Shutdown to a Halt and restart

 
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Homework and Emergencies Emergency UNIX and Linux Support Shutdown to a Halt and restart
# 8  
Old 08-19-2010
hi there
m facing a very serious problem with my system
when i turn it ON everything seems to be working
like it comes till the linux starting modes and asks whether to start linux normally or failsafe mode selecting any of the two options it ends up at a state shown in the attached image
plz help me as soon as possible
regards

http://cid-8f2187e801f053f1.office.l...ocuments/1.jpg

Last edited by vbe; 08-19-2010 at 09:04 AM.. Reason: removed IMG tags in order to see the link
# 9  
Old 08-19-2010
You are having a kernel panic. I would run "fsck" on the file systems.

---------- Post updated at 08:37 AM ---------- Previous update was at 08:26 AM ----------

Looking closer I see the system is fscking itself. You might go to your support site for your server and OS to find out their recommendation for this issue.

If you like I can tell you some of the steps we take with our HP Proliant Servers and SCO Unix OS to deal with a kernel panic.
# 10  
Old 08-19-2010
well mikep9 thank you for helpin me
but the thing is that i dont knw much abt the linux u can just take me as a newbee or a beginner
please tell me the steps you are talking about
tht ll b really gr8 of u
thanx
# 11  
Old 10-05-2010
Power get physical !!

Quote:
Originally Posted by hedkandi
I've got critical patching this weekend on 6 HP UX machines, back to back and the customer has requested to shutdown, and halt the machines and to bring it up at a later period. The thing is the servers are located offshore and we are just the support team. I have a special login thru a console where I can shutdown and bring up the servers.

Here's the shutdown and halt command:

Code:
shutdown -h now

What is the command to start up without actual pressing on the power on button?

Im using HP UX 11.31 here

Thanks in advance.

---------- Post updated 06-25-10 at 12:12 AM ---------- Previous update was 06-24-10 at 10:29 PM ----------

be kind and reply me please. I need to put up calendar notification for the guy to run commands on Sunday

if you shutdown the server electrically there IS NO command to turn it back on, your OS is in a coma !! your CPU/RAM are empty .

If you dont have a remote management system that controls the power switch , you will have to ask the security gard to push the right button Smilie

Last edited by remi75; 10-05-2010 at 06:56 AM..
# 12  
Old 10-11-2010
Ding! We have a winner!

If you want the box to shutdown and immediately come back, you can use some variant of reboot. If you want it to shutdown and then come back at a later time, you're SOL without special hardware or a human standing next to the box.

If you wanted to get wacky, you could have the box reboot into some kind of not-entirely active state, like single user mode, wait for a pre-determined amount of time, and then boot into the normal fully-active runlevel. You better be damn sure of yourself though, because if you make a single mistake, it won't come back and you'll need someone to debug it from the console.

Or, more sanely, you could reboot but disable whatever services you don't want running until the time has passed. EG If the reason you want it "off" for a while is to keep people from surfing your web server, disable the web server daemon, reboot, wait until the time is passed and then start the web server.
# 13  
Old 10-17-2010
Actually, there is a way.

there's a feature on ethernet network cards that's called WOL (Wake-On Lan), this will turn your computer or server on, of course you have to configure it first. However they must be reachable from your place and poke a hole in the firewall to the port needed (I don't know what is it, prolly 23?).
From your computer you must use a program that sends this "magic packet" to each one of those IPs, and they will be powered-on.
Hope that helps
# 14  
Old 10-17-2010
For a machine to wake up based on network activity, the machine cannot be shutdown.

The original poster specifically mentioned the machines would be shutdown (not asleep or in a sleep or suspended state).
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