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

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Centos 6.6 not booting on Virtualbox on Windows host

I downloaded the QuickStart VM from Cloudera that has preinstalled Spark/Hadoop etc. I have been working on that for the last 4-5 weeks and it was running absolutely fine, but recently I had to ...
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2answers
121 views

CentOS 6.5 hostname on VPS

I'm trying to change the hostname on my fresh CentOS 6.5 image (VPS) via SSH. The sources I've found all say the hostname can be permanently changed in /etc/sysconfig/network and /etc/hosts, and that ...
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2answers
8k views

/dev/root does not exist in CentOS 7

I take an error message when installing CentOS 7 from usb. What is it solution?
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7answers
29k views

CentOS 7 Installation Failed

After hearing the news that CentOS 7 had been published, I decided to install it on my computer. I downloaded the ISO image from the CentOS official website (the one named ...
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2answers
36 views

Get Real BiosTime using CentOS 6.x and make permanentely SystemTime = BiosTime [closed]

My first SO is Windows 7, and it is synchronized with Bios Time... Later I installed CentOS, but... I want to have synchronized my CentOS with Windows and Time Bios! I was checking time (before ...
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2answers
1k views

yum install mod_auth_token not working on CentOS

On CentOS 6.5 how do I make yum install mod_auth_token work these days? According to my own HOWTO I wrote 12 months back, you used to be able to just type it now you have to DIY it, which is bad ...
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125 views

AH00534: httpd: Configuration error: No MPM loaded

I have a CentOS Linux release 7.1.1503 (Core) system and I have installed httpd and the corresponding configuration file is : # # This is the main rConfig Apache server configuration file. It ...
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1answer
37 views

Emacs dependency on librsvg2 error on Centos 6.6

I'm trying to install emacs and graphviz on my CentosBox. Its failing to resolve librsvg2: $ sudo yum install emacs graphviz Loaded plugins: fastestmirror Setting up Install Process Loading mirror ...
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1answer
23 views

How to unlink a symbolic link CentOS?

I am still fairly new to CentOS 6.5 and linux in general. In my haste to remedy a solution, I created a link from a suggestion online without thinking much about it. However I need to remove the link, ...
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1answer
2k views

How to create a git repo using Nginx?

I've a CentOS 5 server at domain.fr. I am trying to set a subdomain so that I can use it with git : git.domain.fr My repositories are in /home/git (example /home/git/repos.git) I've installed ...
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1answer
173 views

SELinux is preventing /opt/google/chrome/nacl_helper from getattr access on the file /etc/passwd

Is this a bug or a real security concern? It appears to have been discussed but I still don't understand why this is happening and what is being done to address the root cause (I am not going to ...
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1answer
69 views

Hard link permissions behavior different between CentOS 6 and CentOS 7

I'm getting a permissions error in CentOS 7 when I try to create a hard link. With the same permissions set in CentOS 6 I do not get the error. The issue centers on group permissions. I'm not sure ...
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59 views

DRBD Failure: (127) Device minor not allocated

I use wmware workstation to run two virtual machines with OpenVZ 2.6.32-042stab108.2 installed on top on CentOS 6.6. I have created another primary partition, /dev/sda4, to configure it as drbd ...
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24 views

installing java on cent os 6.6 64 bit system

am trying to follow this link: How to Install JAVA 7 (JDK 7u79) on CentOS/RHEL 7/6/5 and Fedora So I downloaded the jdk tar and untarred it.However when I run java -version from within bin I get the ...
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1answer
2k views

How to install Owncloud on CentOS 6.5

I wanted to install Owncloud on my VPS running CentOS 6.5. I followed the instructions on the official owncloud website but when I run the command yum install owncloud it says Error: Package: ...
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1answer
52 views

How to Disable Transparent Huge Pages in CentOS6.6 [duplicate]

I am trying to disable Transparent Huge Pages in my CentOS for HDP2.2 installation. I am using this link for the reference but I am still getting the issue. I tried to add this also: Adding the ...
2
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1answer
9 views

How is locally-stored data handled when mounting/re-mounting a directory in CentOS?

I have a CentOS 5.x server and I initially had it configured with a mount point. The netfs service is enabled on boot. /etc/fstab has an entry pointing to a cifs share: //foobox.example.com/share ...
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24 views

Black screen trying to install CentOS 6

I've got a windows 8.1 Acer Laptop and I'm trying to put CentOS 6 on it as a dual boot set up. The laptop doesn't have a CD drive. I've already partitioned my hard drive. I've used Unetbootin to put ...
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1answer
29 views

High on %wa from top command, is there any way to constrain it?

Here's my last top info before it stucks: top - 18:26:10 up 238 days, 5:43, 3 users, load average: 1782.01, 1824.47, 1680.36 Tasks: 1938 total, 1 running, 1937 sleeping, 0 stopped, 0 zombie ...
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2answers
1k views

vgdisplay shows 0 free PE/size

I'm trying to configure a CentOS HA system with 2 nodes, with DRBD for replicated storage. I'm following the "Clusters from Scratch" guide, and at the DRBD portion, I need to create a partition for ...
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1answer
25 views

GUI List boxes invisible

I'm having an issue with my Eclipse GUI. I'm not sure if it Linux specific or Eclipse specific. When I try to view list boxes or text areas, they don't show up. All I see is a grey box (or what I ...
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3answers
3k views

CentOS ELRepo Kernel installing VMware

Already installed VMware Workstation 9 on my Linux CentOS 6.5 Final with 3.10.40-1.el6.elrepo.x86_64 running kernel. When I open VMware Workstation, it asks me to locate the Kernel Headers ...
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2answers
3k 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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1answer
6k views

How to update glibc to 2.14 in CentOS 6.5

I want to install Android NDK on my CentOS 6.5 machine. But when I ran the program, it says it needs glibc 2.14 to be able to run. My CentOS 6.5 only has Glibc 2.12 installed. So I tried to update ...
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71 views

ffprobe or avprobe not found. Please install one

I want to add tags to mp3 converted with youtube-dl & ffmpeg in CentOS 6: command line : youtube-dl -o '/Output/qpgTC9MDx1o.mp3' qpgTC9MDx1o -f bestaudio --extract-audio --metadata-from-title ...
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2answers
31 views

How can I set up a secure LAMP stack on CentOS?

I have been using linux for years, but I need some clarification on what are probably pretty basic principles to how the OS works, but I definitely need clarification due to security concerns. I am ...
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1answer
34 views

Where did my free space go after reducing a partition?

I have a machine running Centos 6.x, with only one hard drive, 2 TB in size. I found that it had almost all of that space partitioned to the /home directory, so I decided I wanted to reduce that ...
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0answers
25 views

cannot upgrade kernel (grubby fatal error: unable to find a suitable template)

I have an appliance (read: a PC in a rackmount chassis which sits in the rack and does its job for years without anyone really paying it much attention until it dies) running CentOS 5.4. Trying to ...
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0answers
21 views

Converting a raw print data stream containing PCL commands to PDF

I have a program that sends raw print data through samba to typically PCL compatible printers. The program is written so basic PCL commands control how it prints. When sending it to the printer it ...
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0answers
39 views

Expanding root partition CentOS 6 With using fdisk

I am trying to expand the root partition on a VM which is not using LVM and I do not have (nor want to try and create then use) a disk to boot from. As such I followed what I felt was the logical ...
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1answer
657 views

can't connect to samba drive in centos 6.3

#smbclient //ballzdeep/torrents Server not using user level security and no password supplied tree connect failed: NT_STATUS_BAD_NETWORK_NAME Does this mean i need to require username and password ...
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19 views

Setting X display giver no protocol error [duplicate]

Here is the command i use DISPLAY=:0.0 sh /var/log/show_report.sh & disown This shell script just invokes the browser and here is error i receive No protocol specified Error: cannot open ...
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1answer
25 views

RPM installation %post macro works on terminal but not on GUI

I have created my own .rpm file. The installation works prefect on the command line but doesn't work properly when i am doing it from the GUI. The only thing that doesn't work from the GUI is the ...
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1answer
39 views

seeking hints for correct escaping of sed commands WITHIN yaml

I am having a hard time finding the issue why following lines of "code" break my cloud-init config. Basically I am calling a son object as part of the DigitalOcean API which has a YAML format - I got ...
2
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1answer
31 views

What exactly is a file offset in lsof output?

I was using lsof to track down deleted files that were still taking up space and I realized that I wasn't quite sure what an offset is with respect to a file. lsof's man page was less than helpful in ...
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1answer
1k views

Empty desktop after installing xrdp on Centos 6.5 with XFCE as window manager

I followed the directions to install xRDP from this site (http://ajmatson.net/wordpress/2014/01/install-xrdp-remote-desktop-to-centos-6-5/) When I RDP from Windows -> Linux, I successfully enter ...
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2answers
1k views

How to permanantly disable /var/log/lastlog?

When I delete files such as /var/log/lastlog, /var/log/utmp and /var/log/wtmp the files will be recreated. How do I disable the recreation of those files?
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1answer
507 views

CentOS 5 - hdparm - how to set DMA mode

I'm running CentOS 5 with a PATA hard drive. I've used hdparm to tune the hard disk for better performance, but there are 2 settings that don't work: hdparm -M 254 /dev/hda gives the error ...
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3answers
885 views

installing eric5 in CentOS 6.4

I am trying to install Eric Python IDE 5 in my CentOS 6.4. The problem here is even I have installed PyQT4 its again saying that module is missing. what I am supposed to do ? here is the terminal log ...
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1answer
12 views

RPM to invoke browser post installation

I am creating an RPM installer for centos 6.5, After installation i want the RPM to invoke the browser and show the installation report. This installation report shows the details of how the ...
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2answers
141 views

How to Resolve a .so Dependency

I have a package (.rpm) on CentOS 6.5 that requires a .so file, which I also have on my machine. When I attempt to install the package I get an error stating unresolved dependencies regarding the .so ...
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1answer
17 views

Docker CentOS7 image and locale compilation problems

I'm setting up a Docker image which requires localization support. I also need to patch the pt_BR locale according to comment #21 on this thread. So what I'm basically doing is reinstall glibc to ...
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1answer
80 views

CentOS: How is it possible to reset all your network configuration?

I'm not really sure the best question to ask in my situation, so let's go with "How is it possible to delete all your network commands?". Here's the situation: I have a CentOS 7 minimalist CLI ...
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1answer
3k views

mcrypt, EPEL and CentOS 6.4

I am having issues installing php-mcrypt. I am not an administrator of any level. I have performed the following. Installed EPEL Installed REMI Configured EPEL Updated YUM Cleaned YUM Installed ...
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2answers
38 views

In CentOs 6.6 how do I get an interface up?

I can see the interface with ifconfig but not with ip a. ifconfig shows no packets for eth0:1 The interface is down. how do I bring up eth0:1? [root@monitor01 network-scripts]# ifconfig eth0 ...
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4answers
748 views

Using real time kernel headers to compile userspace code vs default headers

Per customer requirements, I installed CentOS 5.6 with the default kernel. With this kernel installed, the time.h file includes the #define CLOCK_MONOTONIC. Now, a real-time kernel was installed ...
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1answer
111 views

Centos 6.6, resize partition

We have a Centos server as a virtual machine where the / path is getting full. So we want to resize the partition from 50GB to 70GB. I followed this guide ...
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4answers
36k views

How To Install Virtualbox Guest Additions On CentOS via Command Line only

Reading the Virtualbox user manual, I finally got [here], which explains how to install Virtualbox Guest Additions on a Linux guest via Command Line. But it's not clear enough for me (I just started ...
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1answer
25 views

How to install CentOS 6.6 linux on an OCZ RevoDrive3 X2 PCI SSD

This took me a week, so here's the problem, and solution. From CentOS 6.5 onwards, the driver mvsas.ko recognizes the OCZ SSD... wrongly. It shows up as 4 small slow SSDs, instead of one big fast ...
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11 views

Create Snapshot an store it on a other server

Is it possible to take a complete Snapshot of my (VPS - CENTOS) server? with a script? And that it will stored on a other server? With snapshot i mean everything ( configurations, websites etc ) And ...