emergency shutdown best practices. Post: 302244752

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Top Forums UNIX for Advanced & Expert Users emergency shutdown best practices. Post 302244752 by jsw371 on Wednesday 8th of October 2008 02:27:41 PM

10-08-2008

Registered User

Here in lies the problem. Our network security officer will not allow ssh as root. Also, we have many "flavors" of unix/linux which have different shutdown options. I tried something like this but it does not work on all the servers. (They do not like the <<\EOT...EOT construct)
$1 is list of remote servers. mbaker has sudo root privilege

cat $1 | while read X
do
echo "Starting shutdown of $X"
ssh -T ${X} << \EOT >> Emergency_shutdown.log 2>> error.log
name=`uname -n`
echo "name = $name"
type=`uname -a | awk '{print $1}'`
echo "type = $type"
if [ "$type" = "SunOS" ]
then
echo "Emergency shutdown initiated for $name."
# sudo -u root shutdown -y -i5 -g0 "Emergency shutdown started!!!!!" &
fi
if [ "$type" = "Linux" ]
then
echo "Emergency shutdown initiated for $name."
sudo -u root /sbin/shutdown -k now "This is just a test. Not really re-booting." < /dev/null > /dev/null 2>&1 &
fi
EOT
if [ $? -ne 0 ]
then
echo "Host $X connect failed."
fi
done
exit 0

jsw371

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LEARN ABOUT OPENSOLARIS

halt

halt(1M)						  System Administration Commands						  halt(1M)

NAME

       halt, poweroff - stop the processor

SYNOPSIS

       /usr/sbin/halt [-dlnqy]

       /usr/sbin/poweroff [-dlnqy]

DESCRIPTION

       The  halt  and  poweroff  utilities  write  any	pending information to the disks and then stop the processor. The poweroff utility has the
       machine remove power, if possible.

       The halt and poweroff utilities normally log the system shutdown to the system log daemon, syslogd(1M), and place a shutdown record in  the
       login accounting file /var/adm/wtmpx. These actions are inhibited if the -n or -q options are present.

OPTIONS

       The following options are supported:

       -d    Force a system crash dump before rebooting. See dumpadm(1M) for information on configuring system crash dumps.

       -l    Suppress sending a message to the system log daemon, syslogd(1M), about who executed halt.

       -n    Prevent the sync(1M) before stopping.

       -q    Quick halt. No graceful shutdown is attempted.

       -y    Halt the system, even from a dialup terminal.

FILES

       /var/adm/wtmpx	 History of user access and administration information.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWcsu			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       dumpadm(1M), init(1M), reboot(1M), shutdown(1M), sync(1M), syslogd(1M), inittab(4), attributes(5), smf(5)

NOTES

       The halt and poweroff utilities do not cleanly shutdown smf(5) services. Execute the scripts in /etc/rcnum.d or execute shutdown actions in
       inittab(4). To ensure a complete shutdown of system services, use shutdown(1M) or init(1M) to reboot a Solaris system.

SunOS 5.11							    2 Nov 2004								  halt(1M)