[CentOS] Reboot/shutdown without login
I installed CentOS 8 on a Dell server and it's been running fine as a
headless system, admin'd remotely by ssh. Now I'd like to allow someone to
shut it down at the console without logging in. Is there a way to do that?
Or do I need to get the GUI working?
I tried switching it into graphical mode ("systemctl isolate graphical")
and the console freezes with nothing but a non-blinking text cursor at top
left. The usual virtual console switching hotkeys (ctrl-alt F1-F7) don't do
anything when it's hung like this. The system is still responsive in my ssh
session. It doesn't recover if I switch back to multi-user target so I have
to reboot it to make the console useful again. I'm guessing I'm lacking a
good video driver. (It's an R720xd I inherited and the latest drivers on
Dell's site are for RHEL 7.)
___
CentOS mailing list
CentOS@centos.org
https://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Reboot/shutdown without login
On Mon, 11 Jan 2021 10:23:04 -0800 Kenneth Porter wrote: > Now I'd like to allow someone to > shut it down at the console without logging in. How do you want the person to shut it down without logging in? Some computers have a "smart" power switch pushbutton that you can program to do a shutdown or a reboot depending on how long you hold the button down. Otherwise you'll need at least a keyboard, or possibly something like a joystick or a mouse button? -- MELVILLE THEATRE ~ Real D 3D Digital Cinema ~ www.melvilletheatre.com ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Reboot/shutdown without login
Hello,
I had this problem on a Dell T7600 running CentOS 7.6 and 8.2.
The Dell does not have an embedded GPU so a PCIe one is used, typically
Nvidia.
The standard CentOS Nvidia driver does not work on a Dell T7***.
You need to apply the Nvidia driver from their web site.
Below are the detailed instructions for CentOS 7.6
Installation of Dell T7600 CentOS 7.6 Nvidia GPU Driver
Make sure that the Dell T7600 is attached to a network.
Install OS if required: Boot USB CentOS 7.6 distribution
Use arrow keys to position to 'Install CentOS 7'
Enter
Use arrow keys to insert at the end of boot command
line: nouveau.modeset=0
Build CentOS 7.6 making sure that the network is
enabled during the configuration phase
Reboot making sure that the USB CentOS 7.6
distribution is removed
Common procedure: At CentOS boot prompt enter
Use arrow keys to insert at end of line starting
'linux16': nouveau.modeset=0
Enter
Log in, start a terminal window and become superuser
Enter: yum -y update
kernel-3.10.0-1160.11.1.el7.x86_64
Enter: cd /etc/default then edit the file grub
Change: GRUB_DEFAULT=0
Append to GRUB_CMDLINE_LINUX before last ":
nouveau.modeset=0
Enter: grub2-mkconfig -o /boot/grub2/grub.cfg
Enter: grub2-mkconfig -o
/boot/efi/EFI/centos/grub.cfg
Enter Browser and go to:
www.nvidia.com/object/unix.html
Download Nvidia Legacy Driver 390.138 and save
*
Reboot making sure the 1160.11 kernel is selected
Log in, start a terminal window and become superuser
Enter: yum -y groupinstall "Development Tools"
Enter: yum -y install kernel-devel epel-release
Enter: systemctl isolate multi-user.target
Log in and become superuser
Change directory to where the Nvidia driver was
saved *
Enter: sh NVIDIA-Linux-x86_64-* and answer
Yes/Overwrite to everything
Reboot making sure that the 1160.11 kernel is
selected
The procedure is now complete
To check the driver is installed correctly: Log in,
start a terminal window and become superuser
Enter: lshw - numeric -C display
The configuration line should have: driver=nvidia
nvidia-settings can now be used to change display
settings
Regards,
Mark Woolfson
-Original Message-
From: CentOS On Behalf Of Kenneth Porter
Sent: 11 January 2021 18:23
To: CentOS mailing list
Subject: [CentOS] Reboot/shutdown without login
I installed CentOS 8 on a Dell server and it's been running fine as a
headless system, admin'd remotely by ssh. Now I'd like to allow someone to
shut it down at the console without logging in. Is there a way to do that?
Or do I need to get the GUI working?
I tried switching it into graphical mode ("systemctl isolate graphical") and
the console freezes with nothing but a non-blinking text cursor at top left.
The usual virtual console switching hotkeys (ctrl-alt F1-F7) don't do
anything when it's hung like this. The system is still responsive in my ssh
session. It doesn't recover if I switch back to multi-user target so I have
to reboot it to make the console useful again. I'm guessing I'm lacking a
good video driver. (It's an R720xd I inherited and the latest drivers on
Dell's site are for RHEL 7.)
___
CentOS mailing list
CentOS@centos.org
https://lists.centos.org/mailman/listinfo/centos
___
CentOS mailing list
CentOS@centos.org
https://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Reboot/shutdown without login
Use iDRAC: https://www.dell.com/support/kbdoc/en-us/000179517/dell-poweredge-how-to-configure-the-idrac-system-management-options-on-servers On 1/11/2021 12:32 PM, Frank Cox wrote: On Mon, 11 Jan 2021 10:23:04 -0800 Kenneth Porter wrote: Now I'd like to allow someone to shut it down at the console without logging in. How do you want the person to shut it down without logging in? Some computers have a "smart" power switch pushbutton that you can program to do a shutdown or a reboot depending on how long you hold the button down. Otherwise you'll need at least a keyboard, or possibly something like a joystick or a mouse button? -- Christopher Wensink IS Administrator Five Star Plastics, Inc 1339 Continental Drive Eau Claire, WI 54701 Office: 715-831-1682 Mobile: 715-563-3112 Fax: 715-831-6075 cwens...@five-star-plastics.com www.five-star-plastics.com ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Reboot/shutdown without login
On 1/11/2021 10:32 AM, Frank Cox wrote: How do you want the person to shut it down without logging in? Some computers have a "smart" power switch pushbutton that you can program to do a shutdown or a reboot depending on how long you hold the button down. Otherwise you'll need at least a keyboard, or possibly something like a joystick or a mouse button? Keyboard. i don't have a mouse hooked up since it's currently running without a GUI. I wasn't sure if the power switch on the R720xd is monitored that way so that hitting the front panel button would shut the system down or maybe bring up the DRAC screen. ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Reboot/shutdown without login
On Mon, 11 Jan 2021 at 14:14, Kenneth Porter wrote: > On 1/11/2021 10:32 AM, Frank Cox wrote: > > How do you want the person to shut it down without logging in? Some > computers have a "smart" power switch pushbutton that you can program to do > a shutdown or a reboot depending on how long you hold the button down. > Otherwise you'll need at least a keyboard, or possibly something like a > joystick or a mouse button? > > Keyboard. i don't have a mouse hooked up since it's currently running > without a GUI. > > I wasn't sure if the power switch on the R720xd is monitored that way so > that hitting the front panel button would shut the system down or maybe > bring up the DRAC screen. > > > The simplest would be to have a person plug in a keyboard and do a three finger salute (CNTRL-ALT-DEL) on the system. Doing it once should trigger a shutdown and reboot. [That said. I have seen some systems ignore it and others do an immediate power cycle so please test.] When the hardware is booted, the DRAC screen can only be brought up on the network. > ___ > CentOS mailing list > CentOS@centos.org > https://lists.centos.org/mailman/listinfo/centos > -- Stephen J Smoogen. ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Reboot/shutdown without login
> I installed CentOS 8 on a Dell server and it's been running fine as a
> headless system, admin'd remotely by ssh. Now I'd like to allow someone to
> shut it down at the console without logging in. Is there a way to do that?
> Or do I need to get the GUI working?
>
> I tried switching it into graphical mode ("systemctl isolate graphical")
> and the console freezes with nothing but a non-blinking text cursor at top
> left. The usual virtual console switching hotkeys (ctrl-alt F1-F7) don't
> do
> anything when it's hung like this. The system is still responsive in my
> ssh
> session. It doesn't recover if I switch back to multi-user target so I
> have
> to reboot it to make the console useful again. I'm guessing I'm lacking a
> good video driver. (It's an R720xd I inherited and the latest drivers on
> Dell's site are for RHEL 7.)
You can configure a shutdown action for good old Ctrl-Alt-Del. That was
usually configured for reboor so you can just change it to shutdown.
Simon
>
> ___
> CentOS mailing list
> CentOS@centos.org
> https://lists.centos.org/mailman/listinfo/centos
>
___
CentOS mailing list
CentOS@centos.org
https://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Reboot/shutdown without login
On 1/11/21 1:24 PM, Stephen John Smoogen wrote: On Mon, 11 Jan 2021 at 14:14, Kenneth Porter wrote: On 1/11/2021 10:32 AM, Frank Cox wrote: How do you want the person to shut it down without logging in? Some computers have a "smart" power switch pushbutton that you can program to do a shutdown or a reboot depending on how long you hold the button down. Otherwise you'll need at least a keyboard, or possibly something like a joystick or a mouse button? Keyboard. i don't have a mouse hooked up since it's currently running without a GUI. I wasn't sure if the power switch on the R720xd is monitored that way so that hitting the front panel button would shut the system down or maybe bring up the DRAC screen. The simplest would be to have a person plug in a keyboard and do a three finger salute (CNTRL-ALT-DEL) on the system. Doing it once should trigger a shutdown and reboot. [That said. I have seen some systems ignore it and others do an immediate power cycle so please test.] (off topic) In old times I always was disabling CNTRL-ALT-DEL, and adding to level "S" /usr/bin/login which effectively required password when one reboots machine into single user mode. And boot from anything but system drive was disabled in BIOS, and BIOS was password protected. Not that I disagree with "nothing can stop a guy with the screwdriver". But disabling easy way to tamper with the system adds to one's ability to notice the system had been tampered with (and when). Not doing it anymore... Valeri When the hardware is booted, the DRAC screen can only be brought up on the network. ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos -- Valeri Galtsev Sr System Administrator Department of Astronomy and Astrophysics Kavli Institute for Cosmological Physics University of Chicago Phone: 773-702-4247 ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Reboot/shutdown without login
On 1/11/2021 11:37 AM, Valeri Galtsev wrote: In old times I always was disabling CNTRL-ALT-DEL, and adding to level "S" /usr/bin/login which effectively required password when one reboots machine into single user mode. And boot from anything but system drive was disabled in BIOS, and BIOS was password protected. Not that I disagree with "nothing can stop a guy with the screwdriver". But disabling easy way to tamper with the system adds to one's ability to notice the system had been tampered with (and when). Not doing it anymore... That makes perfect sense in a company data room. My situation is a roommate that wants to power if off to sleep and I've left for an emergency and didn't have time to power it down myself. ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Reboot/shutdown without login
> That makes perfect sense in a company data room. My situation is a > roommate that wants to power if off to sleep and I've left for an > emergency and didn't have time to power it down myself. Usually pressing the power button should do the trick . Best Regards, Strahil Nikolov ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
[CentOS] LTS
Hi, CentOS Linux can continue as Fedora LTS or something similar with a five-year life cycle. After five years, users can opt for paid upgrades. We can also work with System manufacturers to pre-install the free LTS on their products, which will increase our user base. --- Lee, Community User. ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] LTS
On Tue, Jan 12, 2021 at 12:00:00PM +0530, Thomas Stephen Lee wrote: > > CentOS Linux can continue as Fedora LTS or something similar with a > five-year life cycle. After five years, users can opt for paid upgrades. > We can also work with System manufacturers to pre-install the free LTS on > their products, which will increase our user base. Who is this "we" you speak of? John -- Children's talent to endure stems from their ignorance of alternatives. -- Maya Angelou (1928-2014), American author, poet, and civil rights activist, I Know Why the Caged Bird Sings (1969) ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] LTS
On 1/11/2021 10:30 PM, Thomas Stephen Lee wrote: Hi, CentOS Linux can continue as Fedora LTS --- so far it appears going forward RHEL will be the only LTS. ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
