CentOS is an abbreviation for Community Enterprise Operating System that aims to be compatible with its upstream source, Red Hat Enterprise Linux. CentOS 6 is the 6th major version of CentOS, which was released on July 10th, 2011.

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Why am i getting execute binary file error?

i am getting following email every 10 min. as I own the VPS. I am not expert in linux and am learning to manage linux servers. Please help me why am i getting these emails and how to stop them or how ...
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159 views

Qmailrocks installation error on CentOS 6.6

I've managed to install qmail-1.03 using the qmailrocks procedure on CentOS 6.6. When I telnet to port 25, I get an error in the qmail log below: [root@www qmail]# telnet domain.com 25 Trying ...
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3k views

CentOS installation error - No more mirrors to try

I have currently gotten my parts for my new home-build server, but I've come into an error installing CentOS 6.6 (minimal 64bit). I am installing 6.6 instead of 7, due to OpenVZ not supporting CentOS ...
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66 views

Im trying to adjust my httpd.conf file on my server but cant find it

I'm trying to make changes tot he httpd.conf file on my server so i can have multiple websites on my magento platform however i am unable to find said httpd.conf file. I'm using centos 6 and Apache ...
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1answer
52 views

Cannot access DNS from external network

I have setup a MaraDNS instance on CentOS 6.5. I can access the DNS records from local machine—on which MaraDNS is installed—by doing nslookup but cannot access the DNS server records from Internet on ...
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113 views

phpList is not showing Initialize Database Option

I just installed phpList on server. Also created mysql database. Now, I am opening it through ip-address/phplist/admin, It is showing just header. I can't see any option to Initialize Database. Soo, I ...
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71 views

Starting VNC server: no displays configured in CentOS6.0-64 Minimal

I have installed tigervnc-server on CentOS6.0-64 Minimal. I am using Putty for it. I have also added user. Now, after setting server configuration asVNCSERVERS="1:jeeten" VNCSERVERARGS[1]="-geometry ...
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2answers
3k views

No package available when installing packages on CentOS 6.6

I wanted to install mysql-server on CentOS 6.6 (64bit). When I run yum install mysql-server, I get the following error: root@ip-50-62[/home/syn]# yum install mysql-server Loaded plugins: ...
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3answers
191 views

Where does this name come from? root@<hostname>

When I putty into my CentOS 6 server I am shown root@ DemandStream Development This was a copied and repurposed Linux VM from one of our development environments. How do I change this name? It seems ...
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139 views

Unable to connect to internet from Centos VM

I am using VirtualBox 4.3, I have installed Centos 6.3. I have two adapters attached. 1) NAT 2) Host-Only I want to be able to setup a cluster of 3 machines which can talk to each other and also be ...
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400 views

Pure-FTPD certificate not being used

I am using Pure-FTPD from the epel repository on CentOS 6. Now I have configured to enable TLS which works fine however for some reason it wont make use of the certificate file I have placed in ...
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129 views

Memory usage grouped by parent process

How can I find the total memory usage of all processes (including child processes) with PPID of 1. For a program like nginx/httpd which forks several child processes, ps/top gives the memory usage of ...
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1answer
54 views

Service Network Restart

I was configuring the network interface for the servers that are on Centos 6 platform. While editing the ifcfi-eth0 file there is a field "ONBOOT" which is set to "yes" if we want that the network ...
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1answer
149 views

What is the effect of Service Network Restart

In network configuration file ifcfg-eth0 . There is a field "onboot" if I put onboot=no and restart the service network. Then interface eth0 did not up. If I put onboot=yes it does up the interface ...
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1answer
1k views

Making 2.7.3 default version of python on CentOS 6

I want to execute python from php and I do have a script that works fine for default python interpreter. I have centos with default python 2.6.6 which is installed at /usr/bin/python and python 2.7.3 ...
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1answer
446 views

“kdb5_util create” fails with an error

krb5-server 1.10.3-33.el6 on CentOS 6.5. I'm following the Red Hat KDC Instructions. Right there at the start, the instructions give me /usr/sbin/kdb5_util create -s. If I run that, I get this: # ...
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2answers
376 views

Permission denied error when accessing email folder even when logged in as root

I have a box with iredmail installed in CentoOS 6.4. When trying to access the vmail1 folder, which is the storage path for emails, It get the following: [root@mx vmail]# dir -ls total 12 4 ...
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239 views

Clone Entire OS over SSH

I have a CENTOS server that was recently compromised. However, I used to be friendly with a professor who taught computer security, and I would like to give this person a chance to go over the old ...
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136 views

Cloned Linux does not recognize the new flash drive's space?

I installed CentOS 6 into my 4GB flash drive, and everything worked fine until I needed more space. I have another flash drive with 8GB of space (which is all I really need) and so I formatted it with ...
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2answers
191 views

Where can I get Centos 6.5?

I am deploying a product for my department which calls for CentOS 6.5. When I browse the CentOS downloads, I am only seeing 6.6 available with no means of finding 6.5. Our vendors have only stated ...
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33 views

CentOS 6 with User Permission (Read at message)

I have create users on CentOS 6 between test1 and test2 so I login on user test1 on ssh and i tried to access home dir of test2 so why it can access? how i can setting for other users can't access ...
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1answer
346 views

Why won't mysqld start after a yum update?

This morning I ran yum update and it completed successfully. We noticed, however, that the database server wasn't running. As root, I ran: service mysqld restart Which gave me the following error: ...
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1k views

CentOS: install software using text UI

I've downloaded CentOS-6.6-i386-minimal.iso (because the DVD images are too large for my narrow internet access. How can I install software (e.g. Gnome desktop) now from the console? Is there ...
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1answer
191 views

I can't see apache, nginx process while using “top” command

As the title said: "I can't see apache or nginx process while I'm using top command" I'm using CentOS 6.5 and of course I already installed it on my server. I run them as a service by using these ...
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577 views

How can CentOS 6 use python 2.6 with anaconda (python 2.7) installed?

I am using CentOS 6 and it uses python 2.6 by default. Recently, I install anaconda package with python 2.7 to work with scikit-learn, but now some packages that my OS uses are not available to it. I ...
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1answer
87 views

Why the used disk space increases after yum update?

If I do a yum update on a fresh CentOS 6.5 image, its disk usage increases by 200 MB. The image is a custom AWS image built some 6 months ago. The base image is almost barebones and takes around 1GB. ...
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337 views

Strange tgtd behavior: Multiple instances?

I'm trying to add a LUN to a running iSCSI target under CentOS 6.5. The iSCSI target is tgtd from the scsi-target-utils package. I'm seeing some pretty weird behavior and I’m a bit of a loss as to how ...
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733 views

Unable to read package metadata on Centos 6 PXE install

A Centos6 pxe install is not running correctly due to error: Unable to read package metadata. Cannot retrieve repository metadata (repomd.xml) for repository: Centos6-os. However from examining the ...
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1answer
71 views

Replace local host file modification with remote. Proxy server or something else?

I need to find a solution for a problem described below (both servers running CentOS 6) My goal is to have visible website to the public where a client will type own domain name mydomain.com and then ...
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2answers
2k views

getting red alarm on dahdi show status command

I am trying to configure dahdi on my centos system by following this my system.conf # Autogenerated by /usr/sbin/dahdi_genconf on Sun Sep 21 16:06:45 2014 # If you edit this file and execute ...
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2k views

How can I repair a totally corrupt rpm db on centos 6.4 with no backup?

I am looking for help in repairing my Centos 6.4 rpm db. I had a disk failure and the backup rpm i have is not working also. I have googled the request and have come up with many different solutions ...
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292 views

Samba same shared folder read only for guest and read write for @somegroup how to

I want users in group Audio to have read/write and all of the other users (guest, anonymous, everyone....) to be able to browse and read only access to the same share folder. Guest users cannot mount ...
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1answer
326 views

bind 9 and multiple domain names [closed]

I have been told the following from someone after trying to get more than one domain name (zone) to work on the same BIND instance. We are able to get a single domain name "example.com" working but ...
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105 views

rm -rf * results in “Killed”

I used PHP to generate about 4,000,000 files in a directory (f/) because I was bored. When I cd .. and use rm -rf f, it simply returns "Killed" about half a second later and does not delete the ...
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1answer
37 views

Bind domain name to hosting CentOS

I own "YouPlus.biz" and I own hosting at 192.169.218.8 (goddady VSP) I have been trying to Bind youplus.biz to 192.169.218.8 but have had no luck. have tried: ...
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230 views

How to spilt a bootable linux distro iso file onto multiple dvds or cds?

I have customized a centOS distro , by including some packages such as VLC,eclipse etc. but now the size of distro exceeds 7.42 gb. I want to : split the large distro iso into multiple small iso ...
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1answer
229 views

How to use an email relay server from cmd line

I have some cronjobs that run on our servers that monitor processes, run automated jobs, etc. These scripts mail alerts for our monitoring or mails out the automated job results, etc. using the mail ...
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224 views

Zenoss crashing

We have had a Zenoss installation for a couple of years. Everything was fine until about a several weeks ago when the system being out of memory. There was no significant event that could've led to ...
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1answer
171 views

Bash hints does not work after sudo or man

I use Centos 6.5. Tab key on keyboard helps to insert command in terminal. E.g. if I write vi and press tab then all possible opportunities are printed: $ vi vi vim ...
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3answers
694 views

How to deduplicate 40TB of data?

I've inherited a research cluster with ~40TB of data across three filesystems. The data stretches back almost 15 years, and there are most likely a good amount of duplicates as researchers copy each ...
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1answer
2k views

How to upgrade xorg-x11-server

I want to use Xdmx, but it has got bug. I found this bug on Bugzilla and there is information that bug is fixed in xorg-x11-server-1.14.3-2.fc19 package. I use Centos 6.5 and I cannot upgrade to 7 (I ...
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461 views

How to start icewm?

I installed icewm 1.2.13. Metacity is my default window manager. Usually, to replace window manager --replace option is used, e.g metacity --replace. But my version of icewm does not have this option. ...
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1answer
571 views

Centos 6.5( Desktop edition ) - Skype 4.0 login issue

I have installed Skype 4.0 on Centos 6.5. When I am trying to log into Skype, it tells me that the server failed to connect. Note: I also removed the ~/.Skype directory under the home directory. I'm ...
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303 views

Printing from Centos (CUPS) to a windows print server over HTTPS takes forever

I have a Centos server setup up to print to a Windows server 2012 (though version may not matter) across the internet. When I use HTTP to make the IPP call the process is nearly instant and works ...
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488 views

Linux ALSA: No sound out from internal speaker

There is no audio output when running "Test Speakers" in Sound Preferences -> Hardware -> pcsp. The internal speaker worked fine under Windows. Sound can, however, be heard when headphones or a ...
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2answers
6k views

Warning: remote port forwarding failed for listen port on Centos 6

I have a problem with port forwarding in centos 6, when i do: ssh -v -R root@hostname:19999:localhost:22 root@hotname I get this warning: Warning: remote port forwarding failed for listen port ...
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2answers
327 views

CentOS 6.5 PHP extensions

I need to enable php extensions like PDO and GD but I can't find a section with all the PHP extensions enabled inside /etc/php.ini, so in which file is this defined? EDIT: using PHP Version 5.5.14 or ...
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1answer
2k views

libssl.so.6: cannot open shared object file

I tried installing my application in a CentOS 6 server. But while I am starting Apache(Server version: Apache/2.2.26 (Unix)), I am getting error like [error] install_driver(mysql) failed: Can't ...
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3answers
241 views

Tuleap: Configuration of Bug Tracker report

I created a Bug Tracker and open different bugs. When I enter in my Bug Tracker, I see a web page with a search form in the upper part and a list with the different bugs in the lower part. However by ...
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1answer
28 views

Tuleap: display of project description

I entered a list in the description of my project with carriage return after each item of the list. However in the project page, when Tuleap displays the descritpion of the project, it suppressed the ...