers Init scripts missing . . . Post 302834485 by rbatte1 on Friday 19th of July 2013 04:58:04 AM
Old 07-19-2013
We've had a similar problem where an archiving job was failing in the batch with a permissions issue. We changed it to run as root forgetting that it meant a different home directory and therefore an input file was not found. The knock on effect meant that we managed to move /dev, /etc, /opt ...... into an archive area. Very difficult to recover because you could not start a new session (/etc/passwd was not there of course) but with luck someone had a session as root that we could manipulate enough to recover, putting back /etc & /dev first and we could get more people logged on to investigte and restore.

The upshot is that your incident won't have happened by bad luck, sunspots or whatever, there has been an action taken to remove things. It may have been a mis-typed command, or an ill designed batch job where a small change has had catastrophic consequences.

Depending how paranoid your auditing is, you may have logged something, maybe not. We were able to work out what it was based on the time batch jobs started failing to start and the jobs already running, so we got lucky. We also had a bootable image on DVD to restore from if necessary.

Whilst you may be able to recover (or go to your full restore/DR plan) you need to determine what happened to prevent a recurrence.


Robin
Liverpool/Blackburn
UK
 

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reboot(3C)																reboot(3C)

NAME
reboot - reboot system or halt processor SYNOPSIS
#include <sys/reboot.h> int reboot(int howto, char *bootargs); The reboot() function reboots the system. The howto argument specifies the behavior of the system while rebooting and is a mask con- structed by a bitwise-inclusive-OR of flags from the following list: RB_AUTOBOOT The machine is rebooted from the root filesystem on the default boot device. This is the default behavior. See boot(1M) and kernel(1M). RB_HALT The processor is simply halted; no reboot takes place. This option should be used with caution. RB_ASKNAME Interpreted by the bootstrap program and kernel, causing the user to be asked for pathnames during the bootstrap. RB_DUMP The system is forced to panic immediately without any further processing and a crash dump is written to the dump device (see dumpadm(1M)) before rebooting. Any other howto argument causes the kernel file to boot. The interpretation of the bootargs argument is platform-dependent. Upon successful completion, reboot() never returns. Otherwise, -1 is returned and errno is set to indicate the error. The reboot() function will fail if: EPERM The {PRIV_SYS_CONFIG} privilege is not asserted in the effective set of the calling process. intro(1M), boot(1M), dumpadm(1M), halt(1M), init(1M), kernel(1M), reboot(1M), uadmin(2) 22 Mar 2004 reboot(3C)
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