CentOS is an Enterprise-class Linux Distribution derived from Redhat Enterprise Linux sources freely provided to the public.

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PBX randomly loses network connectivity and restores itself

I'm using a QBX appliance, which is just a microATX desktop system with FreePBX connecting to asterisk and some other slapped together stuff running on CentOS 5.4. It's horribly out of date (which I ...
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1answer
858 views

Unable to make sshd start at boot time on centos 6.4 . It starts ONLY after I login from console

I have installed centos 6.4 on a desktop and wanted to access it mostly remotely. For this, I tried ...
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1answer
141 views

Scrambled Xen Console on dom0

I installed Xen using the recommended procedure on Ubuntu's site using motherboard Supermicro X7SBL-LN2 and Ubuntu 13.04 amd64. After the installing it and rebooting my console looks like this: ...
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2answers
436 views

Moved some files unable to use mv now

I accidently used mv mymods /* * . Now i am unable to undo it or either use any command. How do i fix that? I was in directory name /home/nginx/crap [root@somehost /home/nginx/crap]# mv mymods /* * ...
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2answers
189 views

Using a specifing gateway for a packet. (CentOS/RHEL)

I have just setup a machine which has two NICs, one for private network and the other one for public network which has a real IP assigned to it. DEVICE=eth0 HWADDR=XXX TYPE=Ethernet UUID=XXX ...
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3answers
6k views

What is the service that's responsible for automounting a USB drive in CentOS 6.4?

I know of the legacy Linux way of mounting a USB stick or drive: mount /dev/sdb1 /mnt/ But in some CentOS 6.x installations I saw, you just insert the USB stick and CentOS automagically mounts it, ...
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7answers
541 views

Determining Linux architecture from files

I have a system with an unrecoverable /usr partition. Terrified the drives are going bad, I've got it booted into a LiveCD environment, and I can't remember what the install architecture was, the ...
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1answer
854 views

Red Hat Network (RHN) and package updates

I was just reading about Linux servers and Red Hat Enterprise Linux. What exactly is the Red Hat Network (RHN)? From what I've gathered, you subscribe to it to be able to update your system. Does this ...
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2answers
2k views

Installing Dovecot and Exim on CentOS 6.4

I've been looking for some guides on setting up a secure Dovecot and Exim mail server setup on CentOS 6.4, however it seems there's nothing out there. Does anyone know of any guides - or - if someone ...
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1answer
232 views

Perl dependency issue

I've installed CentOS 6.3 (i386) recently. It has two perl binary /usr/bin/perl (v5.10.1) /usr/local/appx/perl/bin/perl (v5.8.8) My question: Is it possible to install some other funtinonality ...
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2answers
2k views

Sign a module after kernel compilation

I've built a kernel in tmpfs, then I rebooted. Now I see a message when I compile the 3rd party module, NO SIGN [M] XXXX.ko How can I get it signed? The key pair generated during rpmbuild is lost ...
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3answers
806 views

Colorize Bash Console Color

I need to be able to set my CentOS 6.4 bash prompt color to yellow. I've managed to find where to set this (.bashrc) and the ANSI color for yellow (\e[0;33m). I've setup my prompt as follows: ...
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1answer
60 views

Where to put generated certicate for user [duplicate]

I was following this tutorial and I want to implement mutual authentication between server and client, where server and CA (certificate authority) is the same thing. I reached the last step and I ...
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0answers
222 views

Wifi module doesn't work anymore in CentOS

Like the title said, my wifi module doesn't work anymore. After a kernel upgrade. The wifi LED is permanently red. I can only use a wired connection. EDITS I add only the lscpi output because the ...
5
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2answers
2k views

rsyslog drops messages excessively

We have a CentOS machine acting as our syslog server. I recently noticed that the machine has been dropping large numbers of syslog messages at times. We have over 250 routers and switches, as well ...
3
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2answers
478 views

rpmbuild: Is there a way to specify recommended packages

So, search as I might, I can't find anything about specifying recommended packages in a spec file. I wouldn't even consider it possible if I hadn't seen it in the spec file for Mono 2.10.9. It reads ...
2
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1answer
187 views

rpmbuild: How can I 'Require' one package *or* another

So, I'm trying to fix a spec file right now for rpmbuild. On Suse, it looks like the X11 library development package is named "xorg-x11-libX11-devel" while on CentOS it seems to be named ...
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1answer
1k views

Can't load IA 32-bit .so on a IA 32-bit platform

I'm trying to install an 32_bit_application on CentOS (64-bit), while running the setup.bin file it return the following error Invocation of this Java Application has caused an ...
2
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1answer
604 views

Running 'make test' on an individual module for Python 2.7.4 build

I am working on building Python 2.7.4 on CentOS 6.4. When running the make test step, the test_gdb step fails, and I would like to get some more info as to why. Build commands I'm running: ...
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3answers
283 views

What process is running before I even get a prompt?

When I log in to a specific server I see the following: Note that I get get Last login: ... information but no prompt. I hit Ctrl+C and only then do I get my prompt, thus proving that my username ...
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1answer
1k views

How can I disable or limit disk cache memory usage globally?

The disk cache takes too much memory in my OpenVZ VPS. How can I disable or limit disk cache memory usage globally? I am using CentOS 6.4.
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1answer
504 views

Configure Centos 6.3 to direct all traffic through a proxy server

Is there a way to configure CentOS 6.3 to direct all internet traffic through a proxy server? Forgive me if this is a really dumb question, I know very little about how proxy servers work and how ...
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1answer
5k views

Auto-restart an process when it crashes

I have an app that I need to autostart when the OS starts. I am running in a CentOS 6, so I am using a LSB init script placed in /etc/init.d. So far this is fine and working. Now....besides that, ...
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2answers
693 views

Running Mono on CentOS 5 CLI

I have vps server (virtual private server) running on Linux CentOS 5 32 bit , I installed vncserver X-Windows , GNOME and KDE environment and I connect to the VNC server from vncviewer in my Windows 7 ...
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1answer
2k views

Centos 6 stuck at loading splash screen after successful installation

I'm trying to dual-boot CentOS with Windows 7. My current disk layout are as follow:- /dev/sda1 - Windows 7 /dev/sda3 - NTFS partition I created a standard partition for /boot and that was ...
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1answer
5k views

Install Desktop on Centos 6.3 remote server

Through our hosting provider, we can create servers running CentOS 6.3. However, these installs are meant to be used as servers that are accessed remotely. They do not come packaged with a GUI ...
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0answers
1k views

CentOS, Django, mod_wsgi permission error

Running CentOS 6.4, Django 1.5.1, and mod_wsgi 3.2. I've set up a simple server configuration but when I restart the httpd service I get the following error in the logs: (13)Permission denied: ...
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0answers
422 views

Trouble communicating with FTDI FT245RL on ttyUSB0. works fine on Win7x64

I purchased a Sainsmart 4 channel USB relay board which seems to be based on a FTDI FT245RL chip. I should be easy enough to use. when you plug it in it appears as a serial port (VCP). You send it ...
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1answer
2k views

What caused my CentOS 6.4 box to reboot itself?

I noticed that the MySQL daemon running on my CentOS 6.4 machine was suddenly not running anymore. I checked the MySQL log, but didn't see anything relevant: 121229 22:17:45 mysqld_safe mysqld from ...
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0answers
144 views

uploading from Netbeans to remote CentOS server failed

I have a php web application on Netbeans on my Ubuntu , and server is CentOS on a virtualBox . Suddenly uploading to server stopped and I'm getting these errors for non-root user : Failed: file ...
0
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1answer
3k views

How to remove Oracle Wallet using orapki?

Hi i'm on Centos using oracle 11g And i've created a wallet using : $ orapki wallet create -wallet /u01/app/oracle/admin/DB11G/wallet -pwd WalletPasswd123 -auto_login Now i want to remove it to ...
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4answers
116 views

any feature on linux like Perfermance Counter on Windows servers?

I have a tomcat web application, when invoking an unstable remote API, I want to get realtime http request time at any time. On windows server, I can use Performance Counter, does centos provide ...
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2answers
6k views

How to install CentOS 6.4 on Mac Mini?

I have bought a new Mac Mini, and would like to use it as a Linux server. Now I'm trying to install CentOS on it. I downloaded CentOS-6.4-x86_64-netinstall.iso and booted the Mac Mini from a ...
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2answers
395 views

Monitoring script started by rc.local

We have a C program which is started using rc.local´. We added a line like this: /usr/local/bin/pc to the rc.local file. pc is a compiled C program. Everything is working fine at the moment. What ...
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3answers
3k views

libxml2.so.2: cannot open shared object file: No such file or directory

I am using CentOS in which i had removed libxml2 accidentally now it was showing the following error as follows: There was a problem importing one of the Python modules required to run yum. The ...
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1answer
109 views

OpenVPN problem

I've Configure an OpenVPN (2.0.9) on a CentOS 6.2 (2.6.32-358.2.1.el6.x86_64) to accept OpenVPN client connection. But when I try to connect from Windows 7 by OpenVPN client tool it return me some ...
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5answers
18k views

USB mount doesn't work on Centos 6.4

I have a problem. After an update, my USB drives are not mounted automatically and I'm unable to mount them manually... The output of my fdisk -l command is: Disk /dev/sdb: 15.8 GB, 15762194432 ...
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1answer
329 views

Unable to find an option to install CentOS 6.4 (64bit) in command line (linux text) for Asterisk

I am trying to learn Asterisk, so I downloaded the latest CentOS 6.4 (64bit) to install on VMWare Workstation 9. When I started the installation it is not giving any screen to start the installation ...
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3answers
2k views

Reinstall package in CentOS

I am trying to install a perl package and getting the following dependencies error: [user@localhost Downloads]$ rpm -Uvh ImageMagick-6.8.4-9.i386.rpm error: Failed dependencies: libltdl.so.3 is ...
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0answers
385 views

Centos 5.3 - Need to use 4 com ports without resource conflicts (system has 6 com ports)

we hope to use 4 serial ports together on Centos 5.3 (could not upgrade to newer version due to application limitation). COM1 and COM2 works perfectly. We use echo to output to customer display to ...
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1answer
361 views

How to SSH apache user from a remote guest server on VirtualBox with host-only network?

I have two CentOS virtual machines on VirtualBox . one of them let's say CentOS-1 holds my Web application code. Second is CentOS2. I have two network connections between these two servers : Bridged ...
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2answers
10k views

rsync error: some files/attrs were not transferred

I'm trying to move my emails Maildir from an old centos server to a new debian server. rsync -avz /home/me/Maildir ssh root@ipaddress:/var/vmail/me/Maildir I tried to copy an 8gb account, didn't ...
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2answers
1k views

file still read-only after a mount --bind from a rw partition

I use mount --bind to "overlay" a file from one ext4,rw filesystem onto another file in ext4,ro filesystem. For example, /etc/hosts is on a read-only / partition, but I have another partition where ...
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0answers
867 views

Why doesn't /etc/udev/rules.d/70-persistent-net.rules exist on virtual machines?

CENTOS 5.9 I'm curious, why doesn't /etc/udev/rules.d/70-persistent-net.rules exist on virtual machines with CentOS 5.9? Is there an alternative file name for this when using a virtual machine?
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1answer
1k views

I opened a port with iptables but still doesnt work

I have a CentOS installation as a guest VM with VirtualBox. I have two ethernet interfaces, eth0 with NAT and DHCP, and eth1 with Host-only adaptor and static IP. I have oracle installed in this ...
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1answer
2k views

adding home directory after -M option

First off I'm new to Linux. I have created a new user called "ginny" with -M option. Now I'm trying to assign a home directory with usermod -d /link/to/directory ginny but it doesn't assign a home ...
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1answer
4k views

GRUB reported “error: file not found.” when booting CentOS 5

I installed CentOS 5.3 by using a 4GB USB disk on an old PC that I used run a Debian on it. After a series of housework on the fresh system, I reboot the system using: sudo shutdown -r now After ...
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0answers
63 views

How can I add PAM functionality in netkit-rsh-0.17

I am using CentOS. In my project, that is working on a network, I need an rsh utility. I downloaded netkit-rsh-0.17 for that and until recently all worked fine. But now I found that this utility ...
2
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0answers
206 views

Setting up surround sound with optical out

I have centos 6.3 running on this pc. the built in sound card is detected normally and is a 7.1 card with all speakers listed. It includes a optical out as well as hdmi for the built in video. It ...
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1answer
1k views

wget hangs AFTER download complete, on exit_group

I am running CentOS release 6.3 (Final). This issue occurs for every VM on my server. When connected over SSH, wget hangs after download certain URLs. I am running the following command: wget ...