General :: Disabling Interactive Boot In Red Hat / CentOS
Feb 12, 2010
How can I disable the interactive boot up process? Also what is the pros and cons to doing this? Will this affect my being able to get to runlevel 1?
I have been googling it but not really clear on the pros/cons etc.
I am talking about a server class machine that is in a locked room, not a desktop.
I know it can be turned off in /etc/sysconfig/init # Set to anything other than 'no' to allow hotkey interactive startup... PROMPT=yes
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May 19, 2010
Recently i've upgraded my fedora 11 to 12 using the preupgrade command and now I have a problem booting! when i start the interactive boot it hangs after trying to run the service local, it looks as if its trying to boot because the cursor blinks really fast then blinks normally after a few seconds. no error was stated during the event. what seems to be the problem here?
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Jan 11, 2010
I'm still quite wet behind the ears with CentOS/Unix. What I'm trying to do is to setup a non interactive user, where I login with an interactive user and su to the non interactive. I have set the non interactive with /sbin/nologin (through the GUI), but when I login with the interactive user and su to the non interactive user I get the following:
"This account is currently not available".
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Jun 19, 2010
I want to install ubuntu 9.10 into other partition, but I want the win xp boot.ini file to configure my boot settings, not the GRUB. First I want to ask is it possible to install ubuntu, but add a boot entry in boot.ini? If not, then I know how to remove it, i found a file called ms-sys, with it I can remove GRUB. So let's say grub is no more, what should be an entry to ubuntu. When it was installed into Windows it was
Code:
c:wubildr
now what should I enter, my guess would be
Code:
m:ootgrubmenu.lst
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Jun 15, 2010
I've been fiddling about with vortexbox (the one before 1.4 I think), for a while. This is a music ripping and server rpm setup using Fedora 11 as the base.
As it was on a test machine, decided to try changing the logical volume sizes of LogVol00 and LogVol02 to fit a few more cd's on 02 before getting a new pc (just to see how it works).
Logged on and opened up the graphic version of lvm (using gnome). Then selected the LogVol02 logical volume, select edit, changed name to LogVol02-Storage, saved and logged out. Rebooted vortexbox since then its been unable to start properly (is this a kernel panic?).
Read up a lot on lvm on the net, have access to Fedora 11 disk 1, so logged on. Eventually managed (I thought to) to change LogVol02-Storage to LogVol02 using lvrename.
However, still refuses to boot completely.
The message it gives is as follows (sort of): Welcome to Fedora Press '1' to enter interactive startup
Setting up Logical Volume Management: 3 logical volume(s) in volume group 'VolGroup00' now active
*** An error occurred during file system check.
*** Droping you to a shell; the system will reboot when you leave the shell.
Give root password for maintenance (or type Control-D to continue):
Loving vortexbox appart from this. Will it be easier just to reinstall everything? If so, is there a way of listing all the changes I've done so I can reproduce (I'm thinking of just looking at all the commands I ran on the CLI).
Otherwise, is there a way of listing all of the commands I ran in terminal and piping them into a file so I can see what I need to do to rebuild after reinstalling?
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Apr 8, 2011
I've run into this problem this week. The other night a power supply failed on a different system and appears to have surged the UPS which it and some other computers were plugged in to. One computer was fine, but the RAID server that is used for backups ended up with a bad disk and this "Disabling IRQ #169" message now shows up during boot, right after starting udev and setting the hostname. The system then sits there for 3-5 minutes before repeating a scroll of "/etc/rc.d/rc.sysinit: line 966: /bin/usleep: Input/output error"
I have booted with linux recovery from the CentOS DVD in order to replace the drive that was damaged. I rebuilt the raid array and all the data seems to be fine. There is another message though after "Red Hat nash version 5.1....." no raid disks and with names: "isw_bf jihdchhi_Hostname" failed to stat() /dev/mapper/isw_bf jihdchhi_Hostname
I was considering doing a complete reinstall of CentOS but if there is another solution I would much appreciate it, is it perhaps an issue with Grub not being able to find the updated array? As it is, it is impossible to boot the system except for using a live CD to do it.
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Apr 2, 2010
I have a Centos NIS server that is working fine with other linux clients. i need to have a Solaris 8 client bind to the NIS domain and found out that Sol8 does not support MD5 format passwords that the NIS master is generating. so i am trying to disable the MD5 encryption on the nis master and it does not seem to work. i run this command
authconfig --disablemd5 --enablenis --nisdomain=lab --updateall
and it restarts portmap and nis services ok. on the master server i then do a yppasswd username and a make passwd and it still uses the 34 char password format. what do i need to do to disable MD5 passwords in a centos nis server?
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Mar 30, 2010
I ran into this today accidentally turned on networkmanager and it took it upon itself to rewrite some things and proceeded to make any DNS lookups on my server Especially those reverse DNS for SSH and SFTP take so long they would just time out instead of completing.. Disabling networkmanager did not undo the damage either. Short fix, Erase your resolv.conf file and add 2 lines to it as so, your nameservers!
nameserver xxx.xxx.xxx.xxx
nameserver yyy.yyy.yyy.yyy
save, and run the following commands
service network restart
service httpd restart
service sshd restart
Mine had a search line added by networkmanager and some others, when i reverted it back to as above, almost instantly after restarting the services the systems lookups were once again, lightning fast. DNS lookups were taking upwards of 20 seconds for unknown reasons after this happenned
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Jun 6, 2011
I can't figure out how to prevent Zend Server starting at boot up. My temporary solution is to issue the following after boot-up:
Code:
sudo /usr/local/zend/bin/zendctl.sh stop
I'd like to:
1. Prevent it from starting during boot
2. Create two launcher icons to Start and Stop Zend Server
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May 20, 2010
In Debian, how can I disable Apache2 from starting automatically at boot time?
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Feb 4, 2011
I have a situation where I am in a non-interactive shell. I have tried from within my non-interative shell to spawn an interactive shell but my output still does not goto me. Isn't there a way I can somehow go into /proc or somwhere and make the output my /dev/tty1? Or some way else to remedy this?The situation arises because I drop from my restricted shell environment (a sort of CLI interface), into the actual Linux shell. I cannot change the code of the CLI environment I am just faced with being in the linux shell environment and its non-interactive. Its very annoying to have to put > /dev/tty1 after every command I type.
Not to mention it seems damn near impossible to get pagers like more and less to work properly when your in a non-interactive shell.
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Aug 11, 2010
Is there a non-interactive way to change a user's passwd short of using expect? I'm using Debian.If not, then I guess I need to get this expect script working:
Code:
#!/usr/local/bin/expect -f
set username $env(UNAME)
[code]...
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Jul 17, 2011
I'm trying to stop all boot time messages from appearing -- basically I'd like to have a simple blank screen from grub to xdm.
I tried everything -- used the "quiet" option in grub's config, added dmesg -n 1 to rc.local, changed console=ttySx, set kernel.printk in sysctl.conf to 4 1 1 7, and even eradicated rsyslogd altogether... to no avail. I still see all sorts of messages on my screen.
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Mar 24, 2011
how can I make my sh interactive by default. That I don't have to always type --interactive everytime I log in. I want it to be always interactive. #2- how also do I turn of --posix mode parmanently ? Is there a line I need to drop somewhere or what do i do.
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Sep 6, 2010
Possible Duplicate:Forward SSH traffic through a middle machine.I am looking to get an interactive ssh session on a remote machine, but must login via a gateway.For example, right now I do the following:
@local % ssh <user>@<gateway>
@gateway % ssh <user>@<remote>
Is it possible to achieve the same thing in a single command from my local machine? I have tried:
@local % ssh <user>@<gateway> 'ssh <user>@<remote>`
From the output i am indeed able to login, but do not get an interactive session. I took inspiration for this attempt from using ssh to run a command remotely.
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Jun 14, 2011
In interactive mode (in Octave, gnuplot, R, etc.) I occasionally press Control + z by mistake. This pauses the program and kicks me back to the terminal.Is it possible to re-enter the original interactive mode (with all the stored variables)?
To reproduce:
~> octave
octave:1> a = [1:10];
octave:2> ^Z
[code].....
How can I recover my session with the variable a defined?
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Apr 16, 2010
I am trying to assign a user account on RHEL5 Server a non-interactive login but I am not sure if this is the correct command: useradd useraccount -s /sbin/nologinAfter I issue this command, I try to log in with this account and it says the "Administrator has disabled this account" when I enter the password. Does any one know if the command above is correct?
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Aug 24, 2010
I wish to prevent some programs from "phoning home", and to allow other programs to access only specific web servers.Is there any way to interactively allow or decline outbound communication from individual programs on Ubuntu?
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Sep 28, 2010
I wanna delete a directory with its files and I wanna do that as follows: rm -r dirToDelete Unfortunately, I always get asked for EACH single file if I wanna delete this because it is write protected.... Is there a way to suppress this feedback message so that just the whole directory with its contents disappears?
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Jul 13, 2010
I am trying to figure out why top run in batch mode outputs so many more lines than when run in interactive mode. For example:
[Code]...
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May 24, 2010
My execution environment is Linux steamboy 2.6.31-21-generic-pae #59-Ubuntu SMP.If I log in and run a program, the program works properly. The program is a shell script, which executes an environment file, so that path and library settings point correctly.If I have cron run the same program as the same user who logged in, one of the libraries cannot be found. I have sourced .bashrc and the same environment setting file, even though .bashrc executes the same environment file . /home/amr/bin/informix_env.sh
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Jan 10, 2011
This is an old question asked many times, which, however, is NEVER answered directly in any manual I've checked. So...I'm writing a bash install script (instead of a rpm or .deb package) that must be run by a normal user. change to superuser (asking for password and receiving it) and the rest of the script to be executed in the superuser mode in order to install what I mean to install.I know how `sudo ...` or `su `root"..."` or `gnome-terminal -e ...` can achieve this purpose by creating certain batch files and then give them as argument to these commands. That's NOT what I'm asking, however.I want to know how I can make the script interactively switch to superuser mode and go on running the rest of the script (can be a lot of code) in that mode. I don't mind if it oens a separate terminal window to do that; just how can that be achieved?
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Aug 30, 2010
If I have an interactive program, e.g top, which, after launch, can be fed with key strokes and changes its behavior, for example, after launching top and then pressing "1", you can see the CPU utilization per core. I was wondering if there is a programmatical way to do so, so I don't have to press "1" every time. I would think it is an easy task, but so far my attempts have failed.
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Sep 30, 2010
I want to write the sequence of operation of a user interactive process (Question asked by the process and answers user entered) in to a log file.
I used tee command, Precess1 | tee -a FileName
This write only the Question asked by the process. Does anybody know how to write the user inputs also to the same file, synchronized?
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May 11, 2010
I have OpenSSH_5.5p1 on my Fedora 10.I generated a key pairs using ssh-keygen and added the pub key to the remote machine that I wanted to connect. When I try to sshing, I am getting : Permission denied (publickey,keyboard-interactive).When I try to connect to the machine itself also getting the same error.
sshd_conf :
Protocol 2
HostKey /etc/ssh/ssh_host_dsa_key
[code]....
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May 17, 2011
Got 3 computers connected by ethernet to a router modem. At this router modem only port 80 is forwarded to a web server (one of the 3 computers). Now I realized several times a port scanning attack displayed at interactive firewall of Webserver ( Apache at Mandriva LINUX ). Actually the message is port scanning attempt of heanet (actually this names are different mostly). I wonder how to figure out is this portscanning attack possible through port 80 or is the modemrouter (Draytek VIGOR) misconfigured, compromised or one of the other 2 machines (Windows) are compromised and attacking the server inside intranet?
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Oct 29, 2010
I'm forging a gateway server, We have 2 Internet connection that goes to a load balancer router, and goes to my centos server and from our server goes to a switch for Internet distribution or routing.
OS-CentOS 5.5
[root@server etc]# uname -srio
Linux 2.6.18-194.el5 i386 GNU/Linux
My eth0 and eth1 has the following configuration and IP
[root@server etc]# cat /etc/sysconfig/network-scripts/ifcfg-eth0
# VIA Technologies, Inc. VT6105/VT6106S [Rhine-III]
DEVICE=eth0
BOOTPROTO=none
[code]....
Disabling IPv4 packet forwarding but i already changed it to 1 at sysctl.conf One of the online forum says i need to configure the named.conf deleted some and run it(named.conf) and successful but still when I run network service I still get the :"Disabling IPv4 packet forwarding: net.ipv4.ip_forward = 0" The network is getting the IP range but it doesnt get any Internet connection.
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Apr 2, 2009
In CentOS 5.3 there is a new "Smart Card Manager" window that pops up when I log in to KDE. Is there any way to disable it?
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Mar 31, 2010
I'm using Linux Kernel version 2.6.33 on a server with Intel Xeon X5570.
I assume that Intel's DCA is already enabled on my system, because I see
Code:
I would like to test the effects of with and without DCA. How can I disable DCA?
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Jul 14, 2011
When I plug in a removable device, KDE automounts it, but I prefer to do this manually (also perhaps not liking the idea that any user could plug a device in and have it mounted). I've searched around and looked at KDE -> System Settings -> Removable Devices, and "Enable automatic mounting of removable devices" is already unchecked
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