Questions specific to the CentOS Linux distribution. Use this tag if your question relates to how the CentOS distribution affects your problem; do not use it if you just happen to be using CentOS and your question is about a specific configuration detail or syntax.

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3k views

checking sendmail status as NON root user

I am in the process of converting to CentOS 6.5 from 5.5 and need a way to check if sendmail is on or not. For reasons I don't want to go through, I need to be able to check if sendmail is ON as a ...
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0answers
1k views

X11 connection rejected because of wrong authentication — on CentOS, for all users (including root)

I'm configuring a small computing cluster with CentOS. The last step is setting up X11 forwarding, and here I find problems that I cannot solve. On all compute nodes except one, I can set up ...
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0answers
643 views

Improving TCP performance over a gigabit network

I have two machines both network cards speed is 10Gbps. The inbound bandwidth between the two machines is 10Gbps, the outbound bandwidth internet bandwidth is 500Mpbs. Both machines are using public ...
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0answers
1k views

Apache server: permission and symbolic link problem

I am using CentOS(Linux 2.6.32-431.11.2.el6.x86_64). I am trying to create an Apache2.2.15 web server. Every thing configured very well. My DocumentRoot is the default location i.e. /var/www/html. I ...
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0answers
5k views

mysqld dead but pid file exists

Webserver was running fine for weeks then suddenly: I can access, but I am unable to log into Webmin I can access Magento, a php-based storefront application, but I am no longer able to log in and ...
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0answers
297 views

ssh-agent on CentOS 6.5 keeps “disabling” itself

I recently installed git on my CentOS 6.5 system. During the process I setup a key/pair for GitHub so I don't have to enter a password for every git process. I did this by adding the rsa file to ssh-...
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0answers
81 views

probably gfs2 problem

We have a Mail Server (CentOS 6.5) with these component: Postfix Dovecot Mysql MailScanner (spamassassin,clamav) GFS2 Partition Last night the server crashed and this is the kernel logs before ...
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0answers
40 views

Can a RHEL 6.4 DS sync with a CentOS 5.4 DS

I have two CentOS 5.4 Directory Servers that sync information on a daily bases. I'm wanting to replace them with two RHEL 6.4 Directory Servers. Before the existing two are decommissioned all four ...
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0answers
2k views

CentOS 6.5 will not sleep after period of inactivity

I've recently upgraded my Ubuntu 12.04 LTS to CentOS 6.5. This is a desktop PC (non-server) that I would like to sleep/power down after a period of inactivity. I have the following settings in my ...
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0answers
254 views

Forward Only Email Server

I have a custom domain (I'll use the real domains cause I'm desperate at this point :) ) www.grantorino.io, and I want to forward all email addresses sent to yehiasalam@grantorino.io to yehia.asalam@...
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0answers
211 views

Create partition on CentOS server?

I have a headless CentOS server that I'd like to create a new partition on so I have a separate boot and data partition. I have an existing server with the setup that I want to achieve and running ...
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0answers
1k views

How to install Liquidsoap & Airtime on CentOS 6.5?

That's the question, i already try some tutorials but i don't get any one to works What repositorys are needed? Is there any repo than i can add than have it to install it directly? Is there any way ...
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0answers
322 views

How to disable PAE feature of kernel, after installation?

I am using RHEL 5.3(x86) as a base platform for my development purpose.My machine's spec is as follows: Intel, Core-i3 Processor @ 2.5GHz 4GB RAM Problem is whenever I am attempting to install the ...
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0answers
85 views

what interface does lpsched provide that cups does not?

Work has a Linux stock/erp custom system that uses the Unix System V (Solaris, SCO, HP-UX) lpsched program that someone who used to work here compiled for RHEL/CentOS 5 i686 (I have no idea why or how)...
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0answers
512 views

Service httpd is failing to start - fcgid can't create shared memory

I'm not sure why, but when I try to start the httpd service, it will not start. Server config: OS: CentOS 5.10 PHP: 5.5.7 Apache: 2.2.3 I built mod_fcgid from source, put it into the /etc/httpd/...
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0answers
5k views

LTO tape drive: “/dev/st0: Inappropriate ioctl for device”

I can write to the tape drive (tar -cf /dev/st0 file) and retrieve files from the tape drive (tar xvf /dev/st0 file). But the problem is when I attempt to use the 'mt' command to check the status of ...
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0answers
3k views

How to install PHP 5.2.4 in CentOS release 6.5 (Final)?

Folks I need to install PHP 5.2.4 in CentOS release 6.5 (Final). My souces list are: # CentOS-Base.repo # # The mirror system uses the connecting IP address of the client and the # update status of ...
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0answers
455 views

CentOS VPS not starting after installing zPanel

I've had some trouble earlier installing zPanel, but then I was told that I've been using the wrong package, I was supposed to use the 32-bit version, but kept trying with 64-bit. After figuring that, ...
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0answers
666 views

how to set up ldap and trac

I have set up kerberos authentication with trac which works well. Now I want to use AD groups and users for trac permissions using the trac plugin Configuration for LdapPlugin. I have been following ...
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0answers
83 views

Configure Cent OS 6.4 so that desktop persists after closing VNC session?

I want to configure my newly bought VPS to be able to automatically boot into the Xfce window manager and let users connect to it via VNC and still keep the window manager running after the user ...
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0answers
202 views

Firewall config prevents hibernate connecting to postgres in CentOS6.3

I have an operating environment in CentOS 6.3 that has tomcat7 and postgres9.2 installed. There is just one web application deployed in tomcat that tries to establish a connection from localhost to ...
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0answers
148 views

Where is the default icon used by Gnome when no icons are found?

Just to experiment, I moved the folder /user/share/icons/ away, as in saved it on a USB drive and deleted it from Linux. Now, all icons are shown as the default "white" icon. Where is this icon ...
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0answers
780 views

FFmpeg-php installation error on CentOS 6 x64 bit

I'm trying to install ffmpeg and ffmpeg-php. FFMpeg installed perfectly. When I try to install ffmpeg-php, I'm running ./configure and it's configured fine. However, when I run make it gives me the ...
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0answers
724 views

Restore a Linux backup on virtual machine

I have made a backup of my Linux OS in a bacukp.tgz, the OS is Centos 6.4. Now I want to create a new VMWare virtual machine from it. Do I first need to install Centos from CD or ISO, and then ...
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0answers
2k views

How can I enable fail2ban and mod_secure logs to appear in logwatch on centos 6.4?

I have logwatch working fine but I don't see the fail2ban and mod_secure logs appearing in my logwatch logs. How do I enable this? What do I need to do to logwatch's configuration file? Below is the ...
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0answers
2k views

putty connection works but ssh command line refuses password authentication

I'm struggling quite a lot around ssh tunnels today. First, here is my configuration: My local machine, a PC with windows XP (ip=l.l.l.l) My remote server, with a CentOs 5 installed (ip=x.x.x.x) ...
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0answers
536 views

How to add my own created certificate authority to system trusted repositories

I was told that I can add my created CA to trusted repositories/authorities in my system instead of adding it from browser and configuring in in ssl.conf. Yet I can't find anything similar on the web....
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0answers
284 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 ...
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0answers
520 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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0answers
290 views

403 Forbidden on Sub-Folders

I am a Linux newbie and decided to do a LAMP install to start getting more familiar with it (as our company is moving more towards nix these days). Everything went great and PHPMyAdmin, MySQL, Apache/...
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0answers
1k views

Unable to install Atheros AR8161 Ethernet controller driver for centOS 6

I've installed CentOS 6.3. However, eth0 does not show up on ifconfig. So I figured out that I need to install alx Ethernet driver from here. Since my internet is not working, as ethernet drivers are ...
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0answers
2k views

rc.local not being executed when os boots up

I have a script that needs to be run when os boots up. I added it to /etc/rc.local. It was working fine for sometime but now rc.local does not load at boot time. When i checked the permissions on the ...
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0answers
238 views

Centos 6.2: Unable to open terminal after vbox save state

I'm experiencing this issue frequently. Usually, I work on my Centos 6.2 in VBox for a while and then close it by saving state (going to other machines or doing host work). Then, I resume my session ...
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0answers
4k views

centos 6, hostname won't resolve, dns issue, loop detected

I've searched everywhere and tried all the suggestions that I've seen, but I just can't get this to work now (it was working before). This is the first time I've ever installed a test server that I ...
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0answers
103 views

Allocating resources to VPS's

I need a layman's term definition of these parameters and what they do in terms of allocating resources to servers, as I'm having issues with the VPS's that I set up, as Java seems to be unable to set ...
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0answers
484 views

Fail2ban showing error Unable to contact server. Is it running?

We start fail2ban in centos using this command service fail2ban start but when we run service fail2ban status we get as below? What could be the mistake ya? Fail2ban (pid 2810 2813) is running... ...
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0answers
199 views

iSCSI on startup

I've configure iSCSI but CentOS 6.3 is unable to recognize if on startup. Here is fstab config: /dev/sdb1 /home ext4 _netdev 0 0 Here is iscsi.conf ...
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0answers
102 views

How to install master branch of freeradius on Centos

Could someone take me through the steps to install the master branch of freeradius on a fresh Centos 6 installation?
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0answers
492 views

Editing isolinux leads to kernel panic error in Centos Live CD

I downloaded a CentOS Live CD and tried to customize features on it. The CD boots fine if I use it "as-is". If I edit "isolinux.cfg" to edit the change the title of the CD or the automatic boot time, ...
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0answers
479 views

Set default Soundcard Centos

How do I set my default soundcard on Centos/Linux? I have two soundcards installed on my system and it always detects the wrong one, upon boot.
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0answers
125 views

Naming process in init scripts

I'm trying to write an init script that will start a service that needs to have started postgresql server before. Bellow is the postgresql's init header: #!/bin/sh # # postgresql This is the init ...
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0answers
555 views

RHN Satellite scout won't push

My RHN Satellite (Spacewalk) server is having issues with monitoring. The Spacewalk Monitor Scout will not push out successfully. It always stops with a Request Expired status. I can't seem to find ...
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0answers
2k views

After install Centos 6.3 from USB, it doesn't boot

I installed CentOS on my machine from my USB. I did a minimal CentOS USB drive with UNetbootin. After I install the CentOS, when i try to reboot, it does not starts. I have only the cursor blinking on ...
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0answers
238 views

Multiple Sessions and 1 is slow

Setup is a Centos 6 x64 server and a Windows 7 client running putty. Multiple sessions are opened to this same server from the same client. Periodically, one of these sessions slows to a crawl and ...
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0answers
720 views

Install CentOS in a VirtualBox to a Compact Flash and use it on a mini PC

I got into a very specific situation and want to get to know your opinions. I have got a mini PC with Intel Atom processor which should run CentOS with an upgraded kernel to 3.x and some ...
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0answers
949 views

I can't find my tape library changer under centos 5 with a quantum scalar i40

i have a quantum scalar i40 connect on a centos 5 machine trough SAS interface. I fight with it since a while because the media changer does not work. I finally understood yesterday that the system ...
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0answers
381 views

ffmpeg: error while running with libx264

Main code: ffmpeg -i 2269801.avi -threads 0 -vcodec libx264 -b 900k -acodec libfaac -ar 44100 -ab 96k -ac 2 earthgirlsareeasy1.mp4 [libx264 @ 0x16cdde10]broken ffmpeg default settings detected [...
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0answers
291 views

i386 libtool conflicting with x86_64 libtool when installing Handbrake

I've been trying to install Handbrake on centos 5.8 with the help of some different guides. I'm running x86_64, and whenever I try to install packages necessary to build the binary, the arch ends up ...
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0answers
1k views

Hanging at “Running Transaction Test” when trying to install php-soap

I have here a CentOS 5 and I'm trying to run yum install php-soap but the installer hangs on and the last step is Running Transaction Test. I found out that NFS shares are the problem. See here or ...
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0answers
9 views

Force authentication to use sssd not nslcd

my os is: CentOS 7 What I did was: vim /etc/sysconfig/authconfig USESSSDAUTH=yes USESSSD=yes FORCELEGACY=no Then: authconfig --enablesssd --enablesssdauth --...