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.

learn more… | top users | synonyms

0
votes
0answers
16 views

Centos6.5 can't use serial console but can see serial output messages during boot up

I configure CentOS 6.5 x86_64 version to support serial console. I edit configuration files as many people suggest. In GRUB, Add these two lines: serial --unit=0 --speed=115200 terminal --timeout=5 ...
0
votes
1answer
8 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: # ...
1
vote
2answers
2k views

iptables rules for nfs

I was getting below error while typing showmount -e 192.168.56.2 in client machine [root@client ~]# showmount -e 192.168.56.2 clnt_create: RPC: Port mapper failure - Unable to receive: errno 113 (No ...
0
votes
1answer
235 views

yum install gcc fails with invalid linux.dropbox.com/fedora directory

I am relatively new to Linux administration. I have installed Centos 6.5 (under VirtualBox on a Win7pro system). When I try to install gcc to the system using yum, I get the following results: ...
0
votes
1answer
41 views

red 5 recorder app set up

Does anyone know how to set up this Red5 Recorder application on Red5 1 RC2 for Linux CentOS 6.4? I followed set up of WEB-INF folder from this document http://fms.denniehoopingarner.com/newapp.html ...
2
votes
2answers
161 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 ...
0
votes
0answers
8 views

Find issues in PHP site hosted under Nginx and PHP-FPM, no log error

I'm setting up a Wordpress site under Nginx 1.6.2 + PHP-FPM (PHP 5.5.18). This is the configuration for WP site: server { root /var/www/html/jurisprudencia.dev; index index.php ...
0
votes
2answers
3k views

How to mount nfs using automounter(autofs)

I have an nfs at 192.168.1.10:/home/vm1/Desktop/nfs and will like to mount locally to /home/vm1/Desktop/nfs-mount using automounter...need help doing do What i did $cat /etc/auto.master /home ...
0
votes
0answers
16 views

How to enable php extention in centOS 6.5 with php 5.5

I have installed ffmpeg extension using this tutorial in Cent OS 6.5 with PHP 5.5. When I check with # ffmpeg command in terminal. it shows me following output ffmpeg version 2.2.1 Copyright (c) ...
0
votes
0answers
34 views

Not able to install rvm on centos 6.6

I am trying to install rvm on centos 6.6 using below commands. curl -L get.rvm.io | bash -s stable It throws an error as below bash: line 1: syntax error near unexpected token `<' 'ash: line 1: ...
0
votes
1answer
649 views

Installing Oracle 12c on CentOs 6.4

I need to install Oracle DB 12c on Centos 6.5/6.4 that has no GUI (or xserver) installed, Is there a way to do it? Can you point me to a manual? Thanks
1
vote
2answers
4k views

CentOS: View all users in a specific group

I added a user user01 to a group group01 using: usermod -a -G group01 user01 When I run in command id user01 it shows that this user has actually been added to the group. However, the file ...
0
votes
0answers
12 views

Centos Flashing cursor on boot

I have installed centos 6 on my machine. I did changed file permissions in root recursively using below command. $ chmod -R 2750 / Now when I did logout, progress bar appeared and it didn't stop. ...
0
votes
0answers
56 views

Centos install using KVM stuck on trying to access install.img

Greeting Folks, I am trying to install Guest or DOMU on a remote server and every time I try is get stuck at Retrieving /install.img. I believe its a network setting but am not entrely sure. Here is ...
0
votes
2answers
44 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 ...
0
votes
2answers
65 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 ...
0
votes
1answer
69 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 ...
0
votes
1answer
47 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: ...
1
vote
0answers
15 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 ...
0
votes
2answers
80 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 ...
0
votes
0answers
36 views

MySQL stops unexpectedly on CentOS 6.5 with WHM/Cpanel after migrating server with transfer tool

I recently moved my entire websites from a dedicated CentOS5 server to a CentOS 6.5 on Amazon EC2 with the same cPanel/WHM version. WHM 11.44.1 (build 19) However after angry calls from clients I ...
0
votes
0answers
70 views

Correct crontab settings on Cpanel/WHM Cron on CentOS 6.5

I have recently migrated from collocation to Amazon EC2 and setup new WHM installs with CentOS 6.5 I then used the Transfer tool to move all websites to the new server, however I am trying to transfer ...
0
votes
1answer
24 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 ...
0
votes
0answers
74 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 ...
2
votes
1answer
31 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. ...
0
votes
1answer
129 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 ...
0
votes
1answer
69 views

Change order of two-factor-authentication

I am testing two-factor-authentication for ssh logins on some CentOS containers in our testing environment. I compiled my own rpms from github's source, installed and configured everything and have ...
0
votes
0answers
43 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 ...
1
vote
1answer
3k views

Mirror repository won't work (The requested URL returned error: 403 Forbidden)

I'm trying to find out why I still get the 403 when running the yum install command. I have created a repository mirror which can be read from remote machines. Do you have any suggestions? I have ...
1
vote
3answers
479 views

semanage command not changing file context

I am trying to change selinux context for upload directory to enable anonymous upload. This is the Directory path /var/ftp/upload This is the default context [root@server ftp]# ls -Z upload ...
0
votes
3answers
129 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 ...
0
votes
3answers
632 views

How to install VLC media player in CentOS6?

I am using the CentOS, version 6, GNU/Linux distribution. I am in need to install VLC media player, what command i need to use at the terminal? I have tried yum install vlc.
0
votes
1answer
1k views

How to run something in background in Centos

I use CentOS and I have a little bit of difficulty with background tasks When something like updatedb command is running, I press CTRL+Z, instead of running in the background it immediately says ...
0
votes
1answer
131 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 ...
0
votes
0answers
16 views

Email Server Synchronization

I have created a mail server with the domain name abc.example.com. All the mail is working locally without any issue. Now I need to synchronize the local email server with hosted mail server (I ...
0
votes
1answer
33 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 ...
0
votes
2answers
217 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 ...
0
votes
0answers
37 views

VNC server immedietly closes connection

So, I am attempting to use VNC over SSH via this method. However when I type the command vncviewer localhost:[port] I get the response vncviewer: VNC server closed connection. However, I do have ...
1
vote
2answers
2k views

Setting up FQDN in CentOS 6.3

I have a domain name: example.com. I am setting up my CentOS 6.3 server's FQDN, it used to be centos63min. Reading on the internet, I found a lot of examples, where people name the server something ...
0
votes
1answer
77 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 ...
0
votes
1answer
335 views

Samba 3.6.9 on CentOS 6.5 existing user unable to connect to new share

I've got a question about samba connectivity. I installed a minimal installation of CentOS 6.5 and have it as a member server of AD, as per this guide: ...
1
vote
1answer
46 views

bind 9 and multiple domain names

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 ...
0
votes
0answers
25 views

Webshpere 8.5 with deployment folder on Virtual Box shared folder cause an “Operation permitted” error

I have a Websphere 8.5 on Centos 6.5 and I changed deployment directory by changing ${APP_INSTALL_DIRECTORY}. New path is pointing to place in Virtual Box shared folder (so it's pointing to vboxsf ...
0
votes
0answers
43 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 ...
16
votes
3answers
366 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 ...
0
votes
1answer
18 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: ...
0
votes
0answers
77 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 ...
0
votes
1answer
376 views

legacy grub: updated menu.lst is not used

This is a CentOS 6.4 with all updates inside Virtualbox OSE (quite old version). All information below refers to the VM, I don't think there is any issue on the host. /boot is a separate ext2 fs on ...
1
vote
1answer
512 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 ...
0
votes
1answer
57 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 ...