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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Cannot SSH to localhost without password

First off, I want to say that I've tried everything in this question here, and it didn't help me: How to SSH to localhost without password? I had a file permissions issue recently because I don't ...
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18 views

C programing on open wrt [on hold]

I found myself in the position of wanting to compile a very simple program that I could run on my OpenWrt router. I ended up spending hours wading through the frustratingly incomplete documentation on ...
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27 views

IP address appears instead of hostname on LAN to network router

In the CentOS 6 servers the hostname command displays the name, but in the "PC NAME" field in the Actiontech router it displays the IP address. How can I make sure the CentOS servers are communicating ...
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10 views

dns forwarding for specific zone not working - bind

In bind we created specific zone and got set a forward options, but it fails to resolve. Details as follow, For mydomain.com dns working fine. but we use developer site called mydomain.com.dev we ...
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52 views

How to install GLIBC_2.15 and GLIBCXX_3.4.20 on centos 6.6 ?How to setup YCM?

Recently I'm trying to setup YCM on system of centos 6.6,however the system doesn't provide gcc of version high enough to support the work of clang.It is quite a trouble for me to update the gcc,more ...
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82 views

Upgrading glibc in centos 6.6

My server is using glibc-2.12.x. when I install certain packages it gives an error.Dependency not found glibc-2.14 or above is required.When I try using yum install glibc* it says server is already ...
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1answer
23 views

How to chown file to containing folders owner

How would you go to chown a file to the containing folder's owner lets say I moved a file from /home/userA/folder/abc.bin towards: /home/userB/finalfolder/abc.bin How can I chown abc.bin ...
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86 views

How to install wxpython on centos 6.5 (with python 2.7)?

I've updated python on my centos to 2.7 and installed wxpython via: yum install python-wx Unfortunately python can't find the library and I get an error: ImportError: No module named wx Did I ...
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1answer
99 views

mongod start failed (monogdb 3.0.2, database storageEngine-wiredTiger)

I was using mongodb for a month yesterday morning after unusual shutdown my mongodb is failing to start. Here I am using wiredTiger Storage Engine, I think the wiredTiger.wt file got corrupted but I ...
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42 views

Can not ping the Router in GNS3 via vmnet1

I have installed GNS3 on CentOS6.2. And on GNS3, f0/0 of c3725 connects to CentOS6.2 via vmnet1. I mannually assign 2001:cafe::1/64 to f0/0 of c3725 while I assign 2001:cafe::2/64 to vmnet1. Here ...
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12 views

How to troubleshoot marketing e-mail inbox rate / deliverability?

After previously using managed ESP's, we've recently switched over to our own server (CentOS 6) that's set up to send bulk e-mails with 12 IPs/SPF/DKIM. Campaigns are processed and sent via ...
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101 views

Setup default PHP version in Plesk 12

I've just setup a Plesk 12 CentOS6 vServer. I installed some PHP-versions like 5.4, 5.5 and 5.6. The customers can change the running PHP version in the interface. All is working fine, but I have one ...
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1answer
255 views

Docker : cannot access internet from container

I am running CentOS 6.6 behind a corporate proxy. I've installed docker, and I had to make some modifications in order for the daemon to access the Docker Hub through the proxy. This part is working ...
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1answer
105 views

dmsetup status fields explained?

I am not new to linux, but I am new to the underlying guts of it, and I don't know anything about LVM or device-mapper. I'm trying to troubleshoot a livecd mounting its live-rw (dm-0) file system as ...
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255 views

docker-machine behind corporate proxy

I've installed Machine (Docker tool), and I'm trying to learn how to use it by following the user guide. I'm running centOS 6.6 As I am working behind a company proxy, I exported some environnement ...
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41 views

Installed PHP extensions to wrong PHP version

I just bought a VPS and it came with PHP5.3.3 and that wasn't good for our website, so I successfully (so it seemed, anyway) installed PHP5.6.7 and successfully registered it with Plesk. For the ...
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321 views

Is there any way to reset the `httpd.conf` in CentOS to the original/default version?

I was learning server installation by creating a web server in VMware, I don’t know what changes I made to httpd.conf. Is there any way to reset all the configuration for httpd.conf to default? ...
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47 views

Is there a way to mock earlier versions of Firefox?

I'd like to develop a website that is compatible with firefox 10, but I'd rather use a more up to date browser (firefox 30+). Is there a way to view web pages as though you're using an older browser ...
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23 views

Script does not start when OS start|reboot

I have a file at /etc/init/pdoneVendorBroker.conf with the following content: description "PDone Vendor Broker" start on runlevel [234] stop on runlevel [0156] respawn exec php ...
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1answer
122 views

yum group list doesn't contain “C Development Tools and Libraries”

Here's a Linux noob question: I'd like to install the yum group "C Development Tools and Libraries", but it doesn't show up on the group list, and isn't already installed. Any suggestion on how I ...
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1answer
137 views

How to install office 365 in linux centos 6

i have lots of work in office 365 but recently our company install openoffice which is very difficult doing work, so we want office 365 in linux centos 6, kindly suggest me how to install office 365 ...
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31 views

Install 32 bit DB2 on 64 bit centos 6.2

I am trying to install 32 bit DB2 (9.0.3) on my 64 bit centos 6.2 but an error occured during installation that is shown below: There has been an attempt to install a DB2 install image for a ...
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1answer
197 views

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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1answer
82 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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663 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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1answer
34 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
30 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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60 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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38 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
684 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
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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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53 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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119 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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1answer
71 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
38 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
49 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
337 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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Centos 6.4 didn't display properly

I installed Centos on my computer. Everytime I work for a while, the characters began to disappear. I tried open a tab, Vim, Gedit,... There was just a blanck white windown pop up. I don't understand ...
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240 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 ...
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1answer
117 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
304 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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115 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 ...
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86 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) ...
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199 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: ...
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43 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. ...
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119 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 ...
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90 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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1answer
106 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
163 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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27 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 ...